/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/word-subst.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 05:11:18,821 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 05:11:18,822 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 05:11:18,866 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-18 05:11:18,903 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 05:11:18,903 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 05:11:18,904 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 05:11:18,904 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 [2022-01-18 05:11:18,928 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 05:11:18,929 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 05:11:18,929 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 05:11:18,929 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 05:11:18,930 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 05:11:18,930 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 05:11:18,930 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 05:11:18,930 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 05:11:18,930 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 05:11:18,930 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 05:11:18,931 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 05:11:18,931 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 05:11:18,931 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 05:11:18,931 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 05:11:18,931 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 05:11:18,931 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 05:11:18,932 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 05:11:18,932 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 05:11:18,932 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 05:11:18,932 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 05:11:18,932 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 05:11:18,932 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 05:11:18,932 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 05:11:18,932 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 05:11:18,933 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 05:11:18,933 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 05:11:18,933 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 05:11:18,933 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 05:11:18,934 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 05:11:18,934 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 05:11:18,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 05:11:18,934 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 05:11:18,934 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 05:11:18,934 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 05:11:19,128 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 05:11:19,147 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 05:11:19,148 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 05:11:19,149 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-01-18 05:11:19,150 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-01-18 05:11:19,150 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/word-subst.wvr.bpl [2022-01-18 05:11:19,151 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/word-subst.wvr.bpl' [2022-01-18 05:11:19,179 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 05:11:19,180 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-18 05:11:19,181 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 05:11:19,181 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 05:11:19,182 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 05:11:19,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "word-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 05:11:19" (1/1) ... [2022-01-18 05:11:19,200 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "word-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 05:11:19" (1/1) ... [2022-01-18 05:11:19,205 INFO L137 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-01-18 05:11:19,206 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 05:11:19,207 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 05:11:19,207 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 05:11:19,207 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 05:11:19,212 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "word-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 05:11:19" (1/1) ... [2022-01-18 05:11:19,212 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "word-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 05:11:19" (1/1) ... [2022-01-18 05:11:19,213 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "word-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 05:11:19" (1/1) ... [2022-01-18 05:11:19,213 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "word-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 05:11:19" (1/1) ... [2022-01-18 05:11:19,220 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "word-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 05:11:19" (1/1) ... [2022-01-18 05:11:19,221 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "word-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 05:11:19" (1/1) ... [2022-01-18 05:11:19,222 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "word-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 05:11:19" (1/1) ... [2022-01-18 05:11:19,223 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 05:11:19,224 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 05:11:19,224 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 05:11:19,224 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 05:11:19,225 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "word-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 05:11:19" (1/1) ... [2022-01-18 05:11:19,230 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 05:11:19,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:11:19,247 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) [2022-01-18 05:11:19,252 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 [2022-01-18 05:11:19,274 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-01-18 05:11:19,275 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-18 05:11:19,275 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-18 05:11:19,275 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-01-18 05:11:19,275 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-18 05:11:19,275 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-18 05:11:19,275 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-01-18 05:11:19,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 05:11:19,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 05:11:19,276 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2022-01-18 05:11:19,276 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-01-18 05:11:19,276 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-01-18 05:11:19,276 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-18 05:11:19,314 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 05:11:19,315 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 05:11:19,480 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 05:11:19,548 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 05:11:19,549 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-18 05:11:19,550 INFO L202 PluginConnector]: Adding new model word-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 05:11:19 BoogieIcfgContainer [2022-01-18 05:11:19,550 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 05:11:19,555 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 05:11:19,555 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 05:11:19,570 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 05:11:19,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "word-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 05:11:19" (1/2) ... [2022-01-18 05:11:19,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f5f87ec and model type word-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 05:11:19, skipping insertion in model container [2022-01-18 05:11:19,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "word-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 05:11:19" (2/2) ... [2022-01-18 05:11:19,572 INFO L111 eAbstractionObserver]: Analyzing ICFG word-subst.wvr.bpl [2022-01-18 05:11:19,575 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 05:11:19,575 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 05:11:19,576 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 05:11:19,576 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 05:11:19,645 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-01-18 05:11:19,686 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 05:11:19,692 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, 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 [2022-01-18 05:11:19,692 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-18 05:11:19,699 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 28 transitions, 80 flow [2022-01-18 05:11:19,737 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) [2022-01-18 05:11:19,739 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) [2022-01-18 05:11:19,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-18 05:11:19,745 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:19,745 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:19,746 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:19,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:19,749 INFO L85 PathProgramCache]: Analyzing trace with hash -175708281, now seen corresponding path program 1 times [2022-01-18 05:11:19,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:19,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551038469] [2022-01-18 05:11:19,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:19,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:19,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:19,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:19,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:19,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551038469] [2022-01-18 05:11:19,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551038469] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:19,910 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:19,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 05:11:19,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262568143] [2022-01-18 05:11:19,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:19,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 05:11:19,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:19,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 05:11:19,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-18 05:11:19,945 INFO L87 Difference]: Start difference. First operand has 108 states, 107 states have (on average 3.4953271028037385) internal successors, (374), 107 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:20,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:20,070 INFO L93 Difference]: Finished difference Result 171 states and 561 transitions. [2022-01-18 05:11:20,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 05:11:20,072 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-01-18 05:11:20,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:20,081 INFO L225 Difference]: With dead ends: 171 [2022-01-18 05:11:20,081 INFO L226 Difference]: Without dead ends: 108 [2022-01-18 05:11:20,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-18 05:11:20,087 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 16 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:20,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 15 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:20,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-01-18 05:11:20,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2022-01-18 05:11:20,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 3.2990654205607477) internal successors, (353), 107 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:20,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 353 transitions. [2022-01-18 05:11:20,128 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 353 transitions. Word has length 14 [2022-01-18 05:11:20,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:20,128 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 353 transitions. [2022-01-18 05:11:20,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:20,129 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 353 transitions. [2022-01-18 05:11:20,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-18 05:11:20,130 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:20,130 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:20,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 05:11:20,130 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:20,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:20,131 INFO L85 PathProgramCache]: Analyzing trace with hash 352207545, now seen corresponding path program 1 times [2022-01-18 05:11:20,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:20,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330572924] [2022-01-18 05:11:20,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:20,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:20,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:20,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:20,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:20,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330572924] [2022-01-18 05:11:20,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330572924] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:20,205 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:20,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 05:11:20,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396151402] [2022-01-18 05:11:20,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:20,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 05:11:20,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:20,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 05:11:20,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 05:11:20,207 INFO L87 Difference]: Start difference. First operand 108 states and 353 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:20,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:20,342 INFO L93 Difference]: Finished difference Result 172 states and 504 transitions. [2022-01-18 05:11:20,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 05:11:20,348 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 [2022-01-18 05:11:20,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:20,352 INFO L225 Difference]: With dead ends: 172 [2022-01-18 05:11:20,353 INFO L226 Difference]: Without dead ends: 153 [2022-01-18 05:11:20,353 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 [2022-01-18 05:11:20,354 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 42 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:20,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 26 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:20,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-01-18 05:11:20,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 123. [2022-01-18 05:11:20,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 3.19672131147541) internal successors, (390), 122 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:20,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 390 transitions. [2022-01-18 05:11:20,363 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 390 transitions. Word has length 15 [2022-01-18 05:11:20,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:20,364 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 390 transitions. [2022-01-18 05:11:20,364 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) [2022-01-18 05:11:20,364 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 390 transitions. [2022-01-18 05:11:20,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-18 05:11:20,365 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:20,365 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:20,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 05:11:20,366 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:20,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:20,366 INFO L85 PathProgramCache]: Analyzing trace with hash 129707517, now seen corresponding path program 2 times [2022-01-18 05:11:20,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:20,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247825587] [2022-01-18 05:11:20,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:20,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:20,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:20,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:20,439 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:20,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247825587] [2022-01-18 05:11:20,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247825587] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:20,439 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:20,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 05:11:20,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206769053] [2022-01-18 05:11:20,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:20,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 05:11:20,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:20,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 05:11:20,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 05:11:20,441 INFO L87 Difference]: Start difference. First operand 123 states and 390 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:20,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:20,547 INFO L93 Difference]: Finished difference Result 179 states and 520 transitions. [2022-01-18 05:11:20,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 05:11:20,547 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 [2022-01-18 05:11:20,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:20,550 INFO L225 Difference]: With dead ends: 179 [2022-01-18 05:11:20,550 INFO L226 Difference]: Without dead ends: 160 [2022-01-18 05:11:20,550 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 [2022-01-18 05:11:20,555 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 41 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:20,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 26 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:20,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-01-18 05:11:20,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 131. [2022-01-18 05:11:20,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 3.1538461538461537) internal successors, (410), 130 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:20,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 410 transitions. [2022-01-18 05:11:20,573 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 410 transitions. Word has length 15 [2022-01-18 05:11:20,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:20,573 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 410 transitions. [2022-01-18 05:11:20,573 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) [2022-01-18 05:11:20,573 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 410 transitions. [2022-01-18 05:11:20,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-18 05:11:20,574 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:20,574 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:20,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 05:11:20,575 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:20,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:20,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1336190699, now seen corresponding path program 3 times [2022-01-18 05:11:20,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:20,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258112493] [2022-01-18 05:11:20,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:20,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:20,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:20,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:20,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:20,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258112493] [2022-01-18 05:11:20,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258112493] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:20,692 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:20,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 05:11:20,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243918489] [2022-01-18 05:11:20,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:20,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 05:11:20,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:20,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 05:11:20,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 05:11:20,694 INFO L87 Difference]: Start difference. First operand 131 states and 410 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:20,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:20,814 INFO L93 Difference]: Finished difference Result 235 states and 657 transitions. [2022-01-18 05:11:20,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 05:11:20,814 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 [2022-01-18 05:11:20,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:20,816 INFO L225 Difference]: With dead ends: 235 [2022-01-18 05:11:20,816 INFO L226 Difference]: Without dead ends: 216 [2022-01-18 05:11:20,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:11:20,822 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 38 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:20,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 30 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:20,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-01-18 05:11:20,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 135. [2022-01-18 05:11:20,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 3.1492537313432836) internal successors, (422), 134 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:20,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 422 transitions. [2022-01-18 05:11:20,837 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 422 transitions. Word has length 15 [2022-01-18 05:11:20,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:20,837 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 422 transitions. [2022-01-18 05:11:20,837 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) [2022-01-18 05:11:20,837 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 422 transitions. [2022-01-18 05:11:20,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-18 05:11:20,838 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:20,838 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:20,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-18 05:11:20,839 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:20,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:20,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1816909085, now seen corresponding path program 4 times [2022-01-18 05:11:20,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:20,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823590047] [2022-01-18 05:11:20,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:20,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:20,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:20,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:20,962 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:20,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823590047] [2022-01-18 05:11:20,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823590047] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:20,962 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:20,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 05:11:20,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401775690] [2022-01-18 05:11:20,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:20,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 05:11:20,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:20,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 05:11:20,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-18 05:11:20,964 INFO L87 Difference]: Start difference. First operand 135 states and 422 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:21,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:21,078 INFO L93 Difference]: Finished difference Result 194 states and 550 transitions. [2022-01-18 05:11:21,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 05:11:21,078 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 [2022-01-18 05:11:21,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:21,079 INFO L225 Difference]: With dead ends: 194 [2022-01-18 05:11:21,079 INFO L226 Difference]: Without dead ends: 171 [2022-01-18 05:11:21,080 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:11:21,083 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 27 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:21,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 27 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:21,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-01-18 05:11:21,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 135. [2022-01-18 05:11:21,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 3.1343283582089554) internal successors, (420), 134 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:21,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 420 transitions. [2022-01-18 05:11:21,092 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 420 transitions. Word has length 15 [2022-01-18 05:11:21,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:21,092 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 420 transitions. [2022-01-18 05:11:21,092 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) [2022-01-18 05:11:21,092 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 420 transitions. [2022-01-18 05:11:21,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-18 05:11:21,093 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:21,093 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:21,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-18 05:11:21,093 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:21,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:21,094 INFO L85 PathProgramCache]: Analyzing trace with hash -99509597, now seen corresponding path program 5 times [2022-01-18 05:11:21,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:21,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656572505] [2022-01-18 05:11:21,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:21,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:21,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:21,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:21,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:21,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656572505] [2022-01-18 05:11:21,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656572505] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:21,184 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:21,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 05:11:21,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990738839] [2022-01-18 05:11:21,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:21,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 05:11:21,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:21,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 05:11:21,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 05:11:21,185 INFO L87 Difference]: Start difference. First operand 135 states and 420 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:21,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:21,296 INFO L93 Difference]: Finished difference Result 228 states and 638 transitions. [2022-01-18 05:11:21,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 05:11:21,296 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 [2022-01-18 05:11:21,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:21,297 INFO L225 Difference]: With dead ends: 228 [2022-01-18 05:11:21,297 INFO L226 Difference]: Without dead ends: 209 [2022-01-18 05:11:21,297 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 [2022-01-18 05:11:21,298 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 39 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:21,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 31 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:21,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-01-18 05:11:21,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 137. [2022-01-18 05:11:21,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 3.139705882352941) internal successors, (427), 136 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:21,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 427 transitions. [2022-01-18 05:11:21,303 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 427 transitions. Word has length 15 [2022-01-18 05:11:21,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:21,303 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 427 transitions. [2022-01-18 05:11:21,303 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) [2022-01-18 05:11:21,303 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 427 transitions. [2022-01-18 05:11:21,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-18 05:11:21,304 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:21,304 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:21,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-18 05:11:21,304 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:21,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:21,305 INFO L85 PathProgramCache]: Analyzing trace with hash 952554009, now seen corresponding path program 6 times [2022-01-18 05:11:21,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:21,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981301842] [2022-01-18 05:11:21,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:21,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:21,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:21,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:21,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:21,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981301842] [2022-01-18 05:11:21,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981301842] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:21,384 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:21,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 05:11:21,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937421153] [2022-01-18 05:11:21,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:21,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 05:11:21,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:21,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 05:11:21,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-18 05:11:21,385 INFO L87 Difference]: Start difference. First operand 137 states and 427 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:21,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:21,468 INFO L93 Difference]: Finished difference Result 195 states and 552 transitions. [2022-01-18 05:11:21,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 05:11:21,469 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 [2022-01-18 05:11:21,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:21,470 INFO L225 Difference]: With dead ends: 195 [2022-01-18 05:11:21,470 INFO L226 Difference]: Without dead ends: 172 [2022-01-18 05:11:21,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:11:21,472 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 28 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:21,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 25 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 05:11:21,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-01-18 05:11:21,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 137. [2022-01-18 05:11:21,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 3.125) internal successors, (425), 136 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:21,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 425 transitions. [2022-01-18 05:11:21,476 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 425 transitions. Word has length 15 [2022-01-18 05:11:21,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:21,476 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 425 transitions. [2022-01-18 05:11:21,476 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) [2022-01-18 05:11:21,477 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 425 transitions. [2022-01-18 05:11:21,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-18 05:11:21,477 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:21,477 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:21,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-18 05:11:21,477 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:21,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:21,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1936277242, now seen corresponding path program 1 times [2022-01-18 05:11:21,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:21,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283987802] [2022-01-18 05:11:21,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:21,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:21,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:21,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:21,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:21,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283987802] [2022-01-18 05:11:21,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283987802] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:21,505 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:21,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 05:11:21,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685423290] [2022-01-18 05:11:21,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:21,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 05:11:21,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:21,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 05:11:21,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 05:11:21,505 INFO L87 Difference]: Start difference. First operand 137 states and 425 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:21,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:21,547 INFO L93 Difference]: Finished difference Result 196 states and 557 transitions. [2022-01-18 05:11:21,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 05:11:21,547 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 [2022-01-18 05:11:21,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:21,548 INFO L225 Difference]: With dead ends: 196 [2022-01-18 05:11:21,548 INFO L226 Difference]: Without dead ends: 173 [2022-01-18 05:11:21,548 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 [2022-01-18 05:11:21,548 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 36 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:21,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 18 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 05:11:21,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-01-18 05:11:21,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 129. [2022-01-18 05:11:21,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 3.0625) internal successors, (392), 128 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:21,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 392 transitions. [2022-01-18 05:11:21,552 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 392 transitions. Word has length 16 [2022-01-18 05:11:21,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:21,552 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 392 transitions. [2022-01-18 05:11:21,552 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) [2022-01-18 05:11:21,553 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 392 transitions. [2022-01-18 05:11:21,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-18 05:11:21,553 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:21,553 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:21,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-18 05:11:21,553 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:21,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:21,555 INFO L85 PathProgramCache]: Analyzing trace with hash -2117348120, now seen corresponding path program 1 times [2022-01-18 05:11:21,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:21,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134562083] [2022-01-18 05:11:21,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:21,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:21,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:21,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:21,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:21,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134562083] [2022-01-18 05:11:21,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134562083] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:21,572 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:21,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 05:11:21,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448822598] [2022-01-18 05:11:21,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:21,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 05:11:21,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:21,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 05:11:21,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 05:11:21,573 INFO L87 Difference]: Start difference. First operand 129 states and 392 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:21,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:21,616 INFO L93 Difference]: Finished difference Result 195 states and 553 transitions. [2022-01-18 05:11:21,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 05:11:21,617 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 [2022-01-18 05:11:21,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:21,618 INFO L225 Difference]: With dead ends: 195 [2022-01-18 05:11:21,618 INFO L226 Difference]: Without dead ends: 195 [2022-01-18 05:11:21,618 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 [2022-01-18 05:11:21,619 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 36 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:21,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 21 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 05:11:21,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-01-18 05:11:21,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 136. [2022-01-18 05:11:21,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 3.022222222222222) internal successors, (408), 135 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:21,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 408 transitions. [2022-01-18 05:11:21,623 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 408 transitions. Word has length 16 [2022-01-18 05:11:21,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:21,624 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 408 transitions. [2022-01-18 05:11:21,624 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) [2022-01-18 05:11:21,624 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 408 transitions. [2022-01-18 05:11:21,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-18 05:11:21,625 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:21,625 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:21,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-18 05:11:21,625 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:21,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:21,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1557952042, now seen corresponding path program 2 times [2022-01-18 05:11:21,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:21,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534113606] [2022-01-18 05:11:21,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:21,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:21,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:21,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:21,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:21,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534113606] [2022-01-18 05:11:21,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534113606] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:21,646 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:21,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 05:11:21,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081508014] [2022-01-18 05:11:21,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:21,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 05:11:21,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:21,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 05:11:21,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 05:11:21,647 INFO L87 Difference]: Start difference. First operand 136 states and 408 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:21,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:21,685 INFO L93 Difference]: Finished difference Result 230 states and 629 transitions. [2022-01-18 05:11:21,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 05:11:21,685 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 [2022-01-18 05:11:21,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:21,686 INFO L225 Difference]: With dead ends: 230 [2022-01-18 05:11:21,686 INFO L226 Difference]: Without dead ends: 215 [2022-01-18 05:11:21,687 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 [2022-01-18 05:11:21,687 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 33 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:21,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 22 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 05:11:21,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2022-01-18 05:11:21,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 136. [2022-01-18 05:11:21,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 2.9925925925925925) internal successors, (404), 135 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:21,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 404 transitions. [2022-01-18 05:11:21,692 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 404 transitions. Word has length 16 [2022-01-18 05:11:21,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:21,692 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 404 transitions. [2022-01-18 05:11:21,692 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) [2022-01-18 05:11:21,692 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 404 transitions. [2022-01-18 05:11:21,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-18 05:11:21,693 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:21,693 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:21,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-18 05:11:21,693 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:21,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:21,694 INFO L85 PathProgramCache]: Analyzing trace with hash 65237616, now seen corresponding path program 3 times [2022-01-18 05:11:21,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:21,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923749201] [2022-01-18 05:11:21,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:21,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:21,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:21,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:21,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:21,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923749201] [2022-01-18 05:11:21,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923749201] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:21,710 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:21,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 05:11:21,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282968878] [2022-01-18 05:11:21,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:21,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 05:11:21,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:21,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 05:11:21,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 05:11:21,711 INFO L87 Difference]: Start difference. First operand 136 states and 404 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:21,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:21,747 INFO L93 Difference]: Finished difference Result 178 states and 497 transitions. [2022-01-18 05:11:21,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-18 05:11:21,747 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 [2022-01-18 05:11:21,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:21,748 INFO L225 Difference]: With dead ends: 178 [2022-01-18 05:11:21,748 INFO L226 Difference]: Without dead ends: 168 [2022-01-18 05:11:21,748 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 [2022-01-18 05:11:21,748 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 19 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:21,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 24 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 05:11:21,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-01-18 05:11:21,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 132. [2022-01-18 05:11:21,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 3.0229007633587788) internal successors, (396), 131 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:21,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 396 transitions. [2022-01-18 05:11:21,753 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 396 transitions. Word has length 16 [2022-01-18 05:11:21,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:21,753 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 396 transitions. [2022-01-18 05:11:21,753 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) [2022-01-18 05:11:21,753 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 396 transitions. [2022-01-18 05:11:21,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-18 05:11:21,754 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:21,754 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:21,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-18 05:11:21,754 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:21,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:21,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1404034676, now seen corresponding path program 2 times [2022-01-18 05:11:21,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:21,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836353655] [2022-01-18 05:11:21,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:21,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:21,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:21,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:21,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:21,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836353655] [2022-01-18 05:11:21,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836353655] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:21,780 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:21,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 05:11:21,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091117778] [2022-01-18 05:11:21,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:21,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 05:11:21,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:21,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 05:11:21,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 05:11:21,781 INFO L87 Difference]: Start difference. First operand 132 states and 396 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:21,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:21,820 INFO L93 Difference]: Finished difference Result 156 states and 449 transitions. [2022-01-18 05:11:21,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 05:11:21,820 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 [2022-01-18 05:11:21,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:21,821 INFO L225 Difference]: With dead ends: 156 [2022-01-18 05:11:21,821 INFO L226 Difference]: Without dead ends: 156 [2022-01-18 05:11:21,821 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 [2022-01-18 05:11:21,822 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 31 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:21,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 22 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 05:11:21,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-01-18 05:11:21,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 110. [2022-01-18 05:11:21,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 2.9174311926605503) internal successors, (318), 109 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:21,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 318 transitions. [2022-01-18 05:11:21,826 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 318 transitions. Word has length 16 [2022-01-18 05:11:21,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:21,826 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 318 transitions. [2022-01-18 05:11:21,826 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) [2022-01-18 05:11:21,827 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 318 transitions. [2022-01-18 05:11:21,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-18 05:11:21,827 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:21,827 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:21,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-18 05:11:21,827 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:21,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:21,828 INFO L85 PathProgramCache]: Analyzing trace with hash -715157808, now seen corresponding path program 3 times [2022-01-18 05:11:21,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:21,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585834754] [2022-01-18 05:11:21,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:21,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:21,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:21,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:21,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:21,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585834754] [2022-01-18 05:11:21,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585834754] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:21,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:21,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 05:11:21,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168543076] [2022-01-18 05:11:21,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:21,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 05:11:21,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:21,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 05:11:21,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 05:11:21,855 INFO L87 Difference]: Start difference. First operand 110 states and 318 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:21,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:21,885 INFO L93 Difference]: Finished difference Result 152 states and 411 transitions. [2022-01-18 05:11:21,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-18 05:11:21,885 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 [2022-01-18 05:11:21,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:21,886 INFO L225 Difference]: With dead ends: 152 [2022-01-18 05:11:21,886 INFO L226 Difference]: Without dead ends: 146 [2022-01-18 05:11:21,886 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 [2022-01-18 05:11:21,887 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 20 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:21,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 20 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 05:11:21,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-01-18 05:11:21,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 110. [2022-01-18 05:11:21,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 2.889908256880734) internal successors, (315), 109 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:21,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 315 transitions. [2022-01-18 05:11:21,891 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 315 transitions. Word has length 16 [2022-01-18 05:11:21,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:21,891 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 315 transitions. [2022-01-18 05:11:21,891 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) [2022-01-18 05:11:21,892 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 315 transitions. [2022-01-18 05:11:21,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-18 05:11:21,892 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:21,892 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:21,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-18 05:11:21,892 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:21,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:21,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1977207948, now seen corresponding path program 4 times [2022-01-18 05:11:21,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:21,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308631252] [2022-01-18 05:11:21,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:21,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:21,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:21,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:21,914 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:21,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308631252] [2022-01-18 05:11:21,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308631252] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:21,914 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:21,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 05:11:21,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731088914] [2022-01-18 05:11:21,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:21,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 05:11:21,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:21,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 05:11:21,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 05:11:21,916 INFO L87 Difference]: Start difference. First operand 110 states and 315 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:21,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:21,939 INFO L93 Difference]: Finished difference Result 116 states and 324 transitions. [2022-01-18 05:11:21,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-18 05:11:21,939 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 [2022-01-18 05:11:21,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:21,940 INFO L225 Difference]: With dead ends: 116 [2022-01-18 05:11:21,941 INFO L226 Difference]: Without dead ends: 108 [2022-01-18 05:11:21,941 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 [2022-01-18 05:11:21,941 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 8 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:21,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 17 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 05:11:21,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-01-18 05:11:21,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2022-01-18 05:11:21,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 2.9065420560747666) internal successors, (311), 107 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:21,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 311 transitions. [2022-01-18 05:11:21,945 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 311 transitions. Word has length 16 [2022-01-18 05:11:21,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:21,945 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 311 transitions. [2022-01-18 05:11:21,945 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) [2022-01-18 05:11:21,945 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 311 transitions. [2022-01-18 05:11:21,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-18 05:11:21,946 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:21,946 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:21,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-18 05:11:21,946 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:21,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:21,946 INFO L85 PathProgramCache]: Analyzing trace with hash 716372970, now seen corresponding path program 4 times [2022-01-18 05:11:21,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:21,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857399158] [2022-01-18 05:11:21,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:21,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:21,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:21,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:21,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:21,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857399158] [2022-01-18 05:11:21,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857399158] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:21,963 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:21,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 05:11:21,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129043550] [2022-01-18 05:11:21,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:21,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 05:11:21,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:21,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 05:11:21,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 05:11:21,964 INFO L87 Difference]: Start difference. First operand 108 states and 311 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:21,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:21,991 INFO L93 Difference]: Finished difference Result 114 states and 320 transitions. [2022-01-18 05:11:21,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-18 05:11:21,991 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 [2022-01-18 05:11:21,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:21,992 INFO L225 Difference]: With dead ends: 114 [2022-01-18 05:11:21,992 INFO L226 Difference]: Without dead ends: 108 [2022-01-18 05:11:21,993 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 [2022-01-18 05:11:21,995 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 20 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:21,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 17 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 05:11:21,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-01-18 05:11:21,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2022-01-18 05:11:21,998 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) [2022-01-18 05:11:21,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 308 transitions. [2022-01-18 05:11:21,998 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 308 transitions. Word has length 16 [2022-01-18 05:11:21,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:21,998 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 308 transitions. [2022-01-18 05:11:21,998 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) [2022-01-18 05:11:21,998 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 308 transitions. [2022-01-18 05:11:21,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:22,000 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:22,000 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:22,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-18 05:11:22,000 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:22,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:22,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1183091529, now seen corresponding path program 1 times [2022-01-18 05:11:22,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:22,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651693795] [2022-01-18 05:11:22,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:22,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:22,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:22,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:22,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:22,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651693795] [2022-01-18 05:11:22,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651693795] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:22,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:22,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:22,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246402257] [2022-01-18 05:11:22,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:22,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:22,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:22,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:22,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:22,124 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) [2022-01-18 05:11:22,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:22,290 INFO L93 Difference]: Finished difference Result 265 states and 721 transitions. [2022-01-18 05:11:22,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:22,290 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 [2022-01-18 05:11:22,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:22,292 INFO L225 Difference]: With dead ends: 265 [2022-01-18 05:11:22,292 INFO L226 Difference]: Without dead ends: 250 [2022-01-18 05:11:22,292 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 [2022-01-18 05:11:22,292 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 72 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:22,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 63 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:22,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-01-18 05:11:22,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 141. [2022-01-18 05:11:22,296 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) [2022-01-18 05:11:22,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 391 transitions. [2022-01-18 05:11:22,297 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 391 transitions. Word has length 17 [2022-01-18 05:11:22,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:22,297 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 391 transitions. [2022-01-18 05:11:22,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:22,297 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 391 transitions. [2022-01-18 05:11:22,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:22,298 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:22,298 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:22,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-18 05:11:22,298 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:22,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:22,298 INFO L85 PathProgramCache]: Analyzing trace with hash 922093723, now seen corresponding path program 2 times [2022-01-18 05:11:22,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:22,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851645376] [2022-01-18 05:11:22,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:22,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:22,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:22,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:22,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:22,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851645376] [2022-01-18 05:11:22,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851645376] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:22,383 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:22,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:22,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455199327] [2022-01-18 05:11:22,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:22,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:22,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:22,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:22,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:22,384 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) [2022-01-18 05:11:22,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:22,597 INFO L93 Difference]: Finished difference Result 298 states and 795 transitions. [2022-01-18 05:11:22,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:22,597 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 [2022-01-18 05:11:22,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:22,599 INFO L225 Difference]: With dead ends: 298 [2022-01-18 05:11:22,599 INFO L226 Difference]: Without dead ends: 283 [2022-01-18 05:11:22,599 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 [2022-01-18 05:11:22,599 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 75 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:22,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 71 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:22,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2022-01-18 05:11:22,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 150. [2022-01-18 05:11:22,604 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) [2022-01-18 05:11:22,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 418 transitions. [2022-01-18 05:11:22,604 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 418 transitions. Word has length 17 [2022-01-18 05:11:22,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:22,605 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 418 transitions. [2022-01-18 05:11:22,605 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) [2022-01-18 05:11:22,605 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 418 transitions. [2022-01-18 05:11:22,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:22,605 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:22,605 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:22,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-18 05:11:22,606 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:22,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:22,606 INFO L85 PathProgramCache]: Analyzing trace with hash 944690271, now seen corresponding path program 3 times [2022-01-18 05:11:22,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:22,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376371550] [2022-01-18 05:11:22,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:22,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:22,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:22,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:22,682 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:22,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376371550] [2022-01-18 05:11:22,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376371550] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:22,682 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:22,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:22,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315087508] [2022-01-18 05:11:22,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:22,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:22,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:22,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:22,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:22,683 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) [2022-01-18 05:11:22,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:22,882 INFO L93 Difference]: Finished difference Result 281 states and 763 transitions. [2022-01-18 05:11:22,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:22,883 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 [2022-01-18 05:11:22,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:22,884 INFO L225 Difference]: With dead ends: 281 [2022-01-18 05:11:22,884 INFO L226 Difference]: Without dead ends: 266 [2022-01-18 05:11:22,884 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 [2022-01-18 05:11:22,884 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 70 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:22,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 68 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:22,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-01-18 05:11:22,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 150. [2022-01-18 05:11:22,888 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) [2022-01-18 05:11:22,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 418 transitions. [2022-01-18 05:11:22,888 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 418 transitions. Word has length 17 [2022-01-18 05:11:22,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:22,888 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 418 transitions. [2022-01-18 05:11:22,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:22,888 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 418 transitions. [2022-01-18 05:11:22,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:22,889 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:22,889 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:22,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-18 05:11:22,889 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:22,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:22,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1408578059, now seen corresponding path program 4 times [2022-01-18 05:11:22,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:22,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414332762] [2022-01-18 05:11:22,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:22,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:22,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:22,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:22,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:22,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414332762] [2022-01-18 05:11:22,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414332762] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:22,966 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:22,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:22,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277803728] [2022-01-18 05:11:22,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:22,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:22,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:22,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:22,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:22,967 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) [2022-01-18 05:11:23,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:23,132 INFO L93 Difference]: Finished difference Result 289 states and 784 transitions. [2022-01-18 05:11:23,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:23,132 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 [2022-01-18 05:11:23,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:23,133 INFO L225 Difference]: With dead ends: 289 [2022-01-18 05:11:23,133 INFO L226 Difference]: Without dead ends: 274 [2022-01-18 05:11:23,134 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 [2022-01-18 05:11:23,134 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 76 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:23,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 59 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:23,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-01-18 05:11:23,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 159. [2022-01-18 05:11:23,137 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) [2022-01-18 05:11:23,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 442 transitions. [2022-01-18 05:11:23,138 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 442 transitions. Word has length 17 [2022-01-18 05:11:23,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:23,138 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 442 transitions. [2022-01-18 05:11:23,138 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) [2022-01-18 05:11:23,138 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 442 transitions. [2022-01-18 05:11:23,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:23,139 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:23,139 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:23,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-18 05:11:23,139 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:23,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:23,139 INFO L85 PathProgramCache]: Analyzing trace with hash 386863921, now seen corresponding path program 5 times [2022-01-18 05:11:23,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:23,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406530383] [2022-01-18 05:11:23,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:23,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:23,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:23,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:23,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:23,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406530383] [2022-01-18 05:11:23,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406530383] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:23,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:23,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:23,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667357214] [2022-01-18 05:11:23,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:23,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:23,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:23,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:23,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:23,228 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) [2022-01-18 05:11:23,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:23,437 INFO L93 Difference]: Finished difference Result 322 states and 859 transitions. [2022-01-18 05:11:23,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:23,437 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 [2022-01-18 05:11:23,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:23,439 INFO L225 Difference]: With dead ends: 322 [2022-01-18 05:11:23,439 INFO L226 Difference]: Without dead ends: 307 [2022-01-18 05:11:23,439 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 [2022-01-18 05:11:23,439 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 82 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:23,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 68 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:23,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2022-01-18 05:11:23,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 162. [2022-01-18 05:11:23,444 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) [2022-01-18 05:11:23,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 456 transitions. [2022-01-18 05:11:23,444 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 456 transitions. Word has length 17 [2022-01-18 05:11:23,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:23,444 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 456 transitions. [2022-01-18 05:11:23,444 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) [2022-01-18 05:11:23,444 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 456 transitions. [2022-01-18 05:11:23,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:23,445 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:23,445 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:23,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-18 05:11:23,445 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:23,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:23,445 INFO L85 PathProgramCache]: Analyzing trace with hash 409460469, now seen corresponding path program 6 times [2022-01-18 05:11:23,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:23,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188742069] [2022-01-18 05:11:23,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:23,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:23,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:23,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:23,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:23,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188742069] [2022-01-18 05:11:23,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188742069] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:23,523 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:23,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:23,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919775390] [2022-01-18 05:11:23,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:23,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:23,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:23,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:23,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:23,524 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) [2022-01-18 05:11:23,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:23,724 INFO L93 Difference]: Finished difference Result 299 states and 814 transitions. [2022-01-18 05:11:23,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:23,724 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 [2022-01-18 05:11:23,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:23,726 INFO L225 Difference]: With dead ends: 299 [2022-01-18 05:11:23,726 INFO L226 Difference]: Without dead ends: 284 [2022-01-18 05:11:23,726 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 [2022-01-18 05:11:23,726 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 67 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:23,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 68 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:23,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-01-18 05:11:23,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 159. [2022-01-18 05:11:23,730 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) [2022-01-18 05:11:23,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 442 transitions. [2022-01-18 05:11:23,730 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 442 transitions. Word has length 17 [2022-01-18 05:11:23,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:23,730 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 442 transitions. [2022-01-18 05:11:23,730 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) [2022-01-18 05:11:23,730 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 442 transitions. [2022-01-18 05:11:23,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:23,731 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:23,731 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:23,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-18 05:11:23,731 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:23,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:23,731 INFO L85 PathProgramCache]: Analyzing trace with hash 868897657, now seen corresponding path program 7 times [2022-01-18 05:11:23,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:23,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615620089] [2022-01-18 05:11:23,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:23,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:23,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:23,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:23,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:23,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615620089] [2022-01-18 05:11:23,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615620089] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:23,794 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:23,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:23,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716956553] [2022-01-18 05:11:23,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:23,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:23,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:23,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:23,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:23,795 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) [2022-01-18 05:11:23,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:23,971 INFO L93 Difference]: Finished difference Result 389 states and 1040 transitions. [2022-01-18 05:11:23,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:23,971 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 [2022-01-18 05:11:23,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:23,972 INFO L225 Difference]: With dead ends: 389 [2022-01-18 05:11:23,972 INFO L226 Difference]: Without dead ends: 374 [2022-01-18 05:11:23,972 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 [2022-01-18 05:11:23,973 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 90 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:23,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 65 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:23,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-01-18 05:11:23,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 166. [2022-01-18 05:11:23,977 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) [2022-01-18 05:11:23,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 470 transitions. [2022-01-18 05:11:23,977 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 470 transitions. Word has length 17 [2022-01-18 05:11:23,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:23,977 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 470 transitions. [2022-01-18 05:11:23,977 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) [2022-01-18 05:11:23,978 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 470 transitions. [2022-01-18 05:11:23,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:23,978 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:23,978 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:23,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-18 05:11:23,978 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:23,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:23,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1320884387, now seen corresponding path program 8 times [2022-01-18 05:11:23,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:23,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495623047] [2022-01-18 05:11:23,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:23,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:23,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:24,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:24,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:24,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495623047] [2022-01-18 05:11:24,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495623047] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:24,062 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:24,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:24,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823373302] [2022-01-18 05:11:24,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:24,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:24,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:24,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:24,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:24,063 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) [2022-01-18 05:11:24,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:24,272 INFO L93 Difference]: Finished difference Result 398 states and 1066 transitions. [2022-01-18 05:11:24,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:24,272 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 [2022-01-18 05:11:24,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:24,274 INFO L225 Difference]: With dead ends: 398 [2022-01-18 05:11:24,274 INFO L226 Difference]: Without dead ends: 383 [2022-01-18 05:11:24,274 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 [2022-01-18 05:11:24,274 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 85 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:24,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 74 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:24,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2022-01-18 05:11:24,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 169. [2022-01-18 05:11:24,279 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) [2022-01-18 05:11:24,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 484 transitions. [2022-01-18 05:11:24,279 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 484 transitions. Word has length 17 [2022-01-18 05:11:24,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:24,279 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 484 transitions. [2022-01-18 05:11:24,279 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) [2022-01-18 05:11:24,279 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 484 transitions. [2022-01-18 05:11:24,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:24,280 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:24,280 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:24,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-18 05:11:24,280 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:24,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:24,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1298287839, now seen corresponding path program 9 times [2022-01-18 05:11:24,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:24,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579808750] [2022-01-18 05:11:24,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:24,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:24,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:24,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:24,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:24,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579808750] [2022-01-18 05:11:24,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579808750] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:24,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:24,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:24,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409990907] [2022-01-18 05:11:24,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:24,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:24,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:24,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:24,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:24,352 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) [2022-01-18 05:11:24,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:24,549 INFO L93 Difference]: Finished difference Result 405 states and 1082 transitions. [2022-01-18 05:11:24,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:24,549 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 [2022-01-18 05:11:24,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:24,551 INFO L225 Difference]: With dead ends: 405 [2022-01-18 05:11:24,551 INFO L226 Difference]: Without dead ends: 390 [2022-01-18 05:11:24,551 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 [2022-01-18 05:11:24,552 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 86 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:24,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 68 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:24,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2022-01-18 05:11:24,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 161. [2022-01-18 05:11:24,556 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) [2022-01-18 05:11:24,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 452 transitions. [2022-01-18 05:11:24,556 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 452 transitions. Word has length 17 [2022-01-18 05:11:24,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:24,556 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 452 transitions. [2022-01-18 05:11:24,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:24,556 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 452 transitions. [2022-01-18 05:11:24,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:24,557 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:24,557 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:24,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-18 05:11:24,557 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:24,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:24,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1429044949, now seen corresponding path program 10 times [2022-01-18 05:11:24,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:24,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461954317] [2022-01-18 05:11:24,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:24,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:24,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:24,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:24,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:24,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461954317] [2022-01-18 05:11:24,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461954317] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:24,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:24,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:24,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307842961] [2022-01-18 05:11:24,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:24,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:24,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:24,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:24,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:24,630 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) [2022-01-18 05:11:24,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:24,765 INFO L93 Difference]: Finished difference Result 340 states and 918 transitions. [2022-01-18 05:11:24,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:24,765 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 [2022-01-18 05:11:24,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:24,766 INFO L225 Difference]: With dead ends: 340 [2022-01-18 05:11:24,766 INFO L226 Difference]: Without dead ends: 325 [2022-01-18 05:11:24,767 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 [2022-01-18 05:11:24,767 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 69 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:24,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 73 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:24,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2022-01-18 05:11:24,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 165. [2022-01-18 05:11:24,771 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) [2022-01-18 05:11:24,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 466 transitions. [2022-01-18 05:11:24,771 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 466 transitions. Word has length 17 [2022-01-18 05:11:24,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:24,771 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 466 transitions. [2022-01-18 05:11:24,771 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) [2022-01-18 05:11:24,771 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 466 transitions. [2022-01-18 05:11:24,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:24,772 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:24,772 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:24,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-18 05:11:24,772 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:24,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:24,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1020348439, now seen corresponding path program 11 times [2022-01-18 05:11:24,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:24,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371796157] [2022-01-18 05:11:24,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:24,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:24,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:24,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:24,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:24,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371796157] [2022-01-18 05:11:24,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371796157] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:24,840 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:24,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:24,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693854640] [2022-01-18 05:11:24,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:24,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:24,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:24,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:24,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:24,841 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) [2022-01-18 05:11:24,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:24,981 INFO L93 Difference]: Finished difference Result 335 states and 909 transitions. [2022-01-18 05:11:24,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:24,981 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 [2022-01-18 05:11:24,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:24,983 INFO L225 Difference]: With dead ends: 335 [2022-01-18 05:11:24,983 INFO L226 Difference]: Without dead ends: 320 [2022-01-18 05:11:24,983 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 [2022-01-18 05:11:24,983 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 86 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:24,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 62 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:24,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2022-01-18 05:11:24,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 171. [2022-01-18 05:11:24,987 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) [2022-01-18 05:11:24,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 483 transitions. [2022-01-18 05:11:24,987 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 483 transitions. Word has length 17 [2022-01-18 05:11:24,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:24,987 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 483 transitions. [2022-01-18 05:11:24,988 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) [2022-01-18 05:11:24,988 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 483 transitions. [2022-01-18 05:11:24,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:24,988 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:24,988 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:24,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-18 05:11:24,988 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:24,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:24,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1984237037, now seen corresponding path program 12 times [2022-01-18 05:11:24,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:24,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548296833] [2022-01-18 05:11:24,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:24,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:24,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:25,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:25,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:25,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548296833] [2022-01-18 05:11:25,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548296833] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:25,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:25,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:25,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908564502] [2022-01-18 05:11:25,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:25,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:25,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:25,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:25,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:25,039 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) [2022-01-18 05:11:25,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:25,182 INFO L93 Difference]: Finished difference Result 318 states and 879 transitions. [2022-01-18 05:11:25,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:25,182 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 [2022-01-18 05:11:25,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:25,183 INFO L225 Difference]: With dead ends: 318 [2022-01-18 05:11:25,183 INFO L226 Difference]: Without dead ends: 303 [2022-01-18 05:11:25,184 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 [2022-01-18 05:11:25,184 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 61 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:25,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 67 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:25,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2022-01-18 05:11:25,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 171. [2022-01-18 05:11:25,187 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) [2022-01-18 05:11:25,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 483 transitions. [2022-01-18 05:11:25,188 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 483 transitions. Word has length 17 [2022-01-18 05:11:25,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:25,188 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 483 transitions. [2022-01-18 05:11:25,188 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) [2022-01-18 05:11:25,188 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 483 transitions. [2022-01-18 05:11:25,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:25,188 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:25,189 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:25,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-18 05:11:25,189 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:25,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:25,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1369703401, now seen corresponding path program 13 times [2022-01-18 05:11:25,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:25,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511290827] [2022-01-18 05:11:25,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:25,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:25,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:25,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:25,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:25,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511290827] [2022-01-18 05:11:25,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511290827] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:25,238 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:25,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:25,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11057959] [2022-01-18 05:11:25,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:25,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:25,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:25,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:25,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:25,239 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) [2022-01-18 05:11:25,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:25,369 INFO L93 Difference]: Finished difference Result 385 states and 1046 transitions. [2022-01-18 05:11:25,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:25,369 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 [2022-01-18 05:11:25,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:25,372 INFO L225 Difference]: With dead ends: 385 [2022-01-18 05:11:25,372 INFO L226 Difference]: Without dead ends: 370 [2022-01-18 05:11:25,372 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:11:25,373 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 87 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:25,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 67 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:25,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2022-01-18 05:11:25,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 174. [2022-01-18 05:11:25,376 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) [2022-01-18 05:11:25,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 498 transitions. [2022-01-18 05:11:25,377 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 498 transitions. Word has length 17 [2022-01-18 05:11:25,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:25,377 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 498 transitions. [2022-01-18 05:11:25,377 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) [2022-01-18 05:11:25,377 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 498 transitions. [2022-01-18 05:11:25,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:25,378 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:25,378 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:25,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-18 05:11:25,378 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:25,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:25,378 INFO L85 PathProgramCache]: Analyzing trace with hash 615247419, now seen corresponding path program 14 times [2022-01-18 05:11:25,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:25,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471296875] [2022-01-18 05:11:25,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:25,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:25,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:25,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:25,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:25,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471296875] [2022-01-18 05:11:25,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471296875] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:25,438 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:25,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:25,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300808646] [2022-01-18 05:11:25,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:25,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:25,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:25,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:25,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:25,439 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) [2022-01-18 05:11:25,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:25,601 INFO L93 Difference]: Finished difference Result 383 states and 1039 transitions. [2022-01-18 05:11:25,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:25,601 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 [2022-01-18 05:11:25,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:25,603 INFO L225 Difference]: With dead ends: 383 [2022-01-18 05:11:25,603 INFO L226 Difference]: Without dead ends: 368 [2022-01-18 05:11:25,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:11:25,603 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 79 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:25,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 71 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:25,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2022-01-18 05:11:25,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 174. [2022-01-18 05:11:25,607 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) [2022-01-18 05:11:25,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 498 transitions. [2022-01-18 05:11:25,607 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 498 transitions. Word has length 17 [2022-01-18 05:11:25,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:25,607 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 498 transitions. [2022-01-18 05:11:25,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:25,607 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 498 transitions. [2022-01-18 05:11:25,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:25,608 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:25,608 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:25,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-18 05:11:25,608 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:25,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:25,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1736644371, now seen corresponding path program 15 times [2022-01-18 05:11:25,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:25,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049009926] [2022-01-18 05:11:25,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:25,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:25,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:25,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:25,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:25,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049009926] [2022-01-18 05:11:25,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049009926] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:25,672 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:25,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:25,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576270639] [2022-01-18 05:11:25,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:25,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:25,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:25,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:25,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:25,673 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) [2022-01-18 05:11:25,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:25,866 INFO L93 Difference]: Finished difference Result 392 states and 1055 transitions. [2022-01-18 05:11:25,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:25,866 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 [2022-01-18 05:11:25,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:25,867 INFO L225 Difference]: With dead ends: 392 [2022-01-18 05:11:25,867 INFO L226 Difference]: Without dead ends: 377 [2022-01-18 05:11:25,867 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 [2022-01-18 05:11:25,868 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 79 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:25,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 74 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:25,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-01-18 05:11:25,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 177. [2022-01-18 05:11:25,872 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) [2022-01-18 05:11:25,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 512 transitions. [2022-01-18 05:11:25,872 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 512 transitions. Word has length 17 [2022-01-18 05:11:25,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:25,872 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 512 transitions. [2022-01-18 05:11:25,872 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) [2022-01-18 05:11:25,872 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 512 transitions. [2022-01-18 05:11:25,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:25,873 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:25,873 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:25,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-18 05:11:25,873 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:25,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:25,873 INFO L85 PathProgramCache]: Analyzing trace with hash 776503703, now seen corresponding path program 16 times [2022-01-18 05:11:25,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:25,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771533451] [2022-01-18 05:11:25,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:25,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:25,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:25,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:25,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:25,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771533451] [2022-01-18 05:11:25,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771533451] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:25,941 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:25,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:25,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761484433] [2022-01-18 05:11:25,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:25,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:25,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:25,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:25,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:25,942 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) [2022-01-18 05:11:26,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:26,110 INFO L93 Difference]: Finished difference Result 376 states and 1032 transitions. [2022-01-18 05:11:26,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:26,110 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 [2022-01-18 05:11:26,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:26,112 INFO L225 Difference]: With dead ends: 376 [2022-01-18 05:11:26,112 INFO L226 Difference]: Without dead ends: 361 [2022-01-18 05:11:26,112 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 [2022-01-18 05:11:26,112 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 65 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:26,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 73 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:26,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2022-01-18 05:11:26,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 174. [2022-01-18 05:11:26,116 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) [2022-01-18 05:11:26,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 498 transitions. [2022-01-18 05:11:26,116 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 498 transitions. Word has length 17 [2022-01-18 05:11:26,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:26,117 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 498 transitions. [2022-01-18 05:11:26,117 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) [2022-01-18 05:11:26,117 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 498 transitions. [2022-01-18 05:11:26,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:26,117 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:26,117 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:26,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-18 05:11:26,117 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:26,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:26,118 INFO L85 PathProgramCache]: Analyzing trace with hash -520856585, now seen corresponding path program 17 times [2022-01-18 05:11:26,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:26,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630543847] [2022-01-18 05:11:26,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:26,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:26,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:26,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:26,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:26,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630543847] [2022-01-18 05:11:26,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630543847] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:26,171 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:26,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:26,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947769124] [2022-01-18 05:11:26,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:26,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:26,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:26,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:26,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:26,171 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) [2022-01-18 05:11:26,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:26,326 INFO L93 Difference]: Finished difference Result 364 states and 991 transitions. [2022-01-18 05:11:26,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:26,327 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 [2022-01-18 05:11:26,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:26,328 INFO L225 Difference]: With dead ends: 364 [2022-01-18 05:11:26,328 INFO L226 Difference]: Without dead ends: 349 [2022-01-18 05:11:26,329 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 [2022-01-18 05:11:26,329 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 71 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:26,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 72 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:26,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2022-01-18 05:11:26,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 176. [2022-01-18 05:11:26,333 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) [2022-01-18 05:11:26,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 507 transitions. [2022-01-18 05:11:26,333 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 507 transitions. Word has length 17 [2022-01-18 05:11:26,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:26,334 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 507 transitions. [2022-01-18 05:11:26,334 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) [2022-01-18 05:11:26,334 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 507 transitions. [2022-01-18 05:11:26,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:26,334 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:26,334 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:26,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-18 05:11:26,334 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:26,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:26,335 INFO L85 PathProgramCache]: Analyzing trace with hash 826274171, now seen corresponding path program 18 times [2022-01-18 05:11:26,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:26,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718930249] [2022-01-18 05:11:26,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:26,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:26,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:26,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:26,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:26,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718930249] [2022-01-18 05:11:26,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718930249] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:26,389 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:26,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:26,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694276997] [2022-01-18 05:11:26,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:26,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:26,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:26,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:26,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:26,390 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) [2022-01-18 05:11:26,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:26,528 INFO L93 Difference]: Finished difference Result 343 states and 953 transitions. [2022-01-18 05:11:26,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:26,528 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 [2022-01-18 05:11:26,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:26,530 INFO L225 Difference]: With dead ends: 343 [2022-01-18 05:11:26,530 INFO L226 Difference]: Without dead ends: 328 [2022-01-18 05:11:26,530 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 [2022-01-18 05:11:26,530 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 56 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:26,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 74 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:26,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2022-01-18 05:11:26,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 174. [2022-01-18 05:11:26,533 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) [2022-01-18 05:11:26,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 498 transitions. [2022-01-18 05:11:26,534 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 498 transitions. Word has length 17 [2022-01-18 05:11:26,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:26,534 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 498 transitions. [2022-01-18 05:11:26,534 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) [2022-01-18 05:11:26,534 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 498 transitions. [2022-01-18 05:11:26,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:26,534 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:26,534 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:26,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-18 05:11:26,534 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:26,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:26,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1248454179, now seen corresponding path program 19 times [2022-01-18 05:11:26,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:26,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137961964] [2022-01-18 05:11:26,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:26,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:26,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:26,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:26,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:26,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137961964] [2022-01-18 05:11:26,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137961964] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:26,593 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:26,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:26,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516656310] [2022-01-18 05:11:26,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:26,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:26,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:26,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:26,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:26,594 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) [2022-01-18 05:11:26,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:26,728 INFO L93 Difference]: Finished difference Result 360 states and 983 transitions. [2022-01-18 05:11:26,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:26,728 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 [2022-01-18 05:11:26,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:26,729 INFO L225 Difference]: With dead ends: 360 [2022-01-18 05:11:26,729 INFO L226 Difference]: Without dead ends: 345 [2022-01-18 05:11:26,729 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 [2022-01-18 05:11:26,730 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 68 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:26,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 73 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:26,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2022-01-18 05:11:26,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 177. [2022-01-18 05:11:26,733 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) [2022-01-18 05:11:26,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 510 transitions. [2022-01-18 05:11:26,733 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 510 transitions. Word has length 17 [2022-01-18 05:11:26,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:26,733 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 510 transitions. [2022-01-18 05:11:26,733 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) [2022-01-18 05:11:26,734 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 510 transitions. [2022-01-18 05:11:26,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:26,734 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:26,734 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:26,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-18 05:11:26,734 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:26,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:26,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1971453827, now seen corresponding path program 20 times [2022-01-18 05:11:26,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:26,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74042501] [2022-01-18 05:11:26,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:26,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:26,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:26,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:26,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:26,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74042501] [2022-01-18 05:11:26,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74042501] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:26,791 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:26,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:26,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508994772] [2022-01-18 05:11:26,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:26,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:26,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:26,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:26,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:26,793 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) [2022-01-18 05:11:26,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:26,939 INFO L93 Difference]: Finished difference Result 377 states and 1017 transitions. [2022-01-18 05:11:26,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:26,940 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 [2022-01-18 05:11:26,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:26,941 INFO L225 Difference]: With dead ends: 377 [2022-01-18 05:11:26,941 INFO L226 Difference]: Without dead ends: 362 [2022-01-18 05:11:26,941 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 [2022-01-18 05:11:26,942 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 80 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:26,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 73 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:26,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2022-01-18 05:11:26,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 179. [2022-01-18 05:11:26,945 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) [2022-01-18 05:11:26,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 519 transitions. [2022-01-18 05:11:26,945 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 519 transitions. Word has length 17 [2022-01-18 05:11:26,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:26,946 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 519 transitions. [2022-01-18 05:11:26,946 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) [2022-01-18 05:11:26,946 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 519 transitions. [2022-01-18 05:11:26,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:26,946 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:26,946 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:26,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-18 05:11:26,946 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:26,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:26,947 INFO L85 PathProgramCache]: Analyzing trace with hash 13496993, now seen corresponding path program 21 times [2022-01-18 05:11:26,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:26,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455107466] [2022-01-18 05:11:26,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:26,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:26,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:27,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:27,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:27,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455107466] [2022-01-18 05:11:27,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455107466] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:27,003 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:27,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:27,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050321189] [2022-01-18 05:11:27,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:27,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:27,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:27,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:27,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:27,004 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) [2022-01-18 05:11:27,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:27,159 INFO L93 Difference]: Finished difference Result 354 states and 972 transitions. [2022-01-18 05:11:27,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:27,159 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 [2022-01-18 05:11:27,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:27,160 INFO L225 Difference]: With dead ends: 354 [2022-01-18 05:11:27,161 INFO L226 Difference]: Without dead ends: 339 [2022-01-18 05:11:27,161 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 [2022-01-18 05:11:27,161 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 69 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:27,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 74 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:27,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2022-01-18 05:11:27,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 177. [2022-01-18 05:11:27,170 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) [2022-01-18 05:11:27,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 510 transitions. [2022-01-18 05:11:27,170 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 510 transitions. Word has length 17 [2022-01-18 05:11:27,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:27,170 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 510 transitions. [2022-01-18 05:11:27,170 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) [2022-01-18 05:11:27,170 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 510 transitions. [2022-01-18 05:11:27,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:27,171 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:27,171 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:27,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-18 05:11:27,171 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:27,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:27,171 INFO L85 PathProgramCache]: Analyzing trace with hash 559046241, now seen corresponding path program 22 times [2022-01-18 05:11:27,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:27,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379552181] [2022-01-18 05:11:27,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:27,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:27,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:27,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:27,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:27,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379552181] [2022-01-18 05:11:27,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379552181] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:27,234 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:27,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:27,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862103211] [2022-01-18 05:11:27,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:27,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:27,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:27,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:27,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:27,234 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) [2022-01-18 05:11:27,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:27,409 INFO L93 Difference]: Finished difference Result 409 states and 1106 transitions. [2022-01-18 05:11:27,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:27,410 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 05:11:27,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:27,411 INFO L225 Difference]: With dead ends: 409 [2022-01-18 05:11:27,411 INFO L226 Difference]: Without dead ends: 394 [2022-01-18 05:11:27,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-18 05:11:27,412 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 [2022-01-18 05:11:27,412 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] [2022-01-18 05:11:27,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2022-01-18 05:11:27,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 180. [2022-01-18 05:11:27,415 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) [2022-01-18 05:11:27,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 521 transitions. [2022-01-18 05:11:27,415 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 521 transitions. Word has length 17 [2022-01-18 05:11:27,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:27,416 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 521 transitions. [2022-01-18 05:11:27,416 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) [2022-01-18 05:11:27,416 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 521 transitions. [2022-01-18 05:11:27,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:27,416 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:27,416 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:27,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-01-18 05:11:27,416 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:27,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:27,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1954405597, now seen corresponding path program 23 times [2022-01-18 05:11:27,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:27,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028202418] [2022-01-18 05:11:27,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:27,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:27,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:27,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:27,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:27,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028202418] [2022-01-18 05:11:27,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028202418] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:27,479 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:27,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:27,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410239192] [2022-01-18 05:11:27,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:27,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:27,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:27,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:27,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:27,480 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) [2022-01-18 05:11:27,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:27,664 INFO L93 Difference]: Finished difference Result 407 states and 1110 transitions. [2022-01-18 05:11:27,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:27,664 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 [2022-01-18 05:11:27,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:27,666 INFO L225 Difference]: With dead ends: 407 [2022-01-18 05:11:27,666 INFO L226 Difference]: Without dead ends: 392 [2022-01-18 05:11:27,666 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 [2022-01-18 05:11:27,666 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 [2022-01-18 05:11:27,666 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] [2022-01-18 05:11:27,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2022-01-18 05:11:27,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 183. [2022-01-18 05:11:27,670 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) [2022-01-18 05:11:27,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 535 transitions. [2022-01-18 05:11:27,670 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 535 transitions. Word has length 17 [2022-01-18 05:11:27,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:27,670 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 535 transitions. [2022-01-18 05:11:27,670 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) [2022-01-18 05:11:27,670 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 535 transitions. [2022-01-18 05:11:27,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:27,671 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:27,671 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:27,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-01-18 05:11:27,671 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:27,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:27,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1977002145, now seen corresponding path program 24 times [2022-01-18 05:11:27,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:27,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463918260] [2022-01-18 05:11:27,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:27,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:27,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:27,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:27,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:27,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463918260] [2022-01-18 05:11:27,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463918260] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:27,743 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:27,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:27,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259695859] [2022-01-18 05:11:27,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:27,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:27,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:27,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:27,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:27,743 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) [2022-01-18 05:11:27,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:27,925 INFO L93 Difference]: Finished difference Result 384 states and 1065 transitions. [2022-01-18 05:11:27,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:27,925 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 [2022-01-18 05:11:27,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:27,926 INFO L225 Difference]: With dead ends: 384 [2022-01-18 05:11:27,926 INFO L226 Difference]: Without dead ends: 369 [2022-01-18 05:11:27,926 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 [2022-01-18 05:11:27,927 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 69 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:27,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 68 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:27,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2022-01-18 05:11:27,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 177. [2022-01-18 05:11:27,930 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) [2022-01-18 05:11:27,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 510 transitions. [2022-01-18 05:11:27,930 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 510 transitions. Word has length 17 [2022-01-18 05:11:27,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:27,930 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 510 transitions. [2022-01-18 05:11:27,931 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) [2022-01-18 05:11:27,931 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 510 transitions. [2022-01-18 05:11:27,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:27,931 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:27,931 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:27,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-01-18 05:11:27,931 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:27,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:27,932 INFO L85 PathProgramCache]: Analyzing trace with hash 812835265, now seen corresponding path program 25 times [2022-01-18 05:11:27,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:27,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552125688] [2022-01-18 05:11:27,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:27,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:27,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:27,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:27,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:27,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552125688] [2022-01-18 05:11:27,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552125688] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:27,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:27,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:27,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166123486] [2022-01-18 05:11:27,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:27,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:27,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:27,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:27,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:27,983 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) [2022-01-18 05:11:28,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:28,120 INFO L93 Difference]: Finished difference Result 403 states and 1103 transitions. [2022-01-18 05:11:28,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:28,121 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 05:11:28,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:28,122 INFO L225 Difference]: With dead ends: 403 [2022-01-18 05:11:28,122 INFO L226 Difference]: Without dead ends: 388 [2022-01-18 05:11:28,122 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 [2022-01-18 05:11:28,122 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 [2022-01-18 05:11:28,122 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] [2022-01-18 05:11:28,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2022-01-18 05:11:28,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 180. [2022-01-18 05:11:28,126 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) [2022-01-18 05:11:28,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 525 transitions. [2022-01-18 05:11:28,126 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 525 transitions. Word has length 17 [2022-01-18 05:11:28,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:28,126 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 525 transitions. [2022-01-18 05:11:28,126 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) [2022-01-18 05:11:28,126 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 525 transitions. [2022-01-18 05:11:28,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:28,127 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:28,127 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:28,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-01-18 05:11:28,127 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:28,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:28,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1497181211, now seen corresponding path program 26 times [2022-01-18 05:11:28,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:28,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280988377] [2022-01-18 05:11:28,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:28,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:28,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:28,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:28,182 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:28,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280988377] [2022-01-18 05:11:28,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280988377] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:28,182 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:28,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:28,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811176863] [2022-01-18 05:11:28,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:28,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:28,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:28,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:28,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:28,183 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) [2022-01-18 05:11:28,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:28,347 INFO L93 Difference]: Finished difference Result 401 states and 1096 transitions. [2022-01-18 05:11:28,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:28,347 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 [2022-01-18 05:11:28,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:28,348 INFO L225 Difference]: With dead ends: 401 [2022-01-18 05:11:28,348 INFO L226 Difference]: Without dead ends: 386 [2022-01-18 05:11:28,348 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 [2022-01-18 05:11:28,349 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 80 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:28,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 76 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:28,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2022-01-18 05:11:28,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 178. [2022-01-18 05:11:28,362 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) [2022-01-18 05:11:28,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 516 transitions. [2022-01-18 05:11:28,363 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 516 transitions. Word has length 17 [2022-01-18 05:11:28,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:28,363 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 516 transitions. [2022-01-18 05:11:28,363 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) [2022-01-18 05:11:28,363 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 516 transitions. [2022-01-18 05:11:28,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:28,364 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:28,364 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:28,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-01-18 05:11:28,364 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:28,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:28,364 INFO L85 PathProgramCache]: Analyzing trace with hash -375784259, now seen corresponding path program 27 times [2022-01-18 05:11:28,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:28,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348347343] [2022-01-18 05:11:28,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:28,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:28,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:28,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:28,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:28,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348347343] [2022-01-18 05:11:28,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348347343] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:28,417 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:28,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:28,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379153133] [2022-01-18 05:11:28,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:28,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:28,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:28,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:28,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:28,418 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) [2022-01-18 05:11:28,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:28,580 INFO L93 Difference]: Finished difference Result 395 states and 1075 transitions. [2022-01-18 05:11:28,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:28,580 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 [2022-01-18 05:11:28,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:28,582 INFO L225 Difference]: With dead ends: 395 [2022-01-18 05:11:28,582 INFO L226 Difference]: Without dead ends: 380 [2022-01-18 05:11:28,582 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 [2022-01-18 05:11:28,582 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 [2022-01-18 05:11:28,582 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] [2022-01-18 05:11:28,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2022-01-18 05:11:28,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 181. [2022-01-18 05:11:28,585 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) [2022-01-18 05:11:28,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 530 transitions. [2022-01-18 05:11:28,586 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 530 transitions. Word has length 17 [2022-01-18 05:11:28,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:28,586 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 530 transitions. [2022-01-18 05:11:28,586 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) [2022-01-18 05:11:28,586 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 530 transitions. [2022-01-18 05:11:28,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:28,586 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:28,586 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:28,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-01-18 05:11:28,587 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:28,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:28,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1335924927, now seen corresponding path program 28 times [2022-01-18 05:11:28,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:28,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967050598] [2022-01-18 05:11:28,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:28,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:28,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:28,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:28,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:28,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967050598] [2022-01-18 05:11:28,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967050598] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:28,647 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:28,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:28,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102269367] [2022-01-18 05:11:28,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:28,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:28,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:28,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:28,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:28,648 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) [2022-01-18 05:11:28,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:28,809 INFO L93 Difference]: Finished difference Result 379 states and 1052 transitions. [2022-01-18 05:11:28,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:28,809 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 [2022-01-18 05:11:28,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:28,811 INFO L225 Difference]: With dead ends: 379 [2022-01-18 05:11:28,811 INFO L226 Difference]: Without dead ends: 364 [2022-01-18 05:11:28,811 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 [2022-01-18 05:11:28,811 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 64 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:28,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 75 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:28,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2022-01-18 05:11:28,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 178. [2022-01-18 05:11:28,814 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) [2022-01-18 05:11:28,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 516 transitions. [2022-01-18 05:11:28,815 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 516 transitions. Word has length 17 [2022-01-18 05:11:28,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:28,815 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 516 transitions. [2022-01-18 05:11:28,815 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) [2022-01-18 05:11:28,815 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 516 transitions. [2022-01-18 05:11:28,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:28,815 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:28,815 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:28,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-01-18 05:11:28,816 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:28,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:28,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1661682081, now seen corresponding path program 29 times [2022-01-18 05:11:28,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:28,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665226744] [2022-01-18 05:11:28,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:28,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:28,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:28,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:28,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:28,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665226744] [2022-01-18 05:11:28,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665226744] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:28,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:28,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:28,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095518736] [2022-01-18 05:11:28,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:28,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:28,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:28,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:28,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:28,871 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) [2022-01-18 05:11:29,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:29,014 INFO L93 Difference]: Finished difference Result 363 states and 1003 transitions. [2022-01-18 05:11:29,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:29,014 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 [2022-01-18 05:11:29,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:29,015 INFO L225 Difference]: With dead ends: 363 [2022-01-18 05:11:29,015 INFO L226 Difference]: Without dead ends: 348 [2022-01-18 05:11:29,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:11:29,016 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 68 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:29,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 70 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:29,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2022-01-18 05:11:29,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 180. [2022-01-18 05:11:29,019 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) [2022-01-18 05:11:29,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 525 transitions. [2022-01-18 05:11:29,020 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 525 transitions. Word has length 17 [2022-01-18 05:11:29,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:29,020 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 525 transitions. [2022-01-18 05:11:29,020 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) [2022-01-18 05:11:29,020 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 525 transitions. [2022-01-18 05:11:29,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:29,021 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:29,021 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:29,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-01-18 05:11:29,021 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:29,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:29,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1286154459, now seen corresponding path program 30 times [2022-01-18 05:11:29,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:29,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993259846] [2022-01-18 05:11:29,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:29,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:29,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:29,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:29,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:29,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993259846] [2022-01-18 05:11:29,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993259846] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:29,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:29,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:29,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925873559] [2022-01-18 05:11:29,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:29,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:29,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:29,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:29,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:29,073 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) [2022-01-18 05:11:29,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:29,218 INFO L93 Difference]: Finished difference Result 342 states and 965 transitions. [2022-01-18 05:11:29,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:29,219 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 [2022-01-18 05:11:29,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:29,220 INFO L225 Difference]: With dead ends: 342 [2022-01-18 05:11:29,220 INFO L226 Difference]: Without dead ends: 327 [2022-01-18 05:11:29,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:11:29,221 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 52 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:29,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 78 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:29,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2022-01-18 05:11:29,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 177. [2022-01-18 05:11:29,223 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) [2022-01-18 05:11:29,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 510 transitions. [2022-01-18 05:11:29,224 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 510 transitions. Word has length 17 [2022-01-18 05:11:29,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:29,224 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 510 transitions. [2022-01-18 05:11:29,224 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) [2022-01-18 05:11:29,224 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 510 transitions. [2022-01-18 05:11:29,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:29,224 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:29,225 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:29,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-01-18 05:11:29,225 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:29,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:29,225 INFO L85 PathProgramCache]: Analyzing trace with hash -545211245, now seen corresponding path program 31 times [2022-01-18 05:11:29,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:29,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822749770] [2022-01-18 05:11:29,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:29,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:29,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:29,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:29,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:29,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822749770] [2022-01-18 05:11:29,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822749770] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:29,294 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:29,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:29,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550779040] [2022-01-18 05:11:29,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:29,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:29,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:29,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:29,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:29,295 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) [2022-01-18 05:11:29,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:29,485 INFO L93 Difference]: Finished difference Result 377 states and 1036 transitions. [2022-01-18 05:11:29,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:29,485 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 [2022-01-18 05:11:29,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:29,486 INFO L225 Difference]: With dead ends: 377 [2022-01-18 05:11:29,486 INFO L226 Difference]: Without dead ends: 362 [2022-01-18 05:11:29,487 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-18 05:11:29,487 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 80 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:29,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 74 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:29,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2022-01-18 05:11:29,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 186. [2022-01-18 05:11:29,490 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) [2022-01-18 05:11:29,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 546 transitions. [2022-01-18 05:11:29,490 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 546 transitions. Word has length 17 [2022-01-18 05:11:29,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:29,490 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 546 transitions. [2022-01-18 05:11:29,491 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) [2022-01-18 05:11:29,491 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 546 transitions. [2022-01-18 05:11:29,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:29,491 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:29,491 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:29,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-01-18 05:11:29,491 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:29,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:29,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1559974007, now seen corresponding path program 32 times [2022-01-18 05:11:29,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:29,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121611431] [2022-01-18 05:11:29,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:29,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:29,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:29,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:29,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:29,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121611431] [2022-01-18 05:11:29,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121611431] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:29,556 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:29,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:29,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559514481] [2022-01-18 05:11:29,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:29,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:29,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:29,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:29,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:29,556 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) [2022-01-18 05:11:29,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:29,759 INFO L93 Difference]: Finished difference Result 386 states and 1062 transitions. [2022-01-18 05:11:29,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:29,760 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 05:11:29,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:29,761 INFO L225 Difference]: With dead ends: 386 [2022-01-18 05:11:29,761 INFO L226 Difference]: Without dead ends: 371 [2022-01-18 05:11:29,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-18 05:11:29,761 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 83 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:29,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 67 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:29,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2022-01-18 05:11:29,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 189. [2022-01-18 05:11:29,764 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) [2022-01-18 05:11:29,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 560 transitions. [2022-01-18 05:11:29,765 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 560 transitions. Word has length 17 [2022-01-18 05:11:29,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:29,765 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 560 transitions. [2022-01-18 05:11:29,765 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) [2022-01-18 05:11:29,765 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 560 transitions. [2022-01-18 05:11:29,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:29,765 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:29,765 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:29,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-01-18 05:11:29,766 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:29,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:29,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1582570555, now seen corresponding path program 33 times [2022-01-18 05:11:29,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:29,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161585266] [2022-01-18 05:11:29,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:29,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:29,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:29,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:29,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:29,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161585266] [2022-01-18 05:11:29,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161585266] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:29,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:29,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:29,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316499896] [2022-01-18 05:11:29,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:29,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:29,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:29,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:29,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:29,832 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) [2022-01-18 05:11:30,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:30,007 INFO L93 Difference]: Finished difference Result 393 states and 1078 transitions. [2022-01-18 05:11:30,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:30,008 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 [2022-01-18 05:11:30,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:30,009 INFO L225 Difference]: With dead ends: 393 [2022-01-18 05:11:30,009 INFO L226 Difference]: Without dead ends: 378 [2022-01-18 05:11:30,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-18 05:11:30,009 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 [2022-01-18 05:11:30,009 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] [2022-01-18 05:11:30,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2022-01-18 05:11:30,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 181. [2022-01-18 05:11:30,012 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) [2022-01-18 05:11:30,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 528 transitions. [2022-01-18 05:11:30,013 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 528 transitions. Word has length 17 [2022-01-18 05:11:30,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:30,013 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 528 transitions. [2022-01-18 05:11:30,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:30,013 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 528 transitions. [2022-01-18 05:11:30,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:30,013 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:30,013 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:30,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-01-18 05:11:30,014 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:30,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:30,014 INFO L85 PathProgramCache]: Analyzing trace with hash 14936047, now seen corresponding path program 34 times [2022-01-18 05:11:30,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:30,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559255375] [2022-01-18 05:11:30,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:30,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:30,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:30,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:30,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:30,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559255375] [2022-01-18 05:11:30,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559255375] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:30,063 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:30,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:30,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239779156] [2022-01-18 05:11:30,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:30,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:30,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:30,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:30,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:30,064 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) [2022-01-18 05:11:30,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:30,207 INFO L93 Difference]: Finished difference Result 438 states and 1184 transitions. [2022-01-18 05:11:30,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:30,207 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 [2022-01-18 05:11:30,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:30,209 INFO L225 Difference]: With dead ends: 438 [2022-01-18 05:11:30,209 INFO L226 Difference]: Without dead ends: 423 [2022-01-18 05:11:30,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-18 05:11:30,209 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 75 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:30,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 80 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:30,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-01-18 05:11:30,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 185. [2022-01-18 05:11:30,213 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) [2022-01-18 05:11:30,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 542 transitions. [2022-01-18 05:11:30,213 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 542 transitions. Word has length 17 [2022-01-18 05:11:30,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:30,213 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 542 transitions. [2022-01-18 05:11:30,213 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) [2022-01-18 05:11:30,213 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 542 transitions. [2022-01-18 05:11:30,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:30,214 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:30,214 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:30,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-01-18 05:11:30,214 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:30,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:30,214 INFO L85 PathProgramCache]: Analyzing trace with hash -393760463, now seen corresponding path program 35 times [2022-01-18 05:11:30,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:30,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866187397] [2022-01-18 05:11:30,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:30,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:30,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:30,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:30,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:30,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866187397] [2022-01-18 05:11:30,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866187397] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:30,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:30,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:30,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306198356] [2022-01-18 05:11:30,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:30,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:30,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:30,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:30,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:30,274 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) [2022-01-18 05:11:30,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:30,420 INFO L93 Difference]: Finished difference Result 433 states and 1175 transitions. [2022-01-18 05:11:30,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:30,420 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 [2022-01-18 05:11:30,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:30,422 INFO L225 Difference]: With dead ends: 433 [2022-01-18 05:11:30,422 INFO L226 Difference]: Without dead ends: 418 [2022-01-18 05:11:30,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-18 05:11:30,422 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 82 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:30,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 70 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:30,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2022-01-18 05:11:30,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 187. [2022-01-18 05:11:30,425 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) [2022-01-18 05:11:30,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 551 transitions. [2022-01-18 05:11:30,426 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 551 transitions. Word has length 17 [2022-01-18 05:11:30,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:30,426 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 551 transitions. [2022-01-18 05:11:30,426 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) [2022-01-18 05:11:30,426 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 551 transitions. [2022-01-18 05:11:30,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:30,426 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:30,426 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:30,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-01-18 05:11:30,426 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:30,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:30,427 INFO L85 PathProgramCache]: Analyzing trace with hash 896621357, now seen corresponding path program 36 times [2022-01-18 05:11:30,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:30,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357594175] [2022-01-18 05:11:30,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:30,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:30,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:30,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:30,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:30,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357594175] [2022-01-18 05:11:30,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357594175] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:30,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:30,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:30,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266418676] [2022-01-18 05:11:30,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:30,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:30,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:30,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:30,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:30,483 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) [2022-01-18 05:11:30,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:30,621 INFO L93 Difference]: Finished difference Result 416 states and 1145 transitions. [2022-01-18 05:11:30,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:30,622 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 [2022-01-18 05:11:30,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:30,623 INFO L225 Difference]: With dead ends: 416 [2022-01-18 05:11:30,623 INFO L226 Difference]: Without dead ends: 401 [2022-01-18 05:11:30,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-18 05:11:30,623 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 67 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:30,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 71 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:30,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2022-01-18 05:11:30,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 181. [2022-01-18 05:11:30,642 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) [2022-01-18 05:11:30,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 528 transitions. [2022-01-18 05:11:30,642 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 528 transitions. Word has length 17 [2022-01-18 05:11:30,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:30,643 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 528 transitions. [2022-01-18 05:11:30,643 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) [2022-01-18 05:11:30,643 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 528 transitions. [2022-01-18 05:11:30,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:30,643 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:30,643 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:30,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-01-18 05:11:30,644 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:30,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:30,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1511154993, now seen corresponding path program 37 times [2022-01-18 05:11:30,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:30,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868881459] [2022-01-18 05:11:30,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:30,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:30,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:30,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:30,697 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:30,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868881459] [2022-01-18 05:11:30,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868881459] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:30,697 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:30,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:30,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556658449] [2022-01-18 05:11:30,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:30,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:30,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:30,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:30,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:30,698 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) [2022-01-18 05:11:30,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:30,838 INFO L93 Difference]: Finished difference Result 437 states and 1201 transitions. [2022-01-18 05:11:30,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:30,838 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 [2022-01-18 05:11:30,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:30,839 INFO L225 Difference]: With dead ends: 437 [2022-01-18 05:11:30,839 INFO L226 Difference]: Without dead ends: 422 [2022-01-18 05:11:30,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:11:30,840 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 76 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:30,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 78 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:30,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-01-18 05:11:30,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 184. [2022-01-18 05:11:30,861 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) [2022-01-18 05:11:30,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 543 transitions. [2022-01-18 05:11:30,861 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 543 transitions. Word has length 17 [2022-01-18 05:11:30,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:30,862 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 543 transitions. [2022-01-18 05:11:30,862 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) [2022-01-18 05:11:30,862 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 543 transitions. [2022-01-18 05:11:30,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:30,862 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:30,862 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:30,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-01-18 05:11:30,862 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:30,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:30,863 INFO L85 PathProgramCache]: Analyzing trace with hash -798861483, now seen corresponding path program 38 times [2022-01-18 05:11:30,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:30,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538425729] [2022-01-18 05:11:30,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:30,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:30,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:30,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:30,932 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:30,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538425729] [2022-01-18 05:11:30,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538425729] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:30,932 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:30,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:30,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958227558] [2022-01-18 05:11:30,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:30,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:30,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:30,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:30,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:30,933 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) [2022-01-18 05:11:31,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:31,075 INFO L93 Difference]: Finished difference Result 435 states and 1194 transitions. [2022-01-18 05:11:31,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:31,075 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 [2022-01-18 05:11:31,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:31,077 INFO L225 Difference]: With dead ends: 435 [2022-01-18 05:11:31,077 INFO L226 Difference]: Without dead ends: 420 [2022-01-18 05:11:31,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:11:31,077 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 83 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:31,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 70 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:31,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2022-01-18 05:11:31,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 182. [2022-01-18 05:11:31,080 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) [2022-01-18 05:11:31,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 534 transitions. [2022-01-18 05:11:31,081 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 534 transitions. Word has length 17 [2022-01-18 05:11:31,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:31,081 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 534 transitions. [2022-01-18 05:11:31,081 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) [2022-01-18 05:11:31,081 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 534 transitions. [2022-01-18 05:11:31,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:31,081 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:31,081 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:31,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-01-18 05:11:31,082 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:31,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:31,082 INFO L85 PathProgramCache]: Analyzing trace with hash 322535469, now seen corresponding path program 39 times [2022-01-18 05:11:31,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:31,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140976897] [2022-01-18 05:11:31,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:31,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:31,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:31,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:31,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:31,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140976897] [2022-01-18 05:11:31,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140976897] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:31,175 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:31,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:31,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119291922] [2022-01-18 05:11:31,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:31,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:31,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:31,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:31,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:31,175 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) [2022-01-18 05:11:31,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:31,335 INFO L93 Difference]: Finished difference Result 468 states and 1258 transitions. [2022-01-18 05:11:31,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:31,335 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 [2022-01-18 05:11:31,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:31,337 INFO L225 Difference]: With dead ends: 468 [2022-01-18 05:11:31,337 INFO L226 Difference]: Without dead ends: 453 [2022-01-18 05:11:31,337 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 [2022-01-18 05:11:31,337 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 87 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:31,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 79 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:31,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2022-01-18 05:11:31,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 185. [2022-01-18 05:11:31,340 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) [2022-01-18 05:11:31,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 548 transitions. [2022-01-18 05:11:31,341 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 548 transitions. Word has length 17 [2022-01-18 05:11:31,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:31,341 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 548 transitions. [2022-01-18 05:11:31,341 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) [2022-01-18 05:11:31,341 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 548 transitions. [2022-01-18 05:11:31,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:31,341 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:31,341 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:31,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-01-18 05:11:31,341 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:31,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:31,342 INFO L85 PathProgramCache]: Analyzing trace with hash -637605199, now seen corresponding path program 40 times [2022-01-18 05:11:31,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:31,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212367314] [2022-01-18 05:11:31,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:31,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:31,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:31,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:31,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:31,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212367314] [2022-01-18 05:11:31,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212367314] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:31,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:31,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:31,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343960195] [2022-01-18 05:11:31,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:31,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:31,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:31,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:31,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:31,396 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) [2022-01-18 05:11:31,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:31,562 INFO L93 Difference]: Finished difference Result 452 states and 1235 transitions. [2022-01-18 05:11:31,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:31,563 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 [2022-01-18 05:11:31,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:31,564 INFO L225 Difference]: With dead ends: 452 [2022-01-18 05:11:31,564 INFO L226 Difference]: Without dead ends: 437 [2022-01-18 05:11:31,564 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 [2022-01-18 05:11:31,564 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 73 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:31,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 78 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:31,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2022-01-18 05:11:31,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 182. [2022-01-18 05:11:31,568 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) [2022-01-18 05:11:31,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 534 transitions. [2022-01-18 05:11:31,568 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 534 transitions. Word has length 17 [2022-01-18 05:11:31,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:31,568 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 534 transitions. [2022-01-18 05:11:31,568 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) [2022-01-18 05:11:31,568 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 534 transitions. [2022-01-18 05:11:31,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:31,569 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:31,569 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:31,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-01-18 05:11:31,569 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:31,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:31,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1934965487, now seen corresponding path program 41 times [2022-01-18 05:11:31,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:31,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950003471] [2022-01-18 05:11:31,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:31,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:31,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:31,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:31,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:31,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950003471] [2022-01-18 05:11:31,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950003471] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:31,626 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:31,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:31,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113494611] [2022-01-18 05:11:31,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:31,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:31,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:31,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:31,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:31,627 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) [2022-01-18 05:11:31,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:31,780 INFO L93 Difference]: Finished difference Result 446 states and 1215 transitions. [2022-01-18 05:11:31,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:31,780 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 [2022-01-18 05:11:31,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:31,781 INFO L225 Difference]: With dead ends: 446 [2022-01-18 05:11:31,781 INFO L226 Difference]: Without dead ends: 431 [2022-01-18 05:11:31,781 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 [2022-01-18 05:11:31,782 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 72 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:31,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 81 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:31,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2022-01-18 05:11:31,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 184. [2022-01-18 05:11:31,785 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) [2022-01-18 05:11:31,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 543 transitions. [2022-01-18 05:11:31,786 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 543 transitions. Word has length 17 [2022-01-18 05:11:31,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:31,786 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 543 transitions. [2022-01-18 05:11:31,786 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) [2022-01-18 05:11:31,786 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 543 transitions. [2022-01-18 05:11:31,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:31,786 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:31,786 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:31,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-01-18 05:11:31,786 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:31,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:31,787 INFO L85 PathProgramCache]: Analyzing trace with hash -587834731, now seen corresponding path program 42 times [2022-01-18 05:11:31,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:31,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827480245] [2022-01-18 05:11:31,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:31,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:31,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:31,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:31,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:31,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827480245] [2022-01-18 05:11:31,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827480245] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:31,838 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:31,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:31,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460910971] [2022-01-18 05:11:31,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:31,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:31,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:31,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:31,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:31,839 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) [2022-01-18 05:11:31,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:31,991 INFO L93 Difference]: Finished difference Result 425 states and 1177 transitions. [2022-01-18 05:11:31,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:31,991 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 [2022-01-18 05:11:31,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:31,992 INFO L225 Difference]: With dead ends: 425 [2022-01-18 05:11:31,992 INFO L226 Difference]: Without dead ends: 410 [2022-01-18 05:11:31,992 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 [2022-01-18 05:11:31,993 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 [2022-01-18 05:11:31,993 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] [2022-01-18 05:11:31,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2022-01-18 05:11:31,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 179. [2022-01-18 05:11:31,996 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) [2022-01-18 05:11:31,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 518 transitions. [2022-01-18 05:11:31,996 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 518 transitions. Word has length 17 [2022-01-18 05:11:31,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:31,996 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 518 transitions. [2022-01-18 05:11:31,996 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) [2022-01-18 05:11:31,996 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 518 transitions. [2022-01-18 05:11:31,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:31,997 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:31,997 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:31,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-01-18 05:11:31,997 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:31,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:31,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1352503261, now seen corresponding path program 43 times [2022-01-18 05:11:31,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:31,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296655845] [2022-01-18 05:11:31,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:31,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:32,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:32,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:32,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:32,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296655845] [2022-01-18 05:11:32,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296655845] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:32,055 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:32,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:32,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472329482] [2022-01-18 05:11:32,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:32,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:32,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:32,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:32,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:32,055 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) [2022-01-18 05:11:32,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:32,180 INFO L93 Difference]: Finished difference Result 323 states and 889 transitions. [2022-01-18 05:11:32,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:32,180 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 [2022-01-18 05:11:32,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:32,184 INFO L225 Difference]: With dead ends: 323 [2022-01-18 05:11:32,185 INFO L226 Difference]: Without dead ends: 308 [2022-01-18 05:11:32,185 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 [2022-01-18 05:11:32,185 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 [2022-01-18 05:11:32,185 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] [2022-01-18 05:11:32,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-01-18 05:11:32,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 187. [2022-01-18 05:11:32,188 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) [2022-01-18 05:11:32,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 542 transitions. [2022-01-18 05:11:32,188 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 542 transitions. Word has length 17 [2022-01-18 05:11:32,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:32,188 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 542 transitions. [2022-01-18 05:11:32,188 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) [2022-01-18 05:11:32,188 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 542 transitions. [2022-01-18 05:11:32,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:32,189 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:32,189 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:32,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-01-18 05:11:32,189 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:32,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:32,189 INFO L85 PathProgramCache]: Analyzing trace with hash 943806751, now seen corresponding path program 44 times [2022-01-18 05:11:32,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:32,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071507963] [2022-01-18 05:11:32,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:32,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:32,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:32,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:32,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:32,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071507963] [2022-01-18 05:11:32,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071507963] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:32,243 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:32,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:32,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389400785] [2022-01-18 05:11:32,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:32,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:32,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:32,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:32,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:32,244 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) [2022-01-18 05:11:32,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:32,397 INFO L93 Difference]: Finished difference Result 353 states and 951 transitions. [2022-01-18 05:11:32,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:32,397 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 [2022-01-18 05:11:32,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:32,398 INFO L225 Difference]: With dead ends: 353 [2022-01-18 05:11:32,398 INFO L226 Difference]: Without dead ends: 338 [2022-01-18 05:11:32,398 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 [2022-01-18 05:11:32,398 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 81 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:32,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 68 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:32,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2022-01-18 05:11:32,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 189. [2022-01-18 05:11:32,401 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) [2022-01-18 05:11:32,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 551 transitions. [2022-01-18 05:11:32,401 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 551 transitions. Word has length 17 [2022-01-18 05:11:32,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:32,402 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 551 transitions. [2022-01-18 05:11:32,402 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) [2022-01-18 05:11:32,402 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 551 transitions. [2022-01-18 05:11:32,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:32,402 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:32,402 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:32,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-01-18 05:11:32,402 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:32,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:32,402 INFO L85 PathProgramCache]: Analyzing trace with hash -2060778725, now seen corresponding path program 45 times [2022-01-18 05:11:32,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:32,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741516582] [2022-01-18 05:11:32,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:32,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:32,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:32,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:32,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:32,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741516582] [2022-01-18 05:11:32,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741516582] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:32,471 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:32,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:32,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001660952] [2022-01-18 05:11:32,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:32,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:32,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:32,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:32,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:32,472 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) [2022-01-18 05:11:32,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:32,616 INFO L93 Difference]: Finished difference Result 336 states and 921 transitions. [2022-01-18 05:11:32,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:32,617 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 [2022-01-18 05:11:32,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:32,617 INFO L225 Difference]: With dead ends: 336 [2022-01-18 05:11:32,617 INFO L226 Difference]: Without dead ends: 321 [2022-01-18 05:11:32,618 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 [2022-01-18 05:11:32,618 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 66 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:32,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 69 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:32,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-01-18 05:11:32,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 183. [2022-01-18 05:11:32,621 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) [2022-01-18 05:11:32,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 528 transitions. [2022-01-18 05:11:32,621 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 528 transitions. Word has length 17 [2022-01-18 05:11:32,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:32,621 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 528 transitions. [2022-01-18 05:11:32,621 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) [2022-01-18 05:11:32,621 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 528 transitions. [2022-01-18 05:11:32,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:32,621 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:32,622 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:32,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-01-18 05:11:32,622 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:32,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:32,622 INFO L85 PathProgramCache]: Analyzing trace with hash -140211165, now seen corresponding path program 46 times [2022-01-18 05:11:32,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:32,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135788191] [2022-01-18 05:11:32,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:32,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:32,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:32,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:32,681 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:32,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135788191] [2022-01-18 05:11:32,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135788191] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:32,682 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:32,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:32,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674731217] [2022-01-18 05:11:32,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:32,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:32,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:32,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:32,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:32,682 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) [2022-01-18 05:11:32,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:32,813 INFO L93 Difference]: Finished difference Result 324 states and 889 transitions. [2022-01-18 05:11:32,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:32,814 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 [2022-01-18 05:11:32,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:32,815 INFO L225 Difference]: With dead ends: 324 [2022-01-18 05:11:32,815 INFO L226 Difference]: Without dead ends: 309 [2022-01-18 05:11:32,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2022-01-18 05:11:32,815 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 71 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2022-01-18 05:11:32,815 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] [2022-01-18 05:11:32,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2022-01-18 05:11:32,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 189. [2022-01-18 05:11:32,818 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) [2022-01-18 05:11:32,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 543 transitions. [2022-01-18 05:11:32,818 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 543 transitions. Word has length 17 [2022-01-18 05:11:32,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:32,818 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 543 transitions. [2022-01-18 05:11:32,818 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) [2022-01-18 05:11:32,818 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 543 transitions. [2022-01-18 05:11:32,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:32,819 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:32,819 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:32,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-01-18 05:11:32,819 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:32,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:32,819 INFO L85 PathProgramCache]: Analyzing trace with hash 790599975, now seen corresponding path program 47 times [2022-01-18 05:11:32,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:32,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958961817] [2022-01-18 05:11:32,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:32,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:32,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:32,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:32,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:32,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958961817] [2022-01-18 05:11:32,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958961817] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:32,895 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:32,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:32,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104546674] [2022-01-18 05:11:32,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:32,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:32,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:32,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:32,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:32,896 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) [2022-01-18 05:11:33,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:33,052 INFO L93 Difference]: Finished difference Result 354 states and 954 transitions. [2022-01-18 05:11:33,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:33,052 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 [2022-01-18 05:11:33,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:33,053 INFO L225 Difference]: With dead ends: 354 [2022-01-18 05:11:33,053 INFO L226 Difference]: Without dead ends: 339 [2022-01-18 05:11:33,053 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 [2022-01-18 05:11:33,053 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 71 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:33,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 78 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:33,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2022-01-18 05:11:33,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 191. [2022-01-18 05:11:33,056 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) [2022-01-18 05:11:33,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 552 transitions. [2022-01-18 05:11:33,057 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 552 transitions. Word has length 17 [2022-01-18 05:11:33,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:33,057 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 552 transitions. [2022-01-18 05:11:33,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:33,057 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 552 transitions. [2022-01-18 05:11:33,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:33,057 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:33,057 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:33,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-01-18 05:11:33,057 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:33,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:33,058 INFO L85 PathProgramCache]: Analyzing trace with hash 2080981795, now seen corresponding path program 48 times [2022-01-18 05:11:33,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:33,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235777804] [2022-01-18 05:11:33,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:33,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:33,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:33,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:33,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:33,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235777804] [2022-01-18 05:11:33,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235777804] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:33,107 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:33,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:33,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553631515] [2022-01-18 05:11:33,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:33,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:33,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:33,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:33,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:33,108 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) [2022-01-18 05:11:33,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:33,247 INFO L93 Difference]: Finished difference Result 333 states and 916 transitions. [2022-01-18 05:11:33,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:33,248 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 [2022-01-18 05:11:33,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:33,248 INFO L225 Difference]: With dead ends: 333 [2022-01-18 05:11:33,248 INFO L226 Difference]: Without dead ends: 318 [2022-01-18 05:11:33,248 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 [2022-01-18 05:11:33,249 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 60 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:33,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 69 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:33,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2022-01-18 05:11:33,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 189. [2022-01-18 05:11:33,251 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) [2022-01-18 05:11:33,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 543 transitions. [2022-01-18 05:11:33,252 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 543 transitions. Word has length 17 [2022-01-18 05:11:33,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:33,252 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 543 transitions. [2022-01-18 05:11:33,252 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) [2022-01-18 05:11:33,252 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 543 transitions. [2022-01-18 05:11:33,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:33,252 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:33,252 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:33,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-01-18 05:11:33,252 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:33,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:33,253 INFO L85 PathProgramCache]: Analyzing trace with hash 424957057, now seen corresponding path program 49 times [2022-01-18 05:11:33,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:33,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813084334] [2022-01-18 05:11:33,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:33,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:33,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:33,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:33,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:33,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813084334] [2022-01-18 05:11:33,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813084334] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:33,319 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:33,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:33,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311551939] [2022-01-18 05:11:33,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:33,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:33,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:33,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:33,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:33,319 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) [2022-01-18 05:11:33,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:33,481 INFO L93 Difference]: Finished difference Result 386 states and 1068 transitions. [2022-01-18 05:11:33,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:33,482 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 [2022-01-18 05:11:33,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:33,483 INFO L225 Difference]: With dead ends: 386 [2022-01-18 05:11:33,483 INFO L226 Difference]: Without dead ends: 371 [2022-01-18 05:11:33,483 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 [2022-01-18 05:11:33,483 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 78 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:33,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 68 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:33,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2022-01-18 05:11:33,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 194. [2022-01-18 05:11:33,487 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) [2022-01-18 05:11:33,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 564 transitions. [2022-01-18 05:11:33,487 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 564 transitions. Word has length 17 [2022-01-18 05:11:33,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:33,488 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 564 transitions. [2022-01-18 05:11:33,488 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) [2022-01-18 05:11:33,488 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 564 transitions. [2022-01-18 05:11:33,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:33,488 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:33,488 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:33,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-01-18 05:11:33,488 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:33,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:33,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1885059419, now seen corresponding path program 50 times [2022-01-18 05:11:33,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:33,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729551861] [2022-01-18 05:11:33,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:33,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:33,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:33,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:33,552 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:33,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729551861] [2022-01-18 05:11:33,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729551861] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:33,552 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:33,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:33,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092714401] [2022-01-18 05:11:33,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:33,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:33,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:33,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:33,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:33,553 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) [2022-01-18 05:11:33,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:33,696 INFO L93 Difference]: Finished difference Result 390 states and 1074 transitions. [2022-01-18 05:11:33,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:33,696 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 [2022-01-18 05:11:33,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:33,697 INFO L225 Difference]: With dead ends: 390 [2022-01-18 05:11:33,697 INFO L226 Difference]: Without dead ends: 375 [2022-01-18 05:11:33,697 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 [2022-01-18 05:11:33,697 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 72 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:33,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 68 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:33,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2022-01-18 05:11:33,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 192. [2022-01-18 05:11:33,701 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) [2022-01-18 05:11:33,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 555 transitions. [2022-01-18 05:11:33,702 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 555 transitions. Word has length 17 [2022-01-18 05:11:33,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:33,702 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 555 transitions. [2022-01-18 05:11:33,702 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) [2022-01-18 05:11:33,702 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 555 transitions. [2022-01-18 05:11:33,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:33,702 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:33,702 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:33,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-01-18 05:11:33,703 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:33,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:33,703 INFO L85 PathProgramCache]: Analyzing trace with hash 801592695, now seen corresponding path program 51 times [2022-01-18 05:11:33,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:33,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405796160] [2022-01-18 05:11:33,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:33,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:33,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:33,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:33,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:33,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405796160] [2022-01-18 05:11:33,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405796160] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:33,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:33,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:33,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239772111] [2022-01-18 05:11:33,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:33,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:33,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:33,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:33,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:33,775 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) [2022-01-18 05:11:33,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:33,889 INFO L93 Difference]: Finished difference Result 386 states and 1060 transitions. [2022-01-18 05:11:33,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:33,889 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 [2022-01-18 05:11:33,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:33,890 INFO L225 Difference]: With dead ends: 386 [2022-01-18 05:11:33,890 INFO L226 Difference]: Without dead ends: 371 [2022-01-18 05:11:33,890 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 [2022-01-18 05:11:33,890 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 83 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:33,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 62 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:33,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2022-01-18 05:11:33,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 192. [2022-01-18 05:11:33,894 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) [2022-01-18 05:11:33,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 555 transitions. [2022-01-18 05:11:33,895 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 555 transitions. Word has length 17 [2022-01-18 05:11:33,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:33,895 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 555 transitions. [2022-01-18 05:11:33,895 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) [2022-01-18 05:11:33,895 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 555 transitions. [2022-01-18 05:11:33,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:33,895 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:33,895 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:33,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-01-18 05:11:33,896 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:33,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:33,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1581265029, now seen corresponding path program 52 times [2022-01-18 05:11:33,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:33,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47920647] [2022-01-18 05:11:33,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:33,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:33,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:33,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:33,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:33,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47920647] [2022-01-18 05:11:33,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47920647] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:33,946 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:33,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:33,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539909580] [2022-01-18 05:11:33,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:33,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:33,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:33,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:33,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:33,947 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) [2022-01-18 05:11:34,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:34,077 INFO L93 Difference]: Finished difference Result 464 states and 1256 transitions. [2022-01-18 05:11:34,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:34,078 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 [2022-01-18 05:11:34,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:34,079 INFO L225 Difference]: With dead ends: 464 [2022-01-18 05:11:34,079 INFO L226 Difference]: Without dead ends: 449 [2022-01-18 05:11:34,079 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 [2022-01-18 05:11:34,079 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 89 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:34,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 76 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:34,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2022-01-18 05:11:34,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 195. [2022-01-18 05:11:34,083 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) [2022-01-18 05:11:34,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 570 transitions. [2022-01-18 05:11:34,084 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 570 transitions. Word has length 17 [2022-01-18 05:11:34,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:34,084 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 570 transitions. [2022-01-18 05:11:34,084 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) [2022-01-18 05:11:34,084 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 570 transitions. [2022-01-18 05:11:34,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:34,084 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:34,084 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:34,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-01-18 05:11:34,084 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:34,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:34,085 INFO L85 PathProgramCache]: Analyzing trace with hash -728751447, now seen corresponding path program 53 times [2022-01-18 05:11:34,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:34,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405238836] [2022-01-18 05:11:34,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:34,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:34,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:34,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:34,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:34,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405238836] [2022-01-18 05:11:34,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405238836] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:34,139 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:34,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:34,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446710468] [2022-01-18 05:11:34,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:34,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:34,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:34,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:34,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:34,140 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) [2022-01-18 05:11:34,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:34,293 INFO L93 Difference]: Finished difference Result 468 states and 1262 transitions. [2022-01-18 05:11:34,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:34,293 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 [2022-01-18 05:11:34,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:34,294 INFO L225 Difference]: With dead ends: 468 [2022-01-18 05:11:34,294 INFO L226 Difference]: Without dead ends: 453 [2022-01-18 05:11:34,294 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 [2022-01-18 05:11:34,294 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 86 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:34,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 78 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:34,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2022-01-18 05:11:34,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 193. [2022-01-18 05:11:34,298 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) [2022-01-18 05:11:34,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 561 transitions. [2022-01-18 05:11:34,298 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 561 transitions. Word has length 17 [2022-01-18 05:11:34,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:34,298 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 561 transitions. [2022-01-18 05:11:34,298 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) [2022-01-18 05:11:34,298 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 561 transitions. [2022-01-18 05:11:34,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:34,299 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:34,299 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:34,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-01-18 05:11:34,299 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:34,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:34,299 INFO L85 PathProgramCache]: Analyzing trace with hash 392645505, now seen corresponding path program 54 times [2022-01-18 05:11:34,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:34,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597789527] [2022-01-18 05:11:34,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:34,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:34,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:34,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:34,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:34,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597789527] [2022-01-18 05:11:34,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597789527] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:34,365 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:34,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:34,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449871436] [2022-01-18 05:11:34,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:34,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:34,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:34,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:34,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:34,365 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) [2022-01-18 05:11:34,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:34,531 INFO L93 Difference]: Finished difference Result 431 states and 1182 transitions. [2022-01-18 05:11:34,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:34,531 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 [2022-01-18 05:11:34,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:34,532 INFO L225 Difference]: With dead ends: 431 [2022-01-18 05:11:34,532 INFO L226 Difference]: Without dead ends: 416 [2022-01-18 05:11:34,532 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 [2022-01-18 05:11:34,533 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 72 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:34,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 79 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:34,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2022-01-18 05:11:34,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 196. [2022-01-18 05:11:34,536 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) [2022-01-18 05:11:34,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 575 transitions. [2022-01-18 05:11:34,536 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 575 transitions. Word has length 17 [2022-01-18 05:11:34,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:34,536 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 575 transitions. [2022-01-18 05:11:34,536 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) [2022-01-18 05:11:34,537 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 575 transitions. [2022-01-18 05:11:34,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:34,537 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:34,537 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:34,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-01-18 05:11:34,537 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:34,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:34,537 INFO L85 PathProgramCache]: Analyzing trace with hash -567495163, now seen corresponding path program 55 times [2022-01-18 05:11:34,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:34,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467775692] [2022-01-18 05:11:34,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:34,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:34,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:34,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:34,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:34,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467775692] [2022-01-18 05:11:34,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467775692] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:34,625 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:34,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:34,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779458878] [2022-01-18 05:11:34,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:34,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:34,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:34,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:34,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:34,626 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) [2022-01-18 05:11:34,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:34,801 INFO L93 Difference]: Finished difference Result 415 states and 1159 transitions. [2022-01-18 05:11:34,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:34,801 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 [2022-01-18 05:11:34,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:34,802 INFO L225 Difference]: With dead ends: 415 [2022-01-18 05:11:34,802 INFO L226 Difference]: Without dead ends: 400 [2022-01-18 05:11:34,802 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 [2022-01-18 05:11:34,802 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 63 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:34,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 74 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:34,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2022-01-18 05:11:34,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 193. [2022-01-18 05:11:34,806 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) [2022-01-18 05:11:34,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 561 transitions. [2022-01-18 05:11:34,806 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 561 transitions. Word has length 17 [2022-01-18 05:11:34,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:34,806 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 561 transitions. [2022-01-18 05:11:34,806 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) [2022-01-18 05:11:34,806 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 561 transitions. [2022-01-18 05:11:34,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:34,807 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:34,807 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:34,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-01-18 05:11:34,807 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:34,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:34,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1864855451, now seen corresponding path program 56 times [2022-01-18 05:11:34,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:34,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527810426] [2022-01-18 05:11:34,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:34,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:34,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:34,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:34,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:34,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527810426] [2022-01-18 05:11:34,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527810426] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:34,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:34,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:34,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057232168] [2022-01-18 05:11:34,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:34,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:34,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:34,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:34,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:34,887 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) [2022-01-18 05:11:35,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:35,035 INFO L93 Difference]: Finished difference Result 449 states and 1229 transitions. [2022-01-18 05:11:35,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:35,035 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 [2022-01-18 05:11:35,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:35,036 INFO L225 Difference]: With dead ends: 449 [2022-01-18 05:11:35,036 INFO L226 Difference]: Without dead ends: 434 [2022-01-18 05:11:35,036 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 [2022-01-18 05:11:35,036 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 75 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:35,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 78 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:35,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2022-01-18 05:11:35,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 195. [2022-01-18 05:11:35,040 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) [2022-01-18 05:11:35,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 570 transitions. [2022-01-18 05:11:35,040 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 570 transitions. Word has length 17 [2022-01-18 05:11:35,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:35,040 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 570 transitions. [2022-01-18 05:11:35,041 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) [2022-01-18 05:11:35,041 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 570 transitions. [2022-01-18 05:11:35,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:35,041 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:35,041 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:35,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-01-18 05:11:35,041 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:35,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:35,041 INFO L85 PathProgramCache]: Analyzing trace with hash -517724695, now seen corresponding path program 57 times [2022-01-18 05:11:35,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:35,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708190254] [2022-01-18 05:11:35,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:35,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:35,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:35,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:35,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:35,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708190254] [2022-01-18 05:11:35,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708190254] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:35,097 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:35,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:35,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946948292] [2022-01-18 05:11:35,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:35,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:35,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:35,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:35,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:35,097 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) [2022-01-18 05:11:35,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:35,243 INFO L93 Difference]: Finished difference Result 428 states and 1191 transitions. [2022-01-18 05:11:35,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:35,243 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 [2022-01-18 05:11:35,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:35,244 INFO L225 Difference]: With dead ends: 428 [2022-01-18 05:11:35,244 INFO L226 Difference]: Without dead ends: 413 [2022-01-18 05:11:35,244 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 [2022-01-18 05:11:35,245 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 62 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:35,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 80 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:35,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2022-01-18 05:11:35,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 192. [2022-01-18 05:11:35,248 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) [2022-01-18 05:11:35,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 555 transitions. [2022-01-18 05:11:35,248 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 555 transitions. Word has length 17 [2022-01-18 05:11:35,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:35,248 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 555 transitions. [2022-01-18 05:11:35,248 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) [2022-01-18 05:11:35,248 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 555 transitions. [2022-01-18 05:11:35,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:35,249 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:35,249 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:35,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-01-18 05:11:35,249 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:35,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:35,249 INFO L85 PathProgramCache]: Analyzing trace with hash -57893061, now seen corresponding path program 58 times [2022-01-18 05:11:35,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:35,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393095361] [2022-01-18 05:11:35,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:35,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:35,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:35,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:35,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:35,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393095361] [2022-01-18 05:11:35,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393095361] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:35,321 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:35,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:35,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064519292] [2022-01-18 05:11:35,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:35,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:35,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:35,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:35,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:35,322 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) [2022-01-18 05:11:35,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:35,450 INFO L93 Difference]: Finished difference Result 429 states and 1161 transitions. [2022-01-18 05:11:35,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:35,451 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 [2022-01-18 05:11:35,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:35,452 INFO L225 Difference]: With dead ends: 429 [2022-01-18 05:11:35,452 INFO L226 Difference]: Without dead ends: 414 [2022-01-18 05:11:35,452 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 [2022-01-18 05:11:35,452 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 78 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:35,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 70 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:35,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2022-01-18 05:11:35,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 194. [2022-01-18 05:11:35,455 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) [2022-01-18 05:11:35,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 562 transitions. [2022-01-18 05:11:35,456 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 562 transitions. Word has length 17 [2022-01-18 05:11:35,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:35,456 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 562 transitions. [2022-01-18 05:11:35,456 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) [2022-01-18 05:11:35,456 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 562 transitions. [2022-01-18 05:11:35,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:35,456 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:35,456 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:35,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-01-18 05:11:35,456 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:35,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:35,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1267518793, now seen corresponding path program 59 times [2022-01-18 05:11:35,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:35,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160739048] [2022-01-18 05:11:35,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:35,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:35,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:35,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:35,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:35,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160739048] [2022-01-18 05:11:35,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160739048] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:35,512 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:35,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:35,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289956495] [2022-01-18 05:11:35,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:35,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:35,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:35,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:35,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:35,513 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) [2022-01-18 05:11:35,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:35,652 INFO L93 Difference]: Finished difference Result 430 states and 1172 transitions. [2022-01-18 05:11:35,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:35,652 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 [2022-01-18 05:11:35,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:35,653 INFO L225 Difference]: With dead ends: 430 [2022-01-18 05:11:35,653 INFO L226 Difference]: Without dead ends: 415 [2022-01-18 05:11:35,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-18 05:11:35,654 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 73 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:35,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 77 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:35,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2022-01-18 05:11:35,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 196. [2022-01-18 05:11:35,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 2.928205128205128) internal successors, (571), 195 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:35,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 571 transitions. [2022-01-18 05:11:35,657 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 571 transitions. Word has length 17 [2022-01-18 05:11:35,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:35,657 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 571 transitions. [2022-01-18 05:11:35,658 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) [2022-01-18 05:11:35,658 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 571 transitions. [2022-01-18 05:11:35,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:35,658 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:35,658 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:35,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-01-18 05:11:35,658 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:35,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:35,658 INFO L85 PathProgramCache]: Analyzing trace with hash 79611963, now seen corresponding path program 60 times [2022-01-18 05:11:35,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:35,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612778314] [2022-01-18 05:11:35,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:35,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:35,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:35,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:35,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:35,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612778314] [2022-01-18 05:11:35,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612778314] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:35,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:35,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:35,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239611075] [2022-01-18 05:11:35,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:35,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:35,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:35,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:35,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:35,786 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) [2022-01-18 05:11:35,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:35,945 INFO L93 Difference]: Finished difference Result 409 states and 1134 transitions. [2022-01-18 05:11:35,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:35,945 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 [2022-01-18 05:11:35,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:35,946 INFO L225 Difference]: With dead ends: 409 [2022-01-18 05:11:35,946 INFO L226 Difference]: Without dead ends: 394 [2022-01-18 05:11:35,946 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 [2022-01-18 05:11:35,946 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 [2022-01-18 05:11:35,946 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] [2022-01-18 05:11:35,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2022-01-18 05:11:35,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 192. [2022-01-18 05:11:35,949 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) [2022-01-18 05:11:35,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 555 transitions. [2022-01-18 05:11:35,950 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 555 transitions. Word has length 17 [2022-01-18 05:11:35,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:35,950 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 555 transitions. [2022-01-18 05:11:35,950 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) [2022-01-18 05:11:35,950 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 555 transitions. [2022-01-18 05:11:35,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:35,950 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:35,950 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:35,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-01-18 05:11:35,950 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:35,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:35,951 INFO L85 PathProgramCache]: Analyzing trace with hash -914182639, now seen corresponding path program 61 times [2022-01-18 05:11:35,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:35,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048144820] [2022-01-18 05:11:35,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:35,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:35,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:36,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:36,000 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:36,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048144820] [2022-01-18 05:11:36,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048144820] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:36,000 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:36,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:36,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482029503] [2022-01-18 05:11:36,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:36,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:36,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:36,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:36,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:36,001 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) [2022-01-18 05:11:36,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:36,125 INFO L93 Difference]: Finished difference Result 328 states and 903 transitions. [2022-01-18 05:11:36,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:36,125 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 [2022-01-18 05:11:36,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:36,126 INFO L225 Difference]: With dead ends: 328 [2022-01-18 05:11:36,126 INFO L226 Difference]: Without dead ends: 313 [2022-01-18 05:11:36,126 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 [2022-01-18 05:11:36,126 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 65 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:36,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 74 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:36,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-01-18 05:11:36,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 197. [2022-01-18 05:11:36,129 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) [2022-01-18 05:11:36,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 571 transitions. [2022-01-18 05:11:36,129 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 571 transitions. Word has length 17 [2022-01-18 05:11:36,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:36,129 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 571 transitions. [2022-01-18 05:11:36,129 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) [2022-01-18 05:11:36,129 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 571 transitions. [2022-01-18 05:11:36,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:36,130 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:36,130 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:36,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-01-18 05:11:36,130 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:36,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:36,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1637182287, now seen corresponding path program 62 times [2022-01-18 05:11:36,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:36,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570446544] [2022-01-18 05:11:36,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:36,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:36,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:36,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:36,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:36,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570446544] [2022-01-18 05:11:36,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570446544] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:36,177 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:36,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:36,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172673582] [2022-01-18 05:11:36,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:36,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:36,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:36,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:36,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:36,178 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) [2022-01-18 05:11:36,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:36,322 INFO L93 Difference]: Finished difference Result 357 states and 963 transitions. [2022-01-18 05:11:36,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:36,322 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 [2022-01-18 05:11:36,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:36,323 INFO L225 Difference]: With dead ends: 357 [2022-01-18 05:11:36,323 INFO L226 Difference]: Without dead ends: 342 [2022-01-18 05:11:36,323 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 [2022-01-18 05:11:36,323 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 76 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:36,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 76 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:36,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2022-01-18 05:11:36,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 199. [2022-01-18 05:11:36,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 2.9292929292929295) internal successors, (580), 198 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:36,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 580 transitions. [2022-01-18 05:11:36,327 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 580 transitions. Word has length 17 [2022-01-18 05:11:36,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:36,327 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 580 transitions. [2022-01-18 05:11:36,327 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) [2022-01-18 05:11:36,327 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 580 transitions. [2022-01-18 05:11:36,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:36,327 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:36,327 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:36,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-01-18 05:11:36,327 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:36,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:36,328 INFO L85 PathProgramCache]: Analyzing trace with hash 347768533, now seen corresponding path program 63 times [2022-01-18 05:11:36,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:36,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050357259] [2022-01-18 05:11:36,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:36,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:36,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:36,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:36,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:36,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050357259] [2022-01-18 05:11:36,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050357259] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:36,396 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:36,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:36,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754909883] [2022-01-18 05:11:36,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:36,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:36,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:36,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:36,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:36,397 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) [2022-01-18 05:11:36,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:36,539 INFO L93 Difference]: Finished difference Result 334 states and 918 transitions. [2022-01-18 05:11:36,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:36,539 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 [2022-01-18 05:11:36,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:36,540 INFO L225 Difference]: With dead ends: 334 [2022-01-18 05:11:36,540 INFO L226 Difference]: Without dead ends: 319 [2022-01-18 05:11:36,540 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 [2022-01-18 05:11:36,540 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 68 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:36,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 65 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:36,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-01-18 05:11:36,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 195. [2022-01-18 05:11:36,543 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) [2022-01-18 05:11:36,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 564 transitions. [2022-01-18 05:11:36,543 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 564 transitions. Word has length 17 [2022-01-18 05:11:36,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:36,543 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 564 transitions. [2022-01-18 05:11:36,543 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) [2022-01-18 05:11:36,543 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 564 transitions. [2022-01-18 05:11:36,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:36,544 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:36,544 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:36,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-01-18 05:11:36,544 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:36,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:36,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1049436965, now seen corresponding path program 64 times [2022-01-18 05:11:36,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:36,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966289285] [2022-01-18 05:11:36,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:36,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:36,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:36,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:36,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:36,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966289285] [2022-01-18 05:11:36,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966289285] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:36,594 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:36,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:36,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614472394] [2022-01-18 05:11:36,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:36,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:36,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:36,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:36,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:36,595 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) [2022-01-18 05:11:36,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:36,742 INFO L93 Difference]: Finished difference Result 349 states and 945 transitions. [2022-01-18 05:11:36,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:36,742 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 [2022-01-18 05:11:36,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:36,743 INFO L225 Difference]: With dead ends: 349 [2022-01-18 05:11:36,743 INFO L226 Difference]: Without dead ends: 334 [2022-01-18 05:11:36,743 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 [2022-01-18 05:11:36,743 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 [2022-01-18 05:11:36,744 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] [2022-01-18 05:11:36,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2022-01-18 05:11:36,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 199. [2022-01-18 05:11:36,747 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) [2022-01-18 05:11:36,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 580 transitions. [2022-01-18 05:11:36,747 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 580 transitions. Word has length 17 [2022-01-18 05:11:36,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:36,747 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 580 transitions. [2022-01-18 05:11:36,747 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) [2022-01-18 05:11:36,747 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 580 transitions. [2022-01-18 05:11:36,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:36,747 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:36,747 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:36,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-01-18 05:11:36,748 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:36,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:36,748 INFO L85 PathProgramCache]: Analyzing trace with hash 935513855, now seen corresponding path program 65 times [2022-01-18 05:11:36,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:36,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038426083] [2022-01-18 05:11:36,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:36,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:36,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:36,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:36,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:36,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038426083] [2022-01-18 05:11:36,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038426083] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:36,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:36,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:36,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68286709] [2022-01-18 05:11:36,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:36,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:36,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:36,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:36,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:36,804 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) [2022-01-18 05:11:36,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:36,952 INFO L93 Difference]: Finished difference Result 353 states and 951 transitions. [2022-01-18 05:11:36,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:36,952 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 [2022-01-18 05:11:36,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:36,953 INFO L225 Difference]: With dead ends: 353 [2022-01-18 05:11:36,953 INFO L226 Difference]: Without dead ends: 338 [2022-01-18 05:11:36,953 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 [2022-01-18 05:11:36,953 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 74 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:36,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 70 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:36,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2022-01-18 05:11:36,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 197. [2022-01-18 05:11:36,956 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) [2022-01-18 05:11:36,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 571 transitions. [2022-01-18 05:11:36,957 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 571 transitions. Word has length 17 [2022-01-18 05:11:36,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:36,957 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 571 transitions. [2022-01-18 05:11:36,957 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) [2022-01-18 05:11:36,957 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 571 transitions. [2022-01-18 05:11:36,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:36,957 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:36,957 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:36,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-01-18 05:11:36,957 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:36,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:36,957 INFO L85 PathProgramCache]: Analyzing trace with hash -672801327, now seen corresponding path program 66 times [2022-01-18 05:11:36,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:36,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140134840] [2022-01-18 05:11:36,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:36,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:36,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:37,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:37,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:37,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140134840] [2022-01-18 05:11:37,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140134840] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:37,013 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:37,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:37,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199515988] [2022-01-18 05:11:37,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:37,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:37,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:37,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:37,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:37,013 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) [2022-01-18 05:11:37,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:37,137 INFO L93 Difference]: Finished difference Result 324 states and 891 transitions. [2022-01-18 05:11:37,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:37,137 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 [2022-01-18 05:11:37,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:37,138 INFO L225 Difference]: With dead ends: 324 [2022-01-18 05:11:37,138 INFO L226 Difference]: Without dead ends: 309 [2022-01-18 05:11:37,138 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 [2022-01-18 05:11:37,138 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 [2022-01-18 05:11:37,138 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] [2022-01-18 05:11:37,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2022-01-18 05:11:37,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 195. [2022-01-18 05:11:37,141 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) [2022-01-18 05:11:37,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 564 transitions. [2022-01-18 05:11:37,141 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 564 transitions. Word has length 17 [2022-01-18 05:11:37,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:37,141 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 564 transitions. [2022-01-18 05:11:37,141 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) [2022-01-18 05:11:37,141 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 564 transitions. [2022-01-18 05:11:37,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:37,142 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:37,142 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:37,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-01-18 05:11:37,142 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:37,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:37,142 INFO L85 PathProgramCache]: Analyzing trace with hash 571626125, now seen corresponding path program 67 times [2022-01-18 05:11:37,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:37,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456646951] [2022-01-18 05:11:37,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:37,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:37,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:37,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:37,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:37,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456646951] [2022-01-18 05:11:37,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456646951] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:37,195 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:37,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:37,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462418969] [2022-01-18 05:11:37,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:37,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:37,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:37,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:37,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:37,195 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) [2022-01-18 05:11:37,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:37,328 INFO L93 Difference]: Finished difference Result 442 states and 1201 transitions. [2022-01-18 05:11:37,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:37,328 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 05:11:37,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:37,329 INFO L225 Difference]: With dead ends: 442 [2022-01-18 05:11:37,329 INFO L226 Difference]: Without dead ends: 427 [2022-01-18 05:11:37,329 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 [2022-01-18 05:11:37,329 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 83 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:37,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 79 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:37,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2022-01-18 05:11:37,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 198. [2022-01-18 05:11:37,332 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) [2022-01-18 05:11:37,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 576 transitions. [2022-01-18 05:11:37,333 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 576 transitions. Word has length 17 [2022-01-18 05:11:37,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:37,333 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 576 transitions. [2022-01-18 05:11:37,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:37,333 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 576 transitions. [2022-01-18 05:11:37,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:37,333 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:37,333 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:37,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-01-18 05:11:37,333 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:37,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:37,334 INFO L85 PathProgramCache]: Analyzing trace with hash -151373523, now seen corresponding path program 68 times [2022-01-18 05:11:37,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:37,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596701134] [2022-01-18 05:11:37,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:37,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:37,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:37,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:37,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:37,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596701134] [2022-01-18 05:11:37,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596701134] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:37,400 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:37,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:37,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065931637] [2022-01-18 05:11:37,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:37,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:37,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:37,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:37,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:37,401 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) [2022-01-18 05:11:37,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:37,543 INFO L93 Difference]: Finished difference Result 465 states and 1248 transitions. [2022-01-18 05:11:37,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:37,544 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 [2022-01-18 05:11:37,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:37,545 INFO L225 Difference]: With dead ends: 465 [2022-01-18 05:11:37,545 INFO L226 Difference]: Without dead ends: 450 [2022-01-18 05:11:37,545 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 [2022-01-18 05:11:37,545 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 88 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:37,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 80 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:37,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-01-18 05:11:37,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 200. [2022-01-18 05:11:37,549 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) [2022-01-18 05:11:37,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 585 transitions. [2022-01-18 05:11:37,549 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 585 transitions. Word has length 17 [2022-01-18 05:11:37,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:37,549 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 585 transitions. [2022-01-18 05:11:37,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:37,549 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 585 transitions. [2022-01-18 05:11:37,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:37,550 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:37,550 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:37,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-01-18 05:11:37,550 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:37,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:37,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1833577297, now seen corresponding path program 69 times [2022-01-18 05:11:37,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:37,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171556388] [2022-01-18 05:11:37,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:37,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:37,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:37,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:37,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:37,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171556388] [2022-01-18 05:11:37,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171556388] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:37,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:37,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:37,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927324513] [2022-01-18 05:11:37,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:37,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:37,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:37,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:37,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:37,609 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) [2022-01-18 05:11:37,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:37,763 INFO L93 Difference]: Finished difference Result 442 states and 1203 transitions. [2022-01-18 05:11:37,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:37,763 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 [2022-01-18 05:11:37,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:37,764 INFO L225 Difference]: With dead ends: 442 [2022-01-18 05:11:37,764 INFO L226 Difference]: Without dead ends: 427 [2022-01-18 05:11:37,764 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 [2022-01-18 05:11:37,764 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 [2022-01-18 05:11:37,764 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] [2022-01-18 05:11:37,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2022-01-18 05:11:37,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 196. [2022-01-18 05:11:37,768 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) [2022-01-18 05:11:37,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 569 transitions. [2022-01-18 05:11:37,768 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 569 transitions. Word has length 17 [2022-01-18 05:11:37,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:37,768 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 569 transitions. [2022-01-18 05:11:37,768 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) [2022-01-18 05:11:37,768 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 569 transitions. [2022-01-18 05:11:37,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:37,769 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:37,769 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:37,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2022-01-18 05:11:37,769 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:37,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:37,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1915840751, now seen corresponding path program 70 times [2022-01-18 05:11:37,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:37,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556541903] [2022-01-18 05:11:37,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:37,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:37,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:37,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:37,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:37,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556541903] [2022-01-18 05:11:37,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556541903] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:37,840 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:37,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:37,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743123344] [2022-01-18 05:11:37,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:37,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:37,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:37,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:37,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:37,840 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) [2022-01-18 05:11:38,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:38,016 INFO L93 Difference]: Finished difference Result 393 states and 1085 transitions. [2022-01-18 05:11:38,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:38,016 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 [2022-01-18 05:11:38,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:38,017 INFO L225 Difference]: With dead ends: 393 [2022-01-18 05:11:38,017 INFO L226 Difference]: Without dead ends: 378 [2022-01-18 05:11:38,017 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 [2022-01-18 05:11:38,017 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 77 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:38,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 68 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:38,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2022-01-18 05:11:38,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 199. [2022-01-18 05:11:38,020 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) [2022-01-18 05:11:38,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 580 transitions. [2022-01-18 05:11:38,021 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 580 transitions. Word has length 17 [2022-01-18 05:11:38,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:38,021 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 580 transitions. [2022-01-18 05:11:38,022 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) [2022-01-18 05:11:38,022 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 580 transitions. [2022-01-18 05:11:38,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:38,022 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:38,023 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:38,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-01-18 05:11:38,023 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:38,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:38,023 INFO L85 PathProgramCache]: Analyzing trace with hash -520481395, now seen corresponding path program 71 times [2022-01-18 05:11:38,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:38,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893688554] [2022-01-18 05:11:38,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:38,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:38,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:38,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:38,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:38,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893688554] [2022-01-18 05:11:38,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893688554] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:38,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:38,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:38,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964497779] [2022-01-18 05:11:38,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:38,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:38,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:38,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:38,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:38,091 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) [2022-01-18 05:11:38,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:38,285 INFO L93 Difference]: Finished difference Result 391 states and 1089 transitions. [2022-01-18 05:11:38,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:38,285 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 [2022-01-18 05:11:38,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:38,286 INFO L225 Difference]: With dead ends: 391 [2022-01-18 05:11:38,286 INFO L226 Difference]: Without dead ends: 376 [2022-01-18 05:11:38,286 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 [2022-01-18 05:11:38,286 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 71 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:38,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 77 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:38,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2022-01-18 05:11:38,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 202. [2022-01-18 05:11:38,290 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) [2022-01-18 05:11:38,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 594 transitions. [2022-01-18 05:11:38,290 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 594 transitions. Word has length 17 [2022-01-18 05:11:38,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:38,290 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 594 transitions. [2022-01-18 05:11:38,290 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) [2022-01-18 05:11:38,290 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 594 transitions. [2022-01-18 05:11:38,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:38,291 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:38,291 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:38,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-01-18 05:11:38,291 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:38,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:38,291 INFO L85 PathProgramCache]: Analyzing trace with hash -497884847, now seen corresponding path program 72 times [2022-01-18 05:11:38,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:38,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924383925] [2022-01-18 05:11:38,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:38,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:38,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:38,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:38,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:38,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924383925] [2022-01-18 05:11:38,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924383925] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:38,361 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:38,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:38,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686778690] [2022-01-18 05:11:38,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:38,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:38,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:38,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:38,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:38,361 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) [2022-01-18 05:11:38,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:38,530 INFO L93 Difference]: Finished difference Result 368 states and 1044 transitions. [2022-01-18 05:11:38,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:38,530 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 [2022-01-18 05:11:38,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:38,530 INFO L225 Difference]: With dead ends: 368 [2022-01-18 05:11:38,531 INFO L226 Difference]: Without dead ends: 353 [2022-01-18 05:11:38,531 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 [2022-01-18 05:11:38,531 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 61 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:38,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 69 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:38,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2022-01-18 05:11:38,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 196. [2022-01-18 05:11:38,534 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) [2022-01-18 05:11:38,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 569 transitions. [2022-01-18 05:11:38,534 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 569 transitions. Word has length 17 [2022-01-18 05:11:38,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:38,534 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 569 transitions. [2022-01-18 05:11:38,534 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) [2022-01-18 05:11:38,534 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 569 transitions. [2022-01-18 05:11:38,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:38,535 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:38,535 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:38,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-01-18 05:11:38,535 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:38,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:38,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1662051727, now seen corresponding path program 73 times [2022-01-18 05:11:38,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:38,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438886291] [2022-01-18 05:11:38,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:38,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:38,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:38,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:38,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:38,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438886291] [2022-01-18 05:11:38,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438886291] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:38,590 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:38,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:38,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216890947] [2022-01-18 05:11:38,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:38,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:38,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:38,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:38,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:38,591 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) [2022-01-18 05:11:38,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:38,728 INFO L93 Difference]: Finished difference Result 445 states and 1229 transitions. [2022-01-18 05:11:38,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:38,728 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 [2022-01-18 05:11:38,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:38,729 INFO L225 Difference]: With dead ends: 445 [2022-01-18 05:11:38,729 INFO L226 Difference]: Without dead ends: 430 [2022-01-18 05:11:38,729 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 [2022-01-18 05:11:38,730 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 74 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:38,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 85 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:38,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2022-01-18 05:11:38,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 199. [2022-01-18 05:11:38,733 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) [2022-01-18 05:11:38,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 584 transitions. [2022-01-18 05:11:38,733 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 584 transitions. Word has length 17 [2022-01-18 05:11:38,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:38,733 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 584 transitions. [2022-01-18 05:11:38,733 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) [2022-01-18 05:11:38,734 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 584 transitions. [2022-01-18 05:11:38,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:38,734 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:38,734 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:38,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-01-18 05:11:38,734 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:38,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:38,734 INFO L85 PathProgramCache]: Analyzing trace with hash 322899093, now seen corresponding path program 74 times [2022-01-18 05:11:38,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:38,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153317020] [2022-01-18 05:11:38,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:38,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:38,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:38,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:38,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:38,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153317020] [2022-01-18 05:11:38,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153317020] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:38,801 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:38,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:38,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352946308] [2022-01-18 05:11:38,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:38,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:38,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:38,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:38,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:38,802 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) [2022-01-18 05:11:38,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:38,949 INFO L93 Difference]: Finished difference Result 443 states and 1222 transitions. [2022-01-18 05:11:38,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:38,949 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 [2022-01-18 05:11:38,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:38,950 INFO L225 Difference]: With dead ends: 443 [2022-01-18 05:11:38,950 INFO L226 Difference]: Without dead ends: 428 [2022-01-18 05:11:38,950 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 [2022-01-18 05:11:38,950 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 73 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:38,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 87 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:38,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2022-01-18 05:11:38,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 197. [2022-01-18 05:11:38,954 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) [2022-01-18 05:11:38,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 575 transitions. [2022-01-18 05:11:38,954 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 575 transitions. Word has length 17 [2022-01-18 05:11:38,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:38,954 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 575 transitions. [2022-01-18 05:11:38,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:38,954 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 575 transitions. [2022-01-18 05:11:38,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:38,955 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:38,955 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:38,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2022-01-18 05:11:38,955 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:38,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:38,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1444296045, now seen corresponding path program 75 times [2022-01-18 05:11:38,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:38,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797825478] [2022-01-18 05:11:38,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:38,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:38,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:39,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:39,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:39,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797825478] [2022-01-18 05:11:39,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797825478] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:39,015 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:39,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:39,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86454144] [2022-01-18 05:11:39,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:39,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:39,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:39,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:39,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:39,016 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) [2022-01-18 05:11:39,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:39,171 INFO L93 Difference]: Finished difference Result 437 states and 1201 transitions. [2022-01-18 05:11:39,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:39,172 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 [2022-01-18 05:11:39,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:39,172 INFO L225 Difference]: With dead ends: 437 [2022-01-18 05:11:39,172 INFO L226 Difference]: Without dead ends: 422 [2022-01-18 05:11:39,172 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 [2022-01-18 05:11:39,173 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 79 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:39,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 83 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:39,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-01-18 05:11:39,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 200. [2022-01-18 05:11:39,176 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) [2022-01-18 05:11:39,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 589 transitions. [2022-01-18 05:11:39,176 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 589 transitions. Word has length 17 [2022-01-18 05:11:39,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:39,176 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 589 transitions. [2022-01-18 05:11:39,176 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) [2022-01-18 05:11:39,177 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 589 transitions. [2022-01-18 05:11:39,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:39,177 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:39,177 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:39,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-01-18 05:11:39,177 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:39,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:39,177 INFO L85 PathProgramCache]: Analyzing trace with hash 484155377, now seen corresponding path program 76 times [2022-01-18 05:11:39,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:39,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442370293] [2022-01-18 05:11:39,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:39,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:39,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:39,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:39,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:39,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442370293] [2022-01-18 05:11:39,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442370293] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:39,247 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:39,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:39,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091221695] [2022-01-18 05:11:39,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:39,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:39,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:39,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:39,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:39,248 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) [2022-01-18 05:11:39,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:39,416 INFO L93 Difference]: Finished difference Result 421 states and 1178 transitions. [2022-01-18 05:11:39,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:39,417 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 [2022-01-18 05:11:39,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:39,417 INFO L225 Difference]: With dead ends: 421 [2022-01-18 05:11:39,417 INFO L226 Difference]: Without dead ends: 406 [2022-01-18 05:11:39,417 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 [2022-01-18 05:11:39,418 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 67 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:39,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 80 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:39,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2022-01-18 05:11:39,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 197. [2022-01-18 05:11:39,421 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) [2022-01-18 05:11:39,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 575 transitions. [2022-01-18 05:11:39,421 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 575 transitions. Word has length 17 [2022-01-18 05:11:39,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:39,421 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 575 transitions. [2022-01-18 05:11:39,421 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) [2022-01-18 05:11:39,421 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 575 transitions. [2022-01-18 05:11:39,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:39,422 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:39,422 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:39,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-01-18 05:11:39,422 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:39,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:39,422 INFO L85 PathProgramCache]: Analyzing trace with hash -813204911, now seen corresponding path program 77 times [2022-01-18 05:11:39,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:39,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870302428] [2022-01-18 05:11:39,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:39,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:39,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:39,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:39,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:39,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870302428] [2022-01-18 05:11:39,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870302428] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:39,472 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:39,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:39,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606286697] [2022-01-18 05:11:39,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:39,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:39,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:39,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:39,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:39,473 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) [2022-01-18 05:11:39,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:39,604 INFO L93 Difference]: Finished difference Result 405 states and 1129 transitions. [2022-01-18 05:11:39,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:39,604 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 [2022-01-18 05:11:39,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:39,605 INFO L225 Difference]: With dead ends: 405 [2022-01-18 05:11:39,605 INFO L226 Difference]: Without dead ends: 390 [2022-01-18 05:11:39,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:11:39,605 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 71 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:39,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 74 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:39,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2022-01-18 05:11:39,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 199. [2022-01-18 05:11:39,608 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) [2022-01-18 05:11:39,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 584 transitions. [2022-01-18 05:11:39,609 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 584 transitions. Word has length 17 [2022-01-18 05:11:39,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:39,609 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 584 transitions. [2022-01-18 05:11:39,609 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) [2022-01-18 05:11:39,609 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 584 transitions. [2022-01-18 05:11:39,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:39,609 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:39,609 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:39,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-01-18 05:11:39,609 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:39,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:39,610 INFO L85 PathProgramCache]: Analyzing trace with hash 533925845, now seen corresponding path program 78 times [2022-01-18 05:11:39,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:39,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193736304] [2022-01-18 05:11:39,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:39,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:39,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:39,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:39,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:39,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193736304] [2022-01-18 05:11:39,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193736304] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:39,662 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:39,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:39,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877707775] [2022-01-18 05:11:39,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:39,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:39,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:39,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:39,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:39,662 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) [2022-01-18 05:11:39,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:39,795 INFO L93 Difference]: Finished difference Result 384 states and 1091 transitions. [2022-01-18 05:11:39,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:39,795 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 [2022-01-18 05:11:39,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:39,796 INFO L225 Difference]: With dead ends: 384 [2022-01-18 05:11:39,796 INFO L226 Difference]: Without dead ends: 369 [2022-01-18 05:11:39,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:11:39,796 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 52 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:39,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 80 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:39,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2022-01-18 05:11:39,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 195. [2022-01-18 05:11:39,799 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) [2022-01-18 05:11:39,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 564 transitions. [2022-01-18 05:11:39,800 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 564 transitions. Word has length 17 [2022-01-18 05:11:39,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:39,800 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 564 transitions. [2022-01-18 05:11:39,800 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) [2022-01-18 05:11:39,800 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 564 transitions. [2022-01-18 05:11:39,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:39,800 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:39,800 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:39,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-01-18 05:11:39,800 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:39,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:39,801 INFO L85 PathProgramCache]: Analyzing trace with hash -635821033, now seen corresponding path program 79 times [2022-01-18 05:11:39,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:39,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99011699] [2022-01-18 05:11:39,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:39,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:39,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:39,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:39,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:39,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99011699] [2022-01-18 05:11:39,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99011699] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:39,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:39,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:39,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761875368] [2022-01-18 05:11:39,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:39,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:39,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:39,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:39,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:39,857 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) [2022-01-18 05:11:40,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:40,002 INFO L93 Difference]: Finished difference Result 425 states and 1163 transitions. [2022-01-18 05:11:40,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:40,002 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 05:11:40,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:40,003 INFO L225 Difference]: With dead ends: 425 [2022-01-18 05:11:40,003 INFO L226 Difference]: Without dead ends: 410 [2022-01-18 05:11:40,003 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 [2022-01-18 05:11:40,004 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 78 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:40,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 83 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:40,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2022-01-18 05:11:40,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 200. [2022-01-18 05:11:40,007 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) [2022-01-18 05:11:40,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 585 transitions. [2022-01-18 05:11:40,007 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 585 transitions. Word has length 17 [2022-01-18 05:11:40,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:40,007 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 585 transitions. [2022-01-18 05:11:40,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:40,007 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 585 transitions. [2022-01-18 05:11:40,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:40,008 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:40,008 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:40,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-01-18 05:11:40,008 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:40,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:40,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1349129787, now seen corresponding path program 80 times [2022-01-18 05:11:40,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:40,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037483188] [2022-01-18 05:11:40,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:40,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:40,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:40,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:40,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:40,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037483188] [2022-01-18 05:11:40,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037483188] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:40,064 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:40,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:40,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629765579] [2022-01-18 05:11:40,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:40,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:40,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:40,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:40,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:40,065 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) [2022-01-18 05:11:40,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:40,220 INFO L93 Difference]: Finished difference Result 429 states and 1169 transitions. [2022-01-18 05:11:40,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:40,221 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 [2022-01-18 05:11:40,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:40,221 INFO L225 Difference]: With dead ends: 429 [2022-01-18 05:11:40,222 INFO L226 Difference]: Without dead ends: 414 [2022-01-18 05:11:40,222 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 [2022-01-18 05:11:40,222 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 67 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:40,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 87 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:40,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2022-01-18 05:11:40,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 198. [2022-01-18 05:11:40,225 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) [2022-01-18 05:11:40,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 576 transitions. [2022-01-18 05:11:40,225 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 576 transitions. Word has length 17 [2022-01-18 05:11:40,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:40,225 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 576 transitions. [2022-01-18 05:11:40,225 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) [2022-01-18 05:11:40,226 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 576 transitions. [2022-01-18 05:11:40,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:40,226 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:40,226 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:40,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2022-01-18 05:11:40,226 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:40,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:40,226 INFO L85 PathProgramCache]: Analyzing trace with hash -259185395, now seen corresponding path program 81 times [2022-01-18 05:11:40,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:40,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887138170] [2022-01-18 05:11:40,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:40,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:40,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:40,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:40,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:40,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887138170] [2022-01-18 05:11:40,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887138170] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:40,299 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:40,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:40,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780379598] [2022-01-18 05:11:40,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:40,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:40,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:40,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:40,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:40,302 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) [2022-01-18 05:11:40,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:40,447 INFO L93 Difference]: Finished difference Result 429 states and 1163 transitions. [2022-01-18 05:11:40,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:40,447 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 [2022-01-18 05:11:40,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:40,448 INFO L225 Difference]: With dead ends: 429 [2022-01-18 05:11:40,448 INFO L226 Difference]: Without dead ends: 414 [2022-01-18 05:11:40,448 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 [2022-01-18 05:11:40,448 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 72 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:40,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 85 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:40,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2022-01-18 05:11:40,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 196. [2022-01-18 05:11:40,452 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) [2022-01-18 05:11:40,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 569 transitions. [2022-01-18 05:11:40,452 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 569 transitions. Word has length 17 [2022-01-18 05:11:40,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:40,452 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 569 transitions. [2022-01-18 05:11:40,452 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) [2022-01-18 05:11:40,452 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 569 transitions. [2022-01-18 05:11:40,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:40,452 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:40,453 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:40,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2022-01-18 05:11:40,453 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:40,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:40,453 INFO L85 PathProgramCache]: Analyzing trace with hash 520486939, now seen corresponding path program 82 times [2022-01-18 05:11:40,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:40,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66647936] [2022-01-18 05:11:40,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:40,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:40,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:40,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:40,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:40,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66647936] [2022-01-18 05:11:40,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66647936] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:40,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:40,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:40,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918720085] [2022-01-18 05:11:40,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:40,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:40,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:40,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:40,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:40,509 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) [2022-01-18 05:11:40,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:40,650 INFO L93 Difference]: Finished difference Result 451 states and 1224 transitions. [2022-01-18 05:11:40,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:40,650 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 [2022-01-18 05:11:40,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:40,651 INFO L225 Difference]: With dead ends: 451 [2022-01-18 05:11:40,651 INFO L226 Difference]: Without dead ends: 436 [2022-01-18 05:11:40,651 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 [2022-01-18 05:11:40,651 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 [2022-01-18 05:11:40,651 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] [2022-01-18 05:11:40,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2022-01-18 05:11:40,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 199. [2022-01-18 05:11:40,655 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) [2022-01-18 05:11:40,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 584 transitions. [2022-01-18 05:11:40,655 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 584 transitions. Word has length 17 [2022-01-18 05:11:40,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:40,655 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 584 transitions. [2022-01-18 05:11:40,655 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) [2022-01-18 05:11:40,655 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 584 transitions. [2022-01-18 05:11:40,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:40,656 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:40,656 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:40,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-01-18 05:11:40,656 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:40,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:40,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1789529537, now seen corresponding path program 83 times [2022-01-18 05:11:40,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:40,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706762275] [2022-01-18 05:11:40,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:40,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:40,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:40,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:40,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:40,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706762275] [2022-01-18 05:11:40,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706762275] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:40,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:40,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:40,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279415040] [2022-01-18 05:11:40,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:40,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:40,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:40,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:40,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:40,715 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) [2022-01-18 05:11:40,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:40,863 INFO L93 Difference]: Finished difference Result 455 states and 1230 transitions. [2022-01-18 05:11:40,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:40,863 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 [2022-01-18 05:11:40,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:40,864 INFO L225 Difference]: With dead ends: 455 [2022-01-18 05:11:40,864 INFO L226 Difference]: Without dead ends: 440 [2022-01-18 05:11:40,864 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 [2022-01-18 05:11:40,864 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 76 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:40,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 91 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:40,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2022-01-18 05:11:40,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 197. [2022-01-18 05:11:40,868 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) [2022-01-18 05:11:40,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 575 transitions. [2022-01-18 05:11:40,868 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 575 transitions. Word has length 17 [2022-01-18 05:11:40,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:40,868 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 575 transitions. [2022-01-18 05:11:40,868 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) [2022-01-18 05:11:40,868 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 575 transitions. [2022-01-18 05:11:40,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:40,868 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:40,869 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:40,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-01-18 05:11:40,869 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:40,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:40,869 INFO L85 PathProgramCache]: Analyzing trace with hash -668132585, now seen corresponding path program 84 times [2022-01-18 05:11:40,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:40,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044442232] [2022-01-18 05:11:40,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:40,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:40,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:40,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:40,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:40,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044442232] [2022-01-18 05:11:40,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044442232] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:40,925 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:40,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:40,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637006368] [2022-01-18 05:11:40,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:40,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:40,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:40,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:40,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:40,926 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) [2022-01-18 05:11:41,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:41,094 INFO L93 Difference]: Finished difference Result 422 states and 1158 transitions. [2022-01-18 05:11:41,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:41,095 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 [2022-01-18 05:11:41,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:41,095 INFO L225 Difference]: With dead ends: 422 [2022-01-18 05:11:41,095 INFO L226 Difference]: Without dead ends: 407 [2022-01-18 05:11:41,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:11:41,096 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 69 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:41,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 87 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:41,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2022-01-18 05:11:41,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 200. [2022-01-18 05:11:41,098 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) [2022-01-18 05:11:41,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 589 transitions. [2022-01-18 05:11:41,099 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 589 transitions. Word has length 17 [2022-01-18 05:11:41,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:41,099 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 589 transitions. [2022-01-18 05:11:41,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:41,099 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 589 transitions. [2022-01-18 05:11:41,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:41,099 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:41,099 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:41,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2022-01-18 05:11:41,100 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:41,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:41,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1628273253, now seen corresponding path program 85 times [2022-01-18 05:11:41,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:41,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565325637] [2022-01-18 05:11:41,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:41,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:41,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:41,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:41,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:41,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565325637] [2022-01-18 05:11:41,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565325637] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:41,153 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:41,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:41,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403700636] [2022-01-18 05:11:41,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:41,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:41,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:41,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:41,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:41,154 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) [2022-01-18 05:11:41,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:41,328 INFO L93 Difference]: Finished difference Result 406 states and 1135 transitions. [2022-01-18 05:11:41,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:41,329 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 [2022-01-18 05:11:41,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:41,329 INFO L225 Difference]: With dead ends: 406 [2022-01-18 05:11:41,329 INFO L226 Difference]: Without dead ends: 391 [2022-01-18 05:11:41,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:11:41,330 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 61 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:41,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 88 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:41,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2022-01-18 05:11:41,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 197. [2022-01-18 05:11:41,332 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) [2022-01-18 05:11:41,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 575 transitions. [2022-01-18 05:11:41,333 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 575 transitions. Word has length 17 [2022-01-18 05:11:41,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:41,333 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 575 transitions. [2022-01-18 05:11:41,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:41,333 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 575 transitions. [2022-01-18 05:11:41,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:41,333 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:41,333 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:41,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2022-01-18 05:11:41,334 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:41,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:41,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1369333755, now seen corresponding path program 86 times [2022-01-18 05:11:41,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:41,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229373029] [2022-01-18 05:11:41,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:41,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:41,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:41,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:41,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:41,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229373029] [2022-01-18 05:11:41,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229373029] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:41,406 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:41,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:41,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966555273] [2022-01-18 05:11:41,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:41,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:41,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:41,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:41,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:41,407 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) [2022-01-18 05:11:41,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:41,556 INFO L93 Difference]: Finished difference Result 440 states and 1205 transitions. [2022-01-18 05:11:41,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:41,556 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 [2022-01-18 05:11:41,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:41,557 INFO L225 Difference]: With dead ends: 440 [2022-01-18 05:11:41,557 INFO L226 Difference]: Without dead ends: 425 [2022-01-18 05:11:41,557 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 [2022-01-18 05:11:41,557 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 69 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:41,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 90 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:41,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2022-01-18 05:11:41,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 199. [2022-01-18 05:11:41,560 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) [2022-01-18 05:11:41,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 584 transitions. [2022-01-18 05:11:41,561 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 584 transitions. Word has length 17 [2022-01-18 05:11:41,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:41,561 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 584 transitions. [2022-01-18 05:11:41,561 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) [2022-01-18 05:11:41,561 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 584 transitions. [2022-01-18 05:11:41,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:41,561 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:41,561 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:41,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2022-01-18 05:11:41,561 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:41,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:41,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1578502785, now seen corresponding path program 87 times [2022-01-18 05:11:41,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:41,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489640491] [2022-01-18 05:11:41,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:41,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:41,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:41,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:41,615 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:41,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489640491] [2022-01-18 05:11:41,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489640491] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:41,615 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:41,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:41,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866802668] [2022-01-18 05:11:41,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:41,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:41,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:41,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:41,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:41,616 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) [2022-01-18 05:11:41,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:41,742 INFO L93 Difference]: Finished difference Result 419 states and 1167 transitions. [2022-01-18 05:11:41,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:41,743 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 [2022-01-18 05:11:41,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:41,743 INFO L225 Difference]: With dead ends: 419 [2022-01-18 05:11:41,743 INFO L226 Difference]: Without dead ends: 404 [2022-01-18 05:11:41,743 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 [2022-01-18 05:11:41,744 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 61 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:41,744 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 80 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:41,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2022-01-18 05:11:41,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 196. [2022-01-18 05:11:41,746 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) [2022-01-18 05:11:41,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 569 transitions. [2022-01-18 05:11:41,747 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 569 transitions. Word has length 17 [2022-01-18 05:11:41,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:41,747 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 569 transitions. [2022-01-18 05:11:41,747 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) [2022-01-18 05:11:41,747 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 569 transitions. [2022-01-18 05:11:41,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:41,747 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:41,747 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:41,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2022-01-18 05:11:41,748 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:41,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:41,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1118671151, now seen corresponding path program 88 times [2022-01-18 05:11:41,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:41,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642987997] [2022-01-18 05:11:41,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:41,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:41,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:41,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:41,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:41,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642987997] [2022-01-18 05:11:41,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642987997] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:41,814 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:41,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:41,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860054853] [2022-01-18 05:11:41,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:41,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:41,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:41,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:41,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:41,815 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) [2022-01-18 05:11:41,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:41,947 INFO L93 Difference]: Finished difference Result 382 states and 1052 transitions. [2022-01-18 05:11:41,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:41,948 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 05:11:41,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:41,948 INFO L225 Difference]: With dead ends: 382 [2022-01-18 05:11:41,948 INFO L226 Difference]: Without dead ends: 367 [2022-01-18 05:11:41,948 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 [2022-01-18 05:11:41,948 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 66 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:41,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 84 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:41,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2022-01-18 05:11:41,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 198. [2022-01-18 05:11:41,951 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) [2022-01-18 05:11:41,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 576 transitions. [2022-01-18 05:11:41,951 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 576 transitions. Word has length 17 [2022-01-18 05:11:41,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:41,951 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 576 transitions. [2022-01-18 05:11:41,951 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) [2022-01-18 05:11:41,951 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 576 transitions. [2022-01-18 05:11:41,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:41,952 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:41,952 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:41,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2022-01-18 05:11:41,952 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:41,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:41,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1966670413, now seen corresponding path program 89 times [2022-01-18 05:11:41,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:41,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43101306] [2022-01-18 05:11:41,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:41,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:41,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:42,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:42,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:42,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43101306] [2022-01-18 05:11:42,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43101306] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:42,004 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:42,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:42,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500863528] [2022-01-18 05:11:42,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:42,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:42,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:42,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:42,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:42,005 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) [2022-01-18 05:11:42,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:42,152 INFO L93 Difference]: Finished difference Result 383 states and 1063 transitions. [2022-01-18 05:11:42,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:42,152 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 [2022-01-18 05:11:42,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:42,153 INFO L225 Difference]: With dead ends: 383 [2022-01-18 05:11:42,153 INFO L226 Difference]: Without dead ends: 368 [2022-01-18 05:11:42,153 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 [2022-01-18 05:11:42,153 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 68 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:42,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 85 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:42,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2022-01-18 05:11:42,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 200. [2022-01-18 05:11:42,177 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) [2022-01-18 05:11:42,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 585 transitions. [2022-01-18 05:11:42,177 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 585 transitions. Word has length 17 [2022-01-18 05:11:42,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:42,177 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 585 transitions. [2022-01-18 05:11:42,177 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) [2022-01-18 05:11:42,178 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 585 transitions. [2022-01-18 05:11:42,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 05:11:42,178 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:42,178 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:42,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2022-01-18 05:11:42,178 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:42,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:42,179 INFO L85 PathProgramCache]: Analyzing trace with hash -981166127, now seen corresponding path program 90 times [2022-01-18 05:11:42,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:42,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914448508] [2022-01-18 05:11:42,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:42,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:42,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:42,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:42,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:42,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914448508] [2022-01-18 05:11:42,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914448508] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:42,229 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:42,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:42,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320251968] [2022-01-18 05:11:42,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:42,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:42,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:42,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:42,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:42,230 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) [2022-01-18 05:11:42,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:42,371 INFO L93 Difference]: Finished difference Result 362 states and 1025 transitions. [2022-01-18 05:11:42,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:42,371 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 [2022-01-18 05:11:42,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:42,371 INFO L225 Difference]: With dead ends: 362 [2022-01-18 05:11:42,371 INFO L226 Difference]: Without dead ends: 347 [2022-01-18 05:11:42,372 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 [2022-01-18 05:11:42,372 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 56 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:42,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 83 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:42,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2022-01-18 05:11:42,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 195. [2022-01-18 05:11:42,374 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) [2022-01-18 05:11:42,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 564 transitions. [2022-01-18 05:11:42,375 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 564 transitions. Word has length 17 [2022-01-18 05:11:42,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:42,375 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 564 transitions. [2022-01-18 05:11:42,375 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) [2022-01-18 05:11:42,375 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 564 transitions. [2022-01-18 05:11:42,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:11:42,375 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:42,375 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:42,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2022-01-18 05:11:42,375 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:42,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:42,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1951800714, now seen corresponding path program 1 times [2022-01-18 05:11:42,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:42,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922335409] [2022-01-18 05:11:42,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:42,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:42,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:42,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:42,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:42,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922335409] [2022-01-18 05:11:42,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922335409] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:42,441 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:42,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:11:42,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003282226] [2022-01-18 05:11:42,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:42,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:11:42,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:42,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:11:42,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:11:42,441 INFO L87 Difference]: Start difference. First operand 195 states and 564 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:42,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:42,538 INFO L93 Difference]: Finished difference Result 369 states and 1032 transitions. [2022-01-18 05:11:42,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 05:11:42,539 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 05:11:42,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:42,539 INFO L225 Difference]: With dead ends: 369 [2022-01-18 05:11:42,539 INFO L226 Difference]: Without dead ends: 311 [2022-01-18 05:11:42,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:11:42,539 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 62 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:42,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 43 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:42,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2022-01-18 05:11:42,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 222. [2022-01-18 05:11:42,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 221 states have (on average 2.8914027149321266) internal successors, (639), 221 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:42,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 639 transitions. [2022-01-18 05:11:42,543 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 639 transitions. Word has length 18 [2022-01-18 05:11:42,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:42,543 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 639 transitions. [2022-01-18 05:11:42,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:42,544 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 639 transitions. [2022-01-18 05:11:42,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:11:42,544 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:42,544 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:42,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2022-01-18 05:11:42,544 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:42,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:42,544 INFO L85 PathProgramCache]: Analyzing trace with hash 690829094, now seen corresponding path program 1 times [2022-01-18 05:11:42,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:42,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491062978] [2022-01-18 05:11:42,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:42,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:42,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:42,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:42,598 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:42,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491062978] [2022-01-18 05:11:42,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491062978] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:42,598 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:42,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:11:42,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607410776] [2022-01-18 05:11:42,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:42,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:11:42,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:42,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:11:42,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:11:42,598 INFO L87 Difference]: Start difference. First operand 222 states and 639 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:42,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:42,689 INFO L93 Difference]: Finished difference Result 390 states and 1082 transitions. [2022-01-18 05:11:42,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 05:11:42,689 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 05:11:42,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:42,690 INFO L225 Difference]: With dead ends: 390 [2022-01-18 05:11:42,690 INFO L226 Difference]: Without dead ends: 303 [2022-01-18 05:11:42,690 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:11:42,690 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 67 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:42,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 48 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:42,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2022-01-18 05:11:42,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 230. [2022-01-18 05:11:42,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 229 states have (on average 2.890829694323144) internal successors, (662), 229 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:42,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 662 transitions. [2022-01-18 05:11:42,693 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 662 transitions. Word has length 18 [2022-01-18 05:11:42,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:42,693 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 662 transitions. [2022-01-18 05:11:42,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:42,694 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 662 transitions. [2022-01-18 05:11:42,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:11:42,694 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:42,694 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:42,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2022-01-18 05:11:42,694 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:42,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:42,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1955100295, now seen corresponding path program 1 times [2022-01-18 05:11:42,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:42,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791843517] [2022-01-18 05:11:42,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:42,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:42,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:42,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:42,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:42,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791843517] [2022-01-18 05:11:42,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791843517] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:11:42,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171448556] [2022-01-18 05:11:42,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:42,744 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:11:42,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:11:42,746 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) [2022-01-18 05:11:42,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-18 05:11:42,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:42,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:11:42,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:11:42,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:42,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:11:43,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:43,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171448556] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:11:43,207 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:11:43,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2022-01-18 05:11:43,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172412471] [2022-01-18 05:11:43,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:11:43,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-18 05:11:43,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:43,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-18 05:11:43,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-01-18 05:11:43,208 INFO L87 Difference]: Start difference. First operand 230 states and 662 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:43,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:43,400 INFO L93 Difference]: Finished difference Result 364 states and 1028 transitions. [2022-01-18 05:11:43,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:43,401 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 05:11:43,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:43,401 INFO L225 Difference]: With dead ends: 364 [2022-01-18 05:11:43,401 INFO L226 Difference]: Without dead ends: 345 [2022-01-18 05:11:43,402 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-01-18 05:11:43,402 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 98 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:43,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 90 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:43,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2022-01-18 05:11:43,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 254. [2022-01-18 05:11:43,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 2.9011857707509883) internal successors, (734), 253 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:43,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 734 transitions. [2022-01-18 05:11:43,406 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 734 transitions. Word has length 18 [2022-01-18 05:11:43,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:43,406 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 734 transitions. [2022-01-18 05:11:43,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:43,406 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 734 transitions. [2022-01-18 05:11:43,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:11:43,407 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:43,407 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:43,426 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-18 05:11:43,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2022-01-18 05:11:43,608 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:43,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:43,608 INFO L85 PathProgramCache]: Analyzing trace with hash -234681749, now seen corresponding path program 2 times [2022-01-18 05:11:43,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:43,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125073017] [2022-01-18 05:11:43,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:43,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:43,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:43,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:43,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:43,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125073017] [2022-01-18 05:11:43,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125073017] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:11:43,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408777053] [2022-01-18 05:11:43,659 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 05:11:43,659 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:11:43,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:11:43,660 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) [2022-01-18 05:11:43,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-18 05:11:43,685 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:11:43,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:11:43,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:11:43,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:11:43,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:43,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:11:44,069 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:44,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408777053] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:11:44,069 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:11:44,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2022-01-18 05:11:44,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64696839] [2022-01-18 05:11:44,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:11:44,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 05:11:44,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:44,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 05:11:44,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-01-18 05:11:44,070 INFO L87 Difference]: Start difference. First operand 254 states and 734 transitions. Second operand has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 15 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:44,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:44,291 INFO L93 Difference]: Finished difference Result 406 states and 1136 transitions. [2022-01-18 05:11:44,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:44,292 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 15 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 05:11:44,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:44,292 INFO L225 Difference]: With dead ends: 406 [2022-01-18 05:11:44,292 INFO L226 Difference]: Without dead ends: 387 [2022-01-18 05:11:44,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2022-01-18 05:11:44,293 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 158 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:44,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 121 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 05:11:44,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2022-01-18 05:11:44,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 260. [2022-01-18 05:11:44,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 259 states have (on average 2.9382239382239383) internal successors, (761), 259 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:44,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 761 transitions. [2022-01-18 05:11:44,297 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 761 transitions. Word has length 18 [2022-01-18 05:11:44,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:44,297 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 761 transitions. [2022-01-18 05:11:44,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 15 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:44,297 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 761 transitions. [2022-01-18 05:11:44,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:11:44,297 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:44,297 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:44,316 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-18 05:11:44,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable108 [2022-01-18 05:11:44,511 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:44,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:44,512 INFO L85 PathProgramCache]: Analyzing trace with hash -212085201, now seen corresponding path program 3 times [2022-01-18 05:11:44,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:44,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314204687] [2022-01-18 05:11:44,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:44,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:44,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:44,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:44,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:44,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314204687] [2022-01-18 05:11:44,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314204687] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:11:44,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321083558] [2022-01-18 05:11:44,565 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:11:44,565 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:11:44,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:11:44,566 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) [2022-01-18 05:11:44,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-18 05:11:44,590 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 05:11:44,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:11:44,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:11:44,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:11:44,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:44,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:11:44,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:44,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321083558] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:11:44,908 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:11:44,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2022-01-18 05:11:44,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005789528] [2022-01-18 05:11:44,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:11:44,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-18 05:11:44,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:44,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-18 05:11:44,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-01-18 05:11:44,909 INFO L87 Difference]: Start difference. First operand 260 states and 761 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:45,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:45,088 INFO L93 Difference]: Finished difference Result 385 states and 1090 transitions. [2022-01-18 05:11:45,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:45,088 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 05:11:45,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:45,089 INFO L225 Difference]: With dead ends: 385 [2022-01-18 05:11:45,089 INFO L226 Difference]: Without dead ends: 366 [2022-01-18 05:11:45,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2022-01-18 05:11:45,089 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 103 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:45,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 88 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:45,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2022-01-18 05:11:45,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 257. [2022-01-18 05:11:45,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 256 states have (on average 2.91796875) internal successors, (747), 256 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:45,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 747 transitions. [2022-01-18 05:11:45,093 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 747 transitions. Word has length 18 [2022-01-18 05:11:45,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:45,093 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 747 transitions. [2022-01-18 05:11:45,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:45,093 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 747 transitions. [2022-01-18 05:11:45,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:11:45,093 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:45,093 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:45,111 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-01-18 05:11:45,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:11:45,309 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:45,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:45,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1729613765, now seen corresponding path program 4 times [2022-01-18 05:11:45,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:45,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066396442] [2022-01-18 05:11:45,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:45,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:45,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:45,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:45,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:45,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066396442] [2022-01-18 05:11:45,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066396442] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:11:45,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713491632] [2022-01-18 05:11:45,362 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 05:11:45,362 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:11:45,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:11:45,363 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) [2022-01-18 05:11:45,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-18 05:11:45,403 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 05:11:45,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:11:45,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:11:45,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:11:45,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:45,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:11:45,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:45,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713491632] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:11:45,707 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:11:45,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2022-01-18 05:11:45,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232281544] [2022-01-18 05:11:45,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:11:45,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-18 05:11:45,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:45,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-18 05:11:45,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-01-18 05:11:45,708 INFO L87 Difference]: Start difference. First operand 257 states and 747 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:45,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:45,885 INFO L93 Difference]: Finished difference Result 396 states and 1123 transitions. [2022-01-18 05:11:45,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:45,885 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 05:11:45,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:45,886 INFO L225 Difference]: With dead ends: 396 [2022-01-18 05:11:45,886 INFO L226 Difference]: Without dead ends: 377 [2022-01-18 05:11:45,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-01-18 05:11:45,886 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 90 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:45,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 95 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:45,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-01-18 05:11:45,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 269. [2022-01-18 05:11:45,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 268 states have (on average 2.921641791044776) internal successors, (783), 268 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:45,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 783 transitions. [2022-01-18 05:11:45,890 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 783 transitions. Word has length 18 [2022-01-18 05:11:45,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:45,890 INFO L470 AbstractCegarLoop]: Abstraction has 269 states and 783 transitions. [2022-01-18 05:11:45,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:45,890 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 783 transitions. [2022-01-18 05:11:45,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:11:45,891 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:45,891 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:45,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-18 05:11:46,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:11:46,093 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:46,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:46,094 INFO L85 PathProgramCache]: Analyzing trace with hash -769911551, now seen corresponding path program 5 times [2022-01-18 05:11:46,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:46,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814865985] [2022-01-18 05:11:46,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:46,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:46,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:46,149 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:46,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:46,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814865985] [2022-01-18 05:11:46,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814865985] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:11:46,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881222629] [2022-01-18 05:11:46,150 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 05:11:46,150 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:11:46,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:11:46,150 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) [2022-01-18 05:11:46,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-18 05:11:46,177 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:11:46,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:11:46,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:11:46,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:11:46,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:46,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:11:46,513 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:46,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881222629] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:11:46,513 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:11:46,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2022-01-18 05:11:46,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440319513] [2022-01-18 05:11:46,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:11:46,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-18 05:11:46,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:46,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-18 05:11:46,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-01-18 05:11:46,514 INFO L87 Difference]: Start difference. First operand 269 states and 783 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:46,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:46,700 INFO L93 Difference]: Finished difference Result 438 states and 1232 transitions. [2022-01-18 05:11:46,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:46,701 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 05:11:46,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:46,701 INFO L225 Difference]: With dead ends: 438 [2022-01-18 05:11:46,702 INFO L226 Difference]: Without dead ends: 419 [2022-01-18 05:11:46,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2022-01-18 05:11:46,702 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 106 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:46,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 100 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:46,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2022-01-18 05:11:46,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 273. [2022-01-18 05:11:46,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 272 states have (on average 2.952205882352941) internal successors, (803), 272 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:46,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 803 transitions. [2022-01-18 05:11:46,706 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 803 transitions. Word has length 18 [2022-01-18 05:11:46,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:46,706 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 803 transitions. [2022-01-18 05:11:46,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:46,706 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 803 transitions. [2022-01-18 05:11:46,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:11:46,707 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:46,707 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:46,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-18 05:11:46,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2022-01-18 05:11:46,908 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:46,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:46,908 INFO L85 PathProgramCache]: Analyzing trace with hash -747315003, now seen corresponding path program 6 times [2022-01-18 05:11:46,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:46,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181670624] [2022-01-18 05:11:46,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:46,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:46,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:46,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:46,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:46,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181670624] [2022-01-18 05:11:46,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181670624] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:11:46,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354200613] [2022-01-18 05:11:46,967 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 05:11:46,967 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:11:46,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:11:46,968 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) [2022-01-18 05:11:46,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-18 05:11:46,992 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 05:11:46,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:11:46,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:11:46,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:11:47,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:47,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:11:47,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:47,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354200613] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:11:47,321 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:11:47,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 11 [2022-01-18 05:11:47,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816517888] [2022-01-18 05:11:47,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:11:47,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 05:11:47,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:47,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 05:11:47,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:11:47,322 INFO L87 Difference]: Start difference. First operand 273 states and 803 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:47,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:47,525 INFO L93 Difference]: Finished difference Result 409 states and 1166 transitions. [2022-01-18 05:11:47,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:47,525 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 05:11:47,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:47,526 INFO L225 Difference]: With dead ends: 409 [2022-01-18 05:11:47,526 INFO L226 Difference]: Without dead ends: 390 [2022-01-18 05:11:47,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2022-01-18 05:11:47,526 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 73 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:47,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 110 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:47,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2022-01-18 05:11:47,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 269. [2022-01-18 05:11:47,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 268 states have (on average 2.921641791044776) internal successors, (783), 268 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:47,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 783 transitions. [2022-01-18 05:11:47,530 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 783 transitions. Word has length 18 [2022-01-18 05:11:47,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:47,530 INFO L470 AbstractCegarLoop]: Abstraction has 269 states and 783 transitions. [2022-01-18 05:11:47,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:47,530 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 783 transitions. [2022-01-18 05:11:47,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:11:47,531 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:47,531 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:47,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-18 05:11:47,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2022-01-18 05:11:47,739 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:47,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:47,740 INFO L85 PathProgramCache]: Analyzing trace with hash -122015580, now seen corresponding path program 2 times [2022-01-18 05:11:47,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:47,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178975399] [2022-01-18 05:11:47,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:47,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:47,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:47,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:47,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:47,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178975399] [2022-01-18 05:11:47,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178975399] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:47,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:47,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:11:47,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591433991] [2022-01-18 05:11:47,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:47,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:11:47,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:47,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:11:47,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:11:47,782 INFO L87 Difference]: Start difference. First operand 269 states and 783 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:47,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:47,866 INFO L93 Difference]: Finished difference Result 528 states and 1474 transitions. [2022-01-18 05:11:47,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 05:11:47,867 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 05:11:47,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:47,867 INFO L225 Difference]: With dead ends: 528 [2022-01-18 05:11:47,867 INFO L226 Difference]: Without dead ends: 457 [2022-01-18 05:11:47,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:11:47,868 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 78 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:47,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 50 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:47,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2022-01-18 05:11:47,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 287. [2022-01-18 05:11:47,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 2.972027972027972) internal successors, (850), 286 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:47,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 850 transitions. [2022-01-18 05:11:47,872 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 850 transitions. Word has length 18 [2022-01-18 05:11:47,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:47,872 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 850 transitions. [2022-01-18 05:11:47,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:47,872 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 850 transitions. [2022-01-18 05:11:47,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:11:47,873 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:47,873 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:47,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2022-01-18 05:11:47,873 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:47,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:47,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1432806821, now seen corresponding path program 7 times [2022-01-18 05:11:47,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:47,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856167002] [2022-01-18 05:11:47,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:47,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:47,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:47,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:47,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:47,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856167002] [2022-01-18 05:11:47,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856167002] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:11:47,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722437088] [2022-01-18 05:11:47,923 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 05:11:47,923 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:11:47,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:11:47,924 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) [2022-01-18 05:11:47,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-18 05:11:47,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:47,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:11:47,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:11:48,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:48,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:11:48,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:48,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722437088] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:11:48,300 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:11:48,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2022-01-18 05:11:48,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67586833] [2022-01-18 05:11:48,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:11:48,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 05:11:48,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:48,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 05:11:48,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-01-18 05:11:48,301 INFO L87 Difference]: Start difference. First operand 287 states and 850 transitions. Second operand has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:48,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:48,502 INFO L93 Difference]: Finished difference Result 580 states and 1638 transitions. [2022-01-18 05:11:48,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:48,502 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 05:11:48,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:48,503 INFO L225 Difference]: With dead ends: 580 [2022-01-18 05:11:48,503 INFO L226 Difference]: Without dead ends: 561 [2022-01-18 05:11:48,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-01-18 05:11:48,503 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 93 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:48,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 118 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 05:11:48,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2022-01-18 05:11:48,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 294. [2022-01-18 05:11:48,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 293 states have (on average 2.9965870307167237) internal successors, (878), 293 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:48,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 878 transitions. [2022-01-18 05:11:48,508 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 878 transitions. Word has length 18 [2022-01-18 05:11:48,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:48,508 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 878 transitions. [2022-01-18 05:11:48,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:48,508 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 878 transitions. [2022-01-18 05:11:48,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:11:48,508 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:48,509 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:48,524 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-18 05:11:48,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:11:48,709 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:48,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:48,709 INFO L85 PathProgramCache]: Analyzing trace with hash -756975223, now seen corresponding path program 8 times [2022-01-18 05:11:48,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:48,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061580859] [2022-01-18 05:11:48,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:48,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:48,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:48,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:48,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:48,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061580859] [2022-01-18 05:11:48,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061580859] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:11:48,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477959259] [2022-01-18 05:11:48,763 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 05:11:48,764 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:11:48,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:11:48,764 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) [2022-01-18 05:11:48,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-18 05:11:48,789 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:11:48,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:11:48,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:11:48,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:11:48,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:48,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:11:49,152 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:49,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477959259] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:11:49,152 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:11:49,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 11 [2022-01-18 05:11:49,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009531878] [2022-01-18 05:11:49,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:11:49,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 05:11:49,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:49,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 05:11:49,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:11:49,153 INFO L87 Difference]: Start difference. First operand 294 states and 878 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:49,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:49,330 INFO L93 Difference]: Finished difference Result 556 states and 1599 transitions. [2022-01-18 05:11:49,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:49,331 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 05:11:49,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:49,332 INFO L225 Difference]: With dead ends: 556 [2022-01-18 05:11:49,332 INFO L226 Difference]: Without dead ends: 537 [2022-01-18 05:11:49,332 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2022-01-18 05:11:49,332 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 82 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:49,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 97 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:49,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2022-01-18 05:11:49,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 298. [2022-01-18 05:11:49,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 297 states have (on average 3.0235690235690234) internal successors, (898), 297 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:49,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 898 transitions. [2022-01-18 05:11:49,337 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 898 transitions. Word has length 18 [2022-01-18 05:11:49,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:49,337 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 898 transitions. [2022-01-18 05:11:49,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:49,337 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 898 transitions. [2022-01-18 05:11:49,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:11:49,337 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:49,337 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:49,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-18 05:11:49,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable115 [2022-01-18 05:11:49,538 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:49,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:49,538 INFO L85 PathProgramCache]: Analyzing trace with hash -734378675, now seen corresponding path program 9 times [2022-01-18 05:11:49,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:49,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693269642] [2022-01-18 05:11:49,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:49,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:49,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:49,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:49,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:49,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693269642] [2022-01-18 05:11:49,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693269642] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:11:49,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857799933] [2022-01-18 05:11:49,590 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:11:49,590 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:11:49,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:11:49,591 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) [2022-01-18 05:11:49,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-18 05:11:49,614 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 05:11:49,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:11:49,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:11:49,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:11:49,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:49,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:11:49,969 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:49,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857799933] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:11:49,969 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:11:49,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2022-01-18 05:11:49,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676701913] [2022-01-18 05:11:49,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:11:49,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 05:11:49,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:49,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 05:11:49,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-01-18 05:11:49,970 INFO L87 Difference]: Start difference. First operand 298 states and 898 transitions. Second operand has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:50,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:50,151 INFO L93 Difference]: Finished difference Result 566 states and 1624 transitions. [2022-01-18 05:11:50,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:50,151 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 05:11:50,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:50,152 INFO L225 Difference]: With dead ends: 566 [2022-01-18 05:11:50,152 INFO L226 Difference]: Without dead ends: 547 [2022-01-18 05:11:50,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-01-18 05:11:50,152 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 121 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:50,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 103 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:50,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2022-01-18 05:11:50,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 287. [2022-01-18 05:11:50,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 2.972027972027972) internal successors, (850), 286 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:50,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 850 transitions. [2022-01-18 05:11:50,157 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 850 transitions. Word has length 18 [2022-01-18 05:11:50,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:50,157 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 850 transitions. [2022-01-18 05:11:50,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:50,157 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 850 transitions. [2022-01-18 05:11:50,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:11:50,157 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:50,157 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:50,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-18 05:11:50,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:11:50,373 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:50,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:50,374 INFO L85 PathProgramCache]: Analyzing trace with hash 303011209, now seen corresponding path program 10 times [2022-01-18 05:11:50,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:50,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126763107] [2022-01-18 05:11:50,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:50,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:50,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:50,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:50,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:50,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126763107] [2022-01-18 05:11:50,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126763107] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:11:50,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472069946] [2022-01-18 05:11:50,438 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 05:11:50,438 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:11:50,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:11:50,439 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) [2022-01-18 05:11:50,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-18 05:11:50,472 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 05:11:50,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:11:50,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:11:50,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:11:50,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:50,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:11:50,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:50,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472069946] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:11:50,797 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:11:50,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 15 [2022-01-18 05:11:50,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964824436] [2022-01-18 05:11:50,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:11:50,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 05:11:50,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:50,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 05:11:50,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-01-18 05:11:50,797 INFO L87 Difference]: Start difference. First operand 287 states and 850 transitions. Second operand has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:51,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:51,054 INFO L93 Difference]: Finished difference Result 473 states and 1329 transitions. [2022-01-18 05:11:51,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:51,054 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 05:11:51,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:51,055 INFO L225 Difference]: With dead ends: 473 [2022-01-18 05:11:51,055 INFO L226 Difference]: Without dead ends: 454 [2022-01-18 05:11:51,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-01-18 05:11:51,055 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 119 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:51,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 127 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 05:11:51,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2022-01-18 05:11:51,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 291. [2022-01-18 05:11:51,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 290 states have (on average 2.9655172413793105) internal successors, (860), 290 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:51,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 860 transitions. [2022-01-18 05:11:51,059 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 860 transitions. Word has length 18 [2022-01-18 05:11:51,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:51,060 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 860 transitions. [2022-01-18 05:11:51,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:51,060 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 860 transitions. [2022-01-18 05:11:51,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:11:51,063 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:51,063 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:51,079 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-18 05:11:51,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2022-01-18 05:11:51,264 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:51,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:51,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1290665002, now seen corresponding path program 2 times [2022-01-18 05:11:51,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:51,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879711438] [2022-01-18 05:11:51,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:51,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:51,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:51,309 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:51,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:51,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879711438] [2022-01-18 05:11:51,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879711438] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:11:51,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047592470] [2022-01-18 05:11:51,309 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 05:11:51,309 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:11:51,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:11:51,310 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) [2022-01-18 05:11:51,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-18 05:11:51,336 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:11:51,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:11:51,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:11:51,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:11:51,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:51,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:11:51,536 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:51,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047592470] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:11:51,536 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:11:51,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 14 [2022-01-18 05:11:51,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954990810] [2022-01-18 05:11:51,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:11:51,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 05:11:51,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:51,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 05:11:51,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-01-18 05:11:51,537 INFO L87 Difference]: Start difference. First operand 291 states and 860 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:51,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:51,879 INFO L93 Difference]: Finished difference Result 726 states and 2026 transitions. [2022-01-18 05:11:51,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 05:11:51,879 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 05:11:51,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:51,880 INFO L225 Difference]: With dead ends: 726 [2022-01-18 05:11:51,880 INFO L226 Difference]: Without dead ends: 646 [2022-01-18 05:11:51,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=390, Unknown=0, NotChecked=0, Total=552 [2022-01-18 05:11:51,881 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 235 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:51,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 166 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 05:11:51,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2022-01-18 05:11:51,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 308. [2022-01-18 05:11:51,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 307 states have (on average 3.045602605863192) internal successors, (935), 307 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:51,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 935 transitions. [2022-01-18 05:11:51,886 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 935 transitions. Word has length 18 [2022-01-18 05:11:51,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:51,886 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 935 transitions. [2022-01-18 05:11:51,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:51,886 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 935 transitions. [2022-01-18 05:11:51,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:11:51,886 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:51,886 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:51,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-01-18 05:11:52,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2022-01-18 05:11:52,087 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:52,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:52,087 INFO L85 PathProgramCache]: Analyzing trace with hash -643487665, now seen corresponding path program 11 times [2022-01-18 05:11:52,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:52,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442185624] [2022-01-18 05:11:52,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:52,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:52,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:52,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:52,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:52,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442185624] [2022-01-18 05:11:52,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442185624] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:11:52,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493259290] [2022-01-18 05:11:52,147 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 05:11:52,147 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:11:52,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:11:52,148 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) [2022-01-18 05:11:52,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-01-18 05:11:52,173 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:11:52,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:11:52,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:11:52,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:11:52,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:52,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:11:52,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:52,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493259290] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 05:11:52,612 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 05:11:52,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 16 [2022-01-18 05:11:52,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193134567] [2022-01-18 05:11:52,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:52,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:52,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:52,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:52,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-01-18 05:11:52,613 INFO L87 Difference]: Start difference. First operand 308 states and 935 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:52,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:52,786 INFO L93 Difference]: Finished difference Result 455 states and 1322 transitions. [2022-01-18 05:11:52,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:52,786 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 [2022-01-18 05:11:52,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:52,787 INFO L225 Difference]: With dead ends: 455 [2022-01-18 05:11:52,787 INFO L226 Difference]: Without dead ends: 432 [2022-01-18 05:11:52,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2022-01-18 05:11:52,787 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 78 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:52,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 65 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:52,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2022-01-18 05:11:52,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 316. [2022-01-18 05:11:52,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 315 states have (on average 3.0444444444444443) internal successors, (959), 315 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:52,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 959 transitions. [2022-01-18 05:11:52,791 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 959 transitions. Word has length 18 [2022-01-18 05:11:52,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:52,791 INFO L470 AbstractCegarLoop]: Abstraction has 316 states and 959 transitions. [2022-01-18 05:11:52,791 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) [2022-01-18 05:11:52,791 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 959 transitions. [2022-01-18 05:11:52,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:11:52,792 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:52,792 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:52,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-01-18 05:11:52,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:11:52,996 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:52,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:52,996 INFO L85 PathProgramCache]: Analyzing trace with hash -643460870, now seen corresponding path program 3 times [2022-01-18 05:11:52,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:52,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225596865] [2022-01-18 05:11:52,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:52,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:52,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:53,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:53,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:53,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225596865] [2022-01-18 05:11:53,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225596865] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:53,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:53,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:11:53,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924867938] [2022-01-18 05:11:53,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:53,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:53,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:53,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:53,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:11:53,053 INFO L87 Difference]: Start difference. First operand 316 states and 959 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:53,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:53,203 INFO L93 Difference]: Finished difference Result 471 states and 1362 transitions. [2022-01-18 05:11:53,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:53,207 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 [2022-01-18 05:11:53,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:53,208 INFO L225 Difference]: With dead ends: 471 [2022-01-18 05:11:53,208 INFO L226 Difference]: Without dead ends: 442 [2022-01-18 05:11:53,208 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 [2022-01-18 05:11:53,208 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 64 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:53,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 82 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:53,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2022-01-18 05:11:53,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 316. [2022-01-18 05:11:53,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 315 states have (on average 3.038095238095238) internal successors, (957), 315 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:53,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 957 transitions. [2022-01-18 05:11:53,213 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 957 transitions. Word has length 18 [2022-01-18 05:11:53,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:53,213 INFO L470 AbstractCegarLoop]: Abstraction has 316 states and 957 transitions. [2022-01-18 05:11:53,213 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) [2022-01-18 05:11:53,213 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 957 transitions. [2022-01-18 05:11:53,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:11:53,213 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:53,213 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:53,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2022-01-18 05:11:53,214 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:53,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:53,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1235680749, now seen corresponding path program 12 times [2022-01-18 05:11:53,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:53,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335174890] [2022-01-18 05:11:53,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:53,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:53,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:53,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:53,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:53,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335174890] [2022-01-18 05:11:53,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335174890] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:11:53,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450589644] [2022-01-18 05:11:53,269 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 05:11:53,269 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:11:53,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:11:53,270 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) [2022-01-18 05:11:53,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-01-18 05:11:53,293 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 05:11:53,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:11:53,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:11:53,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:11:53,411 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:53,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:11:53,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:53,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450589644] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:11:53,657 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:11:53,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2022-01-18 05:11:53,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082834370] [2022-01-18 05:11:53,657 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:11:53,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 05:11:53,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:53,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 05:11:53,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-01-18 05:11:53,657 INFO L87 Difference]: Start difference. First operand 316 states and 957 transitions. Second operand has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:53,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:53,892 INFO L93 Difference]: Finished difference Result 439 states and 1290 transitions. [2022-01-18 05:11:53,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:53,893 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 [2022-01-18 05:11:53,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:53,893 INFO L225 Difference]: With dead ends: 439 [2022-01-18 05:11:53,893 INFO L226 Difference]: Without dead ends: 420 [2022-01-18 05:11:53,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2022-01-18 05:11:53,894 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 97 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:53,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 124 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:53,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2022-01-18 05:11:53,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 310. [2022-01-18 05:11:53,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 309 states have (on average 3.042071197411003) internal successors, (940), 309 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:53,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 940 transitions. [2022-01-18 05:11:53,898 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 940 transitions. Word has length 18 [2022-01-18 05:11:53,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:53,898 INFO L470 AbstractCegarLoop]: Abstraction has 310 states and 940 transitions. [2022-01-18 05:11:53,898 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) [2022-01-18 05:11:53,898 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 940 transitions. [2022-01-18 05:11:53,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:11:53,898 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:53,898 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:53,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-01-18 05:11:54,099 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,SelfDestructingSolverStorable121 [2022-01-18 05:11:54,099 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:54,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:54,099 INFO L85 PathProgramCache]: Analyzing trace with hash -34208214, now seen corresponding path program 3 times [2022-01-18 05:11:54,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:54,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065686888] [2022-01-18 05:11:54,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:54,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:54,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:54,131 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:54,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:54,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065686888] [2022-01-18 05:11:54,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065686888] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:11:54,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369389298] [2022-01-18 05:11:54,131 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:11:54,131 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:11:54,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:11:54,132 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) [2022-01-18 05:11:54,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-01-18 05:11:54,160 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 05:11:54,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:11:54,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 05:11:54,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:11:54,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:54,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:11:54,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:54,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369389298] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:11:54,397 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:11:54,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 15 [2022-01-18 05:11:54,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545184440] [2022-01-18 05:11:54,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:11:54,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 05:11:54,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:54,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 05:11:54,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-01-18 05:11:54,397 INFO L87 Difference]: Start difference. First operand 310 states and 940 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:54,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:54,590 INFO L93 Difference]: Finished difference Result 512 states and 1459 transitions. [2022-01-18 05:11:54,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:11:54,590 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 05:11:54,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:54,591 INFO L225 Difference]: With dead ends: 512 [2022-01-18 05:11:54,591 INFO L226 Difference]: Without dead ends: 434 [2022-01-18 05:11:54,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2022-01-18 05:11:54,591 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 153 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:54,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 119 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:54,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2022-01-18 05:11:54,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 301. [2022-01-18 05:11:54,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 300 states have (on average 3.03) internal successors, (909), 300 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:54,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 909 transitions. [2022-01-18 05:11:54,595 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 909 transitions. Word has length 18 [2022-01-18 05:11:54,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:54,595 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 909 transitions. [2022-01-18 05:11:54,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:54,595 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 909 transitions. [2022-01-18 05:11:54,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:11:54,596 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:54,596 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:54,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-01-18 05:11:54,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:11:54,796 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:54,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:54,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1601323667, now seen corresponding path program 13 times [2022-01-18 05:11:54,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:54,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504599773] [2022-01-18 05:11:54,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:54,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:54,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:54,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:54,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:54,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504599773] [2022-01-18 05:11:54,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504599773] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:11:54,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723331316] [2022-01-18 05:11:54,861 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 05:11:54,861 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:11:54,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:11:54,862 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) [2022-01-18 05:11:54,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-01-18 05:11:54,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:54,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:11:54,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:11:55,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:55,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:11:55,262 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:55,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723331316] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:11:55,262 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:11:55,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 14 [2022-01-18 05:11:55,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123545175] [2022-01-18 05:11:55,262 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:11:55,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 05:11:55,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:55,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 05:11:55,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-01-18 05:11:55,263 INFO L87 Difference]: Start difference. First operand 301 states and 909 transitions. Second operand has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:55,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:55,461 INFO L93 Difference]: Finished difference Result 503 states and 1452 transitions. [2022-01-18 05:11:55,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:55,462 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 05:11:55,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:55,463 INFO L225 Difference]: With dead ends: 503 [2022-01-18 05:11:55,463 INFO L226 Difference]: Without dead ends: 484 [2022-01-18 05:11:55,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2022-01-18 05:11:55,463 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 128 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:55,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 107 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:55,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2022-01-18 05:11:55,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 307. [2022-01-18 05:11:55,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 306 states have (on average 3.0620915032679736) internal successors, (937), 306 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:55,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 937 transitions. [2022-01-18 05:11:55,467 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 937 transitions. Word has length 18 [2022-01-18 05:11:55,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:55,467 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 937 transitions. [2022-01-18 05:11:55,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:55,467 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 937 transitions. [2022-01-18 05:11:55,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:11:55,468 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:55,468 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:55,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-01-18 05:11:55,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2022-01-18 05:11:55,668 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:55,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:55,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1762543607, now seen corresponding path program 14 times [2022-01-18 05:11:55,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:55,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942456700] [2022-01-18 05:11:55,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:55,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:55,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:55,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:55,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:55,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942456700] [2022-01-18 05:11:55,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942456700] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:11:55,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978814984] [2022-01-18 05:11:55,726 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 05:11:55,726 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:11:55,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:11:55,727 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) [2022-01-18 05:11:55,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-01-18 05:11:55,750 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:11:55,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:11:55,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:11:55,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:11:55,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:55,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:11:56,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:56,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978814984] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 05:11:56,197 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 05:11:56,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 14 [2022-01-18 05:11:56,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762188921] [2022-01-18 05:11:56,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:56,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:56,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:56,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:56,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-01-18 05:11:56,198 INFO L87 Difference]: Start difference. First operand 307 states and 937 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:56,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:56,385 INFO L93 Difference]: Finished difference Result 491 states and 1412 transitions. [2022-01-18 05:11:56,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:56,385 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 05:11:56,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:56,386 INFO L225 Difference]: With dead ends: 491 [2022-01-18 05:11:56,386 INFO L226 Difference]: Without dead ends: 468 [2022-01-18 05:11:56,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2022-01-18 05:11:56,386 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 85 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:56,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 61 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:56,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2022-01-18 05:11:56,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 311. [2022-01-18 05:11:56,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 310 states have (on average 3.041935483870968) internal successors, (943), 310 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:56,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 943 transitions. [2022-01-18 05:11:56,390 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 943 transitions. Word has length 18 [2022-01-18 05:11:56,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:56,390 INFO L470 AbstractCegarLoop]: Abstraction has 311 states and 943 transitions. [2022-01-18 05:11:56,390 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) [2022-01-18 05:11:56,391 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 943 transitions. [2022-01-18 05:11:56,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:11:56,391 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:56,391 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:56,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-01-18 05:11:56,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2022-01-18 05:11:56,606 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:56,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:56,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1575573672, now seen corresponding path program 4 times [2022-01-18 05:11:56,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:56,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802553710] [2022-01-18 05:11:56,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:56,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:56,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:56,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:56,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:56,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802553710] [2022-01-18 05:11:56,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802553710] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:11:56,644 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:11:56,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:11:56,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261827142] [2022-01-18 05:11:56,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:56,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:11:56,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:56,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:11:56,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:11:56,644 INFO L87 Difference]: Start difference. First operand 311 states and 943 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:56,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:56,737 INFO L93 Difference]: Finished difference Result 521 states and 1488 transitions. [2022-01-18 05:11:56,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 05:11:56,737 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 05:11:56,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:56,738 INFO L225 Difference]: With dead ends: 521 [2022-01-18 05:11:56,738 INFO L226 Difference]: Without dead ends: 459 [2022-01-18 05:11:56,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:11:56,738 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 64 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:56,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 59 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:56,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2022-01-18 05:11:56,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 303. [2022-01-18 05:11:56,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 302 states have (on average 3.019867549668874) internal successors, (912), 302 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:56,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 912 transitions. [2022-01-18 05:11:56,743 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 912 transitions. Word has length 18 [2022-01-18 05:11:56,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:56,743 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 912 transitions. [2022-01-18 05:11:56,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:56,743 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 912 transitions. [2022-01-18 05:11:56,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:11:56,743 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:56,743 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:56,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2022-01-18 05:11:56,744 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:56,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:56,744 INFO L85 PathProgramCache]: Analyzing trace with hash 531772977, now seen corresponding path program 15 times [2022-01-18 05:11:56,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:56,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076680428] [2022-01-18 05:11:56,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:56,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:56,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:56,815 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:56,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:56,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076680428] [2022-01-18 05:11:56,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076680428] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:11:56,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644169907] [2022-01-18 05:11:56,815 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:11:56,815 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:11:56,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:11:56,816 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) [2022-01-18 05:11:56,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-01-18 05:11:56,839 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 05:11:56,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:11:56,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:11:56,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:11:56,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:56,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:11:57,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:57,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644169907] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:11:57,265 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:11:57,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 18 [2022-01-18 05:11:57,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167336506] [2022-01-18 05:11:57,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:11:57,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 05:11:57,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:57,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 05:11:57,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2022-01-18 05:11:57,266 INFO L87 Difference]: Start difference. First operand 303 states and 912 transitions. Second operand has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:57,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:57,534 INFO L93 Difference]: Finished difference Result 503 states and 1430 transitions. [2022-01-18 05:11:57,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:57,534 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 05:11:57,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:57,535 INFO L225 Difference]: With dead ends: 503 [2022-01-18 05:11:57,535 INFO L226 Difference]: Without dead ends: 484 [2022-01-18 05:11:57,535 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2022-01-18 05:11:57,535 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 147 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:57,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 157 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 05:11:57,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2022-01-18 05:11:57,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 300. [2022-01-18 05:11:57,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 299 states have (on average 3.040133779264214) internal successors, (909), 299 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:57,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 909 transitions. [2022-01-18 05:11:57,540 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 909 transitions. Word has length 18 [2022-01-18 05:11:57,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:57,540 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 909 transitions. [2022-01-18 05:11:57,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:57,540 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 909 transitions. [2022-01-18 05:11:57,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:11:57,541 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:57,541 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:57,558 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-01-18 05:11:57,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:11:57,758 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:57,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:57,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1616987215, now seen corresponding path program 16 times [2022-01-18 05:11:57,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:57,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030694851] [2022-01-18 05:11:57,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:57,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:57,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:57,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:57,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:57,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030694851] [2022-01-18 05:11:57,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030694851] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:11:57,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235219099] [2022-01-18 05:11:57,818 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 05:11:57,818 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:11:57,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:11:57,818 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) [2022-01-18 05:11:57,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-01-18 05:11:57,845 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 05:11:57,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:11:57,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:11:57,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:11:57,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:57,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:11:58,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:58,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235219099] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:11:58,279 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:11:58,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2022-01-18 05:11:58,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110372772] [2022-01-18 05:11:58,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:11:58,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 05:11:58,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:58,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 05:11:58,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-01-18 05:11:58,279 INFO L87 Difference]: Start difference. First operand 300 states and 909 transitions. Second operand has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:58,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:58,434 INFO L93 Difference]: Finished difference Result 484 states and 1401 transitions. [2022-01-18 05:11:58,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:58,434 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 05:11:58,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:58,435 INFO L225 Difference]: With dead ends: 484 [2022-01-18 05:11:58,435 INFO L226 Difference]: Without dead ends: 465 [2022-01-18 05:11:58,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2022-01-18 05:11:58,435 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 80 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:58,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 106 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:58,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2022-01-18 05:11:58,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 296. [2022-01-18 05:11:58,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 295 states have (on average 3.013559322033898) internal successors, (889), 295 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:58,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 889 transitions. [2022-01-18 05:11:58,440 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 889 transitions. Word has length 18 [2022-01-18 05:11:58,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:58,440 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 889 transitions. [2022-01-18 05:11:58,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:58,440 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 889 transitions. [2022-01-18 05:11:58,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:11:58,440 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:58,440 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:58,458 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-01-18 05:11:58,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:11:58,656 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:58,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:58,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1672937933, now seen corresponding path program 17 times [2022-01-18 05:11:58,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:58,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917918911] [2022-01-18 05:11:58,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:58,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:58,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:58,713 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:58,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:58,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917918911] [2022-01-18 05:11:58,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917918911] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:11:58,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280055011] [2022-01-18 05:11:58,714 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 05:11:58,714 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:11:58,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:11:58,715 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) [2022-01-18 05:11:58,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-01-18 05:11:58,738 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:11:58,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:11:58,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:11:58,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:11:58,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:58,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:11:59,126 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:59,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280055011] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 05:11:59,126 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 05:11:59,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 15 [2022-01-18 05:11:59,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743641990] [2022-01-18 05:11:59,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:11:59,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:11:59,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:59,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:11:59,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-01-18 05:11:59,127 INFO L87 Difference]: Start difference. First operand 296 states and 889 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:59,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:11:59,321 INFO L93 Difference]: Finished difference Result 450 states and 1288 transitions. [2022-01-18 05:11:59,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:11:59,321 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 [2022-01-18 05:11:59,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:11:59,322 INFO L225 Difference]: With dead ends: 450 [2022-01-18 05:11:59,322 INFO L226 Difference]: Without dead ends: 427 [2022-01-18 05:11:59,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2022-01-18 05:11:59,322 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 82 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:11:59,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 68 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:11:59,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2022-01-18 05:11:59,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 304. [2022-01-18 05:11:59,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 303 states have (on average 3.0066006600660065) internal successors, (911), 303 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:11:59,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 911 transitions. [2022-01-18 05:11:59,326 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 911 transitions. Word has length 18 [2022-01-18 05:11:59,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:11:59,327 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 911 transitions. [2022-01-18 05:11:59,327 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) [2022-01-18 05:11:59,327 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 911 transitions. [2022-01-18 05:11:59,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:11:59,327 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:11:59,327 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:11:59,342 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-01-18 05:11:59,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:11:59,528 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:11:59,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:11:59,528 INFO L85 PathProgramCache]: Analyzing trace with hash 494821513, now seen corresponding path program 18 times [2022-01-18 05:11:59,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:11:59,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849464397] [2022-01-18 05:11:59,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:11:59,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:11:59,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:11:59,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:59,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:11:59,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849464397] [2022-01-18 05:11:59,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849464397] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:11:59,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648324965] [2022-01-18 05:11:59,583 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 05:11:59,583 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:11:59,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:11:59,584 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) [2022-01-18 05:11:59,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-01-18 05:11:59,606 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 05:11:59,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:11:59,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:11:59,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:11:59,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:59,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:11:59,966 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:11:59,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648324965] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:11:59,966 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:11:59,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2022-01-18 05:11:59,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996458965] [2022-01-18 05:11:59,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:11:59,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 05:11:59,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:11:59,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 05:11:59,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-01-18 05:11:59,967 INFO L87 Difference]: Start difference. First operand 304 states and 911 transitions. Second operand has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:00,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:00,166 INFO L93 Difference]: Finished difference Result 434 states and 1258 transitions. [2022-01-18 05:12:00,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:00,166 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 05:12:00,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:00,167 INFO L225 Difference]: With dead ends: 434 [2022-01-18 05:12:00,167 INFO L226 Difference]: Without dead ends: 415 [2022-01-18 05:12:00,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2022-01-18 05:12:00,167 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 100 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:00,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 102 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:00,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2022-01-18 05:12:00,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 296. [2022-01-18 05:12:00,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 295 states have (on average 3.013559322033898) internal successors, (889), 295 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:00,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 889 transitions. [2022-01-18 05:12:00,171 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 889 transitions. Word has length 18 [2022-01-18 05:12:00,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:00,171 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 889 transitions. [2022-01-18 05:12:00,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:00,171 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 889 transitions. [2022-01-18 05:12:00,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:00,172 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:00,172 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:00,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-01-18 05:12:00,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2022-01-18 05:12:00,375 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:00,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:00,375 INFO L85 PathProgramCache]: Analyzing trace with hash 848157667, now seen corresponding path program 19 times [2022-01-18 05:12:00,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:00,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627107354] [2022-01-18 05:12:00,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:00,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:00,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:00,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:00,439 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:00,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627107354] [2022-01-18 05:12:00,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627107354] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:00,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96090423] [2022-01-18 05:12:00,440 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 05:12:00,440 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:00,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:00,440 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) [2022-01-18 05:12:00,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-01-18 05:12:00,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:00,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:12:00,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:00,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:00,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:00,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:00,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96090423] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:12:00,769 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:12:00,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 15 [2022-01-18 05:12:00,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208744628] [2022-01-18 05:12:00,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:12:00,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 05:12:00,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:00,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 05:12:00,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-01-18 05:12:00,770 INFO L87 Difference]: Start difference. First operand 296 states and 889 transitions. Second operand has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:01,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:01,014 INFO L93 Difference]: Finished difference Result 468 states and 1339 transitions. [2022-01-18 05:12:01,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:01,014 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 [2022-01-18 05:12:01,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:01,015 INFO L225 Difference]: With dead ends: 468 [2022-01-18 05:12:01,015 INFO L226 Difference]: Without dead ends: 449 [2022-01-18 05:12:01,015 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-01-18 05:12:01,015 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 136 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:01,015 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 99 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:01,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2022-01-18 05:12:01,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 302. [2022-01-18 05:12:01,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 301 states have (on average 3.0232558139534884) internal successors, (910), 301 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:01,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 910 transitions. [2022-01-18 05:12:01,019 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 910 transitions. Word has length 18 [2022-01-18 05:12:01,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:01,020 INFO L470 AbstractCegarLoop]: Abstraction has 302 states and 910 transitions. [2022-01-18 05:12:01,020 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) [2022-01-18 05:12:01,020 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 910 transitions. [2022-01-18 05:12:01,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:01,020 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:01,020 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:01,036 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-01-18 05:12:01,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:01,221 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:01,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:01,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1219249607, now seen corresponding path program 20 times [2022-01-18 05:12:01,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:01,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37717100] [2022-01-18 05:12:01,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:01,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:01,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:01,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:01,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:01,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37717100] [2022-01-18 05:12:01,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37717100] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:01,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710998686] [2022-01-18 05:12:01,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 05:12:01,284 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:01,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:01,285 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) [2022-01-18 05:12:01,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-01-18 05:12:01,308 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:12:01,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:12:01,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:12:01,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:01,419 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:01,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:01,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:01,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710998686] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:12:01,686 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:12:01,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-01-18 05:12:01,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789677853] [2022-01-18 05:12:01,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:12:01,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 05:12:01,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:01,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 05:12:01,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2022-01-18 05:12:01,687 INFO L87 Difference]: Start difference. First operand 302 states and 910 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:01,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:01,923 INFO L93 Difference]: Finished difference Result 479 states and 1352 transitions. [2022-01-18 05:12:01,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:01,924 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 05:12:01,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:01,924 INFO L225 Difference]: With dead ends: 479 [2022-01-18 05:12:01,924 INFO L226 Difference]: Without dead ends: 460 [2022-01-18 05:12:01,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2022-01-18 05:12:01,925 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 162 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:01,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 102 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:01,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2022-01-18 05:12:01,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 306. [2022-01-18 05:12:01,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 305 states have (on average 3.036065573770492) internal successors, (926), 305 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:01,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 926 transitions. [2022-01-18 05:12:01,929 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 926 transitions. Word has length 18 [2022-01-18 05:12:01,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:01,929 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 926 transitions. [2022-01-18 05:12:01,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:01,929 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 926 transitions. [2022-01-18 05:12:01,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:01,929 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:01,929 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:01,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-01-18 05:12:02,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:02,130 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:02,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:02,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1058029667, now seen corresponding path program 21 times [2022-01-18 05:12:02,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:02,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264374394] [2022-01-18 05:12:02,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:02,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:02,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:02,189 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:02,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:02,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264374394] [2022-01-18 05:12:02,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264374394] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:02,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413810095] [2022-01-18 05:12:02,190 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:12:02,190 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:02,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:02,191 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) [2022-01-18 05:12:02,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-01-18 05:12:02,213 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 05:12:02,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:12:02,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:12:02,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:02,320 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:02,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:02,610 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:02,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413810095] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:02,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 05:12:02,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 16 [2022-01-18 05:12:02,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146108747] [2022-01-18 05:12:02,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:12:02,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:12:02,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:02,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:12:02,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-01-18 05:12:02,611 INFO L87 Difference]: Start difference. First operand 306 states and 926 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:02,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:02,770 INFO L93 Difference]: Finished difference Result 442 states and 1266 transitions. [2022-01-18 05:12:02,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:02,771 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 [2022-01-18 05:12:02,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:02,771 INFO L225 Difference]: With dead ends: 442 [2022-01-18 05:12:02,771 INFO L226 Difference]: Without dead ends: 419 [2022-01-18 05:12:02,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2022-01-18 05:12:02,772 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 87 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:02,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 53 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:02,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2022-01-18 05:12:02,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 308. [2022-01-18 05:12:02,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 307 states have (on average 3.019543973941368) internal successors, (927), 307 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:02,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 927 transitions. [2022-01-18 05:12:02,776 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 927 transitions. Word has length 18 [2022-01-18 05:12:02,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:02,776 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 927 transitions. [2022-01-18 05:12:02,776 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) [2022-01-18 05:12:02,776 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 927 transitions. [2022-01-18 05:12:02,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:02,776 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:02,776 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:02,794 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-01-18 05:12:03,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:03,002 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:03,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:03,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1745323105, now seen corresponding path program 22 times [2022-01-18 05:12:03,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:03,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014911114] [2022-01-18 05:12:03,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:03,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:03,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:03,056 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:03,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:03,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014911114] [2022-01-18 05:12:03,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014911114] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:03,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414624174] [2022-01-18 05:12:03,056 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 05:12:03,056 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:03,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:03,057 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) [2022-01-18 05:12:03,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-01-18 05:12:03,079 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 05:12:03,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:12:03,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:12:03,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:03,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:03,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:03,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:03,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414624174] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:12:03,369 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:12:03,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 14 [2022-01-18 05:12:03,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235388863] [2022-01-18 05:12:03,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:12:03,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 05:12:03,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:03,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 05:12:03,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-01-18 05:12:03,369 INFO L87 Difference]: Start difference. First operand 308 states and 927 transitions. Second operand has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:03,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:03,589 INFO L93 Difference]: Finished difference Result 535 states and 1530 transitions. [2022-01-18 05:12:03,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:03,589 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 05:12:03,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:03,590 INFO L225 Difference]: With dead ends: 535 [2022-01-18 05:12:03,590 INFO L226 Difference]: Without dead ends: 516 [2022-01-18 05:12:03,590 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2022-01-18 05:12:03,590 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 111 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:03,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 129 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 05:12:03,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2022-01-18 05:12:03,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 303. [2022-01-18 05:12:03,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 302 states have (on average 3.0264900662251657) internal successors, (914), 302 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:03,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 914 transitions. [2022-01-18 05:12:03,594 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 914 transitions. Word has length 18 [2022-01-18 05:12:03,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:03,594 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 914 transitions. [2022-01-18 05:12:03,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:03,594 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 914 transitions. [2022-01-18 05:12:03,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:03,595 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:03,595 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:03,610 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-01-18 05:12:03,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2022-01-18 05:12:03,795 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:03,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:03,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1457536671, now seen corresponding path program 23 times [2022-01-18 05:12:03,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:03,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783578539] [2022-01-18 05:12:03,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:03,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:03,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:03,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:03,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:03,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783578539] [2022-01-18 05:12:03,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783578539] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:03,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089326329] [2022-01-18 05:12:03,863 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 05:12:03,863 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:03,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:03,864 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) [2022-01-18 05:12:03,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-01-18 05:12:03,888 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:12:03,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:12:03,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:12:03,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:04,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:04,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:04,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:04,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2089326329] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:12:04,215 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:12:04,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2022-01-18 05:12:04,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666576317] [2022-01-18 05:12:04,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:12:04,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 05:12:04,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:04,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 05:12:04,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-01-18 05:12:04,216 INFO L87 Difference]: Start difference. First operand 303 states and 914 transitions. Second operand has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:04,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:04,387 INFO L93 Difference]: Finished difference Result 537 states and 1559 transitions. [2022-01-18 05:12:04,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:04,388 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 05:12:04,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:04,388 INFO L225 Difference]: With dead ends: 537 [2022-01-18 05:12:04,388 INFO L226 Difference]: Without dead ends: 518 [2022-01-18 05:12:04,389 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-01-18 05:12:04,389 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 97 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:04,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 115 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:04,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2022-01-18 05:12:04,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 307. [2022-01-18 05:12:04,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 306 states have (on average 3.052287581699346) internal successors, (934), 306 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:04,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 934 transitions. [2022-01-18 05:12:04,393 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 934 transitions. Word has length 18 [2022-01-18 05:12:04,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:04,393 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 934 transitions. [2022-01-18 05:12:04,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:04,393 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 934 transitions. [2022-01-18 05:12:04,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:04,394 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:04,394 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:04,409 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-01-18 05:12:04,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2022-01-18 05:12:04,594 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:04,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:04,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1480133219, now seen corresponding path program 24 times [2022-01-18 05:12:04,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:04,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321007552] [2022-01-18 05:12:04,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:04,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:04,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:04,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:04,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:04,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321007552] [2022-01-18 05:12:04,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321007552] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:04,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827843538] [2022-01-18 05:12:04,639 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 05:12:04,639 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:04,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:04,640 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:12:04,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-01-18 05:12:04,662 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 05:12:04,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:12:04,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:12:04,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:04,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:04,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:04,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:04,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827843538] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:12:04,962 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:12:04,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 11 [2022-01-18 05:12:04,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345085308] [2022-01-18 05:12:04,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:12:04,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 05:12:04,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:04,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 05:12:04,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:12:04,962 INFO L87 Difference]: Start difference. First operand 307 states and 934 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:05,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:05,108 INFO L93 Difference]: Finished difference Result 500 states and 1473 transitions. [2022-01-18 05:12:05,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:05,108 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 05:12:05,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:05,109 INFO L225 Difference]: With dead ends: 500 [2022-01-18 05:12:05,109 INFO L226 Difference]: Without dead ends: 481 [2022-01-18 05:12:05,109 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2022-01-18 05:12:05,109 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 92 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:05,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 75 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:05,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2022-01-18 05:12:05,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 299. [2022-01-18 05:12:05,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 298 states have (on average 3.0134228187919465) internal successors, (898), 298 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:05,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 898 transitions. [2022-01-18 05:12:05,113 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 898 transitions. Word has length 18 [2022-01-18 05:12:05,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:05,113 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 898 transitions. [2022-01-18 05:12:05,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:05,114 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 898 transitions. [2022-01-18 05:12:05,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:05,114 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:05,114 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:05,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-01-18 05:12:05,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2022-01-18 05:12:05,327 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:05,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:05,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1632865539, now seen corresponding path program 25 times [2022-01-18 05:12:05,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:05,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163649394] [2022-01-18 05:12:05,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:05,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:05,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:05,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:05,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:05,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163649394] [2022-01-18 05:12:05,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163649394] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:05,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923777326] [2022-01-18 05:12:05,389 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 05:12:05,389 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:05,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:05,390 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) [2022-01-18 05:12:05,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:05,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:12:05,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:05,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-01-18 05:12:05,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:05,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:05,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:05,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923777326] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:12:05,767 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:12:05,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 15 [2022-01-18 05:12:05,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581582771] [2022-01-18 05:12:05,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:12:05,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 05:12:05,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:05,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 05:12:05,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-01-18 05:12:05,768 INFO L87 Difference]: Start difference. First operand 299 states and 898 transitions. Second operand has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:05,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:05,962 INFO L93 Difference]: Finished difference Result 506 states and 1446 transitions. [2022-01-18 05:12:05,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:05,962 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 [2022-01-18 05:12:05,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:05,963 INFO L225 Difference]: With dead ends: 506 [2022-01-18 05:12:05,963 INFO L226 Difference]: Without dead ends: 487 [2022-01-18 05:12:05,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2022-01-18 05:12:05,963 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 136 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:05,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 108 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:05,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2022-01-18 05:12:05,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 305. [2022-01-18 05:12:05,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 304 states have (on average 3.0427631578947367) internal successors, (925), 304 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:05,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 925 transitions. [2022-01-18 05:12:05,967 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 925 transitions. Word has length 18 [2022-01-18 05:12:05,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:05,967 INFO L470 AbstractCegarLoop]: Abstraction has 305 states and 925 transitions. [2022-01-18 05:12:05,968 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) [2022-01-18 05:12:05,968 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 925 transitions. [2022-01-18 05:12:05,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:05,968 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:05,968 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:05,983 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-01-18 05:12:06,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2022-01-18 05:12:06,168 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:06,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:06,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1471645599, now seen corresponding path program 26 times [2022-01-18 05:12:06,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:06,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692109175] [2022-01-18 05:12:06,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:06,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:06,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:06,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:06,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:06,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692109175] [2022-01-18 05:12:06,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692109175] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:06,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097487579] [2022-01-18 05:12:06,227 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 05:12:06,227 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:06,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:06,228 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) [2022-01-18 05:12:06,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-01-18 05:12:06,251 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:12:06,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:12:06,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:12:06,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:06,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:06,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:06,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:06,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097487579] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:06,667 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 05:12:06,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 15 [2022-01-18 05:12:06,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431472927] [2022-01-18 05:12:06,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:12:06,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:12:06,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:06,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:12:06,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-01-18 05:12:06,668 INFO L87 Difference]: Start difference. First operand 305 states and 925 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:06,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:06,868 INFO L93 Difference]: Finished difference Result 494 states and 1406 transitions. [2022-01-18 05:12:06,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:06,868 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 [2022-01-18 05:12:06,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:06,869 INFO L225 Difference]: With dead ends: 494 [2022-01-18 05:12:06,869 INFO L226 Difference]: Without dead ends: 471 [2022-01-18 05:12:06,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2022-01-18 05:12:06,869 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 93 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:06,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 61 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:06,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2022-01-18 05:12:06,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 307. [2022-01-18 05:12:06,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 306 states have (on average 3.026143790849673) internal successors, (926), 306 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:06,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 926 transitions. [2022-01-18 05:12:06,873 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 926 transitions. Word has length 18 [2022-01-18 05:12:06,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:06,873 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 926 transitions. [2022-01-18 05:12:06,874 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) [2022-01-18 05:12:06,874 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 926 transitions. [2022-01-18 05:12:06,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:06,874 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:06,874 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:06,890 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-01-18 05:12:07,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:07,074 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:07,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:07,075 INFO L85 PathProgramCache]: Analyzing trace with hash -529005113, now seen corresponding path program 27 times [2022-01-18 05:12:07,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:07,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070738771] [2022-01-18 05:12:07,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:07,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:07,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:07,141 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:07,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:07,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070738771] [2022-01-18 05:12:07,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070738771] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:07,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172823956] [2022-01-18 05:12:07,141 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:12:07,141 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:07,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:07,142 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) [2022-01-18 05:12:07,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-01-18 05:12:07,166 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 05:12:07,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:12:07,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:12:07,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:07,287 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:07,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:07,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:07,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172823956] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:12:07,553 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:12:07,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-01-18 05:12:07,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315853330] [2022-01-18 05:12:07,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:12:07,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 05:12:07,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:07,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 05:12:07,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2022-01-18 05:12:07,554 INFO L87 Difference]: Start difference. First operand 307 states and 926 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:07,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:07,804 INFO L93 Difference]: Finished difference Result 509 states and 1449 transitions. [2022-01-18 05:12:07,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:07,804 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 05:12:07,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:07,805 INFO L225 Difference]: With dead ends: 509 [2022-01-18 05:12:07,805 INFO L226 Difference]: Without dead ends: 490 [2022-01-18 05:12:07,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2022-01-18 05:12:07,805 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 185 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:07,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 151 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 05:12:07,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2022-01-18 05:12:07,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 304. [2022-01-18 05:12:07,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 303 states have (on average 3.046204620462046) internal successors, (923), 303 states have internal predecessors, (923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:07,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 923 transitions. [2022-01-18 05:12:07,809 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 923 transitions. Word has length 18 [2022-01-18 05:12:07,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:07,809 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 923 transitions. [2022-01-18 05:12:07,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:07,809 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 923 transitions. [2022-01-18 05:12:07,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:07,810 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:07,810 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:07,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-01-18 05:12:08,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:08,010 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:08,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:08,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1617201991, now seen corresponding path program 28 times [2022-01-18 05:12:08,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:08,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039820520] [2022-01-18 05:12:08,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:08,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:08,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:08,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:08,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:08,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039820520] [2022-01-18 05:12:08,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039820520] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:08,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567024415] [2022-01-18 05:12:08,062 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 05:12:08,062 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:08,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:08,063 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) [2022-01-18 05:12:08,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-01-18 05:12:08,096 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 05:12:08,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:12:08,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:12:08,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:08,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:08,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:08,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:08,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567024415] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:12:08,478 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:12:08,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2022-01-18 05:12:08,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956556105] [2022-01-18 05:12:08,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:12:08,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-18 05:12:08,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:08,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-18 05:12:08,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-01-18 05:12:08,478 INFO L87 Difference]: Start difference. First operand 304 states and 923 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:08,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:08,632 INFO L93 Difference]: Finished difference Result 490 states and 1420 transitions. [2022-01-18 05:12:08,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:08,632 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 05:12:08,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:08,633 INFO L225 Difference]: With dead ends: 490 [2022-01-18 05:12:08,633 INFO L226 Difference]: Without dead ends: 471 [2022-01-18 05:12:08,633 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2022-01-18 05:12:08,633 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 87 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:08,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 103 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:08,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2022-01-18 05:12:08,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 300. [2022-01-18 05:12:08,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 299 states have (on average 3.020066889632107) internal successors, (903), 299 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:08,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 903 transitions. [2022-01-18 05:12:08,637 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 903 transitions. Word has length 18 [2022-01-18 05:12:08,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:08,637 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 903 transitions. [2022-01-18 05:12:08,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:08,637 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 903 transitions. [2022-01-18 05:12:08,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:08,638 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:08,638 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:08,653 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2022-01-18 05:12:08,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable139 [2022-01-18 05:12:08,838 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:08,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:08,838 INFO L85 PathProgramCache]: Analyzing trace with hash 612159843, now seen corresponding path program 29 times [2022-01-18 05:12:08,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:08,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579910172] [2022-01-18 05:12:08,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:08,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:08,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:08,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:08,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:08,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579910172] [2022-01-18 05:12:08,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579910172] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:08,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706803780] [2022-01-18 05:12:08,887 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 05:12:08,887 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:08,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:08,888 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) [2022-01-18 05:12:08,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-01-18 05:12:08,910 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:12:08,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:12:08,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:12:08,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:09,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:09,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:09,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:09,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706803780] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:09,331 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 05:12:09,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 14 [2022-01-18 05:12:09,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070871989] [2022-01-18 05:12:09,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:12:09,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:12:09,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:09,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:12:09,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-01-18 05:12:09,331 INFO L87 Difference]: Start difference. First operand 300 states and 903 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:09,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:09,519 INFO L93 Difference]: Finished difference Result 447 states and 1285 transitions. [2022-01-18 05:12:09,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:09,520 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 [2022-01-18 05:12:09,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:09,520 INFO L225 Difference]: With dead ends: 447 [2022-01-18 05:12:09,520 INFO L226 Difference]: Without dead ends: 424 [2022-01-18 05:12:09,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2022-01-18 05:12:09,521 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 69 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:09,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 61 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:09,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2022-01-18 05:12:09,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 308. [2022-01-18 05:12:09,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 307 states have (on average 3.013029315960912) internal successors, (925), 307 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:09,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 925 transitions. [2022-01-18 05:12:09,525 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 925 transitions. Word has length 18 [2022-01-18 05:12:09,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:09,525 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 925 transitions. [2022-01-18 05:12:09,525 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) [2022-01-18 05:12:09,525 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 925 transitions. [2022-01-18 05:12:09,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:09,525 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:09,525 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:09,543 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-01-18 05:12:09,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:09,726 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:09,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:09,726 INFO L85 PathProgramCache]: Analyzing trace with hash -565956577, now seen corresponding path program 30 times [2022-01-18 05:12:09,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:09,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798602797] [2022-01-18 05:12:09,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:09,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:09,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:09,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:09,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:09,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798602797] [2022-01-18 05:12:09,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798602797] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:09,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907263451] [2022-01-18 05:12:09,788 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 05:12:09,788 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:09,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:09,789 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) [2022-01-18 05:12:09,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-01-18 05:12:09,813 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 05:12:09,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:12:09,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:12:09,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:09,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:09,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:10,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:10,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907263451] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:12:10,201 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:12:10,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2022-01-18 05:12:10,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215082131] [2022-01-18 05:12:10,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:12:10,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 05:12:10,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:10,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 05:12:10,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-01-18 05:12:10,202 INFO L87 Difference]: Start difference. First operand 308 states and 925 transitions. Second operand has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:10,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:10,405 INFO L93 Difference]: Finished difference Result 431 states and 1255 transitions. [2022-01-18 05:12:10,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:10,406 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 05:12:10,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:10,406 INFO L225 Difference]: With dead ends: 431 [2022-01-18 05:12:10,406 INFO L226 Difference]: Without dead ends: 412 [2022-01-18 05:12:10,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2022-01-18 05:12:10,407 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 77 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:10,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 111 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:10,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2022-01-18 05:12:10,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 299. [2022-01-18 05:12:10,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 298 states have (on average 3.0134228187919465) internal successors, (898), 298 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:10,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 898 transitions. [2022-01-18 05:12:10,410 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 898 transitions. Word has length 18 [2022-01-18 05:12:10,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:10,410 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 898 transitions. [2022-01-18 05:12:10,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:10,410 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 898 transitions. [2022-01-18 05:12:10,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:10,411 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:10,411 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:10,426 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-01-18 05:12:10,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:10,611 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:10,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:10,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1009718582, now seen corresponding path program 4 times [2022-01-18 05:12:10,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:10,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426413638] [2022-01-18 05:12:10,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:10,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:10,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:10,647 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:10,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:10,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426413638] [2022-01-18 05:12:10,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426413638] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:12:10,647 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:12:10,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:12:10,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759963030] [2022-01-18 05:12:10,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:12:10,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:12:10,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:10,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:12:10,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:12:10,648 INFO L87 Difference]: Start difference. First operand 299 states and 898 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:10,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:10,728 INFO L93 Difference]: Finished difference Result 429 states and 1249 transitions. [2022-01-18 05:12:10,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 05:12:10,729 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 05:12:10,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:10,729 INFO L225 Difference]: With dead ends: 429 [2022-01-18 05:12:10,729 INFO L226 Difference]: Without dead ends: 358 [2022-01-18 05:12:10,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:12:10,729 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 62 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:10,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 46 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:10,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2022-01-18 05:12:10,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 294. [2022-01-18 05:12:10,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 293 states have (on average 3.0) internal successors, (879), 293 states have internal predecessors, (879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:10,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 879 transitions. [2022-01-18 05:12:10,733 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 879 transitions. Word has length 18 [2022-01-18 05:12:10,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:10,733 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 879 transitions. [2022-01-18 05:12:10,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:10,733 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 879 transitions. [2022-01-18 05:12:10,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:10,734 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:10,734 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:10,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2022-01-18 05:12:10,734 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:10,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:10,734 INFO L85 PathProgramCache]: Analyzing trace with hash 545103819, now seen corresponding path program 31 times [2022-01-18 05:12:10,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:10,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189116068] [2022-01-18 05:12:10,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:10,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:10,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:10,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:10,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:10,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189116068] [2022-01-18 05:12:10,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189116068] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:10,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570370732] [2022-01-18 05:12:10,779 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 05:12:10,779 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:10,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:10,780 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) [2022-01-18 05:12:10,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-01-18 05:12:10,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:10,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:12:10,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:10,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:10,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:11,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:11,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570370732] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:12:11,086 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:12:11,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2022-01-18 05:12:11,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299476077] [2022-01-18 05:12:11,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:12:11,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 05:12:11,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:11,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 05:12:11,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-01-18 05:12:11,086 INFO L87 Difference]: Start difference. First operand 294 states and 879 transitions. Second operand has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:11,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:11,246 INFO L93 Difference]: Finished difference Result 567 states and 1606 transitions. [2022-01-18 05:12:11,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:11,247 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 05:12:11,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:11,247 INFO L225 Difference]: With dead ends: 567 [2022-01-18 05:12:11,247 INFO L226 Difference]: Without dead ends: 548 [2022-01-18 05:12:11,248 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 30 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-01-18 05:12:11,248 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 116 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:11,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 102 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:11,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2022-01-18 05:12:11,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 301. [2022-01-18 05:12:11,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 300 states have (on average 3.0233333333333334) internal successors, (907), 300 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:11,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 907 transitions. [2022-01-18 05:12:11,252 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 907 transitions. Word has length 18 [2022-01-18 05:12:11,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:11,252 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 907 transitions. [2022-01-18 05:12:11,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:11,253 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 907 transitions. [2022-01-18 05:12:11,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:11,253 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:11,253 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:11,271 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2022-01-18 05:12:11,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable143 [2022-01-18 05:12:11,469 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:11,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:11,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1644678225, now seen corresponding path program 32 times [2022-01-18 05:12:11,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:11,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531942535] [2022-01-18 05:12:11,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:11,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:11,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:11,513 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:11,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:11,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531942535] [2022-01-18 05:12:11,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531942535] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:11,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239051726] [2022-01-18 05:12:11,513 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 05:12:11,513 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:11,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:11,514 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) [2022-01-18 05:12:11,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-01-18 05:12:11,545 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:12:11,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:12:11,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:12:11,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:11,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:11,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:11,841 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:11,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239051726] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:12:11,842 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:12:11,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 11 [2022-01-18 05:12:11,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165078120] [2022-01-18 05:12:11,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:12:11,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 05:12:11,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:11,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 05:12:11,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:12:11,842 INFO L87 Difference]: Start difference. First operand 301 states and 907 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:12,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:12,009 INFO L93 Difference]: Finished difference Result 579 states and 1645 transitions. [2022-01-18 05:12:12,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:12,009 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 05:12:12,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:12,010 INFO L225 Difference]: With dead ends: 579 [2022-01-18 05:12:12,010 INFO L226 Difference]: Without dead ends: 560 [2022-01-18 05:12:12,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2022-01-18 05:12:12,010 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 92 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:12,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 110 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:12,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2022-01-18 05:12:12,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 305. [2022-01-18 05:12:12,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 304 states have (on average 3.049342105263158) internal successors, (927), 304 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:12,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 927 transitions. [2022-01-18 05:12:12,015 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 927 transitions. Word has length 18 [2022-01-18 05:12:12,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:12,015 INFO L470 AbstractCegarLoop]: Abstraction has 305 states and 927 transitions. [2022-01-18 05:12:12,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:12,015 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 927 transitions. [2022-01-18 05:12:12,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:12,015 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:12,015 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:12,031 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2022-01-18 05:12:12,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable144 [2022-01-18 05:12:12,216 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:12,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:12,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1622081677, now seen corresponding path program 33 times [2022-01-18 05:12:12,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:12,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398994299] [2022-01-18 05:12:12,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:12,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:12,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:12,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:12,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:12,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398994299] [2022-01-18 05:12:12,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398994299] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:12,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105356269] [2022-01-18 05:12:12,265 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:12:12,265 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:12,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:12,267 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) [2022-01-18 05:12:12,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-01-18 05:12:12,288 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 05:12:12,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:12:12,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:12:12,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:12,395 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:12,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:12,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:12,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105356269] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:12:12,603 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:12:12,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2022-01-18 05:12:12,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356640961] [2022-01-18 05:12:12,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:12:12,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 05:12:12,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:12,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 05:12:12,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-01-18 05:12:12,604 INFO L87 Difference]: Start difference. First operand 305 states and 927 transitions. Second operand has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:12,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:12,769 INFO L93 Difference]: Finished difference Result 588 states and 1668 transitions. [2022-01-18 05:12:12,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:12,770 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 05:12:12,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:12,771 INFO L225 Difference]: With dead ends: 588 [2022-01-18 05:12:12,771 INFO L226 Difference]: Without dead ends: 569 [2022-01-18 05:12:12,771 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2022-01-18 05:12:12,771 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 92 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:12,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 110 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:12,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2022-01-18 05:12:12,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 294. [2022-01-18 05:12:12,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 293 states have (on average 3.0) internal successors, (879), 293 states have internal predecessors, (879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:12,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 879 transitions. [2022-01-18 05:12:12,782 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 879 transitions. Word has length 18 [2022-01-18 05:12:12,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:12,782 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 879 transitions. [2022-01-18 05:12:12,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:12,782 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 879 transitions. [2022-01-18 05:12:12,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:12,783 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:12,783 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:12,798 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2022-01-18 05:12:12,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable145 [2022-01-18 05:12:12,983 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:12,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:12,984 INFO L85 PathProgramCache]: Analyzing trace with hash -584691793, now seen corresponding path program 34 times [2022-01-18 05:12:12,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:12,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124837836] [2022-01-18 05:12:12,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:12,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:12,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:13,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:13,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:13,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124837836] [2022-01-18 05:12:13,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124837836] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:13,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292317153] [2022-01-18 05:12:13,040 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 05:12:13,040 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:13,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:13,041 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) [2022-01-18 05:12:13,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-01-18 05:12:13,063 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 05:12:13,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:12:13,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:12:13,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:13,163 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:13,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:13,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:13,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292317153] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:12:13,337 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:12:13,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 15 [2022-01-18 05:12:13,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374498378] [2022-01-18 05:12:13,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:12:13,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 05:12:13,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:13,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 05:12:13,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-01-18 05:12:13,337 INFO L87 Difference]: Start difference. First operand 294 states and 879 transitions. Second operand has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:13,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:13,589 INFO L93 Difference]: Finished difference Result 648 states and 1820 transitions. [2022-01-18 05:12:13,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:13,589 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 05:12:13,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:13,590 INFO L225 Difference]: With dead ends: 648 [2022-01-18 05:12:13,590 INFO L226 Difference]: Without dead ends: 629 [2022-01-18 05:12:13,590 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2022-01-18 05:12:13,590 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 127 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:13,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 147 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 05:12:13,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2022-01-18 05:12:13,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 298. [2022-01-18 05:12:13,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 297 states have (on average 2.993265993265993) internal successors, (889), 297 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:13,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 889 transitions. [2022-01-18 05:12:13,595 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 889 transitions. Word has length 18 [2022-01-18 05:12:13,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:13,595 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 889 transitions. [2022-01-18 05:12:13,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:13,595 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 889 transitions. [2022-01-18 05:12:13,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:13,595 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:13,595 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:13,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-01-18 05:12:13,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable146 [2022-01-18 05:12:13,802 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:13,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:13,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1531190667, now seen corresponding path program 35 times [2022-01-18 05:12:13,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:13,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112561679] [2022-01-18 05:12:13,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:13,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:13,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:13,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:13,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:13,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112561679] [2022-01-18 05:12:13,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112561679] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:13,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397583397] [2022-01-18 05:12:13,856 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 05:12:13,856 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:13,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:13,857 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) [2022-01-18 05:12:13,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-01-18 05:12:13,879 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:12:13,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:12:13,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:12:13,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:13,989 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:13,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:14,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:14,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1397583397] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:14,271 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 05:12:14,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 16 [2022-01-18 05:12:14,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146042595] [2022-01-18 05:12:14,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:12:14,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:12:14,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:14,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:12:14,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-01-18 05:12:14,272 INFO L87 Difference]: Start difference. First operand 298 states and 889 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:14,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:14,433 INFO L93 Difference]: Finished difference Result 606 states and 1708 transitions. [2022-01-18 05:12:14,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:14,434 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 [2022-01-18 05:12:14,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:14,434 INFO L225 Difference]: With dead ends: 606 [2022-01-18 05:12:14,434 INFO L226 Difference]: Without dead ends: 583 [2022-01-18 05:12:14,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2022-01-18 05:12:14,435 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 93 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:14,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 63 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:14,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2022-01-18 05:12:14,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 306. [2022-01-18 05:12:14,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 305 states have (on average 2.9868852459016395) internal successors, (911), 305 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:14,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 911 transitions. [2022-01-18 05:12:14,439 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 911 transitions. Word has length 18 [2022-01-18 05:12:14,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:14,439 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 911 transitions. [2022-01-18 05:12:14,439 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) [2022-01-18 05:12:14,439 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 911 transitions. [2022-01-18 05:12:14,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:14,440 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:14,440 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:14,456 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2022-01-18 05:12:14,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable147 [2022-01-18 05:12:14,640 INFO L402 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:14,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:14,640 INFO L85 PathProgramCache]: Analyzing trace with hash -2123383751, now seen corresponding path program 36 times [2022-01-18 05:12:14,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:14,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484158070] [2022-01-18 05:12:14,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:14,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:14,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:14,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:14,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:14,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484158070] [2022-01-18 05:12:14,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484158070] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:14,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517218750] [2022-01-18 05:12:14,700 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 05:12:14,700 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:14,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:14,701 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) [2022-01-18 05:12:14,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-01-18 05:12:14,723 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 05:12:14,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:12:14,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:12:14,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:14,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:14,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:15,069 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:15,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517218750] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:12:15,069 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:12:15,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2022-01-18 05:12:15,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108802431] [2022-01-18 05:12:15,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:12:15,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 05:12:15,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:15,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 05:12:15,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-01-18 05:12:15,070 INFO L87 Difference]: Start difference. First operand 306 states and 911 transitions. Second operand has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:15,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:15,327 INFO L93 Difference]: Finished difference Result 590 states and 1678 transitions. [2022-01-18 05:12:15,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:15,328 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 [2022-01-18 05:12:15,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:15,329 INFO L225 Difference]: With dead ends: 590 [2022-01-18 05:12:15,329 INFO L226 Difference]: Without dead ends: 571 [2022-01-18 05:12:15,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2022-01-18 05:12:15,329 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 95 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:15,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 137 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:15,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2022-01-18 05:12:15,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 294. [2022-01-18 05:12:15,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 293 states have (on average 3.0) internal successors, (879), 293 states have internal predecessors, (879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:15,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 879 transitions. [2022-01-18 05:12:15,334 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 879 transitions. Word has length 18 [2022-01-18 05:12:15,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:15,334 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 879 transitions. [2022-01-18 05:12:15,334 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) [2022-01-18 05:12:15,334 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 879 transitions. [2022-01-18 05:12:15,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:15,335 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:15,335 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:15,351 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2022-01-18 05:12:15,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable148 [2022-01-18 05:12:15,535 INFO L402 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:15,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:15,536 INFO L85 PathProgramCache]: Analyzing trace with hash -921911216, now seen corresponding path program 5 times [2022-01-18 05:12:15,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:15,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263351330] [2022-01-18 05:12:15,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:15,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:15,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:15,565 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:15,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:15,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263351330] [2022-01-18 05:12:15,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263351330] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:15,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419825388] [2022-01-18 05:12:15,566 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 05:12:15,566 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:15,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:15,567 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) [2022-01-18 05:12:15,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-01-18 05:12:15,592 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:12:15,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:12:15,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:12:15,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:15,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:15,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:15,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:15,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419825388] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:12:15,697 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:12:15,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 10 [2022-01-18 05:12:15,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877390197] [2022-01-18 05:12:15,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:12:15,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 05:12:15,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:15,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 05:12:15,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:12:15,698 INFO L87 Difference]: Start difference. First operand 294 states and 879 transitions. Second operand has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:15,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:15,790 INFO L93 Difference]: Finished difference Result 448 states and 1287 transitions. [2022-01-18 05:12:15,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 05:12:15,790 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 05:12:15,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:15,791 INFO L225 Difference]: With dead ends: 448 [2022-01-18 05:12:15,791 INFO L226 Difference]: Without dead ends: 391 [2022-01-18 05:12:15,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-01-18 05:12:15,791 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 82 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:15,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 61 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:15,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2022-01-18 05:12:15,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 287. [2022-01-18 05:12:15,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 2.958041958041958) internal successors, (846), 286 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:15,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 846 transitions. [2022-01-18 05:12:15,795 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 846 transitions. Word has length 18 [2022-01-18 05:12:15,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:15,795 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 846 transitions. [2022-01-18 05:12:15,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:15,795 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 846 transitions. [2022-01-18 05:12:15,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:15,795 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:15,795 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:15,811 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2022-01-18 05:12:15,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable149 [2022-01-18 05:12:15,996 INFO L402 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:15,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:15,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1805940627, now seen corresponding path program 37 times [2022-01-18 05:12:15,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:15,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946874771] [2022-01-18 05:12:15,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:15,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:15,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:16,069 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:16,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:16,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946874771] [2022-01-18 05:12:16,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946874771] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:16,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287305887] [2022-01-18 05:12:16,070 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 05:12:16,070 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:16,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:16,071 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) [2022-01-18 05:12:16,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-01-18 05:12:16,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:16,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:12:16,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:16,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:16,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:16,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:16,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287305887] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:12:16,407 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:12:16,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 14 [2022-01-18 05:12:16,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292781317] [2022-01-18 05:12:16,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:12:16,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 05:12:16,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:16,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 05:12:16,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-01-18 05:12:16,407 INFO L87 Difference]: Start difference. First operand 287 states and 846 transitions. Second operand has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:16,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:16,589 INFO L93 Difference]: Finished difference Result 610 states and 1732 transitions. [2022-01-18 05:12:16,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:16,590 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 05:12:16,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:16,591 INFO L225 Difference]: With dead ends: 610 [2022-01-18 05:12:16,591 INFO L226 Difference]: Without dead ends: 591 [2022-01-18 05:12:16,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-01-18 05:12:16,591 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 133 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:16,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 93 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:16,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2022-01-18 05:12:16,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 293. [2022-01-18 05:12:16,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 292 states have (on average 2.98972602739726) internal successors, (873), 292 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:16,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 873 transitions. [2022-01-18 05:12:16,595 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 873 transitions. Word has length 18 [2022-01-18 05:12:16,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:16,595 INFO L470 AbstractCegarLoop]: Abstraction has 293 states and 873 transitions. [2022-01-18 05:12:16,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:16,596 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 873 transitions. [2022-01-18 05:12:16,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:16,596 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:16,596 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:16,611 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2022-01-18 05:12:16,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable150 [2022-01-18 05:12:16,796 INFO L402 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:16,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:16,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1644720687, now seen corresponding path program 38 times [2022-01-18 05:12:16,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:16,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357952408] [2022-01-18 05:12:16,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:16,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:16,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:16,851 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:16,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:16,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357952408] [2022-01-18 05:12:16,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357952408] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:16,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061682251] [2022-01-18 05:12:16,852 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 05:12:16,852 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:16,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:16,853 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) [2022-01-18 05:12:16,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-01-18 05:12:16,875 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:12:16,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:12:16,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:12:16,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:16,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:16,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:17,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:17,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061682251] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:17,264 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 05:12:17,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 14 [2022-01-18 05:12:17,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197663088] [2022-01-18 05:12:17,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:12:17,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:12:17,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:17,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:12:17,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-01-18 05:12:17,265 INFO L87 Difference]: Start difference. First operand 293 states and 873 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:17,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:17,460 INFO L93 Difference]: Finished difference Result 598 states and 1692 transitions. [2022-01-18 05:12:17,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:17,460 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 [2022-01-18 05:12:17,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:17,461 INFO L225 Difference]: With dead ends: 598 [2022-01-18 05:12:17,461 INFO L226 Difference]: Without dead ends: 575 [2022-01-18 05:12:17,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2022-01-18 05:12:17,461 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 95 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:17,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 74 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:17,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2022-01-18 05:12:17,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 295. [2022-01-18 05:12:17,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 294 states have (on average 2.9727891156462585) internal successors, (874), 294 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:17,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 874 transitions. [2022-01-18 05:12:17,466 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 874 transitions. Word has length 18 [2022-01-18 05:12:17,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:17,466 INFO L470 AbstractCegarLoop]: Abstraction has 295 states and 874 transitions. [2022-01-18 05:12:17,466 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) [2022-01-18 05:12:17,466 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 874 transitions. [2022-01-18 05:12:17,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:17,466 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:17,466 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:17,481 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2022-01-18 05:12:17,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:17,667 INFO L402 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:17,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:17,667 INFO L85 PathProgramCache]: Analyzing trace with hash -355930025, now seen corresponding path program 39 times [2022-01-18 05:12:17,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:17,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120918934] [2022-01-18 05:12:17,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:17,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:17,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:17,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:17,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:17,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120918934] [2022-01-18 05:12:17,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120918934] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:17,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512474005] [2022-01-18 05:12:17,725 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:12:17,725 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:17,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:17,726 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) [2022-01-18 05:12:17,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-01-18 05:12:17,748 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 05:12:17,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:12:17,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:12:17,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:17,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:17,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:18,151 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:18,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512474005] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:12:18,151 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:12:18,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 19 [2022-01-18 05:12:18,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905285644] [2022-01-18 05:12:18,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:12:18,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 05:12:18,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:18,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 05:12:18,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2022-01-18 05:12:18,152 INFO L87 Difference]: Start difference. First operand 295 states and 874 transitions. Second operand has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 19 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:18,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:18,350 INFO L93 Difference]: Finished difference Result 653 states and 1829 transitions. [2022-01-18 05:12:18,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:18,351 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 19 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 05:12:18,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:18,352 INFO L225 Difference]: With dead ends: 653 [2022-01-18 05:12:18,352 INFO L226 Difference]: Without dead ends: 634 [2022-01-18 05:12:18,352 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2022-01-18 05:12:18,352 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 236 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:18,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 111 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:18,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2022-01-18 05:12:18,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 292. [2022-01-18 05:12:18,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 291 states have (on average 2.993127147766323) internal successors, (871), 291 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:18,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 871 transitions. [2022-01-18 05:12:18,357 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 871 transitions. Word has length 18 [2022-01-18 05:12:18,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:18,357 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 871 transitions. [2022-01-18 05:12:18,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 19 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:18,357 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 871 transitions. [2022-01-18 05:12:18,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:18,357 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:18,357 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:18,372 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2022-01-18 05:12:18,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:18,558 INFO L402 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:18,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:18,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1790277079, now seen corresponding path program 40 times [2022-01-18 05:12:18,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:18,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884139406] [2022-01-18 05:12:18,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:18,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:18,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:18,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:18,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:18,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884139406] [2022-01-18 05:12:18,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884139406] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:18,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201490730] [2022-01-18 05:12:18,608 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 05:12:18,608 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:18,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:18,608 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) [2022-01-18 05:12:18,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-01-18 05:12:18,631 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 05:12:18,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:12:18,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:12:18,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:18,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:18,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:18,969 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:18,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201490730] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:12:18,970 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:12:18,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2022-01-18 05:12:18,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528199731] [2022-01-18 05:12:18,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:12:18,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 05:12:18,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:18,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 05:12:18,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-01-18 05:12:18,970 INFO L87 Difference]: Start difference. First operand 292 states and 871 transitions. Second operand has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:19,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:19,129 INFO L93 Difference]: Finished difference Result 634 states and 1800 transitions. [2022-01-18 05:12:19,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:19,130 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 05:12:19,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:19,130 INFO L225 Difference]: With dead ends: 634 [2022-01-18 05:12:19,130 INFO L226 Difference]: Without dead ends: 615 [2022-01-18 05:12:19,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2022-01-18 05:12:19,131 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 94 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:19,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 110 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:19,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2022-01-18 05:12:19,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 288. [2022-01-18 05:12:19,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 287 states have (on average 2.965156794425087) internal successors, (851), 287 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:19,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 851 transitions. [2022-01-18 05:12:19,135 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 851 transitions. Word has length 18 [2022-01-18 05:12:19,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:19,135 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 851 transitions. [2022-01-18 05:12:19,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:19,135 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 851 transitions. [2022-01-18 05:12:19,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:19,136 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:19,136 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:19,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-01-18 05:12:19,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153,44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:19,336 INFO L402 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:19,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:19,336 INFO L85 PathProgramCache]: Analyzing trace with hash 785234931, now seen corresponding path program 41 times [2022-01-18 05:12:19,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:19,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213351806] [2022-01-18 05:12:19,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:19,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:19,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:19,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:19,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:19,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213351806] [2022-01-18 05:12:19,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213351806] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:19,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094325470] [2022-01-18 05:12:19,387 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 05:12:19,387 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:19,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:19,388 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) [2022-01-18 05:12:19,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-01-18 05:12:19,409 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:12:19,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:12:19,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:12:19,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:19,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:19,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:19,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:19,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094325470] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:19,816 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 05:12:19,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 15 [2022-01-18 05:12:19,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398313498] [2022-01-18 05:12:19,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:12:19,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:12:19,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:19,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:12:19,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-01-18 05:12:19,817 INFO L87 Difference]: Start difference. First operand 288 states and 851 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:20,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:20,004 INFO L93 Difference]: Finished difference Result 606 states and 1702 transitions. [2022-01-18 05:12:20,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:20,004 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 [2022-01-18 05:12:20,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:20,005 INFO L225 Difference]: With dead ends: 606 [2022-01-18 05:12:20,005 INFO L226 Difference]: Without dead ends: 583 [2022-01-18 05:12:20,005 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2022-01-18 05:12:20,005 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 89 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:20,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 65 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:20,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2022-01-18 05:12:20,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 296. [2022-01-18 05:12:20,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 295 states have (on average 2.9593220338983053) internal successors, (873), 295 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:20,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 873 transitions. [2022-01-18 05:12:20,010 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 873 transitions. Word has length 18 [2022-01-18 05:12:20,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:20,010 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 873 transitions. [2022-01-18 05:12:20,010 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) [2022-01-18 05:12:20,010 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 873 transitions. [2022-01-18 05:12:20,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:20,010 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:20,010 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:20,026 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2022-01-18 05:12:20,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154,45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:20,211 INFO L402 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:20,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:20,211 INFO L85 PathProgramCache]: Analyzing trace with hash -392881489, now seen corresponding path program 42 times [2022-01-18 05:12:20,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:20,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522880103] [2022-01-18 05:12:20,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:20,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:20,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:20,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:20,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:20,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522880103] [2022-01-18 05:12:20,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522880103] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:20,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488958078] [2022-01-18 05:12:20,271 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 05:12:20,271 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:20,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:20,272 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) [2022-01-18 05:12:20,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-01-18 05:12:20,294 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 05:12:20,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:12:20,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:12:20,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:20,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:20,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:20,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:20,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488958078] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:12:20,655 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:12:20,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2022-01-18 05:12:20,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633388014] [2022-01-18 05:12:20,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:12:20,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 05:12:20,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:20,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 05:12:20,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-01-18 05:12:20,656 INFO L87 Difference]: Start difference. First operand 296 states and 873 transitions. Second operand has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:20,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:20,843 INFO L93 Difference]: Finished difference Result 590 states and 1672 transitions. [2022-01-18 05:12:20,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:20,843 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 05:12:20,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:20,844 INFO L225 Difference]: With dead ends: 590 [2022-01-18 05:12:20,844 INFO L226 Difference]: Without dead ends: 571 [2022-01-18 05:12:20,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-01-18 05:12:20,844 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 99 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:20,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 98 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:20,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2022-01-18 05:12:20,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 285. [2022-01-18 05:12:20,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 284 states have (on average 2.9507042253521125) internal successors, (838), 284 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:20,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 838 transitions. [2022-01-18 05:12:20,848 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 838 transitions. Word has length 18 [2022-01-18 05:12:20,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:20,848 INFO L470 AbstractCegarLoop]: Abstraction has 285 states and 838 transitions. [2022-01-18 05:12:20,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:20,848 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 838 transitions. [2022-01-18 05:12:20,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:20,849 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:20,851 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:20,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-01-18 05:12:21,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable155 [2022-01-18 05:12:21,066 INFO L402 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:21,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:21,067 INFO L85 PathProgramCache]: Analyzing trace with hash -2069781119, now seen corresponding path program 43 times [2022-01-18 05:12:21,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:21,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557507510] [2022-01-18 05:12:21,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:21,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:21,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:21,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:21,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:21,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557507510] [2022-01-18 05:12:21,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557507510] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:21,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366423774] [2022-01-18 05:12:21,128 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 05:12:21,128 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:21,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:21,130 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) [2022-01-18 05:12:21,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-01-18 05:12:21,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:21,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:12:21,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:21,257 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:21,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:21,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:21,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366423774] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:12:21,466 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:12:21,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 16 [2022-01-18 05:12:21,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106260470] [2022-01-18 05:12:21,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:12:21,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 05:12:21,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:21,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 05:12:21,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-01-18 05:12:21,467 INFO L87 Difference]: Start difference. First operand 285 states and 838 transitions. Second operand has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:21,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:21,726 INFO L93 Difference]: Finished difference Result 479 states and 1339 transitions. [2022-01-18 05:12:21,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:21,726 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 [2022-01-18 05:12:21,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:21,727 INFO L225 Difference]: With dead ends: 479 [2022-01-18 05:12:21,727 INFO L226 Difference]: Without dead ends: 460 [2022-01-18 05:12:21,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2022-01-18 05:12:21,727 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 175 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:21,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 105 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:21,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2022-01-18 05:12:21,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 289. [2022-01-18 05:12:21,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 288 states have (on average 2.9444444444444446) internal successors, (848), 288 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:21,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 848 transitions. [2022-01-18 05:12:21,731 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 848 transitions. Word has length 18 [2022-01-18 05:12:21,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:21,731 INFO L470 AbstractCegarLoop]: Abstraction has 289 states and 848 transitions. [2022-01-18 05:12:21,732 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) [2022-01-18 05:12:21,732 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 848 transitions. [2022-01-18 05:12:21,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:21,732 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:21,732 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:21,747 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2022-01-18 05:12:21,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:21,932 INFO L402 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:21,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:21,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1278687303, now seen corresponding path program 44 times [2022-01-18 05:12:21,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:21,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342537969] [2022-01-18 05:12:21,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:21,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:21,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:21,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:21,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:21,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342537969] [2022-01-18 05:12:21,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342537969] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:21,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79335918] [2022-01-18 05:12:21,992 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 05:12:21,992 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:21,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:21,993 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) [2022-01-18 05:12:21,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-01-18 05:12:22,015 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:12:22,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:12:22,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:12:22,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:22,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:22,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:22,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:22,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79335918] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:22,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 05:12:22,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 17 [2022-01-18 05:12:22,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962173255] [2022-01-18 05:12:22,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:12:22,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:12:22,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:22,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:12:22,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2022-01-18 05:12:22,416 INFO L87 Difference]: Start difference. First operand 289 states and 848 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:22,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:22,609 INFO L93 Difference]: Finished difference Result 485 states and 1345 transitions. [2022-01-18 05:12:22,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:22,609 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 [2022-01-18 05:12:22,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:22,610 INFO L225 Difference]: With dead ends: 485 [2022-01-18 05:12:22,610 INFO L226 Difference]: Without dead ends: 462 [2022-01-18 05:12:22,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2022-01-18 05:12:22,610 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 83 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:22,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 65 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:22,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2022-01-18 05:12:22,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 297. [2022-01-18 05:12:22,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 296 states have (on average 2.939189189189189) internal successors, (870), 296 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:22,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 870 transitions. [2022-01-18 05:12:22,614 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 870 transitions. Word has length 18 [2022-01-18 05:12:22,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:22,614 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 870 transitions. [2022-01-18 05:12:22,614 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) [2022-01-18 05:12:22,614 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 870 transitions. [2022-01-18 05:12:22,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:22,614 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:22,614 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:22,629 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2022-01-18 05:12:22,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable157 [2022-01-18 05:12:22,815 INFO L402 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:22,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:22,815 INFO L85 PathProgramCache]: Analyzing trace with hash 686494219, now seen corresponding path program 45 times [2022-01-18 05:12:22,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:22,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816464071] [2022-01-18 05:12:22,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:22,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:22,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:22,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:22,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:22,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816464071] [2022-01-18 05:12:22,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816464071] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:22,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764649230] [2022-01-18 05:12:22,872 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:12:22,872 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:22,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:22,873 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) [2022-01-18 05:12:22,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-01-18 05:12:22,895 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 05:12:22,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:12:22,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:12:22,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:22,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:22,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:23,309 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:23,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764649230] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:12:23,310 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:12:23,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2022-01-18 05:12:23,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729234586] [2022-01-18 05:12:23,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:12:23,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 05:12:23,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:23,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 05:12:23,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2022-01-18 05:12:23,310 INFO L87 Difference]: Start difference. First operand 297 states and 870 transitions. Second operand has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:23,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:23,583 INFO L93 Difference]: Finished difference Result 469 states and 1315 transitions. [2022-01-18 05:12:23,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:23,584 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 05:12:23,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:23,584 INFO L225 Difference]: With dead ends: 469 [2022-01-18 05:12:23,584 INFO L226 Difference]: Without dead ends: 450 [2022-01-18 05:12:23,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2022-01-18 05:12:23,585 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 131 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:23,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 128 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:23,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-01-18 05:12:23,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 285. [2022-01-18 05:12:23,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 284 states have (on average 2.9507042253521125) internal successors, (838), 284 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:23,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 838 transitions. [2022-01-18 05:12:23,588 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 838 transitions. Word has length 18 [2022-01-18 05:12:23,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:23,588 INFO L470 AbstractCegarLoop]: Abstraction has 285 states and 838 transitions. [2022-01-18 05:12:23,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:23,589 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 838 transitions. [2022-01-18 05:12:23,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:23,589 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:23,589 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:23,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-01-18 05:12:23,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable158 [2022-01-18 05:12:23,789 INFO L402 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:23,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:23,790 INFO L85 PathProgramCache]: Analyzing trace with hash -197798994, now seen corresponding path program 5 times [2022-01-18 05:12:23,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:23,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271317443] [2022-01-18 05:12:23,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:23,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:23,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:23,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:23,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:23,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271317443] [2022-01-18 05:12:23,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271317443] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:23,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665415413] [2022-01-18 05:12:23,825 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 05:12:23,825 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:23,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:23,825 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) [2022-01-18 05:12:23,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-01-18 05:12:23,847 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:12:23,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:12:23,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 05:12:23,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:23,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:23,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:23,979 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:23,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665415413] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:12:23,979 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:12:23,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2022-01-18 05:12:23,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273511540] [2022-01-18 05:12:23,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:12:23,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 05:12:23,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:23,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 05:12:23,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-01-18 05:12:23,980 INFO L87 Difference]: Start difference. First operand 285 states and 838 transitions. Second operand has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:24,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:24,127 INFO L93 Difference]: Finished difference Result 480 states and 1342 transitions. [2022-01-18 05:12:24,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:24,128 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 05:12:24,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:24,129 INFO L225 Difference]: With dead ends: 480 [2022-01-18 05:12:24,129 INFO L226 Difference]: Without dead ends: 458 [2022-01-18 05:12:24,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2022-01-18 05:12:24,129 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 120 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:24,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 97 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:24,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2022-01-18 05:12:24,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 289. [2022-01-18 05:12:24,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 288 states have (on average 2.9583333333333335) internal successors, (852), 288 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:24,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 852 transitions. [2022-01-18 05:12:24,133 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 852 transitions. Word has length 18 [2022-01-18 05:12:24,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:24,133 INFO L470 AbstractCegarLoop]: Abstraction has 289 states and 852 transitions. [2022-01-18 05:12:24,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:24,133 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 852 transitions. [2022-01-18 05:12:24,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:24,133 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:24,133 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:24,149 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2022-01-18 05:12:24,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable159 [2022-01-18 05:12:24,334 INFO L402 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:24,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:24,334 INFO L85 PathProgramCache]: Analyzing trace with hash 2033870275, now seen corresponding path program 46 times [2022-01-18 05:12:24,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:24,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178399378] [2022-01-18 05:12:24,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:24,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:24,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:24,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:24,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:24,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178399378] [2022-01-18 05:12:24,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178399378] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:24,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614983019] [2022-01-18 05:12:24,391 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 05:12:24,391 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:24,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:24,392 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) [2022-01-18 05:12:24,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-01-18 05:12:24,418 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 05:12:24,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:12:24,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:12:24,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:24,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:24,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:24,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:24,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614983019] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:24,830 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 05:12:24,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 16 [2022-01-18 05:12:24,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815476586] [2022-01-18 05:12:24,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:12:24,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:12:24,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:24,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:12:24,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-01-18 05:12:24,831 INFO L87 Difference]: Start difference. First operand 289 states and 852 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:25,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:25,028 INFO L93 Difference]: Finished difference Result 435 states and 1227 transitions. [2022-01-18 05:12:25,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:25,029 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 [2022-01-18 05:12:25,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:25,029 INFO L225 Difference]: With dead ends: 435 [2022-01-18 05:12:25,029 INFO L226 Difference]: Without dead ends: 408 [2022-01-18 05:12:25,029 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2022-01-18 05:12:25,030 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 71 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:25,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 70 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:25,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2022-01-18 05:12:25,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 289. [2022-01-18 05:12:25,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 288 states have (on average 2.951388888888889) internal successors, (850), 288 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:25,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 850 transitions. [2022-01-18 05:12:25,033 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 850 transitions. Word has length 18 [2022-01-18 05:12:25,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:25,033 INFO L470 AbstractCegarLoop]: Abstraction has 289 states and 850 transitions. [2022-01-18 05:12:25,034 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) [2022-01-18 05:12:25,034 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 850 transitions. [2022-01-18 05:12:25,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:25,034 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:25,034 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:25,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-01-18 05:12:25,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable160 [2022-01-18 05:12:25,236 INFO L402 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:25,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:25,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1536570086, now seen corresponding path program 6 times [2022-01-18 05:12:25,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:25,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775507807] [2022-01-18 05:12:25,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:25,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:25,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:25,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:25,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:25,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775507807] [2022-01-18 05:12:25,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775507807] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:25,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848983420] [2022-01-18 05:12:25,277 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 05:12:25,277 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:25,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:25,278 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) [2022-01-18 05:12:25,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-01-18 05:12:25,300 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 05:12:25,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:12:25,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 05:12:25,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:25,375 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:25,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:25,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:25,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848983420] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:12:25,454 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:12:25,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2022-01-18 05:12:25,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552262441] [2022-01-18 05:12:25,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:12:25,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 05:12:25,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:25,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 05:12:25,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-01-18 05:12:25,455 INFO L87 Difference]: Start difference. First operand 289 states and 850 transitions. Second operand has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:25,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:25,586 INFO L93 Difference]: Finished difference Result 485 states and 1348 transitions. [2022-01-18 05:12:25,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:25,586 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 05:12:25,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:25,587 INFO L225 Difference]: With dead ends: 485 [2022-01-18 05:12:25,587 INFO L226 Difference]: Without dead ends: 463 [2022-01-18 05:12:25,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2022-01-18 05:12:25,587 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 108 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:25,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 85 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:25,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2022-01-18 05:12:25,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 291. [2022-01-18 05:12:25,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 290 states have (on average 2.962068965517241) internal successors, (859), 290 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:25,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 859 transitions. [2022-01-18 05:12:25,591 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 859 transitions. Word has length 18 [2022-01-18 05:12:25,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:25,591 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 859 transitions. [2022-01-18 05:12:25,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:25,591 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 859 transitions. [2022-01-18 05:12:25,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:25,592 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:25,592 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:25,607 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2022-01-18 05:12:25,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:25,792 INFO L402 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:25,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:25,792 INFO L85 PathProgramCache]: Analyzing trace with hash 824244543, now seen corresponding path program 47 times [2022-01-18 05:12:25,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:25,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550454923] [2022-01-18 05:12:25,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:25,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:25,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:25,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:25,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:25,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550454923] [2022-01-18 05:12:25,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550454923] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:25,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620021491] [2022-01-18 05:12:25,853 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 05:12:25,853 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:25,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:25,854 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) [2022-01-18 05:12:25,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-01-18 05:12:25,880 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:12:25,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:12:25,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:12:25,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:25,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:25,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:26,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:26,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620021491] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:26,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 05:12:26,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 17 [2022-01-18 05:12:26,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809254837] [2022-01-18 05:12:26,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:12:26,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:12:26,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:26,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:12:26,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2022-01-18 05:12:26,301 INFO L87 Difference]: Start difference. First operand 291 states and 859 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:26,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:26,517 INFO L93 Difference]: Finished difference Result 434 states and 1224 transitions. [2022-01-18 05:12:26,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:26,517 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 [2022-01-18 05:12:26,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:26,518 INFO L225 Difference]: With dead ends: 434 [2022-01-18 05:12:26,518 INFO L226 Difference]: Without dead ends: 411 [2022-01-18 05:12:26,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2022-01-18 05:12:26,518 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 74 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:26,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 72 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:26,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2022-01-18 05:12:26,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 297. [2022-01-18 05:12:26,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 296 states have (on average 2.9527027027027026) internal successors, (874), 296 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:26,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 874 transitions. [2022-01-18 05:12:26,522 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 874 transitions. Word has length 18 [2022-01-18 05:12:26,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:26,522 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 874 transitions. [2022-01-18 05:12:26,522 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) [2022-01-18 05:12:26,522 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 874 transitions. [2022-01-18 05:12:26,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:26,522 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:26,522 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:26,538 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2022-01-18 05:12:26,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162,53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:26,738 INFO L402 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:26,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:26,738 INFO L85 PathProgramCache]: Analyzing trace with hash 824271338, now seen corresponding path program 7 times [2022-01-18 05:12:26,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:26,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621378615] [2022-01-18 05:12:26,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:26,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:26,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:26,780 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:26,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:26,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621378615] [2022-01-18 05:12:26,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621378615] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:12:26,780 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:12:26,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 05:12:26,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307772911] [2022-01-18 05:12:26,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:12:26,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:12:26,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:26,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:12:26,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:12:26,781 INFO L87 Difference]: Start difference. First operand 297 states and 874 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:26,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:26,910 INFO L93 Difference]: Finished difference Result 455 states and 1279 transitions. [2022-01-18 05:12:26,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:26,911 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 [2022-01-18 05:12:26,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:26,912 INFO L225 Difference]: With dead ends: 455 [2022-01-18 05:12:26,912 INFO L226 Difference]: Without dead ends: 426 [2022-01-18 05:12:26,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2022-01-18 05:12:26,912 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 66 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:26,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 80 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:26,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2022-01-18 05:12:26,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 297. [2022-01-18 05:12:26,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 296 states have (on average 2.945945945945946) internal successors, (872), 296 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:26,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 872 transitions. [2022-01-18 05:12:26,916 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 872 transitions. Word has length 18 [2022-01-18 05:12:26,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:26,916 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 872 transitions. [2022-01-18 05:12:26,916 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) [2022-01-18 05:12:26,916 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 872 transitions. [2022-01-18 05:12:26,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:26,916 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:26,916 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:26,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2022-01-18 05:12:26,916 INFO L402 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:26,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:26,917 INFO L85 PathProgramCache]: Analyzing trace with hash 232051459, now seen corresponding path program 48 times [2022-01-18 05:12:26,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:26,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643732191] [2022-01-18 05:12:26,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:26,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:26,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:26,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:26,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:26,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643732191] [2022-01-18 05:12:26,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643732191] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:26,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539278276] [2022-01-18 05:12:26,983 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 05:12:26,983 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:26,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:26,984 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) [2022-01-18 05:12:26,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-01-18 05:12:27,007 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 05:12:27,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:12:27,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:12:27,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:27,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:27,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:27,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:27,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539278276] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:12:27,393 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:12:27,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2022-01-18 05:12:27,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923532615] [2022-01-18 05:12:27,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:12:27,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 05:12:27,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:27,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 05:12:27,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2022-01-18 05:12:27,393 INFO L87 Difference]: Start difference. First operand 297 states and 872 transitions. Second operand has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:27,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:27,642 INFO L93 Difference]: Finished difference Result 402 states and 1155 transitions. [2022-01-18 05:12:27,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:27,642 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 05:12:27,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:27,643 INFO L225 Difference]: With dead ends: 402 [2022-01-18 05:12:27,643 INFO L226 Difference]: Without dead ends: 383 [2022-01-18 05:12:27,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2022-01-18 05:12:27,643 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 121 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:27,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 102 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:27,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2022-01-18 05:12:27,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 289. [2022-01-18 05:12:27,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 288 states have (on average 2.951388888888889) internal successors, (850), 288 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:27,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 850 transitions. [2022-01-18 05:12:27,646 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 850 transitions. Word has length 18 [2022-01-18 05:12:27,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:27,646 INFO L470 AbstractCegarLoop]: Abstraction has 289 states and 850 transitions. [2022-01-18 05:12:27,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:27,647 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 850 transitions. [2022-01-18 05:12:27,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:27,647 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:27,647 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:27,662 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2022-01-18 05:12:27,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164,54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:27,847 INFO L402 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:27,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:27,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1675811136, now seen corresponding path program 6 times [2022-01-18 05:12:27,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:27,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517317071] [2022-01-18 05:12:27,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:27,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:27,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:27,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:27,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:27,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517317071] [2022-01-18 05:12:27,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517317071] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:27,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351975501] [2022-01-18 05:12:27,874 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 05:12:27,874 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:27,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:27,875 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) [2022-01-18 05:12:27,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-01-18 05:12:27,897 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 05:12:27,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:12:27,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 05:12:27,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:27,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:27,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:28,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:28,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351975501] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:12:28,083 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:12:28,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 14 [2022-01-18 05:12:28,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630986444] [2022-01-18 05:12:28,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:12:28,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 05:12:28,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:28,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 05:12:28,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-01-18 05:12:28,084 INFO L87 Difference]: Start difference. First operand 289 states and 850 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:28,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:28,252 INFO L93 Difference]: Finished difference Result 435 states and 1232 transitions. [2022-01-18 05:12:28,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:12:28,253 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 05:12:28,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:28,253 INFO L225 Difference]: With dead ends: 435 [2022-01-18 05:12:28,253 INFO L226 Difference]: Without dead ends: 347 [2022-01-18 05:12:28,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2022-01-18 05:12:28,254 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 113 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:28,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 113 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:28,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2022-01-18 05:12:28,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 255. [2022-01-18 05:12:28,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 2.9803149606299213) internal successors, (757), 254 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:28,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 757 transitions. [2022-01-18 05:12:28,257 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 757 transitions. Word has length 18 [2022-01-18 05:12:28,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:28,257 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 757 transitions. [2022-01-18 05:12:28,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:28,257 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 757 transitions. [2022-01-18 05:12:28,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:28,257 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:28,257 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:28,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2022-01-18 05:12:28,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:28,458 INFO L402 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:28,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:28,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1048056174, now seen corresponding path program 8 times [2022-01-18 05:12:28,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:28,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979952251] [2022-01-18 05:12:28,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:28,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:28,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:28,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:28,477 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:28,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979952251] [2022-01-18 05:12:28,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979952251] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:28,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794015475] [2022-01-18 05:12:28,478 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 05:12:28,478 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:28,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:28,479 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) [2022-01-18 05:12:28,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-01-18 05:12:28,501 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:12:28,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:12:28,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:12:28,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:28,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:28,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:28,589 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:28,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794015475] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:12:28,589 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:12:28,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 8 [2022-01-18 05:12:28,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608967450] [2022-01-18 05:12:28,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:12:28,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:12:28,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:28,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:12:28,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:12:28,590 INFO L87 Difference]: Start difference. First operand 255 states and 757 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:28,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:28,678 INFO L93 Difference]: Finished difference Result 390 states and 1138 transitions. [2022-01-18 05:12:28,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 05:12:28,679 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 05:12:28,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:28,679 INFO L225 Difference]: With dead ends: 390 [2022-01-18 05:12:28,679 INFO L226 Difference]: Without dead ends: 350 [2022-01-18 05:12:28,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:12:28,679 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 43 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:28,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 73 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:28,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2022-01-18 05:12:28,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 244. [2022-01-18 05:12:28,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 243 states have (on average 2.983539094650206) internal successors, (725), 243 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:28,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 725 transitions. [2022-01-18 05:12:28,683 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 725 transitions. Word has length 18 [2022-01-18 05:12:28,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:28,683 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 725 transitions. [2022-01-18 05:12:28,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:28,683 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 725 transitions. [2022-01-18 05:12:28,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:28,683 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:28,683 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:28,699 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2022-01-18 05:12:28,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:28,888 INFO L402 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:28,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:28,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1801424317, now seen corresponding path program 49 times [2022-01-18 05:12:28,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:28,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145150244] [2022-01-18 05:12:28,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:28,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:28,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:28,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:28,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:28,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145150244] [2022-01-18 05:12:28,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145150244] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:28,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301800554] [2022-01-18 05:12:28,954 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 05:12:28,954 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:28,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:28,955 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) [2022-01-18 05:12:28,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-01-18 05:12:28,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:28,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:12:28,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:29,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:29,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:29,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:29,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301800554] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:12:29,315 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:12:29,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 15 [2022-01-18 05:12:29,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181076677] [2022-01-18 05:12:29,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:12:29,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 05:12:29,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:29,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 05:12:29,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-01-18 05:12:29,316 INFO L87 Difference]: Start difference. First operand 244 states and 725 transitions. Second operand has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:29,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:29,573 INFO L93 Difference]: Finished difference Result 447 states and 1272 transitions. [2022-01-18 05:12:29,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:29,573 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 [2022-01-18 05:12:29,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:29,574 INFO L225 Difference]: With dead ends: 447 [2022-01-18 05:12:29,574 INFO L226 Difference]: Without dead ends: 428 [2022-01-18 05:12:29,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2022-01-18 05:12:29,574 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 120 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:29,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 129 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:29,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2022-01-18 05:12:29,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 249. [2022-01-18 05:12:29,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 248 states have (on average 3.0) internal successors, (744), 248 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:29,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 744 transitions. [2022-01-18 05:12:29,578 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 744 transitions. Word has length 18 [2022-01-18 05:12:29,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:29,578 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 744 transitions. [2022-01-18 05:12:29,578 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) [2022-01-18 05:12:29,578 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 744 transitions. [2022-01-18 05:12:29,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:29,578 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:29,578 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:29,593 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2022-01-18 05:12:29,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable167 [2022-01-18 05:12:29,779 INFO L402 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:29,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:29,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1962644257, now seen corresponding path program 50 times [2022-01-18 05:12:29,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:29,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049780647] [2022-01-18 05:12:29,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:29,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:29,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:29,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:29,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:29,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049780647] [2022-01-18 05:12:29,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049780647] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:29,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165983550] [2022-01-18 05:12:29,832 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 05:12:29,832 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:29,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:29,833 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) [2022-01-18 05:12:29,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-01-18 05:12:29,856 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:12:29,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:12:29,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:12:29,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:29,952 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:29,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:30,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:30,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165983550] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:30,267 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 05:12:30,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 15 [2022-01-18 05:12:30,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162594782] [2022-01-18 05:12:30,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:12:30,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:12:30,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:30,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:12:30,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-01-18 05:12:30,268 INFO L87 Difference]: Start difference. First operand 249 states and 744 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:30,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:30,501 INFO L93 Difference]: Finished difference Result 451 states and 1272 transitions. [2022-01-18 05:12:30,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:30,502 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 [2022-01-18 05:12:30,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:30,502 INFO L225 Difference]: With dead ends: 451 [2022-01-18 05:12:30,502 INFO L226 Difference]: Without dead ends: 428 [2022-01-18 05:12:30,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2022-01-18 05:12:30,503 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 77 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:30,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 73 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:30,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2022-01-18 05:12:30,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 247. [2022-01-18 05:12:30,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 246 states have (on average 2.9959349593495936) internal successors, (737), 246 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:30,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 737 transitions. [2022-01-18 05:12:30,506 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 737 transitions. Word has length 18 [2022-01-18 05:12:30,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:30,506 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 737 transitions. [2022-01-18 05:12:30,506 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) [2022-01-18 05:12:30,506 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 737 transitions. [2022-01-18 05:12:30,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:30,507 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:30,507 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:30,522 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2022-01-18 05:12:30,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable168 [2022-01-18 05:12:30,707 INFO L402 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:30,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:30,707 INFO L85 PathProgramCache]: Analyzing trace with hash -280807347, now seen corresponding path program 51 times [2022-01-18 05:12:30,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:30,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985858951] [2022-01-18 05:12:30,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:30,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:30,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:30,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:30,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:30,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985858951] [2022-01-18 05:12:30,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985858951] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:30,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880128812] [2022-01-18 05:12:30,768 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:12:30,768 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:30,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:30,769 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) [2022-01-18 05:12:30,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-01-18 05:12:30,791 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 05:12:30,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:12:30,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:12:30,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:30,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:30,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:31,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:31,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880128812] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:31,169 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 05:12:31,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 14 [2022-01-18 05:12:31,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499000455] [2022-01-18 05:12:31,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:12:31,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:12:31,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:31,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:12:31,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-01-18 05:12:31,169 INFO L87 Difference]: Start difference. First operand 247 states and 737 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:31,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:31,385 INFO L93 Difference]: Finished difference Result 445 states and 1253 transitions. [2022-01-18 05:12:31,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:31,385 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 05:12:31,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:31,386 INFO L225 Difference]: With dead ends: 445 [2022-01-18 05:12:31,386 INFO L226 Difference]: Without dead ends: 418 [2022-01-18 05:12:31,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2022-01-18 05:12:31,386 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 78 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:31,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 62 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:31,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2022-01-18 05:12:31,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 247. [2022-01-18 05:12:31,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 246 states have (on average 2.9878048780487805) internal successors, (735), 246 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:31,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 735 transitions. [2022-01-18 05:12:31,389 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 735 transitions. Word has length 18 [2022-01-18 05:12:31,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:31,389 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 735 transitions. [2022-01-18 05:12:31,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:31,389 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 735 transitions. [2022-01-18 05:12:31,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:31,390 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:31,390 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:31,405 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2022-01-18 05:12:31,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable169 [2022-01-18 05:12:31,590 INFO L402 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:31,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:31,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1315741734, now seen corresponding path program 9 times [2022-01-18 05:12:31,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:31,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688258097] [2022-01-18 05:12:31,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:31,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:31,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:31,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:31,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:31,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688258097] [2022-01-18 05:12:31,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688258097] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:31,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481511387] [2022-01-18 05:12:31,618 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:12:31,619 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:31,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:31,619 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) [2022-01-18 05:12:31,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-01-18 05:12:31,641 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 05:12:31,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:12:31,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:12:31,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:31,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:31,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:31,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:31,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481511387] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:12:31,751 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:12:31,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2022-01-18 05:12:31,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497654144] [2022-01-18 05:12:31,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:12:31,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 05:12:31,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:31,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 05:12:31,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-01-18 05:12:31,752 INFO L87 Difference]: Start difference. First operand 247 states and 735 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:31,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:31,838 INFO L93 Difference]: Finished difference Result 352 states and 995 transitions. [2022-01-18 05:12:31,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 05:12:31,838 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 [2022-01-18 05:12:31,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:31,839 INFO L225 Difference]: With dead ends: 352 [2022-01-18 05:12:31,839 INFO L226 Difference]: Without dead ends: 312 [2022-01-18 05:12:31,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:12:31,839 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 52 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:31,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 72 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:31,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2022-01-18 05:12:31,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 241. [2022-01-18 05:12:31,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 240 states have (on average 2.95) internal successors, (708), 240 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:31,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 708 transitions. [2022-01-18 05:12:31,842 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 708 transitions. Word has length 18 [2022-01-18 05:12:31,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:31,842 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 708 transitions. [2022-01-18 05:12:31,842 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) [2022-01-18 05:12:31,842 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 708 transitions. [2022-01-18 05:12:31,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:31,843 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:31,843 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:31,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2022-01-18 05:12:32,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable170 [2022-01-18 05:12:32,043 INFO L402 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:32,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:32,044 INFO L85 PathProgramCache]: Analyzing trace with hash -315615553, now seen corresponding path program 52 times [2022-01-18 05:12:32,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:32,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039763651] [2022-01-18 05:12:32,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:32,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:32,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:32,106 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:32,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:32,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039763651] [2022-01-18 05:12:32,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039763651] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:32,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260237186] [2022-01-18 05:12:32,107 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 05:12:32,107 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:32,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:32,108 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) [2022-01-18 05:12:32,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-01-18 05:12:32,129 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 05:12:32,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:12:32,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:12:32,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:32,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:32,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:32,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:32,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260237186] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:12:32,441 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:12:32,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 14 [2022-01-18 05:12:32,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572603529] [2022-01-18 05:12:32,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:12:32,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 05:12:32,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:32,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 05:12:32,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-01-18 05:12:32,441 INFO L87 Difference]: Start difference. First operand 241 states and 708 transitions. Second operand has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:32,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:32,620 INFO L93 Difference]: Finished difference Result 481 states and 1326 transitions. [2022-01-18 05:12:32,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:32,620 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 05:12:32,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:32,621 INFO L225 Difference]: With dead ends: 481 [2022-01-18 05:12:32,621 INFO L226 Difference]: Without dead ends: 462 [2022-01-18 05:12:32,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2022-01-18 05:12:32,622 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 149 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:32,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 100 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:32,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2022-01-18 05:12:32,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 247. [2022-01-18 05:12:32,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 246 states have (on average 2.991869918699187) internal successors, (736), 246 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:32,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 736 transitions. [2022-01-18 05:12:32,625 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 736 transitions. Word has length 18 [2022-01-18 05:12:32,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:32,625 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 736 transitions. [2022-01-18 05:12:32,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:32,625 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 736 transitions. [2022-01-18 05:12:32,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:32,626 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:32,626 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:32,641 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2022-01-18 05:12:32,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:32,826 INFO L402 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:32,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:32,827 INFO L85 PathProgramCache]: Analyzing trace with hash -476835493, now seen corresponding path program 53 times [2022-01-18 05:12:32,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:32,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716864554] [2022-01-18 05:12:32,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:32,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:32,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:32,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:32,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:32,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716864554] [2022-01-18 05:12:32,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716864554] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:32,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310231478] [2022-01-18 05:12:32,878 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 05:12:32,878 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:32,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:32,879 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) [2022-01-18 05:12:32,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-01-18 05:12:32,901 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:12:32,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:12:32,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:12:32,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:33,004 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:33,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:33,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:33,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310231478] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:33,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 05:12:33,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 14 [2022-01-18 05:12:33,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060224511] [2022-01-18 05:12:33,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:12:33,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:12:33,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:33,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:12:33,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-01-18 05:12:33,274 INFO L87 Difference]: Start difference. First operand 247 states and 736 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:33,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:33,457 INFO L93 Difference]: Finished difference Result 485 states and 1326 transitions. [2022-01-18 05:12:33,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:33,458 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 [2022-01-18 05:12:33,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:33,458 INFO L225 Difference]: With dead ends: 485 [2022-01-18 05:12:33,458 INFO L226 Difference]: Without dead ends: 462 [2022-01-18 05:12:33,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2022-01-18 05:12:33,458 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 89 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:33,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 69 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:33,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2022-01-18 05:12:33,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 249. [2022-01-18 05:12:33,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 248 states have (on average 2.971774193548387) internal successors, (737), 248 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:33,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 737 transitions. [2022-01-18 05:12:33,482 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 737 transitions. Word has length 18 [2022-01-18 05:12:33,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:33,482 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 737 transitions. [2022-01-18 05:12:33,482 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) [2022-01-18 05:12:33,482 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 737 transitions. [2022-01-18 05:12:33,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:33,482 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:33,482 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:33,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2022-01-18 05:12:33,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:33,697 INFO L402 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:33,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:33,698 INFO L85 PathProgramCache]: Analyzing trace with hash -289865558, now seen corresponding path program 10 times [2022-01-18 05:12:33,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:33,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415202256] [2022-01-18 05:12:33,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:33,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:33,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:33,732 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:33,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:33,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415202256] [2022-01-18 05:12:33,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415202256] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:12:33,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:12:33,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:12:33,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944608345] [2022-01-18 05:12:33,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:12:33,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:12:33,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:33,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:12:33,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:12:33,733 INFO L87 Difference]: Start difference. First operand 249 states and 737 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:33,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:33,803 INFO L93 Difference]: Finished difference Result 294 states and 844 transitions. [2022-01-18 05:12:33,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 05:12:33,803 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 05:12:33,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:33,804 INFO L225 Difference]: With dead ends: 294 [2022-01-18 05:12:33,804 INFO L226 Difference]: Without dead ends: 241 [2022-01-18 05:12:33,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:12:33,804 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 50 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:33,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 39 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 05:12:33,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-01-18 05:12:33,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 217. [2022-01-18 05:12:33,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 2.9444444444444446) internal successors, (636), 216 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:33,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 636 transitions. [2022-01-18 05:12:33,807 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 636 transitions. Word has length 18 [2022-01-18 05:12:33,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:33,807 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 636 transitions. [2022-01-18 05:12:33,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:33,807 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 636 transitions. [2022-01-18 05:12:33,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:33,807 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:33,807 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:33,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2022-01-18 05:12:33,807 INFO L402 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:33,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:33,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1817481091, now seen corresponding path program 54 times [2022-01-18 05:12:33,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:33,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161334680] [2022-01-18 05:12:33,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:33,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:33,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:33,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:33,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:33,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161334680] [2022-01-18 05:12:33,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161334680] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:33,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798766288] [2022-01-18 05:12:33,865 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 05:12:33,865 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:33,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:33,867 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) [2022-01-18 05:12:33,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-01-18 05:12:33,888 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 05:12:33,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:12:33,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:12:33,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:34,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:34,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:34,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:34,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798766288] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:12:34,264 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:12:34,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 18 [2022-01-18 05:12:34,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172717125] [2022-01-18 05:12:34,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:12:34,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 05:12:34,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:34,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 05:12:34,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2022-01-18 05:12:34,265 INFO L87 Difference]: Start difference. First operand 217 states and 636 transitions. Second operand has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:34,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:34,478 INFO L93 Difference]: Finished difference Result 419 states and 1150 transitions. [2022-01-18 05:12:34,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:34,478 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 05:12:34,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:34,479 INFO L225 Difference]: With dead ends: 419 [2022-01-18 05:12:34,479 INFO L226 Difference]: Without dead ends: 400 [2022-01-18 05:12:34,479 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=130, Invalid=376, Unknown=0, NotChecked=0, Total=506 [2022-01-18 05:12:34,479 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 199 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:34,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 104 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:34,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2022-01-18 05:12:34,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 214. [2022-01-18 05:12:34,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 2.971830985915493) internal successors, (633), 213 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:34,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 633 transitions. [2022-01-18 05:12:34,482 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 633 transitions. Word has length 18 [2022-01-18 05:12:34,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:34,482 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 633 transitions. [2022-01-18 05:12:34,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:34,482 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 633 transitions. [2022-01-18 05:12:34,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:34,483 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:34,483 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:34,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2022-01-18 05:12:34,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174,63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:34,683 INFO L402 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:34,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:34,683 INFO L85 PathProgramCache]: Analyzing trace with hash -331279101, now seen corresponding path program 55 times [2022-01-18 05:12:34,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:34,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200709285] [2022-01-18 05:12:34,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:34,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:34,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:34,740 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:34,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:34,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200709285] [2022-01-18 05:12:34,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200709285] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:34,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567991675] [2022-01-18 05:12:34,740 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 05:12:34,741 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:34,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:34,742 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) [2022-01-18 05:12:34,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-01-18 05:12:34,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:34,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:12:34,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:34,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:34,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:35,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:35,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567991675] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:12:35,154 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:12:35,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2022-01-18 05:12:35,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141211299] [2022-01-18 05:12:35,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:12:35,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-18 05:12:35,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:35,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-18 05:12:35,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-01-18 05:12:35,154 INFO L87 Difference]: Start difference. First operand 214 states and 633 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:35,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:35,304 INFO L93 Difference]: Finished difference Result 391 states and 1099 transitions. [2022-01-18 05:12:35,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:35,304 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 05:12:35,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:35,305 INFO L225 Difference]: With dead ends: 391 [2022-01-18 05:12:35,305 INFO L226 Difference]: Without dead ends: 372 [2022-01-18 05:12:35,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2022-01-18 05:12:35,305 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 80 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:35,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 103 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:35,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2022-01-18 05:12:35,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 210. [2022-01-18 05:12:35,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 209 states have (on average 2.9330143540669855) internal successors, (613), 209 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:35,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 613 transitions. [2022-01-18 05:12:35,308 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 613 transitions. Word has length 18 [2022-01-18 05:12:35,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:35,308 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 613 transitions. [2022-01-18 05:12:35,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:35,308 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 613 transitions. [2022-01-18 05:12:35,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:35,309 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:35,309 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:35,324 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2022-01-18 05:12:35,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175,64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:35,509 INFO L402 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:35,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:35,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1336321249, now seen corresponding path program 56 times [2022-01-18 05:12:35,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:35,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814643073] [2022-01-18 05:12:35,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:35,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:35,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:35,567 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:35,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:35,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814643073] [2022-01-18 05:12:35,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814643073] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:35,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579055018] [2022-01-18 05:12:35,568 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 05:12:35,568 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:35,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:35,568 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) [2022-01-18 05:12:35,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-01-18 05:12:35,591 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:12:35,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:12:35,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:12:35,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:35,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:35,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:35,999 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:35,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579055018] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:35,999 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 05:12:35,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 14 [2022-01-18 05:12:35,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36864583] [2022-01-18 05:12:35,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:12:35,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:12:35,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:36,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:12:36,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-01-18 05:12:36,000 INFO L87 Difference]: Start difference. First operand 210 states and 613 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:36,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:36,198 INFO L93 Difference]: Finished difference Result 427 states and 1174 transitions. [2022-01-18 05:12:36,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:36,198 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 [2022-01-18 05:12:36,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:36,199 INFO L225 Difference]: With dead ends: 427 [2022-01-18 05:12:36,199 INFO L226 Difference]: Without dead ends: 404 [2022-01-18 05:12:36,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-01-18 05:12:36,199 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 73 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:36,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 79 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:36,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2022-01-18 05:12:36,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 218. [2022-01-18 05:12:36,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 2.9262672811059907) internal successors, (635), 217 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:36,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 635 transitions. [2022-01-18 05:12:36,202 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 635 transitions. Word has length 18 [2022-01-18 05:12:36,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:36,202 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 635 transitions. [2022-01-18 05:12:36,202 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) [2022-01-18 05:12:36,202 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 635 transitions. [2022-01-18 05:12:36,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:36,202 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:36,203 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:36,218 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2022-01-18 05:12:36,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:36,403 INFO L402 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:36,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:36,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1780529627, now seen corresponding path program 57 times [2022-01-18 05:12:36,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:36,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662076970] [2022-01-18 05:12:36,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:36,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:36,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:36,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:36,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:36,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662076970] [2022-01-18 05:12:36,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662076970] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:36,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006241022] [2022-01-18 05:12:36,458 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:12:36,458 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:36,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:36,459 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) [2022-01-18 05:12:36,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-01-18 05:12:36,481 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 05:12:36,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:12:36,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:12:36,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:36,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:36,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:36,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:36,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006241022] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:12:36,831 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:12:36,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2022-01-18 05:12:36,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103171027] [2022-01-18 05:12:36,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:12:36,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 05:12:36,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:36,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 05:12:36,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-01-18 05:12:36,832 INFO L87 Difference]: Start difference. First operand 218 states and 635 transitions. Second operand has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:37,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:37,046 INFO L93 Difference]: Finished difference Result 411 states and 1144 transitions. [2022-01-18 05:12:37,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:37,048 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 05:12:37,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:37,048 INFO L225 Difference]: With dead ends: 411 [2022-01-18 05:12:37,048 INFO L226 Difference]: Without dead ends: 392 [2022-01-18 05:12:37,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-01-18 05:12:37,049 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 92 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:37,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 125 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:37,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2022-01-18 05:12:37,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 209. [2022-01-18 05:12:37,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 2.923076923076923) internal successors, (608), 208 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:37,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 608 transitions. [2022-01-18 05:12:37,052 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 608 transitions. Word has length 18 [2022-01-18 05:12:37,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:37,052 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 608 transitions. [2022-01-18 05:12:37,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:37,052 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 608 transitions. [2022-01-18 05:12:37,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:37,052 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:37,052 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:37,067 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2022-01-18 05:12:37,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable177 [2022-01-18 05:12:37,252 INFO L402 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:37,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:37,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1155062007, now seen corresponding path program 58 times [2022-01-18 05:12:37,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:37,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273932048] [2022-01-18 05:12:37,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:37,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:37,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:37,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:37,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:37,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273932048] [2022-01-18 05:12:37,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273932048] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:37,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473103964] [2022-01-18 05:12:37,308 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 05:12:37,308 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:37,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:37,309 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) [2022-01-18 05:12:37,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-01-18 05:12:37,330 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 05:12:37,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:12:37,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:12:37,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:37,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:37,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:37,718 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:37,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473103964] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:37,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 05:12:37,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 14 [2022-01-18 05:12:37,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787873086] [2022-01-18 05:12:37,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:12:37,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:12:37,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:37,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:12:37,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-01-18 05:12:37,719 INFO L87 Difference]: Start difference. First operand 209 states and 608 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:37,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:37,936 INFO L93 Difference]: Finished difference Result 371 states and 1026 transitions. [2022-01-18 05:12:37,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:37,937 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 [2022-01-18 05:12:37,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:37,937 INFO L225 Difference]: With dead ends: 371 [2022-01-18 05:12:37,937 INFO L226 Difference]: Without dead ends: 344 [2022-01-18 05:12:37,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2022-01-18 05:12:37,938 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 66 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:37,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 62 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:37,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2022-01-18 05:12:37,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 211. [2022-01-18 05:12:37,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 210 states have (on average 2.919047619047619) internal successors, (613), 210 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:37,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 613 transitions. [2022-01-18 05:12:37,941 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 613 transitions. Word has length 18 [2022-01-18 05:12:37,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:37,941 INFO L470 AbstractCegarLoop]: Abstraction has 211 states and 613 transitions. [2022-01-18 05:12:37,941 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) [2022-01-18 05:12:37,941 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 613 transitions. [2022-01-18 05:12:37,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:37,941 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:37,941 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:37,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2022-01-18 05:12:38,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable178 [2022-01-18 05:12:38,142 INFO L402 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:38,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:38,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1245965, now seen corresponding path program 59 times [2022-01-18 05:12:38,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:38,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511140409] [2022-01-18 05:12:38,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:38,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:38,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:38,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:38,197 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:38,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511140409] [2022-01-18 05:12:38,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511140409] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:38,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365713886] [2022-01-18 05:12:38,197 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 05:12:38,197 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:38,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:38,198 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) [2022-01-18 05:12:38,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-01-18 05:12:38,220 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:12:38,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:12:38,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:12:38,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:38,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:38,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:38,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:38,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1365713886] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:38,652 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 05:12:38,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 15 [2022-01-18 05:12:38,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114789985] [2022-01-18 05:12:38,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:12:38,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:12:38,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:38,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:12:38,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-01-18 05:12:38,652 INFO L87 Difference]: Start difference. First operand 211 states and 613 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:38,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:38,887 INFO L93 Difference]: Finished difference Result 363 states and 1008 transitions. [2022-01-18 05:12:38,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:38,888 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 [2022-01-18 05:12:38,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:38,888 INFO L225 Difference]: With dead ends: 363 [2022-01-18 05:12:38,888 INFO L226 Difference]: Without dead ends: 340 [2022-01-18 05:12:38,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2022-01-18 05:12:38,889 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 74 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:38,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 72 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:38,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2022-01-18 05:12:38,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 219. [2022-01-18 05:12:38,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 2.9128440366972477) internal successors, (635), 218 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:38,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 635 transitions. [2022-01-18 05:12:38,892 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 635 transitions. Word has length 18 [2022-01-18 05:12:38,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:38,892 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 635 transitions. [2022-01-18 05:12:38,892 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) [2022-01-18 05:12:38,892 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 635 transitions. [2022-01-18 05:12:38,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:38,892 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:38,892 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:38,907 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2022-01-18 05:12:39,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable179 [2022-01-18 05:12:39,092 INFO L402 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:39,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:39,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1176870455, now seen corresponding path program 60 times [2022-01-18 05:12:39,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:39,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237973282] [2022-01-18 05:12:39,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:39,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:39,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:39,150 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:39,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:39,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237973282] [2022-01-18 05:12:39,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237973282] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:39,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520257507] [2022-01-18 05:12:39,150 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 05:12:39,150 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:39,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:39,151 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) [2022-01-18 05:12:39,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-01-18 05:12:39,173 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 05:12:39,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:12:39,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:12:39,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:39,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:39,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:39,554 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:39,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520257507] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:12:39,555 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:12:39,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2022-01-18 05:12:39,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083323047] [2022-01-18 05:12:39,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:12:39,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 05:12:39,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:39,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 05:12:39,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-01-18 05:12:39,555 INFO L87 Difference]: Start difference. First operand 219 states and 635 transitions. Second operand has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:39,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:39,774 INFO L93 Difference]: Finished difference Result 338 states and 956 transitions. [2022-01-18 05:12:39,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:39,775 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 05:12:39,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:39,775 INFO L225 Difference]: With dead ends: 338 [2022-01-18 05:12:39,775 INFO L226 Difference]: Without dead ends: 319 [2022-01-18 05:12:39,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2022-01-18 05:12:39,775 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 92 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:39,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 100 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:39,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-01-18 05:12:39,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 209. [2022-01-18 05:12:39,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 2.923076923076923) internal successors, (608), 208 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:39,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 608 transitions. [2022-01-18 05:12:39,778 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 608 transitions. Word has length 18 [2022-01-18 05:12:39,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:39,778 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 608 transitions. [2022-01-18 05:12:39,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:39,778 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 608 transitions. [2022-01-18 05:12:39,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:39,779 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:39,779 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:39,794 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2022-01-18 05:12:39,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable180 [2022-01-18 05:12:39,983 INFO L402 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:39,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:39,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1674326481, now seen corresponding path program 61 times [2022-01-18 05:12:39,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:39,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880791558] [2022-01-18 05:12:39,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:39,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:39,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:40,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:40,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:40,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880791558] [2022-01-18 05:12:40,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880791558] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:40,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392523025] [2022-01-18 05:12:40,050 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 05:12:40,050 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:40,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:40,051 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) [2022-01-18 05:12:40,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-01-18 05:12:40,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:40,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:12:40,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:40,173 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:40,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:40,412 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:40,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392523025] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:12:40,412 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:12:40,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 16 [2022-01-18 05:12:40,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877342659] [2022-01-18 05:12:40,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:12:40,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 05:12:40,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:40,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 05:12:40,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-01-18 05:12:40,413 INFO L87 Difference]: Start difference. First operand 209 states and 608 transitions. Second operand has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:40,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:40,659 INFO L93 Difference]: Finished difference Result 369 states and 1028 transitions. [2022-01-18 05:12:40,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:40,659 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 [2022-01-18 05:12:40,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:40,660 INFO L225 Difference]: With dead ends: 369 [2022-01-18 05:12:40,660 INFO L226 Difference]: Without dead ends: 350 [2022-01-18 05:12:40,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2022-01-18 05:12:40,660 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 147 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:40,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 111 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:40,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2022-01-18 05:12:40,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 214. [2022-01-18 05:12:40,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 2.92018779342723) internal successors, (622), 213 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:40,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 622 transitions. [2022-01-18 05:12:40,663 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 622 transitions. Word has length 18 [2022-01-18 05:12:40,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:40,663 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 622 transitions. [2022-01-18 05:12:40,663 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) [2022-01-18 05:12:40,663 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 622 transitions. [2022-01-18 05:12:40,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:40,663 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:40,663 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:40,679 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2022-01-18 05:12:40,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:40,864 INFO L402 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:40,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:40,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1303234541, now seen corresponding path program 62 times [2022-01-18 05:12:40,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:40,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662374998] [2022-01-18 05:12:40,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:40,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:40,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:40,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:40,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:40,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662374998] [2022-01-18 05:12:40,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662374998] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:40,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237707382] [2022-01-18 05:12:40,946 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 05:12:40,946 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:40,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:40,946 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) [2022-01-18 05:12:40,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-01-18 05:12:40,981 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:12:40,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:12:40,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:12:40,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:41,093 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:41,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:41,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:41,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237707382] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:12:41,324 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:12:41,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-01-18 05:12:41,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732846340] [2022-01-18 05:12:41,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:12:41,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 05:12:41,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:41,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 05:12:41,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2022-01-18 05:12:41,325 INFO L87 Difference]: Start difference. First operand 214 states and 622 transitions. Second operand has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:41,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:41,605 INFO L93 Difference]: Finished difference Result 412 states and 1121 transitions. [2022-01-18 05:12:41,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:41,605 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 05:12:41,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:41,606 INFO L225 Difference]: With dead ends: 412 [2022-01-18 05:12:41,606 INFO L226 Difference]: Without dead ends: 393 [2022-01-18 05:12:41,606 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2022-01-18 05:12:41,606 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 141 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:41,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 134 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:41,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2022-01-18 05:12:41,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 216. [2022-01-18 05:12:41,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 2.925581395348837) internal successors, (629), 215 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:41,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 629 transitions. [2022-01-18 05:12:41,610 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 629 transitions. Word has length 18 [2022-01-18 05:12:41,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:41,610 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 629 transitions. [2022-01-18 05:12:41,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:41,610 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 629 transitions. [2022-01-18 05:12:41,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:41,611 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:41,611 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:41,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2022-01-18 05:12:41,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:41,819 INFO L402 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:41,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:41,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1464454481, now seen corresponding path program 63 times [2022-01-18 05:12:41,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:41,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416357120] [2022-01-18 05:12:41,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:41,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:41,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:41,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:41,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:41,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416357120] [2022-01-18 05:12:41,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416357120] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:41,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593693764] [2022-01-18 05:12:41,878 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:12:41,878 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:41,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:41,879 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) [2022-01-18 05:12:41,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-01-18 05:12:41,901 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 05:12:41,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:12:41,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:12:41,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:42,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:42,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:42,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:42,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593693764] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:42,308 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 05:12:42,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 17 [2022-01-18 05:12:42,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529710150] [2022-01-18 05:12:42,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:12:42,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:12:42,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:42,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:12:42,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2022-01-18 05:12:42,308 INFO L87 Difference]: Start difference. First operand 216 states and 629 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:42,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:42,499 INFO L93 Difference]: Finished difference Result 375 states and 1035 transitions. [2022-01-18 05:12:42,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:42,500 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 [2022-01-18 05:12:42,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:42,500 INFO L225 Difference]: With dead ends: 375 [2022-01-18 05:12:42,500 INFO L226 Difference]: Without dead ends: 352 [2022-01-18 05:12:42,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2022-01-18 05:12:42,501 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 70 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:42,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 67 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:42,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2022-01-18 05:12:42,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 212. [2022-01-18 05:12:42,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 2.924170616113744) internal successors, (617), 211 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:42,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 617 transitions. [2022-01-18 05:12:42,504 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 617 transitions. Word has length 18 [2022-01-18 05:12:42,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:42,504 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 617 transitions. [2022-01-18 05:12:42,504 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) [2022-01-18 05:12:42,504 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 617 transitions. [2022-01-18 05:12:42,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:42,504 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:42,504 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:42,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2022-01-18 05:12:42,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:42,705 INFO L402 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:42,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:42,705 INFO L85 PathProgramCache]: Analyzing trace with hash -262998743, now seen corresponding path program 64 times [2022-01-18 05:12:42,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:42,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380045171] [2022-01-18 05:12:42,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:42,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:42,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:42,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:42,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:42,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380045171] [2022-01-18 05:12:42,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380045171] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:42,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764018196] [2022-01-18 05:12:42,772 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 05:12:42,772 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:42,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:42,773 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) [2022-01-18 05:12:42,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-01-18 05:12:42,794 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 05:12:42,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:12:42,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:12:42,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:42,905 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:42,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:43,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:43,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764018196] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:12:43,144 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:12:43,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-01-18 05:12:43,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724697165] [2022-01-18 05:12:43,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:12:43,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 05:12:43,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:43,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 05:12:43,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2022-01-18 05:12:43,145 INFO L87 Difference]: Start difference. First operand 212 states and 617 transitions. Second operand has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:43,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:43,395 INFO L93 Difference]: Finished difference Result 392 states and 1071 transitions. [2022-01-18 05:12:43,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:43,395 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 05:12:43,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:43,396 INFO L225 Difference]: With dead ends: 392 [2022-01-18 05:12:43,396 INFO L226 Difference]: Without dead ends: 373 [2022-01-18 05:12:43,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2022-01-18 05:12:43,396 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 161 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:43,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 95 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:43,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2022-01-18 05:12:43,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 216. [2022-01-18 05:12:43,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 2.9348837209302325) internal successors, (631), 215 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:43,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 631 transitions. [2022-01-18 05:12:43,399 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 631 transitions. Word has length 18 [2022-01-18 05:12:43,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:43,399 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 631 transitions. [2022-01-18 05:12:43,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:43,399 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 631 transitions. [2022-01-18 05:12:43,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:43,400 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:43,400 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:43,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2022-01-18 05:12:43,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184,73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:43,616 INFO L402 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:43,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:43,616 INFO L85 PathProgramCache]: Analyzing trace with hash -424218683, now seen corresponding path program 65 times [2022-01-18 05:12:43,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:43,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284263951] [2022-01-18 05:12:43,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:43,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:43,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:43,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:43,674 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:43,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284263951] [2022-01-18 05:12:43,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284263951] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:43,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596316100] [2022-01-18 05:12:43,674 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 05:12:43,674 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:43,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:43,675 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) [2022-01-18 05:12:43,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-01-18 05:12:43,697 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:12:43,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:12:43,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:12:43,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:43,804 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:43,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:44,107 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:44,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596316100] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:44,107 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 05:12:44,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 17 [2022-01-18 05:12:44,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495302535] [2022-01-18 05:12:44,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:12:44,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:12:44,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:44,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:12:44,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2022-01-18 05:12:44,108 INFO L87 Difference]: Start difference. First operand 216 states and 631 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:44,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:44,319 INFO L93 Difference]: Finished difference Result 396 states and 1071 transitions. [2022-01-18 05:12:44,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:44,319 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 [2022-01-18 05:12:44,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:44,319 INFO L225 Difference]: With dead ends: 396 [2022-01-18 05:12:44,319 INFO L226 Difference]: Without dead ends: 373 [2022-01-18 05:12:44,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2022-01-18 05:12:44,320 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 74 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:44,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 73 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:44,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2022-01-18 05:12:44,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 214. [2022-01-18 05:12:44,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 2.9295774647887325) internal successors, (624), 213 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:44,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 624 transitions. [2022-01-18 05:12:44,323 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 624 transitions. Word has length 18 [2022-01-18 05:12:44,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:44,323 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 624 transitions. [2022-01-18 05:12:44,323 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) [2022-01-18 05:12:44,323 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 624 transitions. [2022-01-18 05:12:44,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:44,323 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:44,323 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:44,339 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2022-01-18 05:12:44,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:44,524 INFO L402 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:44,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:44,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1257618227, now seen corresponding path program 66 times [2022-01-18 05:12:44,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:44,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540659413] [2022-01-18 05:12:44,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:44,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:44,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:44,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:44,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:44,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540659413] [2022-01-18 05:12:44,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540659413] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:44,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809011430] [2022-01-18 05:12:44,581 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 05:12:44,581 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:44,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:44,582 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) [2022-01-18 05:12:44,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-01-18 05:12:44,604 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 05:12:44,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:12:44,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:12:44,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:44,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:44,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:45,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:45,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809011430] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:45,002 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 05:12:45,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 16 [2022-01-18 05:12:45,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839643452] [2022-01-18 05:12:45,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:12:45,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:12:45,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:45,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:12:45,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-01-18 05:12:45,002 INFO L87 Difference]: Start difference. First operand 214 states and 624 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:45,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:45,173 INFO L93 Difference]: Finished difference Result 361 states and 998 transitions. [2022-01-18 05:12:45,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:45,173 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 [2022-01-18 05:12:45,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:45,174 INFO L225 Difference]: With dead ends: 361 [2022-01-18 05:12:45,174 INFO L226 Difference]: Without dead ends: 334 [2022-01-18 05:12:45,174 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2022-01-18 05:12:45,174 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 78 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:45,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 59 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:45,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2022-01-18 05:12:45,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 212. [2022-01-18 05:12:45,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 2.924170616113744) internal successors, (617), 211 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:45,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 617 transitions. [2022-01-18 05:12:45,177 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 617 transitions. Word has length 18 [2022-01-18 05:12:45,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:45,177 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 617 transitions. [2022-01-18 05:12:45,177 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) [2022-01-18 05:12:45,177 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 617 transitions. [2022-01-18 05:12:45,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:45,177 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:45,177 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:45,192 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2022-01-18 05:12:45,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:45,378 INFO L402 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:45,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:45,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1436072243, now seen corresponding path program 67 times [2022-01-18 05:12:45,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:45,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111095292] [2022-01-18 05:12:45,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:45,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:45,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:45,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:45,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:45,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111095292] [2022-01-18 05:12:45,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111095292] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:45,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556432659] [2022-01-18 05:12:45,441 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 05:12:45,441 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:45,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:45,442 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) [2022-01-18 05:12:45,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-01-18 05:12:45,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:45,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:12:45,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:45,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:45,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:45,836 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:45,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556432659] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:12:45,836 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:12:45,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 15 [2022-01-18 05:12:45,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218078874] [2022-01-18 05:12:45,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:12:45,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 05:12:45,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:45,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 05:12:45,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-01-18 05:12:45,837 INFO L87 Difference]: Start difference. First operand 212 states and 617 transitions. Second operand has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:46,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:46,064 INFO L93 Difference]: Finished difference Result 491 states and 1355 transitions. [2022-01-18 05:12:46,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:46,065 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 [2022-01-18 05:12:46,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:46,065 INFO L225 Difference]: With dead ends: 491 [2022-01-18 05:12:46,065 INFO L226 Difference]: Without dead ends: 472 [2022-01-18 05:12:46,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2022-01-18 05:12:46,066 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 112 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:46,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 123 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:46,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2022-01-18 05:12:46,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 218. [2022-01-18 05:12:46,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 2.9400921658986174) internal successors, (638), 217 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:46,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 638 transitions. [2022-01-18 05:12:46,069 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 638 transitions. Word has length 18 [2022-01-18 05:12:46,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:46,069 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 638 transitions. [2022-01-18 05:12:46,069 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) [2022-01-18 05:12:46,069 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 638 transitions. [2022-01-18 05:12:46,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:46,069 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:46,069 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:46,084 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2022-01-18 05:12:46,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable187 [2022-01-18 05:12:46,270 INFO L402 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:46,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:46,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1807164183, now seen corresponding path program 68 times [2022-01-18 05:12:46,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:46,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057896098] [2022-01-18 05:12:46,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:46,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:46,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:46,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:46,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:46,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057896098] [2022-01-18 05:12:46,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057896098] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:46,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083268494] [2022-01-18 05:12:46,334 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 05:12:46,334 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:46,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:46,334 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) [2022-01-18 05:12:46,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-01-18 05:12:46,355 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:12:46,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:12:46,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:12:46,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:46,471 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:46,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:46,683 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:46,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083268494] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:12:46,683 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:12:46,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 16 [2022-01-18 05:12:46,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517967652] [2022-01-18 05:12:46,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:12:46,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 05:12:46,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:46,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 05:12:46,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-01-18 05:12:46,684 INFO L87 Difference]: Start difference. First operand 218 states and 638 transitions. Second operand has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:46,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:46,915 INFO L93 Difference]: Finished difference Result 526 states and 1428 transitions. [2022-01-18 05:12:46,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:46,915 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 [2022-01-18 05:12:46,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:46,916 INFO L225 Difference]: With dead ends: 526 [2022-01-18 05:12:46,916 INFO L226 Difference]: Without dead ends: 507 [2022-01-18 05:12:46,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2022-01-18 05:12:46,916 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 171 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:46,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 120 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:46,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2022-01-18 05:12:46,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 222. [2022-01-18 05:12:46,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 221 states have (on average 2.9592760180995477) internal successors, (654), 221 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:46,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 654 transitions. [2022-01-18 05:12:46,920 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 654 transitions. Word has length 18 [2022-01-18 05:12:46,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:46,920 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 654 transitions. [2022-01-18 05:12:46,920 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) [2022-01-18 05:12:46,920 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 654 transitions. [2022-01-18 05:12:46,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:46,920 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:46,920 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:46,935 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2022-01-18 05:12:47,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable188 [2022-01-18 05:12:47,121 INFO L402 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:47,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:47,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1645944243, now seen corresponding path program 69 times [2022-01-18 05:12:47,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:47,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632275456] [2022-01-18 05:12:47,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:47,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:47,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:47,173 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:47,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:47,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632275456] [2022-01-18 05:12:47,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632275456] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:47,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524858758] [2022-01-18 05:12:47,174 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:12:47,174 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:47,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:47,175 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) [2022-01-18 05:12:47,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-01-18 05:12:47,197 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 05:12:47,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:12:47,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:12:47,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:47,309 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:47,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:47,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:47,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524858758] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:47,580 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 05:12:47,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 16 [2022-01-18 05:12:47,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596983633] [2022-01-18 05:12:47,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:12:47,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:12:47,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:47,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:12:47,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-01-18 05:12:47,580 INFO L87 Difference]: Start difference. First operand 222 states and 654 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:47,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:47,741 INFO L93 Difference]: Finished difference Result 489 states and 1342 transitions. [2022-01-18 05:12:47,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:47,742 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 [2022-01-18 05:12:47,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:47,742 INFO L225 Difference]: With dead ends: 489 [2022-01-18 05:12:47,742 INFO L226 Difference]: Without dead ends: 466 [2022-01-18 05:12:47,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2022-01-18 05:12:47,743 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 91 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:47,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 63 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:47,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2022-01-18 05:12:47,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 222. [2022-01-18 05:12:47,746 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) [2022-01-18 05:12:47,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 650 transitions. [2022-01-18 05:12:47,746 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 650 transitions. Word has length 18 [2022-01-18 05:12:47,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:47,746 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 650 transitions. [2022-01-18 05:12:47,746 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) [2022-01-18 05:12:47,746 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 650 transitions. [2022-01-18 05:12:47,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:47,747 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:47,747 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:47,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2022-01-18 05:12:47,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable189 [2022-01-18 05:12:47,959 INFO L402 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:47,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:47,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1157408529, now seen corresponding path program 70 times [2022-01-18 05:12:47,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:47,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098477945] [2022-01-18 05:12:47,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:47,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:47,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:48,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:48,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:48,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098477945] [2022-01-18 05:12:48,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098477945] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:48,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261609766] [2022-01-18 05:12:48,015 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 05:12:48,015 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:48,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:48,016 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) [2022-01-18 05:12:48,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-01-18 05:12:48,038 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 05:12:48,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:12:48,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:12:48,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:48,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:48,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:48,334 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:48,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261609766] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:12:48,335 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:12:48,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 14 [2022-01-18 05:12:48,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26950986] [2022-01-18 05:12:48,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:12:48,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 05:12:48,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:48,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 05:12:48,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-01-18 05:12:48,335 INFO L87 Difference]: Start difference. First operand 222 states and 650 transitions. Second operand has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:48,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:48,537 INFO L93 Difference]: Finished difference Result 452 states and 1260 transitions. [2022-01-18 05:12:48,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:48,538 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 05:12:48,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:48,538 INFO L225 Difference]: With dead ends: 452 [2022-01-18 05:12:48,538 INFO L226 Difference]: Without dead ends: 433 [2022-01-18 05:12:48,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2022-01-18 05:12:48,539 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 113 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:48,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 133 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:48,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2022-01-18 05:12:48,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 217. [2022-01-18 05:12:48,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 2.949074074074074) internal successors, (637), 216 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:48,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 637 transitions. [2022-01-18 05:12:48,542 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 637 transitions. Word has length 18 [2022-01-18 05:12:48,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:48,542 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 637 transitions. [2022-01-18 05:12:48,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:48,542 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 637 transitions. [2022-01-18 05:12:48,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:48,542 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:48,542 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:48,557 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2022-01-18 05:12:48,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:48,743 INFO L402 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:48,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:48,743 INFO L85 PathProgramCache]: Analyzing trace with hash 2045451247, now seen corresponding path program 71 times [2022-01-18 05:12:48,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:48,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747082881] [2022-01-18 05:12:48,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:48,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:48,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:48,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:48,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:48,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747082881] [2022-01-18 05:12:48,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747082881] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:48,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276098186] [2022-01-18 05:12:48,792 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 05:12:48,792 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:48,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:48,793 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) [2022-01-18 05:12:48,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-01-18 05:12:48,814 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:12:48,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:12:48,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:12:48,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:48,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:48,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:49,124 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:49,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276098186] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:12:49,124 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:12:49,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2022-01-18 05:12:49,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446208659] [2022-01-18 05:12:49,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:12:49,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 05:12:49,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:49,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 05:12:49,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-01-18 05:12:49,124 INFO L87 Difference]: Start difference. First operand 217 states and 637 transitions. Second operand has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:49,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:49,295 INFO L93 Difference]: Finished difference Result 433 states and 1227 transitions. [2022-01-18 05:12:49,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:49,295 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 05:12:49,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:49,296 INFO L225 Difference]: With dead ends: 433 [2022-01-18 05:12:49,296 INFO L226 Difference]: Without dead ends: 414 [2022-01-18 05:12:49,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2022-01-18 05:12:49,296 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 90 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:49,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 121 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:49,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2022-01-18 05:12:49,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 221. [2022-01-18 05:12:49,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 2.9863636363636363) internal successors, (657), 220 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:49,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 657 transitions. [2022-01-18 05:12:49,299 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 657 transitions. Word has length 18 [2022-01-18 05:12:49,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:49,300 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 657 transitions. [2022-01-18 05:12:49,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:49,300 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 657 transitions. [2022-01-18 05:12:49,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:49,300 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:49,300 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:49,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2022-01-18 05:12:49,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable191 [2022-01-18 05:12:49,515 INFO L402 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:49,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:49,515 INFO L85 PathProgramCache]: Analyzing trace with hash 2068047795, now seen corresponding path program 72 times [2022-01-18 05:12:49,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:49,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144955605] [2022-01-18 05:12:49,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:49,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:49,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:49,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:49,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:49,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144955605] [2022-01-18 05:12:49,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144955605] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:49,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287574555] [2022-01-18 05:12:49,560 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 05:12:49,560 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:49,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:49,561 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) [2022-01-18 05:12:49,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-01-18 05:12:49,582 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 05:12:49,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:12:49,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:12:49,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:49,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:49,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:49,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:49,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287574555] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:12:49,860 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:12:49,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 11 [2022-01-18 05:12:49,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216755752] [2022-01-18 05:12:49,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:12:49,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 05:12:49,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:49,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 05:12:49,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:12:49,861 INFO L87 Difference]: Start difference. First operand 221 states and 657 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:50,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:50,033 INFO L93 Difference]: Finished difference Result 404 states and 1161 transitions. [2022-01-18 05:12:50,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:50,033 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 05:12:50,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:50,034 INFO L225 Difference]: With dead ends: 404 [2022-01-18 05:12:50,034 INFO L226 Difference]: Without dead ends: 385 [2022-01-18 05:12:50,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2022-01-18 05:12:50,034 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 62 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:50,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 105 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:50,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2022-01-18 05:12:50,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 213. [2022-01-18 05:12:50,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 2.9292452830188678) internal successors, (621), 212 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:50,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 621 transitions. [2022-01-18 05:12:50,037 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 621 transitions. Word has length 18 [2022-01-18 05:12:50,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:50,037 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 621 transitions. [2022-01-18 05:12:50,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:50,037 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 621 transitions. [2022-01-18 05:12:50,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:50,037 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:50,037 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:50,053 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2022-01-18 05:12:50,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192,81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:50,251 INFO L402 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:50,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:50,252 INFO L85 PathProgramCache]: Analyzing trace with hash -2074187181, now seen corresponding path program 73 times [2022-01-18 05:12:50,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:50,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848548554] [2022-01-18 05:12:50,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:50,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:50,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:50,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:50,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:50,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848548554] [2022-01-18 05:12:50,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848548554] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:50,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720024952] [2022-01-18 05:12:50,315 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 05:12:50,315 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:50,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:50,316 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) [2022-01-18 05:12:50,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-01-18 05:12:50,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:50,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:12:50,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:50,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:50,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:50,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:50,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720024952] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:12:50,667 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:12:50,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 15 [2022-01-18 05:12:50,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587447025] [2022-01-18 05:12:50,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:12:50,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 05:12:50,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:50,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 05:12:50,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-01-18 05:12:50,668 INFO L87 Difference]: Start difference. First operand 213 states and 621 transitions. Second operand has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:50,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:50,879 INFO L93 Difference]: Finished difference Result 502 states and 1407 transitions. [2022-01-18 05:12:50,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:50,879 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 [2022-01-18 05:12:50,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:50,880 INFO L225 Difference]: With dead ends: 502 [2022-01-18 05:12:50,880 INFO L226 Difference]: Without dead ends: 483 [2022-01-18 05:12:50,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-01-18 05:12:50,880 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 139 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:50,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 131 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:50,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-01-18 05:12:50,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 219. [2022-01-18 05:12:50,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 2.9724770642201834) internal successors, (648), 218 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:50,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 648 transitions. [2022-01-18 05:12:50,884 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 648 transitions. Word has length 18 [2022-01-18 05:12:50,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:50,884 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 648 transitions. [2022-01-18 05:12:50,884 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) [2022-01-18 05:12:50,884 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 648 transitions. [2022-01-18 05:12:50,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:50,884 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:50,884 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:50,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2022-01-18 05:12:51,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193,82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:51,084 INFO L402 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:51,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:51,085 INFO L85 PathProgramCache]: Analyzing trace with hash 2059560175, now seen corresponding path program 74 times [2022-01-18 05:12:51,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:51,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111610992] [2022-01-18 05:12:51,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:51,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:51,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:51,141 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:51,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:51,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111610992] [2022-01-18 05:12:51,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111610992] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:51,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481351161] [2022-01-18 05:12:51,141 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 05:12:51,141 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:51,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:51,142 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) [2022-01-18 05:12:51,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-01-18 05:12:51,164 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:12:51,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:12:51,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:12:51,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:51,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:51,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:51,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:51,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481351161] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:51,541 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 05:12:51,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 15 [2022-01-18 05:12:51,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805437221] [2022-01-18 05:12:51,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:12:51,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:12:51,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:51,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:12:51,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-01-18 05:12:51,542 INFO L87 Difference]: Start difference. First operand 219 states and 648 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:51,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:51,753 INFO L93 Difference]: Finished difference Result 490 states and 1367 transitions. [2022-01-18 05:12:51,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:51,753 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 [2022-01-18 05:12:51,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:51,754 INFO L225 Difference]: With dead ends: 490 [2022-01-18 05:12:51,754 INFO L226 Difference]: Without dead ends: 467 [2022-01-18 05:12:51,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2022-01-18 05:12:51,754 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 84 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:51,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 87 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:51,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2022-01-18 05:12:51,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 221. [2022-01-18 05:12:51,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 2.95) internal successors, (649), 220 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:51,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 649 transitions. [2022-01-18 05:12:51,757 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 649 transitions. Word has length 18 [2022-01-18 05:12:51,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:51,757 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 649 transitions. [2022-01-18 05:12:51,757 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) [2022-01-18 05:12:51,757 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 649 transitions. [2022-01-18 05:12:51,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:51,758 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:51,758 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:51,773 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2022-01-18 05:12:51,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable194 [2022-01-18 05:12:51,958 INFO L402 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:51,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:51,958 INFO L85 PathProgramCache]: Analyzing trace with hash 58909463, now seen corresponding path program 75 times [2022-01-18 05:12:51,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:51,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322632612] [2022-01-18 05:12:51,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:51,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:51,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:52,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:52,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:52,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322632612] [2022-01-18 05:12:52,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322632612] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:52,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876858966] [2022-01-18 05:12:52,019 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:12:52,019 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:52,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:52,020 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) [2022-01-18 05:12:52,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-01-18 05:12:52,041 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 05:12:52,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:12:52,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:12:52,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:52,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:52,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:52,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:52,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876858966] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:12:52,421 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:12:52,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 18 [2022-01-18 05:12:52,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878756701] [2022-01-18 05:12:52,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:12:52,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 05:12:52,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:52,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 05:12:52,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2022-01-18 05:12:52,422 INFO L87 Difference]: Start difference. First operand 221 states and 649 transitions. Second operand has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:52,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:52,679 INFO L93 Difference]: Finished difference Result 505 states and 1410 transitions. [2022-01-18 05:12:52,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:52,679 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 05:12:52,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:52,680 INFO L225 Difference]: With dead ends: 505 [2022-01-18 05:12:52,680 INFO L226 Difference]: Without dead ends: 486 [2022-01-18 05:12:52,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=384, Unknown=0, NotChecked=0, Total=506 [2022-01-18 05:12:52,680 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 193 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:52,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 150 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 05:12:52,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2022-01-18 05:12:52,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 218. [2022-01-18 05:12:52,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 2.9769585253456223) internal successors, (646), 217 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:52,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 646 transitions. [2022-01-18 05:12:52,684 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 646 transitions. Word has length 18 [2022-01-18 05:12:52,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:52,684 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 646 transitions. [2022-01-18 05:12:52,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:52,684 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 646 transitions. [2022-01-18 05:12:52,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:52,684 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:52,684 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:52,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2022-01-18 05:12:52,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:52,884 INFO L402 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:52,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:52,885 INFO L85 PathProgramCache]: Analyzing trace with hash -2089850729, now seen corresponding path program 76 times [2022-01-18 05:12:52,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:52,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779773142] [2022-01-18 05:12:52,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:52,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:52,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:52,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:52,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:52,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779773142] [2022-01-18 05:12:52,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779773142] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:52,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805281263] [2022-01-18 05:12:52,932 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 05:12:52,932 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:52,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:52,933 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) [2022-01-18 05:12:52,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-01-18 05:12:52,955 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 05:12:52,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:12:52,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:12:52,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:53,056 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:53,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:53,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:53,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805281263] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:12:53,261 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:12:53,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2022-01-18 05:12:53,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950579165] [2022-01-18 05:12:53,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:12:53,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-18 05:12:53,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:53,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-18 05:12:53,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-01-18 05:12:53,261 INFO L87 Difference]: Start difference. First operand 218 states and 646 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:53,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:53,417 INFO L93 Difference]: Finished difference Result 486 states and 1381 transitions. [2022-01-18 05:12:53,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:53,417 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 05:12:53,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:53,418 INFO L225 Difference]: With dead ends: 486 [2022-01-18 05:12:53,418 INFO L226 Difference]: Without dead ends: 467 [2022-01-18 05:12:53,418 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2022-01-18 05:12:53,419 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 73 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:53,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 117 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:53,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2022-01-18 05:12:53,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 214. [2022-01-18 05:12:53,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 2.9389671361502345) internal successors, (626), 213 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:53,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 626 transitions. [2022-01-18 05:12:53,422 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 626 transitions. Word has length 18 [2022-01-18 05:12:53,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:53,422 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 626 transitions. [2022-01-18 05:12:53,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:53,422 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 626 transitions. [2022-01-18 05:12:53,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:53,423 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:53,423 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:53,438 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2022-01-18 05:12:53,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:53,623 INFO L402 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:53,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:53,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1200074419, now seen corresponding path program 77 times [2022-01-18 05:12:53,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:53,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898529323] [2022-01-18 05:12:53,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:53,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:53,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:53,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:53,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:53,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898529323] [2022-01-18 05:12:53,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898529323] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:53,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130492557] [2022-01-18 05:12:53,672 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 05:12:53,672 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:53,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:53,673 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) [2022-01-18 05:12:53,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-01-18 05:12:53,694 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:12:53,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:12:53,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:12:53,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:53,795 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:53,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:54,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:54,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130492557] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:54,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 05:12:54,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 14 [2022-01-18 05:12:54,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592912620] [2022-01-18 05:12:54,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:12:54,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:12:54,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:54,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:12:54,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-01-18 05:12:54,073 INFO L87 Difference]: Start difference. First operand 214 states and 626 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:54,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:54,255 INFO L93 Difference]: Finished difference Result 443 states and 1246 transitions. [2022-01-18 05:12:54,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:54,255 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 [2022-01-18 05:12:54,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:54,255 INFO L225 Difference]: With dead ends: 443 [2022-01-18 05:12:54,256 INFO L226 Difference]: Without dead ends: 420 [2022-01-18 05:12:54,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2022-01-18 05:12:54,256 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 69 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:54,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 68 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:54,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2022-01-18 05:12:54,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 222. [2022-01-18 05:12:54,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 221 states have (on average 2.932126696832579) internal successors, (648), 221 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:54,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 648 transitions. [2022-01-18 05:12:54,259 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 648 transitions. Word has length 18 [2022-01-18 05:12:54,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:54,259 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 648 transitions. [2022-01-18 05:12:54,259 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) [2022-01-18 05:12:54,259 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 648 transitions. [2022-01-18 05:12:54,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:54,259 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:54,259 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:54,275 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2022-01-18 05:12:54,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197,86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:54,460 INFO L402 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:54,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:54,460 INFO L85 PathProgramCache]: Analyzing trace with hash 21957999, now seen corresponding path program 78 times [2022-01-18 05:12:54,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:54,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260150693] [2022-01-18 05:12:54,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:54,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:54,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:54,511 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:54,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:54,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260150693] [2022-01-18 05:12:54,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260150693] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:54,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868732985] [2022-01-18 05:12:54,511 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 05:12:54,511 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:54,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:54,512 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) [2022-01-18 05:12:54,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2022-01-18 05:12:54,533 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 05:12:54,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:12:54,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:12:54,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:54,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:54,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:54,857 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:54,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868732985] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:12:54,857 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:12:54,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2022-01-18 05:12:54,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697144326] [2022-01-18 05:12:54,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:12:54,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 05:12:54,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:54,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 05:12:54,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-01-18 05:12:54,858 INFO L87 Difference]: Start difference. First operand 222 states and 648 transitions. Second operand has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:55,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:55,041 INFO L93 Difference]: Finished difference Result 427 states and 1216 transitions. [2022-01-18 05:12:55,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:55,042 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 05:12:55,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:55,042 INFO L225 Difference]: With dead ends: 427 [2022-01-18 05:12:55,042 INFO L226 Difference]: Without dead ends: 408 [2022-01-18 05:12:55,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-01-18 05:12:55,042 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 77 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:55,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 103 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:55,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2022-01-18 05:12:55,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 212. [2022-01-18 05:12:55,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 2.924170616113744) internal successors, (617), 211 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:55,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 617 transitions. [2022-01-18 05:12:55,045 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 617 transitions. Word has length 18 [2022-01-18 05:12:55,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:55,046 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 617 transitions. [2022-01-18 05:12:55,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:55,046 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 617 transitions. [2022-01-18 05:12:55,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:55,046 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:55,046 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:55,061 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Ended with exit code 0 [2022-01-18 05:12:55,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198,87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:55,246 INFO L402 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:55,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:55,247 INFO L85 PathProgramCache]: Analyzing trace with hash -325806739, now seen corresponding path program 79 times [2022-01-18 05:12:55,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:55,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893603515] [2022-01-18 05:12:55,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:55,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:55,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:55,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:55,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:55,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893603515] [2022-01-18 05:12:55,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893603515] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:55,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375917389] [2022-01-18 05:12:55,312 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 05:12:55,312 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:55,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:55,313 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) [2022-01-18 05:12:55,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2022-01-18 05:12:55,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:55,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:12:55,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:55,436 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:55,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:55,685 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:55,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375917389] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:12:55,686 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:12:55,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 15 [2022-01-18 05:12:55,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788749129] [2022-01-18 05:12:55,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:12:55,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 05:12:55,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:55,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 05:12:55,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-01-18 05:12:55,686 INFO L87 Difference]: Start difference. First operand 212 states and 617 transitions. Second operand has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:55,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:55,915 INFO L93 Difference]: Finished difference Result 424 states and 1183 transitions. [2022-01-18 05:12:55,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:55,916 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 [2022-01-18 05:12:55,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:55,916 INFO L225 Difference]: With dead ends: 424 [2022-01-18 05:12:55,916 INFO L226 Difference]: Without dead ends: 405 [2022-01-18 05:12:55,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2022-01-18 05:12:55,917 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 135 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:55,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 117 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:55,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2022-01-18 05:12:55,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 217. [2022-01-18 05:12:55,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 2.9444444444444446) internal successors, (636), 216 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:55,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 636 transitions. [2022-01-18 05:12:55,920 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 636 transitions. Word has length 18 [2022-01-18 05:12:55,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:55,920 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 636 transitions. [2022-01-18 05:12:55,920 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) [2022-01-18 05:12:55,920 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 636 transitions. [2022-01-18 05:12:55,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:55,920 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:55,920 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:55,935 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Ended with exit code 0 [2022-01-18 05:12:56,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:56,121 INFO L402 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:56,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:56,121 INFO L85 PathProgramCache]: Analyzing trace with hash -487026679, now seen corresponding path program 80 times [2022-01-18 05:12:56,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:56,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472296528] [2022-01-18 05:12:56,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:56,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:56,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:56,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:56,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:56,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472296528] [2022-01-18 05:12:56,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472296528] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:56,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588955649] [2022-01-18 05:12:56,178 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 05:12:56,178 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:56,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:56,179 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) [2022-01-18 05:12:56,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2022-01-18 05:12:56,200 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:12:56,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:12:56,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:12:56,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:56,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:56,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:56,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:56,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588955649] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:56,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 05:12:56,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 15 [2022-01-18 05:12:56,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907630850] [2022-01-18 05:12:56,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:12:56,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:12:56,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:56,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:12:56,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-01-18 05:12:56,637 INFO L87 Difference]: Start difference. First operand 217 states and 636 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:56,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:56,862 INFO L93 Difference]: Finished difference Result 428 states and 1183 transitions. [2022-01-18 05:12:56,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:56,863 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 [2022-01-18 05:12:56,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:56,863 INFO L225 Difference]: With dead ends: 428 [2022-01-18 05:12:56,863 INFO L226 Difference]: Without dead ends: 405 [2022-01-18 05:12:56,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2022-01-18 05:12:56,864 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 77 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:56,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 68 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:56,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2022-01-18 05:12:56,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 215. [2022-01-18 05:12:56,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 2.939252336448598) internal successors, (629), 214 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:56,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 629 transitions. [2022-01-18 05:12:56,867 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 629 transitions. Word has length 18 [2022-01-18 05:12:56,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:56,867 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 629 transitions. [2022-01-18 05:12:56,867 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) [2022-01-18 05:12:56,867 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 629 transitions. [2022-01-18 05:12:56,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:56,867 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:56,867 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:56,882 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Forceful destruction successful, exit code 0 [2022-01-18 05:12:57,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable200 [2022-01-18 05:12:57,068 INFO L402 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:57,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:57,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1194810231, now seen corresponding path program 81 times [2022-01-18 05:12:57,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:57,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617668664] [2022-01-18 05:12:57,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:57,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:57,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:57,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:57,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:57,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617668664] [2022-01-18 05:12:57,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617668664] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:57,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775415201] [2022-01-18 05:12:57,119 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:12:57,119 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:57,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:57,120 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) [2022-01-18 05:12:57,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2022-01-18 05:12:57,141 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 05:12:57,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:12:57,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:12:57,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:57,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:57,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:57,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:57,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775415201] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:57,550 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 05:12:57,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 14 [2022-01-18 05:12:57,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623279186] [2022-01-18 05:12:57,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:12:57,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:12:57,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:57,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:12:57,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-01-18 05:12:57,551 INFO L87 Difference]: Start difference. First operand 215 states and 629 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:57,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:57,790 INFO L93 Difference]: Finished difference Result 422 states and 1164 transitions. [2022-01-18 05:12:57,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:57,791 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 [2022-01-18 05:12:57,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:57,791 INFO L225 Difference]: With dead ends: 422 [2022-01-18 05:12:57,791 INFO L226 Difference]: Without dead ends: 395 [2022-01-18 05:12:57,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2022-01-18 05:12:57,792 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 81 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:57,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 66 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:57,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2022-01-18 05:12:57,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 213. [2022-01-18 05:12:57,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 2.9339622641509435) internal successors, (622), 212 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:57,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 622 transitions. [2022-01-18 05:12:57,795 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 622 transitions. Word has length 18 [2022-01-18 05:12:57,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:57,795 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 622 transitions. [2022-01-18 05:12:57,795 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) [2022-01-18 05:12:57,795 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 622 transitions. [2022-01-18 05:12:57,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:57,795 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:57,795 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:57,810 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Ended with exit code 0 [2022-01-18 05:12:57,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable201 [2022-01-18 05:12:57,996 INFO L402 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:57,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:57,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1160002025, now seen corresponding path program 82 times [2022-01-18 05:12:57,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:57,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192637343] [2022-01-18 05:12:57,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:57,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:57,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:58,059 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:58,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:58,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192637343] [2022-01-18 05:12:58,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192637343] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:58,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916758638] [2022-01-18 05:12:58,060 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 05:12:58,060 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:58,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:58,061 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) [2022-01-18 05:12:58,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2022-01-18 05:12:58,081 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 05:12:58,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:12:58,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:12:58,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:58,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:58,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:58,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:58,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916758638] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:12:58,402 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:12:58,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 14 [2022-01-18 05:12:58,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988197055] [2022-01-18 05:12:58,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:12:58,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 05:12:58,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:58,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 05:12:58,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-01-18 05:12:58,402 INFO L87 Difference]: Start difference. First operand 213 states and 622 transitions. Second operand has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:58,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:58,603 INFO L93 Difference]: Finished difference Result 441 states and 1207 transitions. [2022-01-18 05:12:58,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:58,603 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 05:12:58,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:58,604 INFO L225 Difference]: With dead ends: 441 [2022-01-18 05:12:58,604 INFO L226 Difference]: Without dead ends: 422 [2022-01-18 05:12:58,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-01-18 05:12:58,604 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 148 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:58,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 112 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:58,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-01-18 05:12:58,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 219. [2022-01-18 05:12:58,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 2.977064220183486) internal successors, (649), 218 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:58,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 649 transitions. [2022-01-18 05:12:58,607 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 649 transitions. Word has length 18 [2022-01-18 05:12:58,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:58,607 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 649 transitions. [2022-01-18 05:12:58,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:58,607 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 649 transitions. [2022-01-18 05:12:58,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:58,608 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:58,608 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:58,623 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Ended with exit code 0 [2022-01-18 05:12:58,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable202 [2022-01-18 05:12:58,808 INFO L402 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:58,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:58,808 INFO L85 PathProgramCache]: Analyzing trace with hash 998782085, now seen corresponding path program 83 times [2022-01-18 05:12:58,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:58,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542177237] [2022-01-18 05:12:58,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:58,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:58,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:58,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:58,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:58,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542177237] [2022-01-18 05:12:58,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542177237] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:58,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979379723] [2022-01-18 05:12:58,866 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 05:12:58,866 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:58,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:58,867 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) [2022-01-18 05:12:58,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2022-01-18 05:12:58,887 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:12:58,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:12:58,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:12:58,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:58,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:58,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:12:59,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:59,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979379723] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:59,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 05:12:59,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 14 [2022-01-18 05:12:59,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137491606] [2022-01-18 05:12:59,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:12:59,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:12:59,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:12:59,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:12:59,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-01-18 05:12:59,253 INFO L87 Difference]: Start difference. First operand 219 states and 649 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:12:59,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:12:59,445 INFO L93 Difference]: Finished difference Result 445 states and 1207 transitions. [2022-01-18 05:12:59,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:12:59,445 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 [2022-01-18 05:12:59,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:12:59,446 INFO L225 Difference]: With dead ends: 445 [2022-01-18 05:12:59,446 INFO L226 Difference]: Without dead ends: 422 [2022-01-18 05:12:59,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-01-18 05:12:59,446 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 84 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:12:59,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 76 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:12:59,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-01-18 05:12:59,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 221. [2022-01-18 05:12:59,449 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) [2022-01-18 05:12:59,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 650 transitions. [2022-01-18 05:12:59,449 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 650 transitions. Word has length 18 [2022-01-18 05:12:59,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:12:59,454 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 650 transitions. [2022-01-18 05:12:59,454 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) [2022-01-18 05:12:59,454 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 650 transitions. [2022-01-18 05:12:59,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:12:59,454 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:12:59,454 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:12:59,469 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Ended with exit code 0 [2022-01-18 05:12:59,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203,92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:59,667 INFO L402 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:12:59,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:12:59,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1001868627, now seen corresponding path program 84 times [2022-01-18 05:12:59,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:12:59,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181646414] [2022-01-18 05:12:59,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:12:59,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:12:59,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:12:59,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:59,729 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:12:59,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181646414] [2022-01-18 05:12:59,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181646414] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:12:59,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517136716] [2022-01-18 05:12:59,729 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 05:12:59,729 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:12:59,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:12:59,731 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) [2022-01-18 05:12:59,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2022-01-18 05:12:59,752 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 05:12:59,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:12:59,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:12:59,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:12:59,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:12:59,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:00,126 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:00,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517136716] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:00,126 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:00,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 18 [2022-01-18 05:13:00,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687224079] [2022-01-18 05:13:00,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:00,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 05:13:00,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:00,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 05:13:00,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2022-01-18 05:13:00,127 INFO L87 Difference]: Start difference. First operand 221 states and 650 transitions. Second operand has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:00,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:00,365 INFO L93 Difference]: Finished difference Result 414 states and 1142 transitions. [2022-01-18 05:13:00,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:13:00,365 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 05:13:00,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:00,365 INFO L225 Difference]: With dead ends: 414 [2022-01-18 05:13:00,365 INFO L226 Difference]: Without dead ends: 395 [2022-01-18 05:13:00,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2022-01-18 05:13:00,366 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 185 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:00,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 146 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:00,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2022-01-18 05:13:00,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 218. [2022-01-18 05:13:00,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 2.9815668202764978) internal successors, (647), 217 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:00,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 647 transitions. [2022-01-18 05:13:00,369 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 647 transitions. Word has length 18 [2022-01-18 05:13:00,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:00,369 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 647 transitions. [2022-01-18 05:13:00,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:00,369 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 647 transitions. [2022-01-18 05:13:00,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:13:00,369 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:00,369 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:00,384 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Ended with exit code 0 [2022-01-18 05:13:00,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204,93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:00,570 INFO L402 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:00,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:00,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1144338477, now seen corresponding path program 85 times [2022-01-18 05:13:00,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:00,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676311745] [2022-01-18 05:13:00,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:00,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:00,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:00,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:00,615 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:00,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676311745] [2022-01-18 05:13:00,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676311745] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:00,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919726655] [2022-01-18 05:13:00,615 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 05:13:00,615 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:00,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:00,616 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) [2022-01-18 05:13:00,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2022-01-18 05:13:00,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:00,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:13:00,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:00,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:00,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:00,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:00,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919726655] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:00,954 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:00,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2022-01-18 05:13:00,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908945179] [2022-01-18 05:13:00,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:00,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-18 05:13:00,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:00,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-18 05:13:00,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-01-18 05:13:00,955 INFO L87 Difference]: Start difference. First operand 218 states and 647 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:01,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:01,102 INFO L93 Difference]: Finished difference Result 386 states and 1091 transitions. [2022-01-18 05:13:01,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:13:01,103 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 05:13:01,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:01,103 INFO L225 Difference]: With dead ends: 386 [2022-01-18 05:13:01,103 INFO L226 Difference]: Without dead ends: 367 [2022-01-18 05:13:01,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2022-01-18 05:13:01,103 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 81 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:01,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 109 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:01,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2022-01-18 05:13:01,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 214. [2022-01-18 05:13:01,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 2.943661971830986) internal successors, (627), 213 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:01,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 627 transitions. [2022-01-18 05:13:01,106 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 627 transitions. Word has length 18 [2022-01-18 05:13:01,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:01,106 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 627 transitions. [2022-01-18 05:13:01,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:01,106 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 627 transitions. [2022-01-18 05:13:01,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:13:01,107 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:01,107 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:01,122 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Ended with exit code 0 [2022-01-18 05:13:01,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205,94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:01,307 INFO L402 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:01,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:01,308 INFO L85 PathProgramCache]: Analyzing trace with hash 139296329, now seen corresponding path program 86 times [2022-01-18 05:13:01,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:01,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371631843] [2022-01-18 05:13:01,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:01,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:01,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:01,357 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:01,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:01,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371631843] [2022-01-18 05:13:01,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371631843] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:01,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303969155] [2022-01-18 05:13:01,357 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 05:13:01,357 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:01,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:01,358 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) [2022-01-18 05:13:01,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2022-01-18 05:13:01,380 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:13:01,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:01,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:13:01,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:01,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:01,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:01,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:01,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303969155] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:01,766 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 05:13:01,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 14 [2022-01-18 05:13:01,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731745529] [2022-01-18 05:13:01,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:13:01,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:13:01,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:01,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:13:01,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-01-18 05:13:01,767 INFO L87 Difference]: Start difference. First operand 214 states and 627 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:01,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:01,961 INFO L93 Difference]: Finished difference Result 422 states and 1166 transitions. [2022-01-18 05:13:01,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:13:01,961 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 [2022-01-18 05:13:01,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:01,961 INFO L225 Difference]: With dead ends: 422 [2022-01-18 05:13:01,961 INFO L226 Difference]: Without dead ends: 399 [2022-01-18 05:13:01,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2022-01-18 05:13:01,962 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 74 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:01,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 73 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:01,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2022-01-18 05:13:01,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 222. [2022-01-18 05:13:01,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 221 states have (on average 2.936651583710407) internal successors, (649), 221 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:01,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 649 transitions. [2022-01-18 05:13:01,965 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 649 transitions. Word has length 18 [2022-01-18 05:13:01,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:01,965 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 649 transitions. [2022-01-18 05:13:01,965 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) [2022-01-18 05:13:01,965 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 649 transitions. [2022-01-18 05:13:01,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:13:01,965 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:01,965 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:01,981 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Forceful destruction successful, exit code 0 [2022-01-18 05:13:02,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable206 [2022-01-18 05:13:02,166 INFO L402 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:02,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:02,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1038820091, now seen corresponding path program 87 times [2022-01-18 05:13:02,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:02,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955842747] [2022-01-18 05:13:02,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:02,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:02,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:02,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:02,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:02,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955842747] [2022-01-18 05:13:02,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955842747] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:02,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157468430] [2022-01-18 05:13:02,221 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:13:02,222 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:02,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:02,222 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) [2022-01-18 05:13:02,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2022-01-18 05:13:02,244 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 05:13:02,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:02,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:13:02,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:02,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:02,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:02,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:02,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157468430] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:02,582 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:02,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2022-01-18 05:13:02,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789616392] [2022-01-18 05:13:02,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:02,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 05:13:02,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:02,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 05:13:02,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-01-18 05:13:02,583 INFO L87 Difference]: Start difference. First operand 222 states and 649 transitions. Second operand has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:02,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:02,780 INFO L93 Difference]: Finished difference Result 406 states and 1136 transitions. [2022-01-18 05:13:02,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:13:02,781 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 05:13:02,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:02,781 INFO L225 Difference]: With dead ends: 406 [2022-01-18 05:13:02,781 INFO L226 Difference]: Without dead ends: 387 [2022-01-18 05:13:02,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-01-18 05:13:02,781 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 79 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:02,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 120 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:02,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2022-01-18 05:13:02,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 213. [2022-01-18 05:13:02,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 2.9339622641509435) internal successors, (622), 212 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:02,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 622 transitions. [2022-01-18 05:13:02,784 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 622 transitions. Word has length 18 [2022-01-18 05:13:02,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:02,784 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 622 transitions. [2022-01-18 05:13:02,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:02,785 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 622 transitions. [2022-01-18 05:13:02,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:13:02,785 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:02,785 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:02,800 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Ended with exit code 0 [2022-01-18 05:13:02,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable207 [2022-01-18 05:13:02,985 INFO L402 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:02,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:02,986 INFO L85 PathProgramCache]: Analyzing trace with hash 320555571, now seen corresponding path program 88 times [2022-01-18 05:13:02,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:02,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106365802] [2022-01-18 05:13:02,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:02,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:02,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:03,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:03,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:03,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106365802] [2022-01-18 05:13:03,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106365802] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:03,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996189785] [2022-01-18 05:13:03,035 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 05:13:03,035 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:03,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:03,036 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) [2022-01-18 05:13:03,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2022-01-18 05:13:03,056 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 05:13:03,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:03,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:13:03,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:03,139 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:03,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:03,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:03,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996189785] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:03,433 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 05:13:03,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 14 [2022-01-18 05:13:03,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644211306] [2022-01-18 05:13:03,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:13:03,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:13:03,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:03,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:13:03,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-01-18 05:13:03,433 INFO L87 Difference]: Start difference. First operand 213 states and 622 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:03,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:03,667 INFO L93 Difference]: Finished difference Result 366 states and 1018 transitions. [2022-01-18 05:13:03,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:13:03,667 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 [2022-01-18 05:13:03,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:03,667 INFO L225 Difference]: With dead ends: 366 [2022-01-18 05:13:03,667 INFO L226 Difference]: Without dead ends: 339 [2022-01-18 05:13:03,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2022-01-18 05:13:03,668 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 69 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:03,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 75 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:03,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2022-01-18 05:13:03,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 215. [2022-01-18 05:13:03,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 2.9299065420560746) internal successors, (627), 214 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:03,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 627 transitions. [2022-01-18 05:13:03,670 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 627 transitions. Word has length 18 [2022-01-18 05:13:03,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:03,671 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 627 transitions. [2022-01-18 05:13:03,671 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) [2022-01-18 05:13:03,671 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 627 transitions. [2022-01-18 05:13:03,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:13:03,671 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:03,671 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:03,686 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Ended with exit code 0 [2022-01-18 05:13:03,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208,97 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:03,871 INFO L402 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:03,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:03,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1476863543, now seen corresponding path program 89 times [2022-01-18 05:13:03,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:03,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032220555] [2022-01-18 05:13:03,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:03,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:03,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:03,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:03,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:03,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032220555] [2022-01-18 05:13:03,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032220555] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:03,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695998371] [2022-01-18 05:13:03,924 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 05:13:03,924 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:03,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:03,925 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) [2022-01-18 05:13:03,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2022-01-18 05:13:03,947 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:13:03,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:03,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:13:03,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:04,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:04,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:04,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:04,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [695998371] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:04,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 05:13:04,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 15 [2022-01-18 05:13:04,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596206413] [2022-01-18 05:13:04,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:13:04,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:13:04,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:04,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:13:04,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-01-18 05:13:04,351 INFO L87 Difference]: Start difference. First operand 215 states and 627 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:04,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:04,585 INFO L93 Difference]: Finished difference Result 358 states and 1000 transitions. [2022-01-18 05:13:04,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:13:04,585 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 [2022-01-18 05:13:04,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:04,585 INFO L225 Difference]: With dead ends: 358 [2022-01-18 05:13:04,585 INFO L226 Difference]: Without dead ends: 335 [2022-01-18 05:13:04,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2022-01-18 05:13:04,586 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 71 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:04,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 75 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:04,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2022-01-18 05:13:04,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 223. [2022-01-18 05:13:04,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 222 states have (on average 2.9234234234234235) internal successors, (649), 222 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:04,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 649 transitions. [2022-01-18 05:13:04,588 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 649 transitions. Word has length 18 [2022-01-18 05:13:04,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:04,588 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 649 transitions. [2022-01-18 05:13:04,589 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) [2022-01-18 05:13:04,589 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 649 transitions. [2022-01-18 05:13:04,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 05:13:04,589 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:04,589 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:04,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Forceful destruction successful, exit code 0 [2022-01-18 05:13:04,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209,98 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:04,791 INFO L402 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:04,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:04,791 INFO L85 PathProgramCache]: Analyzing trace with hash 298747123, now seen corresponding path program 90 times [2022-01-18 05:13:04,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:04,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029931639] [2022-01-18 05:13:04,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:04,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:04,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:04,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:04,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:04,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029931639] [2022-01-18 05:13:04,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029931639] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:04,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918997216] [2022-01-18 05:13:04,846 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 05:13:04,846 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:04,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:04,848 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) [2022-01-18 05:13:04,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2022-01-18 05:13:04,868 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 05:13:04,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:04,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:13:04,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:04,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:04,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:05,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:05,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918997216] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:05,272 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:05,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2022-01-18 05:13:05,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110009445] [2022-01-18 05:13:05,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:05,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 05:13:05,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:05,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 05:13:05,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-01-18 05:13:05,273 INFO L87 Difference]: Start difference. First operand 223 states and 649 transitions. Second operand has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:05,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:05,516 INFO L93 Difference]: Finished difference Result 333 states and 948 transitions. [2022-01-18 05:13:05,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:13:05,517 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 05:13:05,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:05,517 INFO L225 Difference]: With dead ends: 333 [2022-01-18 05:13:05,517 INFO L226 Difference]: Without dead ends: 314 [2022-01-18 05:13:05,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2022-01-18 05:13:05,517 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 83 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:05,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 112 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:05,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2022-01-18 05:13:05,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 212. [2022-01-18 05:13:05,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 2.924170616113744) internal successors, (617), 211 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:05,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 617 transitions. [2022-01-18 05:13:05,520 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 617 transitions. Word has length 18 [2022-01-18 05:13:05,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:05,520 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 617 transitions. [2022-01-18 05:13:05,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:05,520 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 617 transitions. [2022-01-18 05:13:05,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:05,520 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:05,521 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:05,535 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Ended with exit code 0 [2022-01-18 05:13:05,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable210 [2022-01-18 05:13:05,721 INFO L402 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:05,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:05,721 INFO L85 PathProgramCache]: Analyzing trace with hash 451499450, now seen corresponding path program 1 times [2022-01-18 05:13:05,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:05,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342647691] [2022-01-18 05:13:05,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:05,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:05,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:05,745 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:05,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:05,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342647691] [2022-01-18 05:13:05,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342647691] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:05,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028505664] [2022-01-18 05:13:05,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:05,745 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:05,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:05,746 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) [2022-01-18 05:13:05,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2022-01-18 05:13:05,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:05,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:05,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:05,813 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:05,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:05,850 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:05,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028505664] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:05,850 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:05,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-01-18 05:13:05,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688461307] [2022-01-18 05:13:05,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:05,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 05:13:05,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:05,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 05:13:05,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-01-18 05:13:05,850 INFO L87 Difference]: Start difference. First operand 212 states and 617 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:05,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:05,942 INFO L93 Difference]: Finished difference Result 306 states and 874 transitions. [2022-01-18 05:13:05,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:05,942 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:05,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:05,943 INFO L225 Difference]: With dead ends: 306 [2022-01-18 05:13:05,943 INFO L226 Difference]: Without dead ends: 282 [2022-01-18 05:13:05,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-01-18 05:13:05,943 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 77 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:05,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 63 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:05,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-01-18 05:13:05,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 219. [2022-01-18 05:13:05,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 2.926605504587156) internal successors, (638), 218 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:05,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 638 transitions. [2022-01-18 05:13:05,946 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 638 transitions. Word has length 19 [2022-01-18 05:13:05,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:05,946 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 638 transitions. [2022-01-18 05:13:05,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:05,946 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 638 transitions. [2022-01-18 05:13:05,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:05,946 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:05,946 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:05,961 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Ended with exit code 0 [2022-01-18 05:13:06,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211,100 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:06,146 INFO L402 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:06,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:06,147 INFO L85 PathProgramCache]: Analyzing trace with hash -809472170, now seen corresponding path program 1 times [2022-01-18 05:13:06,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:06,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231487660] [2022-01-18 05:13:06,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:06,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:06,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:06,175 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:06,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:06,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231487660] [2022-01-18 05:13:06,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231487660] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:06,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768681923] [2022-01-18 05:13:06,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:06,176 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:06,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:06,177 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) [2022-01-18 05:13:06,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2022-01-18 05:13:06,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:06,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:06,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:06,246 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:06,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:06,287 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:06,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768681923] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:06,288 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:06,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8 [2022-01-18 05:13:06,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976893782] [2022-01-18 05:13:06,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:06,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:13:06,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:06,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:13:06,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:13:06,288 INFO L87 Difference]: Start difference. First operand 219 states and 638 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:06,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:06,386 INFO L93 Difference]: Finished difference Result 359 states and 1037 transitions. [2022-01-18 05:13:06,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:06,386 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:06,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:06,387 INFO L225 Difference]: With dead ends: 359 [2022-01-18 05:13:06,387 INFO L226 Difference]: Without dead ends: 359 [2022-01-18 05:13:06,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-18 05:13:06,387 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 69 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:06,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 69 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:06,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-01-18 05:13:06,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 230. [2022-01-18 05:13:06,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 229 states have (on average 2.978165938864629) internal successors, (682), 229 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:06,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 682 transitions. [2022-01-18 05:13:06,390 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 682 transitions. Word has length 19 [2022-01-18 05:13:06,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:06,390 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 682 transitions. [2022-01-18 05:13:06,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:06,390 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 682 transitions. [2022-01-18 05:13:06,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:06,391 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:06,391 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:06,406 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Ended with exit code 0 [2022-01-18 05:13:06,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable212 [2022-01-18 05:13:06,591 INFO L402 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:06,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:06,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1582744442, now seen corresponding path program 2 times [2022-01-18 05:13:06,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:06,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296629793] [2022-01-18 05:13:06,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:06,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:06,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:06,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:06,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:06,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296629793] [2022-01-18 05:13:06,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296629793] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:06,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949779801] [2022-01-18 05:13:06,625 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 05:13:06,626 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:06,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:06,626 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) [2022-01-18 05:13:06,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2022-01-18 05:13:06,649 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:13:06,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:06,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:06,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:06,717 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:06,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:06,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:06,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949779801] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:06,770 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:06,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-01-18 05:13:06,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277731708] [2022-01-18 05:13:06,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:06,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 05:13:06,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:06,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 05:13:06,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:13:06,771 INFO L87 Difference]: Start difference. First operand 230 states and 682 transitions. Second operand has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:06,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:06,900 INFO L93 Difference]: Finished difference Result 356 states and 1028 transitions. [2022-01-18 05:13:06,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:06,901 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:06,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:06,901 INFO L225 Difference]: With dead ends: 356 [2022-01-18 05:13:06,901 INFO L226 Difference]: Without dead ends: 356 [2022-01-18 05:13:06,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-01-18 05:13:06,902 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 62 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:06,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 100 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:06,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-01-18 05:13:06,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 238. [2022-01-18 05:13:06,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 3.029535864978903) internal successors, (718), 237 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:06,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 718 transitions. [2022-01-18 05:13:06,905 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 718 transitions. Word has length 19 [2022-01-18 05:13:06,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:06,905 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 718 transitions. [2022-01-18 05:13:06,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:06,905 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 718 transitions. [2022-01-18 05:13:06,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:06,905 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:06,905 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:06,920 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Ended with exit code 0 [2022-01-18 05:13:07,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable213 [2022-01-18 05:13:07,106 INFO L402 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:07,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:07,106 INFO L85 PathProgramCache]: Analyzing trace with hash -2077874438, now seen corresponding path program 2 times [2022-01-18 05:13:07,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:07,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381504322] [2022-01-18 05:13:07,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:07,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:07,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:07,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:07,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:07,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381504322] [2022-01-18 05:13:07,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381504322] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:07,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254640154] [2022-01-18 05:13:07,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 05:13:07,133 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:07,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:07,134 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) [2022-01-18 05:13:07,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2022-01-18 05:13:07,157 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:13:07,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:07,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:07,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:07,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:07,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:07,248 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:07,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254640154] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:07,248 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:07,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-01-18 05:13:07,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268116363] [2022-01-18 05:13:07,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:07,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 05:13:07,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:07,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 05:13:07,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-01-18 05:13:07,248 INFO L87 Difference]: Start difference. First operand 238 states and 718 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:07,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:07,338 INFO L93 Difference]: Finished difference Result 375 states and 1077 transitions. [2022-01-18 05:13:07,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:07,339 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:07,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:07,339 INFO L225 Difference]: With dead ends: 375 [2022-01-18 05:13:07,339 INFO L226 Difference]: Without dead ends: 367 [2022-01-18 05:13:07,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-01-18 05:13:07,340 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 80 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:07,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 60 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:07,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2022-01-18 05:13:07,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 250. [2022-01-18 05:13:07,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 249 states have (on average 3.0281124497991967) internal successors, (754), 249 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:07,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 754 transitions. [2022-01-18 05:13:07,343 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 754 transitions. Word has length 19 [2022-01-18 05:13:07,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:07,343 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 754 transitions. [2022-01-18 05:13:07,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:07,343 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 754 transitions. [2022-01-18 05:13:07,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:07,343 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:07,343 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:07,359 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Ended with exit code 0 [2022-01-18 05:13:07,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable214 [2022-01-18 05:13:07,544 INFO L402 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:07,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:07,544 INFO L85 PathProgramCache]: Analyzing trace with hash -2118171500, now seen corresponding path program 3 times [2022-01-18 05:13:07,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:07,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986131639] [2022-01-18 05:13:07,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:07,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:07,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:07,573 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:07,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:07,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986131639] [2022-01-18 05:13:07,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986131639] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:07,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129917341] [2022-01-18 05:13:07,573 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:13:07,573 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:07,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:07,574 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) [2022-01-18 05:13:07,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2022-01-18 05:13:07,596 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 05:13:07,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:07,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:07,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:07,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:07,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:07,697 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:07,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129917341] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:07,697 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:07,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-01-18 05:13:07,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094509558] [2022-01-18 05:13:07,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:07,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 05:13:07,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:07,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 05:13:07,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:13:07,697 INFO L87 Difference]: Start difference. First operand 250 states and 754 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:07,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:07,818 INFO L93 Difference]: Finished difference Result 330 states and 966 transitions. [2022-01-18 05:13:07,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:07,819 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:07,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:07,819 INFO L225 Difference]: With dead ends: 330 [2022-01-18 05:13:07,819 INFO L226 Difference]: Without dead ends: 321 [2022-01-18 05:13:07,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2022-01-18 05:13:07,820 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 56 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:07,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 101 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:07,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-01-18 05:13:07,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 250. [2022-01-18 05:13:07,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 249 states have (on average 3.0120481927710845) internal successors, (750), 249 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:07,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 750 transitions. [2022-01-18 05:13:07,823 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 750 transitions. Word has length 19 [2022-01-18 05:13:07,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:07,823 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 750 transitions. [2022-01-18 05:13:07,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:07,823 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 750 transitions. [2022-01-18 05:13:07,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:07,823 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:07,823 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:07,839 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Ended with exit code 0 [2022-01-18 05:13:08,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215,104 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:08,024 INFO L402 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:08,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:08,024 INFO L85 PathProgramCache]: Analyzing trace with hash 222627702, now seen corresponding path program 3 times [2022-01-18 05:13:08,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:08,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270684837] [2022-01-18 05:13:08,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:08,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:08,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:08,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:08,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:08,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270684837] [2022-01-18 05:13:08,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270684837] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:08,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555604104] [2022-01-18 05:13:08,058 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:13:08,058 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:08,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:08,059 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) [2022-01-18 05:13:08,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2022-01-18 05:13:08,082 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 05:13:08,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:08,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:08,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:08,132 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:08,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:08,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:08,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555604104] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:08,175 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:08,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-01-18 05:13:08,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996628623] [2022-01-18 05:13:08,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:08,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 05:13:08,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:08,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 05:13:08,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-18 05:13:08,175 INFO L87 Difference]: Start difference. First operand 250 states and 750 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:08,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:08,295 INFO L93 Difference]: Finished difference Result 351 states and 1024 transitions. [2022-01-18 05:13:08,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:08,295 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:08,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:08,296 INFO L225 Difference]: With dead ends: 351 [2022-01-18 05:13:08,296 INFO L226 Difference]: Without dead ends: 351 [2022-01-18 05:13:08,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2022-01-18 05:13:08,296 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 58 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:08,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 83 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:08,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2022-01-18 05:13:08,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 238. [2022-01-18 05:13:08,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 2.9957805907172994) internal successors, (710), 237 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:08,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 710 transitions. [2022-01-18 05:13:08,299 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 710 transitions. Word has length 19 [2022-01-18 05:13:08,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:08,299 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 710 transitions. [2022-01-18 05:13:08,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:08,299 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 710 transitions. [2022-01-18 05:13:08,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:08,300 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:08,300 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:08,315 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Ended with exit code 0 [2022-01-18 05:13:08,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216,105 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:08,500 INFO L402 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:08,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:08,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1233267398, now seen corresponding path program 4 times [2022-01-18 05:13:08,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:08,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643857685] [2022-01-18 05:13:08,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:08,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:08,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:08,529 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:08,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:08,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643857685] [2022-01-18 05:13:08,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643857685] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:08,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675880731] [2022-01-18 05:13:08,530 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 05:13:08,530 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:08,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:08,531 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) [2022-01-18 05:13:08,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2022-01-18 05:13:08,553 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 05:13:08,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:08,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:08,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:08,598 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:08,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:08,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:08,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675880731] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:08,640 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:08,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8 [2022-01-18 05:13:08,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159058680] [2022-01-18 05:13:08,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:08,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:13:08,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:08,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:13:08,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:13:08,640 INFO L87 Difference]: Start difference. First operand 238 states and 710 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:08,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:08,734 INFO L93 Difference]: Finished difference Result 387 states and 1134 transitions. [2022-01-18 05:13:08,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:08,735 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:08,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:08,735 INFO L225 Difference]: With dead ends: 387 [2022-01-18 05:13:08,735 INFO L226 Difference]: Without dead ends: 387 [2022-01-18 05:13:08,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-18 05:13:08,735 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 66 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:08,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 60 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:08,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2022-01-18 05:13:08,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 246. [2022-01-18 05:13:08,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 245 states have (on average 3.0285714285714285) internal successors, (742), 245 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:08,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 742 transitions. [2022-01-18 05:13:08,738 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 742 transitions. Word has length 19 [2022-01-18 05:13:08,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:08,739 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 742 transitions. [2022-01-18 05:13:08,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:08,739 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 742 transitions. [2022-01-18 05:13:08,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:08,739 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:08,739 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:08,754 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Ended with exit code 0 [2022-01-18 05:13:08,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable217 [2022-01-18 05:13:08,939 INFO L402 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:08,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:08,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1314255648, now seen corresponding path program 4 times [2022-01-18 05:13:08,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:08,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534100093] [2022-01-18 05:13:08,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:08,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:08,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:08,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:08,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:08,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534100093] [2022-01-18 05:13:08,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534100093] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:08,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235163058] [2022-01-18 05:13:08,965 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 05:13:08,965 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:08,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:08,966 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) [2022-01-18 05:13:08,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2022-01-18 05:13:08,988 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 05:13:08,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:08,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:08,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:09,033 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:09,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:09,069 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:09,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235163058] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:09,070 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:09,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-01-18 05:13:09,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464774350] [2022-01-18 05:13:09,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:09,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 05:13:09,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:09,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 05:13:09,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-01-18 05:13:09,070 INFO L87 Difference]: Start difference. First operand 246 states and 742 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:09,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:09,161 INFO L93 Difference]: Finished difference Result 325 states and 953 transitions. [2022-01-18 05:13:09,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:09,161 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:09,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:09,161 INFO L225 Difference]: With dead ends: 325 [2022-01-18 05:13:09,161 INFO L226 Difference]: Without dead ends: 309 [2022-01-18 05:13:09,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-01-18 05:13:09,162 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 63 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:09,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 63 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:09,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2022-01-18 05:13:09,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 246. [2022-01-18 05:13:09,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 245 states have (on average 3.012244897959184) internal successors, (738), 245 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:09,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 738 transitions. [2022-01-18 05:13:09,171 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 738 transitions. Word has length 19 [2022-01-18 05:13:09,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:09,171 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 738 transitions. [2022-01-18 05:13:09,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:09,171 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 738 transitions. [2022-01-18 05:13:09,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:09,171 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:09,171 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:09,187 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Ended with exit code 0 [2022-01-18 05:13:09,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218,107 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:09,372 INFO L402 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:09,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:09,372 INFO L85 PathProgramCache]: Analyzing trace with hash -2124477532, now seen corresponding path program 5 times [2022-01-18 05:13:09,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:09,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961624480] [2022-01-18 05:13:09,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:09,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:09,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:09,403 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:09,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:09,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961624480] [2022-01-18 05:13:09,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961624480] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:09,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974894986] [2022-01-18 05:13:09,404 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 05:13:09,404 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:09,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:09,405 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) [2022-01-18 05:13:09,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2022-01-18 05:13:09,427 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:13:09,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:09,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:09,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:09,486 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:09,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:09,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:09,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974894986] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:09,534 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:09,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-01-18 05:13:09,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965560088] [2022-01-18 05:13:09,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:09,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 05:13:09,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:09,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 05:13:09,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-18 05:13:09,534 INFO L87 Difference]: Start difference. First operand 246 states and 738 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:09,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:09,629 INFO L93 Difference]: Finished difference Result 396 states and 1156 transitions. [2022-01-18 05:13:09,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:09,629 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:09,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:09,630 INFO L225 Difference]: With dead ends: 396 [2022-01-18 05:13:09,630 INFO L226 Difference]: Without dead ends: 396 [2022-01-18 05:13:09,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2022-01-18 05:13:09,630 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 89 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:09,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 56 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:09,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2022-01-18 05:13:09,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 250. [2022-01-18 05:13:09,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 249 states have (on average 3.0441767068273093) internal successors, (758), 249 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:09,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 758 transitions. [2022-01-18 05:13:09,633 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 758 transitions. Word has length 19 [2022-01-18 05:13:09,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:09,633 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 758 transitions. [2022-01-18 05:13:09,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:09,634 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 758 transitions. [2022-01-18 05:13:09,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:09,634 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:09,634 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:09,649 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Ended with exit code 0 [2022-01-18 05:13:09,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219,108 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:09,834 INFO L402 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:09,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:09,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1490129116, now seen corresponding path program 5 times [2022-01-18 05:13:09,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:09,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026729736] [2022-01-18 05:13:09,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:09,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:09,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:09,863 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:09,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:09,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026729736] [2022-01-18 05:13:09,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026729736] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:09,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764795892] [2022-01-18 05:13:09,863 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 05:13:09,863 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:09,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:09,864 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) [2022-01-18 05:13:09,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2022-01-18 05:13:09,886 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:13:09,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:09,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:09,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:09,944 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:09,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:09,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:09,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764795892] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:09,989 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:09,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-01-18 05:13:09,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653914638] [2022-01-18 05:13:09,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:09,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 05:13:09,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:09,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 05:13:09,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:13:09,989 INFO L87 Difference]: Start difference. First operand 250 states and 758 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:10,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:10,121 INFO L93 Difference]: Finished difference Result 372 states and 1080 transitions. [2022-01-18 05:13:10,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:10,122 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:10,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:10,122 INFO L225 Difference]: With dead ends: 372 [2022-01-18 05:13:10,122 INFO L226 Difference]: Without dead ends: 364 [2022-01-18 05:13:10,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2022-01-18 05:13:10,122 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 62 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:10,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 99 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:10,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2022-01-18 05:13:10,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 262. [2022-01-18 05:13:10,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 261 states have (on average 3.0421455938697317) internal successors, (794), 261 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:10,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 794 transitions. [2022-01-18 05:13:10,126 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 794 transitions. Word has length 19 [2022-01-18 05:13:10,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:10,126 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 794 transitions. [2022-01-18 05:13:10,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:10,126 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 794 transitions. [2022-01-18 05:13:10,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:10,126 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:10,126 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:10,143 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Ended with exit code 0 [2022-01-18 05:13:10,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220,109 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:10,327 INFO L402 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:10,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:10,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1530426178, now seen corresponding path program 6 times [2022-01-18 05:13:10,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:10,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95445677] [2022-01-18 05:13:10,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:10,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:10,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:10,360 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:10,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:10,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95445677] [2022-01-18 05:13:10,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95445677] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:10,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773077933] [2022-01-18 05:13:10,360 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 05:13:10,361 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:10,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:10,361 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) [2022-01-18 05:13:10,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2022-01-18 05:13:10,384 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 05:13:10,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:10,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:10,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:10,431 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:10,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:10,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:10,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773077933] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:10,471 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:10,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-01-18 05:13:10,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524084591] [2022-01-18 05:13:10,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:10,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 05:13:10,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:10,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 05:13:10,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-01-18 05:13:10,472 INFO L87 Difference]: Start difference. First operand 262 states and 794 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:10,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:10,570 INFO L93 Difference]: Finished difference Result 354 states and 1042 transitions. [2022-01-18 05:13:10,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:10,570 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:10,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:10,570 INFO L225 Difference]: With dead ends: 354 [2022-01-18 05:13:10,570 INFO L226 Difference]: Without dead ends: 345 [2022-01-18 05:13:10,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-01-18 05:13:10,571 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 64 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:10,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 71 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:10,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2022-01-18 05:13:10,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 262. [2022-01-18 05:13:10,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 261 states have (on average 3.0268199233716473) internal successors, (790), 261 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:10,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 790 transitions. [2022-01-18 05:13:10,574 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 790 transitions. Word has length 19 [2022-01-18 05:13:10,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:10,574 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 790 transitions. [2022-01-18 05:13:10,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:10,574 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 790 transitions. [2022-01-18 05:13:10,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:10,574 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:10,574 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:10,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Forceful destruction successful, exit code 0 [2022-01-18 05:13:10,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable221 [2022-01-18 05:13:10,775 INFO L402 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:10,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:10,775 INFO L85 PathProgramCache]: Analyzing trace with hash 810373024, now seen corresponding path program 6 times [2022-01-18 05:13:10,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:10,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353022226] [2022-01-18 05:13:10,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:10,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:10,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:10,810 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:10,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:10,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353022226] [2022-01-18 05:13:10,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353022226] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:10,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820013706] [2022-01-18 05:13:10,810 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 05:13:10,810 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:10,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:10,811 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) [2022-01-18 05:13:10,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2022-01-18 05:13:10,834 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 05:13:10,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:10,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:10,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:10,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:10,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:10,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:10,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820013706] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:10,964 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:10,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-01-18 05:13:10,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521996626] [2022-01-18 05:13:10,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:10,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 05:13:10,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:10,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 05:13:10,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:13:10,965 INFO L87 Difference]: Start difference. First operand 262 states and 790 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:11,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:11,064 INFO L93 Difference]: Finished difference Result 326 states and 967 transitions. [2022-01-18 05:13:11,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:11,064 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:11,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:11,065 INFO L225 Difference]: With dead ends: 326 [2022-01-18 05:13:11,065 INFO L226 Difference]: Without dead ends: 326 [2022-01-18 05:13:11,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-01-18 05:13:11,065 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 79 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:11,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 61 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:11,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2022-01-18 05:13:11,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 246. [2022-01-18 05:13:11,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 245 states have (on average 3.012244897959184) internal successors, (738), 245 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:11,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 738 transitions. [2022-01-18 05:13:11,068 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 738 transitions. Word has length 19 [2022-01-18 05:13:11,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:11,068 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 738 transitions. [2022-01-18 05:13:11,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:11,068 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 738 transitions. [2022-01-18 05:13:11,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:11,068 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:11,068 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:11,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Forceful destruction successful, exit code 0 [2022-01-18 05:13:11,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable222 [2022-01-18 05:13:11,269 INFO L402 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:11,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:11,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1440270940, now seen corresponding path program 7 times [2022-01-18 05:13:11,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:11,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236939325] [2022-01-18 05:13:11,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:11,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:11,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:11,307 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:11,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:11,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236939325] [2022-01-18 05:13:11,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236939325] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:11,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815303904] [2022-01-18 05:13:11,308 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 05:13:11,308 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:11,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:11,309 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) [2022-01-18 05:13:11,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2022-01-18 05:13:11,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:11,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:11,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:11,392 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:11,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:11,444 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:11,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815303904] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:11,445 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:11,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-01-18 05:13:11,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445798573] [2022-01-18 05:13:11,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:11,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 05:13:11,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:11,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 05:13:11,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:13:11,445 INFO L87 Difference]: Start difference. First operand 246 states and 738 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:11,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:11,538 INFO L93 Difference]: Finished difference Result 492 states and 1411 transitions. [2022-01-18 05:13:11,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:11,538 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:11,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:11,539 INFO L225 Difference]: With dead ends: 492 [2022-01-18 05:13:11,539 INFO L226 Difference]: Without dead ends: 468 [2022-01-18 05:13:11,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2022-01-18 05:13:11,539 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 90 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:11,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 75 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:11,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2022-01-18 05:13:11,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 255. [2022-01-18 05:13:11,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 3.0196850393700787) internal successors, (767), 254 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:11,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 767 transitions. [2022-01-18 05:13:11,543 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 767 transitions. Word has length 19 [2022-01-18 05:13:11,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:11,543 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 767 transitions. [2022-01-18 05:13:11,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:11,543 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 767 transitions. [2022-01-18 05:13:11,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:11,543 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:11,543 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:11,559 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Ended with exit code 0 [2022-01-18 05:13:11,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable223 [2022-01-18 05:13:11,744 INFO L402 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:11,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:11,744 INFO L85 PathProgramCache]: Analyzing trace with hash 179299320, now seen corresponding path program 7 times [2022-01-18 05:13:11,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:11,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849955951] [2022-01-18 05:13:11,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:11,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:11,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:11,775 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:11,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:11,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849955951] [2022-01-18 05:13:11,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849955951] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:11,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574154151] [2022-01-18 05:13:11,775 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 05:13:11,775 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:11,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:11,776 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) [2022-01-18 05:13:11,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2022-01-18 05:13:11,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:11,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:11,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:11,851 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:11,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:11,911 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:11,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574154151] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:11,911 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:11,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8 [2022-01-18 05:13:11,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587435656] [2022-01-18 05:13:11,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:11,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:13:11,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:11,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:13:11,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:13:11,918 INFO L87 Difference]: Start difference. First operand 255 states and 767 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:12,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:12,007 INFO L93 Difference]: Finished difference Result 608 states and 1788 transitions. [2022-01-18 05:13:12,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:12,008 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:12,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:12,008 INFO L225 Difference]: With dead ends: 608 [2022-01-18 05:13:12,008 INFO L226 Difference]: Without dead ends: 608 [2022-01-18 05:13:12,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:12,009 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 77 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:12,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 64 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:12,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2022-01-18 05:13:12,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 264. [2022-01-18 05:13:12,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 263 states have (on average 3.053231939163498) internal successors, (803), 263 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:12,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 803 transitions. [2022-01-18 05:13:12,012 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 803 transitions. Word has length 19 [2022-01-18 05:13:12,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:12,013 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 803 transitions. [2022-01-18 05:13:12,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:12,013 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 803 transitions. [2022-01-18 05:13:12,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:12,013 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:12,013 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:12,028 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Ended with exit code 0 [2022-01-18 05:13:12,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable224 [2022-01-18 05:13:12,213 INFO L402 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:12,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:12,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1723451364, now seen corresponding path program 8 times [2022-01-18 05:13:12,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:12,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359811733] [2022-01-18 05:13:12,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:12,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:12,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:12,254 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:12,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:12,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359811733] [2022-01-18 05:13:12,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359811733] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:12,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525701761] [2022-01-18 05:13:12,254 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 05:13:12,254 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:12,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:12,255 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) [2022-01-18 05:13:12,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2022-01-18 05:13:12,277 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:13:12,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:12,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:12,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:12,363 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:12,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:12,434 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:12,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525701761] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:12,434 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:12,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-01-18 05:13:12,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013397520] [2022-01-18 05:13:12,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:12,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 05:13:12,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:12,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 05:13:12,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:12,435 INFO L87 Difference]: Start difference. First operand 264 states and 803 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:12,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:12,541 INFO L93 Difference]: Finished difference Result 517 states and 1514 transitions. [2022-01-18 05:13:12,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:12,542 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:12,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:12,542 INFO L225 Difference]: With dead ends: 517 [2022-01-18 05:13:12,542 INFO L226 Difference]: Without dead ends: 517 [2022-01-18 05:13:12,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2022-01-18 05:13:12,543 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 106 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:12,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 83 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:12,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2022-01-18 05:13:12,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 268. [2022-01-18 05:13:12,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 267 states have (on average 3.0823970037453186) internal successors, (823), 267 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:12,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 823 transitions. [2022-01-18 05:13:12,546 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 823 transitions. Word has length 19 [2022-01-18 05:13:12,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:12,546 INFO L470 AbstractCegarLoop]: Abstraction has 268 states and 823 transitions. [2022-01-18 05:13:12,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:12,547 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 823 transitions. [2022-01-18 05:13:12,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:12,547 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:12,547 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:12,562 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Ended with exit code 0 [2022-01-18 05:13:12,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225,114 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:12,747 INFO L402 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:12,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:12,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1089102948, now seen corresponding path program 8 times [2022-01-18 05:13:12,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:12,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110209390] [2022-01-18 05:13:12,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:12,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:12,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:12,777 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:12,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:12,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110209390] [2022-01-18 05:13:12,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110209390] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:12,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506670430] [2022-01-18 05:13:12,777 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 05:13:12,777 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:12,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:12,778 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) [2022-01-18 05:13:12,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2022-01-18 05:13:12,801 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:13:12,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:12,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:12,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:12,857 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:12,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:12,907 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:12,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506670430] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:12,907 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:12,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-01-18 05:13:12,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788420339] [2022-01-18 05:13:12,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:12,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 05:13:12,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:12,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 05:13:12,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-01-18 05:13:12,908 INFO L87 Difference]: Start difference. First operand 268 states and 823 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:13,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:13,004 INFO L93 Difference]: Finished difference Result 554 states and 1618 transitions. [2022-01-18 05:13:13,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:13,004 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:13,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:13,005 INFO L225 Difference]: With dead ends: 554 [2022-01-18 05:13:13,005 INFO L226 Difference]: Without dead ends: 546 [2022-01-18 05:13:13,005 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2022-01-18 05:13:13,005 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 82 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:13,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 72 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:13,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2022-01-18 05:13:13,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 280. [2022-01-18 05:13:13,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 279 states have (on average 3.078853046594982) internal successors, (859), 279 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:13,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 859 transitions. [2022-01-18 05:13:13,009 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 859 transitions. Word has length 19 [2022-01-18 05:13:13,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:13,009 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 859 transitions. [2022-01-18 05:13:13,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:13,009 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 859 transitions. [2022-01-18 05:13:13,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:13,009 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:13,010 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:13,025 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Forceful destruction successful, exit code 0 [2022-01-18 05:13:13,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226,115 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:13,210 INFO L402 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:13,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:13,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1129400010, now seen corresponding path program 9 times [2022-01-18 05:13:13,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:13,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302141177] [2022-01-18 05:13:13,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:13,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:13,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:13,244 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:13,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:13,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302141177] [2022-01-18 05:13:13,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302141177] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:13,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125089006] [2022-01-18 05:13:13,245 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:13:13,245 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:13,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:13,246 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) [2022-01-18 05:13:13,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2022-01-18 05:13:13,268 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 05:13:13,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:13,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:13,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:13,342 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:13,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:13,409 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:13,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125089006] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:13,409 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:13,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-01-18 05:13:13,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392536973] [2022-01-18 05:13:13,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:13,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 05:13:13,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:13,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 05:13:13,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:13,409 INFO L87 Difference]: Start difference. First operand 280 states and 859 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:13,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:13,521 INFO L93 Difference]: Finished difference Result 518 states and 1507 transitions. [2022-01-18 05:13:13,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:13,522 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:13,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:13,522 INFO L225 Difference]: With dead ends: 518 [2022-01-18 05:13:13,522 INFO L226 Difference]: Without dead ends: 509 [2022-01-18 05:13:13,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2022-01-18 05:13:13,523 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 93 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:13,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 102 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:13,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2022-01-18 05:13:13,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 280. [2022-01-18 05:13:13,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 279 states have (on average 3.064516129032258) internal successors, (855), 279 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:13,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 855 transitions. [2022-01-18 05:13:13,526 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 855 transitions. Word has length 19 [2022-01-18 05:13:13,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:13,527 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 855 transitions. [2022-01-18 05:13:13,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:13,527 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 855 transitions. [2022-01-18 05:13:13,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:13,527 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:13,527 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:13,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Forceful destruction successful, exit code 0 [2022-01-18 05:13:13,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable227 [2022-01-18 05:13:13,728 INFO L402 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:13,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:13,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1211399192, now seen corresponding path program 9 times [2022-01-18 05:13:13,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:13,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105468201] [2022-01-18 05:13:13,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:13,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:13,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:13,762 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:13,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:13,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105468201] [2022-01-18 05:13:13,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105468201] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:13,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877103883] [2022-01-18 05:13:13,762 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:13:13,762 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:13,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:13,763 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) [2022-01-18 05:13:13,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2022-01-18 05:13:13,786 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 05:13:13,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:13,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:13,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:13,843 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:13,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:13,894 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:13,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877103883] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:13,895 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:13,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-01-18 05:13:13,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838588838] [2022-01-18 05:13:13,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:13,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 05:13:13,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:13,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 05:13:13,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-01-18 05:13:13,895 INFO L87 Difference]: Start difference. First operand 280 states and 855 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:13,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:13,992 INFO L93 Difference]: Finished difference Result 572 states and 1674 transitions. [2022-01-18 05:13:13,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:13,992 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:13,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:13,993 INFO L225 Difference]: With dead ends: 572 [2022-01-18 05:13:13,993 INFO L226 Difference]: Without dead ends: 572 [2022-01-18 05:13:13,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2022-01-18 05:13:13,994 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 67 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:13,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 71 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:13,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2022-01-18 05:13:13,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 269. [2022-01-18 05:13:13,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 268 states have (on average 3.0671641791044775) internal successors, (822), 268 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:13,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 822 transitions. [2022-01-18 05:13:13,997 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 822 transitions. Word has length 19 [2022-01-18 05:13:13,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:13,997 INFO L470 AbstractCegarLoop]: Abstraction has 269 states and 822 transitions. [2022-01-18 05:13:13,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:13,998 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 822 transitions. [2022-01-18 05:13:13,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:13,998 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:13,998 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:14,014 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Ended with exit code 0 [2022-01-18 05:13:14,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228,117 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:14,198 INFO L402 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:14,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:14,199 INFO L85 PathProgramCache]: Analyzing trace with hash 776345336, now seen corresponding path program 10 times [2022-01-18 05:13:14,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:14,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715349531] [2022-01-18 05:13:14,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:14,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:14,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:14,225 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:14,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:14,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715349531] [2022-01-18 05:13:14,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715349531] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:13:14,225 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:13:14,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:13:14,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242359144] [2022-01-18 05:13:14,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:13:14,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:13:14,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:14,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:13:14,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:13:14,226 INFO L87 Difference]: Start difference. First operand 269 states and 822 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:14,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:14,321 INFO L93 Difference]: Finished difference Result 413 states and 1194 transitions. [2022-01-18 05:13:14,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:14,322 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:14,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:14,322 INFO L225 Difference]: With dead ends: 413 [2022-01-18 05:13:14,322 INFO L226 Difference]: Without dead ends: 389 [2022-01-18 05:13:14,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:14,323 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 72 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:14,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 51 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:14,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2022-01-18 05:13:14,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 273. [2022-01-18 05:13:14,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 272 states have (on average 3.0441176470588234) internal successors, (828), 272 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:14,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 828 transitions. [2022-01-18 05:13:14,326 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 828 transitions. Word has length 19 [2022-01-18 05:13:14,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:14,326 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 828 transitions. [2022-01-18 05:13:14,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:14,326 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 828 transitions. [2022-01-18 05:13:14,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:14,326 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:14,327 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:14,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2022-01-18 05:13:14,327 INFO L402 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:14,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:14,327 INFO L85 PathProgramCache]: Analyzing trace with hash -853608804, now seen corresponding path program 11 times [2022-01-18 05:13:14,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:14,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935851650] [2022-01-18 05:13:14,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:14,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:14,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:14,375 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:14,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:14,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935851650] [2022-01-18 05:13:14,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935851650] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:13:14,375 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:13:14,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:13:14,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84714782] [2022-01-18 05:13:14,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:13:14,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:13:14,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:14,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:13:14,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:13:14,376 INFO L87 Difference]: Start difference. First operand 273 states and 828 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:14,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:14,489 INFO L93 Difference]: Finished difference Result 397 states and 1148 transitions. [2022-01-18 05:13:14,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:14,489 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:14,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:14,490 INFO L225 Difference]: With dead ends: 397 [2022-01-18 05:13:14,490 INFO L226 Difference]: Without dead ends: 391 [2022-01-18 05:13:14,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:14,490 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 74 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:14,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 47 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:14,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2022-01-18 05:13:14,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 283. [2022-01-18 05:13:14,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 282 states have (on average 3.024822695035461) internal successors, (853), 282 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:14,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 853 transitions. [2022-01-18 05:13:14,494 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 853 transitions. Word has length 19 [2022-01-18 05:13:14,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:14,494 INFO L470 AbstractCegarLoop]: Abstraction has 283 states and 853 transitions. [2022-01-18 05:13:14,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:14,494 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 853 transitions. [2022-01-18 05:13:14,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:14,494 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:14,494 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:14,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2022-01-18 05:13:14,494 INFO L402 AbstractCegarLoop]: === Iteration 232 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:14,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:14,494 INFO L85 PathProgramCache]: Analyzing trace with hash 73236910, now seen corresponding path program 12 times [2022-01-18 05:13:14,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:14,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973462509] [2022-01-18 05:13:14,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:14,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:14,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:14,525 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:14,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:14,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973462509] [2022-01-18 05:13:14,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973462509] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:13:14,525 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:13:14,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:13:14,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974449025] [2022-01-18 05:13:14,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:13:14,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:13:14,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:14,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:13:14,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:13:14,526 INFO L87 Difference]: Start difference. First operand 283 states and 853 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:14,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:14,626 INFO L93 Difference]: Finished difference Result 361 states and 1065 transitions. [2022-01-18 05:13:14,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:14,626 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:14,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:14,626 INFO L225 Difference]: With dead ends: 361 [2022-01-18 05:13:14,626 INFO L226 Difference]: Without dead ends: 346 [2022-01-18 05:13:14,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:14,627 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 58 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:14,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 47 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:14,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2022-01-18 05:13:14,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 269. [2022-01-18 05:13:14,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 268 states have (on average 3.0597014925373136) internal successors, (820), 268 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:14,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 820 transitions. [2022-01-18 05:13:14,630 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 820 transitions. Word has length 19 [2022-01-18 05:13:14,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:14,630 INFO L470 AbstractCegarLoop]: Abstraction has 269 states and 820 transitions. [2022-01-18 05:13:14,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:14,630 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 820 transitions. [2022-01-18 05:13:14,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:14,630 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:14,630 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:14,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2022-01-18 05:13:14,631 INFO L402 AbstractCegarLoop]: === Iteration 233 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:14,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:14,631 INFO L85 PathProgramCache]: Analyzing trace with hash -793671404, now seen corresponding path program 10 times [2022-01-18 05:13:14,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:14,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146876542] [2022-01-18 05:13:14,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:14,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:14,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:14,663 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:14,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:14,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146876542] [2022-01-18 05:13:14,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146876542] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:14,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460720375] [2022-01-18 05:13:14,664 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 05:13:14,664 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:14,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:14,665 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) [2022-01-18 05:13:14,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2022-01-18 05:13:14,687 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 05:13:14,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:14,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:14,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:14,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:14,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:14,789 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:14,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460720375] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:14,790 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:14,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8 [2022-01-18 05:13:14,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378951394] [2022-01-18 05:13:14,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:14,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:13:14,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:14,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:13:14,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:13:14,790 INFO L87 Difference]: Start difference. First operand 269 states and 820 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:14,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:14,880 INFO L93 Difference]: Finished difference Result 531 states and 1547 transitions. [2022-01-18 05:13:14,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:14,881 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:14,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:14,881 INFO L225 Difference]: With dead ends: 531 [2022-01-18 05:13:14,881 INFO L226 Difference]: Without dead ends: 531 [2022-01-18 05:13:14,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:14,882 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 72 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:14,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 63 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:14,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2022-01-18 05:13:14,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 254. [2022-01-18 05:13:14,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 3.0118577075098814) internal successors, (762), 253 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:14,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 762 transitions. [2022-01-18 05:13:14,885 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 762 transitions. Word has length 19 [2022-01-18 05:13:14,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:14,885 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 762 transitions. [2022-01-18 05:13:14,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:14,885 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 762 transitions. [2022-01-18 05:13:14,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:14,885 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:14,886 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:14,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Forceful destruction successful, exit code 0 [2022-01-18 05:13:15,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232,118 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:15,086 INFO L402 AbstractCegarLoop]: === Iteration 234 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:15,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:15,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1425001406, now seen corresponding path program 11 times [2022-01-18 05:13:15,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:15,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75298038] [2022-01-18 05:13:15,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:15,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:15,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:15,114 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:15,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:15,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75298038] [2022-01-18 05:13:15,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75298038] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:15,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710511454] [2022-01-18 05:13:15,115 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 05:13:15,115 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:15,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:15,116 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) [2022-01-18 05:13:15,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Waiting until timeout for monitored process [2022-01-18 05:13:15,138 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:13:15,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:15,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:15,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:15,201 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:15,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:15,248 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:15,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710511454] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:15,248 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:15,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-01-18 05:13:15,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589296681] [2022-01-18 05:13:15,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:15,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 05:13:15,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:15,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 05:13:15,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-01-18 05:13:15,249 INFO L87 Difference]: Start difference. First operand 254 states and 762 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:15,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:15,345 INFO L93 Difference]: Finished difference Result 470 states and 1356 transitions. [2022-01-18 05:13:15,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:15,346 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:15,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:15,346 INFO L225 Difference]: With dead ends: 470 [2022-01-18 05:13:15,346 INFO L226 Difference]: Without dead ends: 464 [2022-01-18 05:13:15,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-01-18 05:13:15,346 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 86 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:15,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 77 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:15,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2022-01-18 05:13:15,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 266. [2022-01-18 05:13:15,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 265 states have (on average 3.0226415094339623) internal successors, (801), 265 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:15,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 801 transitions. [2022-01-18 05:13:15,350 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 801 transitions. Word has length 19 [2022-01-18 05:13:15,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:15,350 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 801 transitions. [2022-01-18 05:13:15,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:15,350 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 801 transitions. [2022-01-18 05:13:15,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:15,351 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:15,351 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:15,366 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Ended with exit code 0 [2022-01-18 05:13:15,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable233 [2022-01-18 05:13:15,551 INFO L402 AbstractCegarLoop]: === Iteration 235 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:15,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:15,552 INFO L85 PathProgramCache]: Analyzing trace with hash 832808322, now seen corresponding path program 12 times [2022-01-18 05:13:15,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:15,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268087792] [2022-01-18 05:13:15,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:15,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:15,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:15,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:15,585 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:15,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268087792] [2022-01-18 05:13:15,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268087792] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:15,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666176337] [2022-01-18 05:13:15,586 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 05:13:15,586 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:15,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:15,586 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) [2022-01-18 05:13:15,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process [2022-01-18 05:13:15,609 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 05:13:15,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:15,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:15,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:15,663 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:15,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:15,712 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:15,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666176337] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:15,712 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:15,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-01-18 05:13:15,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603314619] [2022-01-18 05:13:15,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:15,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 05:13:15,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:15,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 05:13:15,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-18 05:13:15,713 INFO L87 Difference]: Start difference. First operand 266 states and 801 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:15,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:15,827 INFO L93 Difference]: Finished difference Result 448 states and 1309 transitions. [2022-01-18 05:13:15,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:15,828 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:15,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:15,828 INFO L225 Difference]: With dead ends: 448 [2022-01-18 05:13:15,828 INFO L226 Difference]: Without dead ends: 448 [2022-01-18 05:13:15,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-01-18 05:13:15,829 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 56 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:15,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 95 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:15,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-01-18 05:13:15,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 251. [2022-01-18 05:13:15,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 250 states have (on average 3.024) internal successors, (756), 250 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:15,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 756 transitions. [2022-01-18 05:13:15,832 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 756 transitions. Word has length 19 [2022-01-18 05:13:15,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:15,832 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 756 transitions. [2022-01-18 05:13:15,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:15,832 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 756 transitions. [2022-01-18 05:13:15,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:15,833 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:15,833 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:15,848 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Ended with exit code 0 [2022-01-18 05:13:16,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable234 [2022-01-18 05:13:16,033 INFO L402 AbstractCegarLoop]: === Iteration 236 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:16,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:16,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1130757860, now seen corresponding path program 13 times [2022-01-18 05:13:16,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:16,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179132709] [2022-01-18 05:13:16,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:16,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:16,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:16,072 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:16,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:16,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179132709] [2022-01-18 05:13:16,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179132709] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:16,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924010967] [2022-01-18 05:13:16,072 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 05:13:16,072 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:16,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:16,073 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) [2022-01-18 05:13:16,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Waiting until timeout for monitored process [2022-01-18 05:13:16,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:16,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:16,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:16,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:16,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:16,265 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:16,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924010967] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:16,265 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:16,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-01-18 05:13:16,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648587849] [2022-01-18 05:13:16,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:16,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 05:13:16,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:16,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 05:13:16,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:16,266 INFO L87 Difference]: Start difference. First operand 251 states and 756 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:16,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:16,365 INFO L93 Difference]: Finished difference Result 475 states and 1387 transitions. [2022-01-18 05:13:16,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:16,365 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:16,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:16,366 INFO L225 Difference]: With dead ends: 475 [2022-01-18 05:13:16,366 INFO L226 Difference]: Without dead ends: 475 [2022-01-18 05:13:16,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-01-18 05:13:16,366 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 106 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:16,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 78 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:16,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2022-01-18 05:13:16,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 259. [2022-01-18 05:13:16,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 258 states have (on average 3.0775193798449614) internal successors, (794), 258 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:16,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 794 transitions. [2022-01-18 05:13:16,370 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 794 transitions. Word has length 19 [2022-01-18 05:13:16,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:16,370 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 794 transitions. [2022-01-18 05:13:16,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:16,370 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 794 transitions. [2022-01-18 05:13:16,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:16,370 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:16,370 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:16,386 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Ended with exit code 0 [2022-01-18 05:13:16,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 121 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable235 [2022-01-18 05:13:16,571 INFO L402 AbstractCegarLoop]: === Iteration 237 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:16,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:16,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1291977800, now seen corresponding path program 14 times [2022-01-18 05:13:16,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:16,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836391748] [2022-01-18 05:13:16,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:16,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:16,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:16,606 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:16,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:16,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836391748] [2022-01-18 05:13:16,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836391748] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:16,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470373751] [2022-01-18 05:13:16,606 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 05:13:16,607 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:16,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:16,607 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) [2022-01-18 05:13:16,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Waiting until timeout for monitored process [2022-01-18 05:13:16,630 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:13:16,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:16,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:16,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:16,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:16,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:16,771 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:16,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470373751] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:16,771 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:16,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-01-18 05:13:16,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176462614] [2022-01-18 05:13:16,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:16,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 05:13:16,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:16,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 05:13:16,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:16,772 INFO L87 Difference]: Start difference. First operand 259 states and 794 transitions. Second operand has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:16,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:16,883 INFO L93 Difference]: Finished difference Result 457 states and 1318 transitions. [2022-01-18 05:13:16,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:16,883 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:16,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:16,884 INFO L225 Difference]: With dead ends: 457 [2022-01-18 05:13:16,884 INFO L226 Difference]: Without dead ends: 451 [2022-01-18 05:13:16,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2022-01-18 05:13:16,884 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 77 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:16,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 93 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:16,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2022-01-18 05:13:16,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 263. [2022-01-18 05:13:16,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 262 states have (on average 3.0572519083969465) internal successors, (801), 262 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:16,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 801 transitions. [2022-01-18 05:13:16,888 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 801 transitions. Word has length 19 [2022-01-18 05:13:16,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:16,888 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 801 transitions. [2022-01-18 05:13:16,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:16,888 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 801 transitions. [2022-01-18 05:13:16,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:16,888 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:16,888 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:16,904 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Ended with exit code 0 [2022-01-18 05:13:17,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236,122 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:17,089 INFO L402 AbstractCegarLoop]: === Iteration 238 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:17,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:17,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1494100936, now seen corresponding path program 13 times [2022-01-18 05:13:17,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:17,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96494309] [2022-01-18 05:13:17,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:17,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:17,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:17,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:17,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:17,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96494309] [2022-01-18 05:13:17,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96494309] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:13:17,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:13:17,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:13:17,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632662468] [2022-01-18 05:13:17,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:13:17,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:13:17,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:17,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:13:17,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:13:17,124 INFO L87 Difference]: Start difference. First operand 263 states and 801 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:17,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:17,202 INFO L93 Difference]: Finished difference Result 479 states and 1377 transitions. [2022-01-18 05:13:17,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:17,203 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:17,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:17,203 INFO L225 Difference]: With dead ends: 479 [2022-01-18 05:13:17,203 INFO L226 Difference]: Without dead ends: 471 [2022-01-18 05:13:17,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:13:17,204 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 77 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:17,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 50 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:17,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2022-01-18 05:13:17,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 281. [2022-01-18 05:13:17,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 280 states have (on average 3.057142857142857) internal successors, (856), 280 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:17,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 856 transitions. [2022-01-18 05:13:17,207 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 856 transitions. Word has length 19 [2022-01-18 05:13:17,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:17,208 INFO L470 AbstractCegarLoop]: Abstraction has 281 states and 856 transitions. [2022-01-18 05:13:17,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:17,208 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 856 transitions. [2022-01-18 05:13:17,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:17,208 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:17,208 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:17,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2022-01-18 05:13:17,208 INFO L402 AbstractCegarLoop]: === Iteration 239 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:17,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:17,208 INFO L85 PathProgramCache]: Analyzing trace with hash -586439524, now seen corresponding path program 14 times [2022-01-18 05:13:17,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:17,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305308889] [2022-01-18 05:13:17,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:17,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:17,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:17,244 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:17,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:17,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305308889] [2022-01-18 05:13:17,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305308889] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:13:17,245 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:13:17,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:13:17,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844409342] [2022-01-18 05:13:17,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:13:17,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:13:17,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:17,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:13:17,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:13:17,245 INFO L87 Difference]: Start difference. First operand 281 states and 856 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:17,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:17,333 INFO L93 Difference]: Finished difference Result 485 states and 1392 transitions. [2022-01-18 05:13:17,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:17,333 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:17,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:17,334 INFO L225 Difference]: With dead ends: 485 [2022-01-18 05:13:17,334 INFO L226 Difference]: Without dead ends: 477 [2022-01-18 05:13:17,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:13:17,334 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 67 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:17,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 63 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:17,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2022-01-18 05:13:17,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 281. [2022-01-18 05:13:17,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 280 states have (on average 3.0607142857142855) internal successors, (857), 280 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:17,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 857 transitions. [2022-01-18 05:13:17,338 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 857 transitions. Word has length 19 [2022-01-18 05:13:17,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:17,338 INFO L470 AbstractCegarLoop]: Abstraction has 281 states and 857 transitions. [2022-01-18 05:13:17,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:17,338 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 857 transitions. [2022-01-18 05:13:17,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:17,338 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:17,338 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:17,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2022-01-18 05:13:17,339 INFO L402 AbstractCegarLoop]: === Iteration 240 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:17,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:17,339 INFO L85 PathProgramCache]: Analyzing trace with hash 509743022, now seen corresponding path program 15 times [2022-01-18 05:13:17,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:17,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834224993] [2022-01-18 05:13:17,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:17,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:17,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:17,377 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:17,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:17,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834224993] [2022-01-18 05:13:17,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834224993] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:17,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427457580] [2022-01-18 05:13:17,377 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:13:17,377 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:17,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:17,378 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) [2022-01-18 05:13:17,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Waiting until timeout for monitored process [2022-01-18 05:13:17,400 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 05:13:17,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:17,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:17,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:17,491 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:17,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:17,561 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:17,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427457580] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:17,561 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:17,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-01-18 05:13:17,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52882461] [2022-01-18 05:13:17,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:17,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 05:13:17,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:17,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 05:13:17,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:17,562 INFO L87 Difference]: Start difference. First operand 281 states and 857 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:17,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:17,662 INFO L93 Difference]: Finished difference Result 491 states and 1423 transitions. [2022-01-18 05:13:17,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:17,662 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:17,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:17,663 INFO L225 Difference]: With dead ends: 491 [2022-01-18 05:13:17,663 INFO L226 Difference]: Without dead ends: 491 [2022-01-18 05:13:17,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-01-18 05:13:17,663 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 95 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:17,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 86 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:17,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2022-01-18 05:13:17,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 279. [2022-01-18 05:13:17,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 278 states have (on average 3.053956834532374) internal successors, (849), 278 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:17,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 849 transitions. [2022-01-18 05:13:17,667 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 849 transitions. Word has length 19 [2022-01-18 05:13:17,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:17,667 INFO L470 AbstractCegarLoop]: Abstraction has 279 states and 849 transitions. [2022-01-18 05:13:17,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:17,667 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 849 transitions. [2022-01-18 05:13:17,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:17,668 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:17,668 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:17,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Forceful destruction successful, exit code 0 [2022-01-18 05:13:17,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239,123 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:17,868 INFO L402 AbstractCegarLoop]: === Iteration 241 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:17,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:17,868 INFO L85 PathProgramCache]: Analyzing trace with hash 207385588, now seen corresponding path program 15 times [2022-01-18 05:13:17,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:17,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529545268] [2022-01-18 05:13:17,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:17,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:17,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:17,899 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:17,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:17,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529545268] [2022-01-18 05:13:17,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529545268] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:17,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66696786] [2022-01-18 05:13:17,899 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:13:17,899 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:17,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:17,900 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) [2022-01-18 05:13:17,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Waiting until timeout for monitored process [2022-01-18 05:13:17,922 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 05:13:17,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:17,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:17,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:17,985 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:17,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:18,038 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:18,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66696786] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:18,038 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:18,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-01-18 05:13:18,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257424896] [2022-01-18 05:13:18,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:18,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 05:13:18,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:18,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 05:13:18,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:13:18,039 INFO L87 Difference]: Start difference. First operand 279 states and 849 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:18,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:18,134 INFO L93 Difference]: Finished difference Result 485 states and 1379 transitions. [2022-01-18 05:13:18,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:18,134 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:18,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:18,135 INFO L225 Difference]: With dead ends: 485 [2022-01-18 05:13:18,135 INFO L226 Difference]: Without dead ends: 477 [2022-01-18 05:13:18,135 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-01-18 05:13:18,135 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 90 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:18,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 82 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:18,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2022-01-18 05:13:18,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 272. [2022-01-18 05:13:18,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 271 states have (on average 3.062730627306273) internal successors, (830), 271 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:18,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 830 transitions. [2022-01-18 05:13:18,139 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 830 transitions. Word has length 19 [2022-01-18 05:13:18,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:18,139 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 830 transitions. [2022-01-18 05:13:18,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:18,139 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 830 transitions. [2022-01-18 05:13:18,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:18,139 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:18,139 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:18,155 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Ended with exit code 0 [2022-01-18 05:13:18,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240,124 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:18,340 INFO L402 AbstractCegarLoop]: === Iteration 242 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:18,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:18,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1574506322, now seen corresponding path program 16 times [2022-01-18 05:13:18,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:18,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968978474] [2022-01-18 05:13:18,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:18,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:18,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:18,374 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:18,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:18,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968978474] [2022-01-18 05:13:18,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968978474] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:18,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519432044] [2022-01-18 05:13:18,374 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 05:13:18,374 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:18,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:18,375 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) [2022-01-18 05:13:18,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Waiting until timeout for monitored process [2022-01-18 05:13:18,397 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 05:13:18,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:18,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:18,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:18,477 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:18,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:18,549 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:18,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519432044] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:18,549 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:18,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-01-18 05:13:18,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18988725] [2022-01-18 05:13:18,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:18,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 05:13:18,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:18,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 05:13:18,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:18,550 INFO L87 Difference]: Start difference. First operand 272 states and 830 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:18,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:18,647 INFO L93 Difference]: Finished difference Result 439 states and 1276 transitions. [2022-01-18 05:13:18,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:18,648 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:18,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:18,648 INFO L225 Difference]: With dead ends: 439 [2022-01-18 05:13:18,648 INFO L226 Difference]: Without dead ends: 430 [2022-01-18 05:13:18,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-01-18 05:13:18,649 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 94 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:18,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 84 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:18,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2022-01-18 05:13:18,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 272. [2022-01-18 05:13:18,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 271 states have (on average 3.047970479704797) internal successors, (826), 271 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:18,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 826 transitions. [2022-01-18 05:13:18,652 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 826 transitions. Word has length 19 [2022-01-18 05:13:18,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:18,652 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 826 transitions. [2022-01-18 05:13:18,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:18,652 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 826 transitions. [2022-01-18 05:13:18,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:18,652 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:18,653 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:18,667 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Ended with exit code 0 [2022-01-18 05:13:18,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241,125 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:18,853 INFO L402 AbstractCegarLoop]: === Iteration 243 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:18,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:18,853 INFO L85 PathProgramCache]: Analyzing trace with hash -379661772, now seen corresponding path program 16 times [2022-01-18 05:13:18,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:18,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751842628] [2022-01-18 05:13:18,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:18,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:18,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:18,889 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:18,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:18,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751842628] [2022-01-18 05:13:18,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751842628] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:18,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010075913] [2022-01-18 05:13:18,890 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 05:13:18,890 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:18,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:18,891 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) [2022-01-18 05:13:18,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Waiting until timeout for monitored process [2022-01-18 05:13:18,912 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 05:13:18,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:18,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:18,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:18,986 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:18,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:19,045 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:19,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010075913] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:19,045 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:19,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-01-18 05:13:19,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120351102] [2022-01-18 05:13:19,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:19,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 05:13:19,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:19,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 05:13:19,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:13:19,046 INFO L87 Difference]: Start difference. First operand 272 states and 826 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:19,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:19,145 INFO L93 Difference]: Finished difference Result 466 states and 1359 transitions. [2022-01-18 05:13:19,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:19,145 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:19,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:19,146 INFO L225 Difference]: With dead ends: 466 [2022-01-18 05:13:19,146 INFO L226 Difference]: Without dead ends: 466 [2022-01-18 05:13:19,146 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-01-18 05:13:19,146 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 78 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:19,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 86 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:19,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2022-01-18 05:13:19,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 268. [2022-01-18 05:13:19,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 267 states have (on average 3.048689138576779) internal successors, (814), 267 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:19,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 814 transitions. [2022-01-18 05:13:19,149 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 814 transitions. Word has length 19 [2022-01-18 05:13:19,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:19,149 INFO L470 AbstractCegarLoop]: Abstraction has 268 states and 814 transitions. [2022-01-18 05:13:19,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:19,149 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 814 transitions. [2022-01-18 05:13:19,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:19,150 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:19,150 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:19,165 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Forceful destruction successful, exit code 0 [2022-01-18 05:13:19,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable242 [2022-01-18 05:13:19,350 INFO L402 AbstractCegarLoop]: === Iteration 244 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:19,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:19,350 INFO L85 PathProgramCache]: Analyzing trace with hash -39034926, now seen corresponding path program 17 times [2022-01-18 05:13:19,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:19,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618102949] [2022-01-18 05:13:19,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:19,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:19,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:19,382 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:19,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:19,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618102949] [2022-01-18 05:13:19,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618102949] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:13:19,383 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:13:19,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:13:19,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720383980] [2022-01-18 05:13:19,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:13:19,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:13:19,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:19,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:13:19,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:13:19,383 INFO L87 Difference]: Start difference. First operand 268 states and 814 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:19,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:19,482 INFO L93 Difference]: Finished difference Result 410 states and 1187 transitions. [2022-01-18 05:13:19,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:19,482 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:19,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:19,483 INFO L225 Difference]: With dead ends: 410 [2022-01-18 05:13:19,483 INFO L226 Difference]: Without dead ends: 404 [2022-01-18 05:13:19,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:19,483 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 67 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:19,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 53 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:19,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2022-01-18 05:13:19,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 278. [2022-01-18 05:13:19,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 277 states have (on average 3.0288808664259927) internal successors, (839), 277 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:19,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 839 transitions. [2022-01-18 05:13:19,486 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 839 transitions. Word has length 19 [2022-01-18 05:13:19,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:19,486 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 839 transitions. [2022-01-18 05:13:19,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:19,487 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 839 transitions. [2022-01-18 05:13:19,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:19,487 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:19,487 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:19,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2022-01-18 05:13:19,487 INFO L402 AbstractCegarLoop]: === Iteration 245 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:19,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:19,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1371588864, now seen corresponding path program 18 times [2022-01-18 05:13:19,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:19,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383860618] [2022-01-18 05:13:19,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:19,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:19,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:19,519 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:19,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:19,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383860618] [2022-01-18 05:13:19,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383860618] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:13:19,520 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:13:19,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:13:19,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956957449] [2022-01-18 05:13:19,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:13:19,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:13:19,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:19,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:13:19,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:13:19,520 INFO L87 Difference]: Start difference. First operand 278 states and 839 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:19,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:19,616 INFO L93 Difference]: Finished difference Result 374 states and 1104 transitions. [2022-01-18 05:13:19,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:19,616 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:19,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:19,617 INFO L225 Difference]: With dead ends: 374 [2022-01-18 05:13:19,617 INFO L226 Difference]: Without dead ends: 363 [2022-01-18 05:13:19,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:19,617 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 50 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:19,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 52 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:19,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2022-01-18 05:13:19,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 268. [2022-01-18 05:13:19,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 267 states have (on average 3.044943820224719) internal successors, (813), 267 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:19,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 813 transitions. [2022-01-18 05:13:19,620 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 813 transitions. Word has length 19 [2022-01-18 05:13:19,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:19,620 INFO L470 AbstractCegarLoop]: Abstraction has 268 states and 813 transitions. [2022-01-18 05:13:19,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:19,620 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 813 transitions. [2022-01-18 05:13:19,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:19,621 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:19,621 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:19,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2022-01-18 05:13:19,621 INFO L402 AbstractCegarLoop]: === Iteration 246 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:19,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:19,621 INFO L85 PathProgramCache]: Analyzing trace with hash 42854168, now seen corresponding path program 17 times [2022-01-18 05:13:19,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:19,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862288394] [2022-01-18 05:13:19,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:19,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:19,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:19,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:19,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:19,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862288394] [2022-01-18 05:13:19,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862288394] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:13:19,652 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:13:19,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:13:19,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878642302] [2022-01-18 05:13:19,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:13:19,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:13:19,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:19,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:13:19,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:13:19,653 INFO L87 Difference]: Start difference. First operand 268 states and 813 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:19,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:19,759 INFO L93 Difference]: Finished difference Result 435 states and 1255 transitions. [2022-01-18 05:13:19,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:19,759 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:19,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:19,760 INFO L225 Difference]: With dead ends: 435 [2022-01-18 05:13:19,760 INFO L226 Difference]: Without dead ends: 429 [2022-01-18 05:13:19,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:13:19,760 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 63 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:19,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 62 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:19,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2022-01-18 05:13:19,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 274. [2022-01-18 05:13:19,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 273 states have (on average 3.029304029304029) internal successors, (827), 273 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:19,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 827 transitions. [2022-01-18 05:13:19,763 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 827 transitions. Word has length 19 [2022-01-18 05:13:19,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:19,763 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 827 transitions. [2022-01-18 05:13:19,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:19,764 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 827 transitions. [2022-01-18 05:13:19,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:19,764 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:19,764 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:19,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2022-01-18 05:13:19,764 INFO L402 AbstractCegarLoop]: === Iteration 247 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:19,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:19,764 INFO L85 PathProgramCache]: Analyzing trace with hash -2119016484, now seen corresponding path program 18 times [2022-01-18 05:13:19,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:19,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685285949] [2022-01-18 05:13:19,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:19,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:19,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:19,820 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:19,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:19,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685285949] [2022-01-18 05:13:19,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685285949] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:13:19,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:13:19,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:13:19,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534628734] [2022-01-18 05:13:19,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:13:19,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:13:19,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:19,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:13:19,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:13:19,821 INFO L87 Difference]: Start difference. First operand 274 states and 827 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:19,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:19,919 INFO L93 Difference]: Finished difference Result 413 states and 1218 transitions. [2022-01-18 05:13:19,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:19,919 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:19,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:19,919 INFO L225 Difference]: With dead ends: 413 [2022-01-18 05:13:19,920 INFO L226 Difference]: Without dead ends: 413 [2022-01-18 05:13:19,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:13:19,920 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 47 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:19,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 61 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:19,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2022-01-18 05:13:19,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 253. [2022-01-18 05:13:19,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 252 states have (on average 3.0277777777777777) internal successors, (763), 252 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:19,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 763 transitions. [2022-01-18 05:13:19,923 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 763 transitions. Word has length 19 [2022-01-18 05:13:19,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:19,923 INFO L470 AbstractCegarLoop]: Abstraction has 253 states and 763 transitions. [2022-01-18 05:13:19,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:19,923 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 763 transitions. [2022-01-18 05:13:19,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:19,923 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:19,923 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:19,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2022-01-18 05:13:19,924 INFO L402 AbstractCegarLoop]: === Iteration 248 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:19,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:19,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1924937480, now seen corresponding path program 19 times [2022-01-18 05:13:19,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:19,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484457170] [2022-01-18 05:13:19,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:19,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:19,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:19,955 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:19,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:19,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484457170] [2022-01-18 05:13:19,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484457170] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:19,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288583825] [2022-01-18 05:13:19,955 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 05:13:19,956 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:19,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:19,956 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) [2022-01-18 05:13:19,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Waiting until timeout for monitored process [2022-01-18 05:13:19,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:19,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:19,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:20,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:20,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:20,084 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:20,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288583825] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:20,085 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:20,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8 [2022-01-18 05:13:20,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687639100] [2022-01-18 05:13:20,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:20,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:13:20,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:20,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:13:20,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:13:20,085 INFO L87 Difference]: Start difference. First operand 253 states and 763 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:20,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:20,187 INFO L93 Difference]: Finished difference Result 531 states and 1560 transitions. [2022-01-18 05:13:20,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:20,188 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:20,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:20,188 INFO L225 Difference]: With dead ends: 531 [2022-01-18 05:13:20,189 INFO L226 Difference]: Without dead ends: 531 [2022-01-18 05:13:20,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:20,189 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 61 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:20,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 79 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:20,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2022-01-18 05:13:20,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 261. [2022-01-18 05:13:20,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 260 states have (on average 3.05) internal successors, (793), 260 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:20,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 793 transitions. [2022-01-18 05:13:20,192 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 793 transitions. Word has length 19 [2022-01-18 05:13:20,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:20,192 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 793 transitions. [2022-01-18 05:13:20,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:20,193 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 793 transitions. [2022-01-18 05:13:20,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:20,193 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:20,193 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:20,208 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Ended with exit code 0 [2022-01-18 05:13:20,393 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 [2022-01-18 05:13:20,393 INFO L402 AbstractCegarLoop]: === Iteration 249 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:20,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:20,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1553845540, now seen corresponding path program 20 times [2022-01-18 05:13:20,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:20,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193287578] [2022-01-18 05:13:20,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:20,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:20,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:20,427 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:20,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:20,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193287578] [2022-01-18 05:13:20,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193287578] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:20,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174736356] [2022-01-18 05:13:20,427 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 05:13:20,427 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:20,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:20,428 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) [2022-01-18 05:13:20,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Waiting until timeout for monitored process [2022-01-18 05:13:20,452 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:13:20,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:20,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:20,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:20,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:20,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:20,580 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:20,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174736356] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:20,580 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:20,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-01-18 05:13:20,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536086322] [2022-01-18 05:13:20,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:20,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 05:13:20,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:20,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 05:13:20,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-18 05:13:20,581 INFO L87 Difference]: Start difference. First operand 261 states and 793 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:20,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:20,672 INFO L93 Difference]: Finished difference Result 546 states and 1584 transitions. [2022-01-18 05:13:20,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:20,672 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:20,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:20,673 INFO L225 Difference]: With dead ends: 546 [2022-01-18 05:13:20,673 INFO L226 Difference]: Without dead ends: 546 [2022-01-18 05:13:20,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-01-18 05:13:20,673 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 101 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:20,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 63 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:20,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2022-01-18 05:13:20,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 267. [2022-01-18 05:13:20,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 266 states have (on average 3.082706766917293) internal successors, (820), 266 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:20,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 820 transitions. [2022-01-18 05:13:20,677 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 820 transitions. Word has length 19 [2022-01-18 05:13:20,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:20,677 INFO L470 AbstractCegarLoop]: Abstraction has 267 states and 820 transitions. [2022-01-18 05:13:20,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:20,677 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 820 transitions. [2022-01-18 05:13:20,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:20,677 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:20,677 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:20,692 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Ended with exit code 0 [2022-01-18 05:13:20,877 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 [2022-01-18 05:13:20,878 INFO L402 AbstractCegarLoop]: === Iteration 250 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:20,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:20,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1715065480, now seen corresponding path program 21 times [2022-01-18 05:13:20,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:20,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818066903] [2022-01-18 05:13:20,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:20,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:20,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:20,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:20,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:20,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818066903] [2022-01-18 05:13:20,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818066903] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:20,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230724938] [2022-01-18 05:13:20,906 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:13:20,907 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:20,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:20,908 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) [2022-01-18 05:13:20,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Waiting until timeout for monitored process [2022-01-18 05:13:20,931 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 05:13:20,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:20,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:20,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:20,984 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:20,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:21,040 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:21,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230724938] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:21,040 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:21,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-01-18 05:13:21,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377038438] [2022-01-18 05:13:21,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:21,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 05:13:21,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:21,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 05:13:21,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-01-18 05:13:21,040 INFO L87 Difference]: Start difference. First operand 267 states and 820 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:21,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:21,127 INFO L93 Difference]: Finished difference Result 492 states and 1431 transitions. [2022-01-18 05:13:21,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:21,128 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:21,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:21,128 INFO L225 Difference]: With dead ends: 492 [2022-01-18 05:13:21,128 INFO L226 Difference]: Without dead ends: 486 [2022-01-18 05:13:21,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-01-18 05:13:21,129 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 92 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:21,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 64 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:21,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2022-01-18 05:13:21,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 268. [2022-01-18 05:13:21,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 267 states have (on average 3.0636704119850187) internal successors, (818), 267 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:21,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 818 transitions. [2022-01-18 05:13:21,132 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 818 transitions. Word has length 19 [2022-01-18 05:13:21,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:21,132 INFO L470 AbstractCegarLoop]: Abstraction has 268 states and 818 transitions. [2022-01-18 05:13:21,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:21,133 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 818 transitions. [2022-01-18 05:13:21,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:21,133 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:21,133 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:21,148 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Ended with exit code 0 [2022-01-18 05:13:21,333 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 [2022-01-18 05:13:21,333 INFO L402 AbstractCegarLoop]: === Iteration 251 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:21,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:21,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1425376386, now seen corresponding path program 19 times [2022-01-18 05:13:21,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:21,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458176228] [2022-01-18 05:13:21,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:21,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:21,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:21,360 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:21,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:21,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458176228] [2022-01-18 05:13:21,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458176228] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:13:21,360 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:13:21,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:13:21,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554437378] [2022-01-18 05:13:21,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:13:21,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:13:21,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:21,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:13:21,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:13:21,361 INFO L87 Difference]: Start difference. First operand 268 states and 818 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:21,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:21,453 INFO L93 Difference]: Finished difference Result 411 states and 1193 transitions. [2022-01-18 05:13:21,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:21,453 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:21,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:21,454 INFO L225 Difference]: With dead ends: 411 [2022-01-18 05:13:21,454 INFO L226 Difference]: Without dead ends: 395 [2022-01-18 05:13:21,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:21,454 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 67 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:21,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 51 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:21,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2022-01-18 05:13:21,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 272. [2022-01-18 05:13:21,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 271 states have (on average 3.047970479704797) internal successors, (826), 271 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:21,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 826 transitions. [2022-01-18 05:13:21,457 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 826 transitions. Word has length 19 [2022-01-18 05:13:21,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:21,458 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 826 transitions. [2022-01-18 05:13:21,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:21,458 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 826 transitions. [2022-01-18 05:13:21,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:21,458 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:21,458 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:21,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2022-01-18 05:13:21,458 INFO L402 AbstractCegarLoop]: === Iteration 252 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:21,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:21,458 INFO L85 PathProgramCache]: Analyzing trace with hash 44324638, now seen corresponding path program 20 times [2022-01-18 05:13:21,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:21,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126683230] [2022-01-18 05:13:21,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:21,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:21,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:21,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:21,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:21,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126683230] [2022-01-18 05:13:21,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126683230] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:13:21,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:13:21,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:13:21,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136927116] [2022-01-18 05:13:21,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:13:21,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:13:21,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:21,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:13:21,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:13:21,489 INFO L87 Difference]: Start difference. First operand 272 states and 826 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:21,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:21,592 INFO L93 Difference]: Finished difference Result 440 states and 1247 transitions. [2022-01-18 05:13:21,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:21,592 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:21,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:21,593 INFO L225 Difference]: With dead ends: 440 [2022-01-18 05:13:21,593 INFO L226 Difference]: Without dead ends: 432 [2022-01-18 05:13:21,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:21,593 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 84 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:21,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 51 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:21,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2022-01-18 05:13:21,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 288. [2022-01-18 05:13:21,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 287 states have (on average 3.0313588850174216) internal successors, (870), 287 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:21,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 870 transitions. [2022-01-18 05:13:21,597 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 870 transitions. Word has length 19 [2022-01-18 05:13:21,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:21,597 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 870 transitions. [2022-01-18 05:13:21,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:21,597 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 870 transitions. [2022-01-18 05:13:21,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:21,597 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:21,597 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:21,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251 [2022-01-18 05:13:21,597 INFO L402 AbstractCegarLoop]: === Iteration 253 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:21,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:21,598 INFO L85 PathProgramCache]: Analyzing trace with hash 951986050, now seen corresponding path program 21 times [2022-01-18 05:13:21,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:21,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520751791] [2022-01-18 05:13:21,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:21,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:21,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:21,627 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:21,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:21,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520751791] [2022-01-18 05:13:21,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520751791] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:13:21,627 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:13:21,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:13:21,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67812748] [2022-01-18 05:13:21,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:13:21,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:13:21,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:21,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:13:21,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:13:21,627 INFO L87 Difference]: Start difference. First operand 288 states and 870 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:21,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:21,732 INFO L93 Difference]: Finished difference Result 403 states and 1161 transitions. [2022-01-18 05:13:21,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:21,733 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:21,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:21,733 INFO L225 Difference]: With dead ends: 403 [2022-01-18 05:13:21,733 INFO L226 Difference]: Without dead ends: 393 [2022-01-18 05:13:21,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:21,733 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 58 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:21,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 63 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:21,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2022-01-18 05:13:21,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 274. [2022-01-18 05:13:21,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 273 states have (on average 3.0549450549450547) internal successors, (834), 273 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:21,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 834 transitions. [2022-01-18 05:13:21,737 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 834 transitions. Word has length 19 [2022-01-18 05:13:21,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:21,737 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 834 transitions. [2022-01-18 05:13:21,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:21,737 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 834 transitions. [2022-01-18 05:13:21,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:21,737 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:21,738 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:21,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252 [2022-01-18 05:13:21,738 INFO L402 AbstractCegarLoop]: === Iteration 254 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:21,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:21,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1685949606, now seen corresponding path program 22 times [2022-01-18 05:13:21,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:21,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225522301] [2022-01-18 05:13:21,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:21,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:21,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:21,769 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:21,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:21,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225522301] [2022-01-18 05:13:21,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225522301] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:21,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555211576] [2022-01-18 05:13:21,769 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 05:13:21,769 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:21,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:21,770 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) [2022-01-18 05:13:21,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Waiting until timeout for monitored process [2022-01-18 05:13:21,793 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 05:13:21,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:21,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:21,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:21,845 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:21,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:21,894 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:21,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555211576] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:21,895 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:21,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8 [2022-01-18 05:13:21,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147859487] [2022-01-18 05:13:21,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:21,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:13:21,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:21,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:13:21,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:13:21,895 INFO L87 Difference]: Start difference. First operand 274 states and 834 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:22,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:22,002 INFO L93 Difference]: Finished difference Result 549 states and 1625 transitions. [2022-01-18 05:13:22,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:22,002 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:22,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:22,003 INFO L225 Difference]: With dead ends: 549 [2022-01-18 05:13:22,003 INFO L226 Difference]: Without dead ends: 549 [2022-01-18 05:13:22,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:22,003 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 64 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:22,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 86 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:22,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2022-01-18 05:13:22,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 269. [2022-01-18 05:13:22,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 268 states have (on average 3.0261194029850746) internal successors, (811), 268 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:22,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 811 transitions. [2022-01-18 05:13:22,007 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 811 transitions. Word has length 19 [2022-01-18 05:13:22,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:22,007 INFO L470 AbstractCegarLoop]: Abstraction has 269 states and 811 transitions. [2022-01-18 05:13:22,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:22,007 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 811 transitions. [2022-01-18 05:13:22,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:22,007 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:22,007 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:22,023 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Ended with exit code 0 [2022-01-18 05:13:22,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable253 [2022-01-18 05:13:22,208 INFO L402 AbstractCegarLoop]: === Iteration 255 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:22,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:22,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1663116218, now seen corresponding path program 22 times [2022-01-18 05:13:22,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:22,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257183723] [2022-01-18 05:13:22,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:22,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:22,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:22,237 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:22,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:22,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257183723] [2022-01-18 05:13:22,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257183723] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:22,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556041225] [2022-01-18 05:13:22,237 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 05:13:22,238 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:22,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:22,238 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) [2022-01-18 05:13:22,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Waiting until timeout for monitored process [2022-01-18 05:13:22,261 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 05:13:22,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:22,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:22,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:22,314 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:22,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:22,359 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:22,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556041225] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:22,359 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:22,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-01-18 05:13:22,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432601931] [2022-01-18 05:13:22,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:22,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 05:13:22,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:22,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 05:13:22,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:13:22,360 INFO L87 Difference]: Start difference. First operand 269 states and 811 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:22,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:22,465 INFO L93 Difference]: Finished difference Result 464 states and 1340 transitions. [2022-01-18 05:13:22,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:22,465 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:22,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:22,466 INFO L225 Difference]: With dead ends: 464 [2022-01-18 05:13:22,466 INFO L226 Difference]: Without dead ends: 448 [2022-01-18 05:13:22,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2022-01-18 05:13:22,466 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 83 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:22,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 93 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:22,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-01-18 05:13:22,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 259. [2022-01-18 05:13:22,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 258 states have (on average 3.0310077519379846) internal successors, (782), 258 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:22,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 782 transitions. [2022-01-18 05:13:22,469 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 782 transitions. Word has length 19 [2022-01-18 05:13:22,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:22,470 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 782 transitions. [2022-01-18 05:13:22,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:22,471 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 782 transitions. [2022-01-18 05:13:22,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:22,471 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:22,471 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:22,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Forceful destruction successful, exit code 0 [2022-01-18 05:13:22,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 131 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable254 [2022-01-18 05:13:22,687 INFO L402 AbstractCegarLoop]: === Iteration 256 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:22,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:22,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1793059386, now seen corresponding path program 23 times [2022-01-18 05:13:22,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:22,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009310658] [2022-01-18 05:13:22,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:22,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:22,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:22,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:22,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:22,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009310658] [2022-01-18 05:13:22,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009310658] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:22,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087499636] [2022-01-18 05:13:22,720 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 05:13:22,720 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:22,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:22,721 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) [2022-01-18 05:13:22,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Waiting until timeout for monitored process [2022-01-18 05:13:22,744 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:13:22,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:22,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:22,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:22,809 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:22,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:22,867 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:22,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087499636] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:22,867 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:22,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-01-18 05:13:22,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816622312] [2022-01-18 05:13:22,867 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:22,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 05:13:22,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:22,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 05:13:22,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-01-18 05:13:22,868 INFO L87 Difference]: Start difference. First operand 259 states and 782 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:22,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:22,984 INFO L93 Difference]: Finished difference Result 520 states and 1530 transitions. [2022-01-18 05:13:22,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:22,985 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:22,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:22,986 INFO L225 Difference]: With dead ends: 520 [2022-01-18 05:13:22,986 INFO L226 Difference]: Without dead ends: 520 [2022-01-18 05:13:22,986 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2022-01-18 05:13:22,986 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 62 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:22,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 95 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:22,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2022-01-18 05:13:22,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 263. [2022-01-18 05:13:22,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 262 states have (on average 3.0610687022900764) internal successors, (802), 262 states have internal predecessors, (802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:22,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 802 transitions. [2022-01-18 05:13:22,990 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 802 transitions. Word has length 19 [2022-01-18 05:13:22,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:22,990 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 802 transitions. [2022-01-18 05:13:22,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:22,990 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 802 transitions. [2022-01-18 05:13:22,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:22,991 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:22,991 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:23,006 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Ended with exit code 0 [2022-01-18 05:13:23,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 132 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable255 [2022-01-18 05:13:23,195 INFO L402 AbstractCegarLoop]: === Iteration 257 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:23,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:23,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1158710970, now seen corresponding path program 23 times [2022-01-18 05:13:23,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:23,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590214231] [2022-01-18 05:13:23,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:23,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:23,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:23,229 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:23,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:23,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590214231] [2022-01-18 05:13:23,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590214231] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:23,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866995604] [2022-01-18 05:13:23,229 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 05:13:23,230 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:23,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:23,230 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) [2022-01-18 05:13:23,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Waiting until timeout for monitored process [2022-01-18 05:13:23,253 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:13:23,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:23,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:23,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:23,328 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:23,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:23,391 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:23,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866995604] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:23,391 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:23,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-01-18 05:13:23,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567503413] [2022-01-18 05:13:23,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:23,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 05:13:23,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:23,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 05:13:23,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:23,392 INFO L87 Difference]: Start difference. First operand 263 states and 802 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:23,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:23,483 INFO L93 Difference]: Finished difference Result 482 states and 1413 transitions. [2022-01-18 05:13:23,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:23,483 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:23,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:23,484 INFO L225 Difference]: With dead ends: 482 [2022-01-18 05:13:23,484 INFO L226 Difference]: Without dead ends: 474 [2022-01-18 05:13:23,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2022-01-18 05:13:23,484 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 133 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:23,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 70 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:23,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2022-01-18 05:13:23,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 275. [2022-01-18 05:13:23,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 274 states have (on average 3.0583941605839415) internal successors, (838), 274 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:23,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 838 transitions. [2022-01-18 05:13:23,488 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 838 transitions. Word has length 19 [2022-01-18 05:13:23,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:23,488 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 838 transitions. [2022-01-18 05:13:23,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:23,488 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 838 transitions. [2022-01-18 05:13:23,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:23,488 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:23,488 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:23,503 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Ended with exit code 0 [2022-01-18 05:13:23,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable256 [2022-01-18 05:13:23,689 INFO L402 AbstractCegarLoop]: === Iteration 258 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:23,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:23,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1199008032, now seen corresponding path program 24 times [2022-01-18 05:13:23,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:23,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535620198] [2022-01-18 05:13:23,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:23,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:23,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:23,727 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:23,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:23,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535620198] [2022-01-18 05:13:23,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535620198] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:23,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070436293] [2022-01-18 05:13:23,727 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 05:13:23,727 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:23,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:23,728 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) [2022-01-18 05:13:23,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Waiting until timeout for monitored process [2022-01-18 05:13:23,751 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 05:13:23,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:23,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:23,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:23,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:23,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:23,856 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:23,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070436293] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:23,856 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:23,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-01-18 05:13:23,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502316797] [2022-01-18 05:13:23,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:23,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 05:13:23,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:23,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 05:13:23,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-01-18 05:13:23,856 INFO L87 Difference]: Start difference. First operand 275 states and 838 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:23,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:23,962 INFO L93 Difference]: Finished difference Result 478 states and 1416 transitions. [2022-01-18 05:13:23,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:23,963 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:23,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:23,963 INFO L225 Difference]: With dead ends: 478 [2022-01-18 05:13:23,963 INFO L226 Difference]: Without dead ends: 469 [2022-01-18 05:13:23,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2022-01-18 05:13:23,964 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 62 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:23,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 89 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:23,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2022-01-18 05:13:23,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 275. [2022-01-18 05:13:23,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 274 states have (on average 3.0437956204379564) internal successors, (834), 274 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:23,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 834 transitions. [2022-01-18 05:13:23,967 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 834 transitions. Word has length 19 [2022-01-18 05:13:23,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:23,967 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 834 transitions. [2022-01-18 05:13:23,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:23,967 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 834 transitions. [2022-01-18 05:13:23,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:23,968 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:23,968 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:23,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Forceful destruction successful, exit code 0 [2022-01-18 05:13:24,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 134 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable257 [2022-01-18 05:13:24,183 INFO L402 AbstractCegarLoop]: === Iteration 259 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:24,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:24,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1141791170, now seen corresponding path program 24 times [2022-01-18 05:13:24,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:24,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859373200] [2022-01-18 05:13:24,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:24,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:24,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:24,220 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:24,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:24,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859373200] [2022-01-18 05:13:24,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859373200] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:24,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272312706] [2022-01-18 05:13:24,221 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 05:13:24,221 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:24,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:24,222 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) [2022-01-18 05:13:24,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Waiting until timeout for monitored process [2022-01-18 05:13:24,249 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 05:13:24,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:24,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:24,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:24,323 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:24,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:24,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:24,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272312706] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:24,390 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:24,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-01-18 05:13:24,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708962104] [2022-01-18 05:13:24,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:24,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 05:13:24,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:24,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 05:13:24,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:24,390 INFO L87 Difference]: Start difference. First operand 275 states and 834 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:24,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:24,502 INFO L93 Difference]: Finished difference Result 445 states and 1322 transitions. [2022-01-18 05:13:24,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:24,502 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:24,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:24,503 INFO L225 Difference]: With dead ends: 445 [2022-01-18 05:13:24,503 INFO L226 Difference]: Without dead ends: 445 [2022-01-18 05:13:24,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2022-01-18 05:13:24,503 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 60 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:24,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 95 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:24,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2022-01-18 05:13:24,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 255. [2022-01-18 05:13:24,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 3.031496062992126) internal successors, (770), 254 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:24,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 770 transitions. [2022-01-18 05:13:24,506 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 770 transitions. Word has length 19 [2022-01-18 05:13:24,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:24,506 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 770 transitions. [2022-01-18 05:13:24,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:24,506 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 770 transitions. [2022-01-18 05:13:24,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:24,507 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:24,507 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:24,522 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Ended with exit code 0 [2022-01-18 05:13:24,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 135 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable258 [2022-01-18 05:13:24,707 INFO L402 AbstractCegarLoop]: === Iteration 260 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:24,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:24,707 INFO L85 PathProgramCache]: Analyzing trace with hash 344859718, now seen corresponding path program 25 times [2022-01-18 05:13:24,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:24,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527753788] [2022-01-18 05:13:24,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:24,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:24,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:24,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:24,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:24,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527753788] [2022-01-18 05:13:24,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527753788] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:24,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106905058] [2022-01-18 05:13:24,743 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 05:13:24,744 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:24,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:24,744 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) [2022-01-18 05:13:24,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Waiting until timeout for monitored process [2022-01-18 05:13:24,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:24,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:24,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:24,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:24,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:24,914 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:24,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106905058] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:24,915 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:24,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-01-18 05:13:24,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665251862] [2022-01-18 05:13:24,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:24,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 05:13:24,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:24,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 05:13:24,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:13:24,915 INFO L87 Difference]: Start difference. First operand 255 states and 770 transitions. Second operand has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:25,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:25,013 INFO L93 Difference]: Finished difference Result 497 states and 1455 transitions. [2022-01-18 05:13:25,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:25,013 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:25,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:25,014 INFO L225 Difference]: With dead ends: 497 [2022-01-18 05:13:25,014 INFO L226 Difference]: Without dead ends: 497 [2022-01-18 05:13:25,014 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2022-01-18 05:13:25,014 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 82 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:25,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 76 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:25,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2022-01-18 05:13:25,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 263. [2022-01-18 05:13:25,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 262 states have (on average 3.0839694656488548) internal successors, (808), 262 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:25,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 808 transitions. [2022-01-18 05:13:25,018 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 808 transitions. Word has length 19 [2022-01-18 05:13:25,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:25,018 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 808 transitions. [2022-01-18 05:13:25,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:25,018 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 808 transitions. [2022-01-18 05:13:25,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:25,019 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:25,019 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:25,034 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Forceful destruction successful, exit code 0 [2022-01-18 05:13:25,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable259,136 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:25,231 INFO L402 AbstractCegarLoop]: === Iteration 261 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:25,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:25,231 INFO L85 PathProgramCache]: Analyzing trace with hash 183639778, now seen corresponding path program 26 times [2022-01-18 05:13:25,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:25,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138567068] [2022-01-18 05:13:25,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:25,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:25,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:25,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:25,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:25,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138567068] [2022-01-18 05:13:25,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138567068] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:25,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177465613] [2022-01-18 05:13:25,263 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 05:13:25,263 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:25,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:25,264 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) [2022-01-18 05:13:25,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Waiting until timeout for monitored process [2022-01-18 05:13:25,287 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:13:25,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:25,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:25,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:25,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:25,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:25,409 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:25,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177465613] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:25,410 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:25,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-01-18 05:13:25,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476847282] [2022-01-18 05:13:25,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:25,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 05:13:25,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:25,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 05:13:25,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:13:25,410 INFO L87 Difference]: Start difference. First operand 263 states and 808 transitions. Second operand has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:25,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:25,510 INFO L93 Difference]: Finished difference Result 479 states and 1386 transitions. [2022-01-18 05:13:25,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:25,511 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:25,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:25,511 INFO L225 Difference]: With dead ends: 479 [2022-01-18 05:13:25,511 INFO L226 Difference]: Without dead ends: 473 [2022-01-18 05:13:25,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2022-01-18 05:13:25,512 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 83 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:25,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 89 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:25,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2022-01-18 05:13:25,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 266. [2022-01-18 05:13:25,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 265 states have (on average 3.060377358490566) internal successors, (811), 265 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:25,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 811 transitions. [2022-01-18 05:13:25,515 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 811 transitions. Word has length 19 [2022-01-18 05:13:25,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:25,515 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 811 transitions. [2022-01-18 05:13:25,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:25,515 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 811 transitions. [2022-01-18 05:13:25,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:25,516 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:25,516 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:25,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Forceful destruction successful, exit code 0 [2022-01-18 05:13:25,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260,137 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:25,717 INFO L402 AbstractCegarLoop]: === Iteration 262 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:25,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:25,717 INFO L85 PathProgramCache]: Analyzing trace with hash -18483358, now seen corresponding path program 25 times [2022-01-18 05:13:25,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:25,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802543980] [2022-01-18 05:13:25,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:25,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:25,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:25,749 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:25,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:25,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802543980] [2022-01-18 05:13:25,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802543980] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:13:25,749 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:13:25,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:13:25,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59992489] [2022-01-18 05:13:25,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:13:25,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:13:25,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:25,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:13:25,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:13:25,750 INFO L87 Difference]: Start difference. First operand 266 states and 811 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:25,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:25,849 INFO L93 Difference]: Finished difference Result 463 states and 1340 transitions. [2022-01-18 05:13:25,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:25,849 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:25,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:25,850 INFO L225 Difference]: With dead ends: 463 [2022-01-18 05:13:25,850 INFO L226 Difference]: Without dead ends: 455 [2022-01-18 05:13:25,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:25,850 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 79 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:25,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 54 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:25,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2022-01-18 05:13:25,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 284. [2022-01-18 05:13:25,853 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) [2022-01-18 05:13:25,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 866 transitions. [2022-01-18 05:13:25,854 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 866 transitions. Word has length 19 [2022-01-18 05:13:25,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:25,854 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 866 transitions. [2022-01-18 05:13:25,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:25,854 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 866 transitions. [2022-01-18 05:13:25,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:25,854 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:25,854 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:25,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261 [2022-01-18 05:13:25,854 INFO L402 AbstractCegarLoop]: === Iteration 263 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:25,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:25,854 INFO L85 PathProgramCache]: Analyzing trace with hash 889178054, now seen corresponding path program 26 times [2022-01-18 05:13:25,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:25,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866153914] [2022-01-18 05:13:25,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:25,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:25,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:25,886 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:25,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:25,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866153914] [2022-01-18 05:13:25,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866153914] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:13:25,886 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:13:25,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:13:25,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409222657] [2022-01-18 05:13:25,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:13:25,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:13:25,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:25,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:13:25,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:13:25,887 INFO L87 Difference]: Start difference. First operand 284 states and 866 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:25,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:25,991 INFO L93 Difference]: Finished difference Result 469 states and 1355 transitions. [2022-01-18 05:13:25,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:25,991 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:25,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:25,992 INFO L225 Difference]: With dead ends: 469 [2022-01-18 05:13:25,992 INFO L226 Difference]: Without dead ends: 461 [2022-01-18 05:13:25,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:25,992 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 78 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:25,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 56 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:25,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2022-01-18 05:13:25,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 284. [2022-01-18 05:13:25,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 283 states have (on average 3.0636042402826855) internal successors, (867), 283 states have internal predecessors, (867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:25,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 867 transitions. [2022-01-18 05:13:25,996 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 867 transitions. Word has length 19 [2022-01-18 05:13:25,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:25,996 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 867 transitions. [2022-01-18 05:13:25,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:25,996 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 867 transitions. [2022-01-18 05:13:25,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:25,996 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:25,996 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:25,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262 [2022-01-18 05:13:25,997 INFO L402 AbstractCegarLoop]: === Iteration 264 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:25,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:25,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1985360600, now seen corresponding path program 27 times [2022-01-18 05:13:25,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:25,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547004762] [2022-01-18 05:13:25,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:25,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:25,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:26,035 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:26,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:26,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547004762] [2022-01-18 05:13:26,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547004762] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:26,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046735122] [2022-01-18 05:13:26,036 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:13:26,036 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:26,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:26,037 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) [2022-01-18 05:13:26,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Waiting until timeout for monitored process [2022-01-18 05:13:26,065 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 05:13:26,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:26,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:26,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:26,157 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:26,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:26,224 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:26,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046735122] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:26,224 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:26,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-01-18 05:13:26,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854446573] [2022-01-18 05:13:26,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:26,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 05:13:26,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:26,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 05:13:26,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:13:26,225 INFO L87 Difference]: Start difference. First operand 284 states and 867 transitions. Second operand has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:26,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:26,312 INFO L93 Difference]: Finished difference Result 505 states and 1462 transitions. [2022-01-18 05:13:26,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:26,312 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:26,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:26,313 INFO L225 Difference]: With dead ends: 505 [2022-01-18 05:13:26,313 INFO L226 Difference]: Without dead ends: 505 [2022-01-18 05:13:26,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-01-18 05:13:26,313 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 97 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:26,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 66 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:26,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2022-01-18 05:13:26,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 282. [2022-01-18 05:13:26,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 281 states have (on average 3.0569395017793592) internal successors, (859), 281 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:26,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 859 transitions. [2022-01-18 05:13:26,317 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 859 transitions. Word has length 19 [2022-01-18 05:13:26,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:26,317 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 859 transitions. [2022-01-18 05:13:26,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:26,317 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 859 transitions. [2022-01-18 05:13:26,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:26,317 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:26,317 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:26,333 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Forceful destruction successful, exit code 0 [2022-01-18 05:13:26,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable263,138 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:26,518 INFO L402 AbstractCegarLoop]: === Iteration 265 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:26,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:26,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1683003166, now seen corresponding path program 27 times [2022-01-18 05:13:26,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:26,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569069908] [2022-01-18 05:13:26,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:26,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:26,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:26,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:26,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:26,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569069908] [2022-01-18 05:13:26,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569069908] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:26,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729026404] [2022-01-18 05:13:26,553 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:13:26,553 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:26,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:26,554 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) [2022-01-18 05:13:26,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Waiting until timeout for monitored process [2022-01-18 05:13:26,577 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 05:13:26,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:26,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:26,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:26,651 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:26,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:26,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:26,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729026404] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:26,706 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:26,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-01-18 05:13:26,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441096165] [2022-01-18 05:13:26,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:26,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 05:13:26,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:26,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 05:13:26,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:26,706 INFO L87 Difference]: Start difference. First operand 282 states and 859 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:26,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:26,815 INFO L93 Difference]: Finished difference Result 469 states and 1342 transitions. [2022-01-18 05:13:26,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:26,815 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:26,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:26,816 INFO L225 Difference]: With dead ends: 469 [2022-01-18 05:13:26,816 INFO L226 Difference]: Without dead ends: 461 [2022-01-18 05:13:26,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-01-18 05:13:26,816 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 97 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:26,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 106 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:26,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2022-01-18 05:13:26,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 275. [2022-01-18 05:13:26,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 274 states have (on average 3.065693430656934) internal successors, (840), 274 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:26,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 840 transitions. [2022-01-18 05:13:26,820 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 840 transitions. Word has length 19 [2022-01-18 05:13:26,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:26,820 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 840 transitions. [2022-01-18 05:13:26,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:26,820 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 840 transitions. [2022-01-18 05:13:26,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:26,821 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:26,821 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:26,836 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Ended with exit code 0 [2022-01-18 05:13:27,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264,139 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:27,021 INFO L402 AbstractCegarLoop]: === Iteration 266 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:27,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:27,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1244843396, now seen corresponding path program 28 times [2022-01-18 05:13:27,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:27,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503301601] [2022-01-18 05:13:27,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:27,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:27,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:27,054 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:27,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:27,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503301601] [2022-01-18 05:13:27,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503301601] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:27,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545720131] [2022-01-18 05:13:27,055 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 05:13:27,055 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:27,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:27,056 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) [2022-01-18 05:13:27,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Waiting until timeout for monitored process [2022-01-18 05:13:27,078 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 05:13:27,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:27,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:27,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:27,150 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:27,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:27,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:27,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545720131] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:27,210 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:27,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-01-18 05:13:27,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138655405] [2022-01-18 05:13:27,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:27,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 05:13:27,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:27,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 05:13:27,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:13:27,210 INFO L87 Difference]: Start difference. First operand 275 states and 840 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:27,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:27,316 INFO L93 Difference]: Finished difference Result 453 states and 1315 transitions. [2022-01-18 05:13:27,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:27,316 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:27,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:27,317 INFO L225 Difference]: With dead ends: 453 [2022-01-18 05:13:27,317 INFO L226 Difference]: Without dead ends: 444 [2022-01-18 05:13:27,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-01-18 05:13:27,317 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 59 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:27,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 100 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:27,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2022-01-18 05:13:27,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 275. [2022-01-18 05:13:27,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 274 states have (on average 3.051094890510949) internal successors, (836), 274 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:27,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 836 transitions. [2022-01-18 05:13:27,321 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 836 transitions. Word has length 19 [2022-01-18 05:13:27,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:27,321 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 836 transitions. [2022-01-18 05:13:27,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:27,321 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 836 transitions. [2022-01-18 05:13:27,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:27,321 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:27,321 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:27,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Forceful destruction successful, exit code 0 [2022-01-18 05:13:27,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 140 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable265 [2022-01-18 05:13:27,522 INFO L402 AbstractCegarLoop]: === Iteration 267 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:27,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:27,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1095955806, now seen corresponding path program 28 times [2022-01-18 05:13:27,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:27,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888894512] [2022-01-18 05:13:27,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:27,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:27,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:27,569 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:27,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:27,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888894512] [2022-01-18 05:13:27,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888894512] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:27,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91562049] [2022-01-18 05:13:27,569 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 05:13:27,569 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:27,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:27,570 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) [2022-01-18 05:13:27,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Waiting until timeout for monitored process [2022-01-18 05:13:27,592 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 05:13:27,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:27,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:27,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:27,675 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:27,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:27,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:27,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91562049] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:27,739 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:27,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-01-18 05:13:27,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138881415] [2022-01-18 05:13:27,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:27,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 05:13:27,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:27,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 05:13:27,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:27,740 INFO L87 Difference]: Start difference. First operand 275 states and 836 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:27,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:27,846 INFO L93 Difference]: Finished difference Result 450 states and 1322 transitions. [2022-01-18 05:13:27,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:27,846 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:27,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:27,847 INFO L225 Difference]: With dead ends: 450 [2022-01-18 05:13:27,847 INFO L226 Difference]: Without dead ends: 450 [2022-01-18 05:13:27,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-01-18 05:13:27,847 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 73 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:27,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 92 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:27,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-01-18 05:13:27,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 271. [2022-01-18 05:13:27,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 270 states have (on average 3.051851851851852) internal successors, (824), 270 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:27,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 824 transitions. [2022-01-18 05:13:27,855 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 824 transitions. Word has length 19 [2022-01-18 05:13:27,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:27,855 INFO L470 AbstractCegarLoop]: Abstraction has 271 states and 824 transitions. [2022-01-18 05:13:27,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:27,855 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 824 transitions. [2022-01-18 05:13:27,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:27,855 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:27,855 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:27,870 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Ended with exit code 0 [2022-01-18 05:13:28,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 141 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable266 [2022-01-18 05:13:28,056 INFO L402 AbstractCegarLoop]: === Iteration 268 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:28,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:28,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1436582652, now seen corresponding path program 29 times [2022-01-18 05:13:28,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:28,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638554537] [2022-01-18 05:13:28,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:28,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:28,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:28,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:28,085 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:28,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638554537] [2022-01-18 05:13:28,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638554537] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:13:28,085 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:13:28,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:13:28,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482090777] [2022-01-18 05:13:28,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:13:28,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:13:28,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:28,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:13:28,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:13:28,086 INFO L87 Difference]: Start difference. First operand 271 states and 824 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:28,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:28,175 INFO L93 Difference]: Finished difference Result 424 states and 1226 transitions. [2022-01-18 05:13:28,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:28,175 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:28,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:28,175 INFO L225 Difference]: With dead ends: 424 [2022-01-18 05:13:28,175 INFO L226 Difference]: Without dead ends: 418 [2022-01-18 05:13:28,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:13:28,176 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 60 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:28,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 60 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:28,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2022-01-18 05:13:28,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 281. [2022-01-18 05:13:28,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 280 states have (on average 3.032142857142857) internal successors, (849), 280 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:28,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 849 transitions. [2022-01-18 05:13:28,179 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 849 transitions. Word has length 19 [2022-01-18 05:13:28,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:28,179 INFO L470 AbstractCegarLoop]: Abstraction has 281 states and 849 transitions. [2022-01-18 05:13:28,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:28,179 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 849 transitions. [2022-01-18 05:13:28,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:28,180 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:28,180 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:28,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable267 [2022-01-18 05:13:28,180 INFO L402 AbstractCegarLoop]: === Iteration 269 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:28,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:28,180 INFO L85 PathProgramCache]: Analyzing trace with hash 104028714, now seen corresponding path program 30 times [2022-01-18 05:13:28,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:28,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745481239] [2022-01-18 05:13:28,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:28,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:28,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:28,211 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:28,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:28,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745481239] [2022-01-18 05:13:28,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745481239] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:13:28,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:13:28,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:13:28,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549045318] [2022-01-18 05:13:28,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:13:28,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:13:28,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:28,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:13:28,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:13:28,212 INFO L87 Difference]: Start difference. First operand 281 states and 849 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:28,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:28,288 INFO L93 Difference]: Finished difference Result 388 states and 1143 transitions. [2022-01-18 05:13:28,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:28,288 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:28,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:28,289 INFO L225 Difference]: With dead ends: 388 [2022-01-18 05:13:28,289 INFO L226 Difference]: Without dead ends: 377 [2022-01-18 05:13:28,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:13:28,289 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 49 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:28,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 46 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:28,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-01-18 05:13:28,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 271. [2022-01-18 05:13:28,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 270 states have (on average 3.0481481481481483) internal successors, (823), 270 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:28,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 823 transitions. [2022-01-18 05:13:28,292 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 823 transitions. Word has length 19 [2022-01-18 05:13:28,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:28,292 INFO L470 AbstractCegarLoop]: Abstraction has 271 states and 823 transitions. [2022-01-18 05:13:28,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:28,292 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 823 transitions. [2022-01-18 05:13:28,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:28,293 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:28,293 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:28,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable268 [2022-01-18 05:13:28,293 INFO L402 AbstractCegarLoop]: === Iteration 270 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:28,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:28,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1518471746, now seen corresponding path program 29 times [2022-01-18 05:13:28,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:28,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833190555] [2022-01-18 05:13:28,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:28,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:28,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:28,327 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:28,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:28,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833190555] [2022-01-18 05:13:28,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833190555] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:13:28,327 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:13:28,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:13:28,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633095933] [2022-01-18 05:13:28,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:13:28,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:13:28,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:28,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:13:28,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:13:28,328 INFO L87 Difference]: Start difference. First operand 271 states and 823 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:28,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:28,438 INFO L93 Difference]: Finished difference Result 401 states and 1166 transitions. [2022-01-18 05:13:28,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:28,438 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:28,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:28,439 INFO L225 Difference]: With dead ends: 401 [2022-01-18 05:13:28,439 INFO L226 Difference]: Without dead ends: 395 [2022-01-18 05:13:28,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:28,439 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 65 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:28,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 65 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:28,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2022-01-18 05:13:28,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 277. [2022-01-18 05:13:28,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 276 states have (on average 3.032608695652174) internal successors, (837), 276 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:28,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 837 transitions. [2022-01-18 05:13:28,443 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 837 transitions. Word has length 19 [2022-01-18 05:13:28,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:28,443 INFO L470 AbstractCegarLoop]: Abstraction has 277 states and 837 transitions. [2022-01-18 05:13:28,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:28,443 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 837 transitions. [2022-01-18 05:13:28,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:28,443 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:28,443 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:28,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable269 [2022-01-18 05:13:28,443 INFO L402 AbstractCegarLoop]: === Iteration 271 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:28,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:28,444 INFO L85 PathProgramCache]: Analyzing trace with hash -643398906, now seen corresponding path program 30 times [2022-01-18 05:13:28,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:28,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284038174] [2022-01-18 05:13:28,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:28,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:28,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:28,482 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:28,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:28,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284038174] [2022-01-18 05:13:28,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284038174] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:13:28,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:13:28,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:13:28,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414548188] [2022-01-18 05:13:28,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:13:28,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:13:28,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:28,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:13:28,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:13:28,483 INFO L87 Difference]: Start difference. First operand 277 states and 837 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:28,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:28,598 INFO L93 Difference]: Finished difference Result 379 states and 1129 transitions. [2022-01-18 05:13:28,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:28,598 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:28,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:28,598 INFO L225 Difference]: With dead ends: 379 [2022-01-18 05:13:28,599 INFO L226 Difference]: Without dead ends: 379 [2022-01-18 05:13:28,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:28,599 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 46 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:28,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 66 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:28,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2022-01-18 05:13:28,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 255. [2022-01-18 05:13:28,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 3.031496062992126) internal successors, (770), 254 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:28,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 770 transitions. [2022-01-18 05:13:28,602 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 770 transitions. Word has length 19 [2022-01-18 05:13:28,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:28,602 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 770 transitions. [2022-01-18 05:13:28,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:28,602 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 770 transitions. [2022-01-18 05:13:28,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:28,602 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:28,602 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:28,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable270 [2022-01-18 05:13:28,603 INFO L402 AbstractCegarLoop]: === Iteration 272 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:28,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:28,603 INFO L85 PathProgramCache]: Analyzing trace with hash -308718346, now seen corresponding path program 31 times [2022-01-18 05:13:28,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:28,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970764571] [2022-01-18 05:13:28,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:28,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:28,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:28,632 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:28,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:28,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970764571] [2022-01-18 05:13:28,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970764571] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:28,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450968294] [2022-01-18 05:13:28,633 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 05:13:28,633 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:28,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:28,634 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) [2022-01-18 05:13:28,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Waiting until timeout for monitored process [2022-01-18 05:13:28,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:28,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:28,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:28,716 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:28,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:28,774 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:28,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450968294] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:28,774 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:28,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-01-18 05:13:28,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635946723] [2022-01-18 05:13:28,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:28,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 05:13:28,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:28,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 05:13:28,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:13:28,775 INFO L87 Difference]: Start difference. First operand 255 states and 770 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:28,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:28,877 INFO L93 Difference]: Finished difference Result 485 states and 1377 transitions. [2022-01-18 05:13:28,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:28,877 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:28,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:28,878 INFO L225 Difference]: With dead ends: 485 [2022-01-18 05:13:28,878 INFO L226 Difference]: Without dead ends: 461 [2022-01-18 05:13:28,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-01-18 05:13:28,878 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 84 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:28,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 92 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:28,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2022-01-18 05:13:28,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 255. [2022-01-18 05:13:28,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 3.0039370078740157) internal successors, (763), 254 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:28,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 763 transitions. [2022-01-18 05:13:28,881 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 763 transitions. Word has length 19 [2022-01-18 05:13:28,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:28,882 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 763 transitions. [2022-01-18 05:13:28,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:28,882 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 763 transitions. [2022-01-18 05:13:28,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:28,882 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:28,882 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:28,897 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Ended with exit code 0 [2022-01-18 05:13:29,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable271,142 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:29,082 INFO L402 AbstractCegarLoop]: === Iteration 273 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:29,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:29,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1569689966, now seen corresponding path program 31 times [2022-01-18 05:13:29,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:29,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854234716] [2022-01-18 05:13:29,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:29,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:29,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:29,119 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:29,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:29,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854234716] [2022-01-18 05:13:29,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854234716] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:29,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858596826] [2022-01-18 05:13:29,119 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 05:13:29,119 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:29,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:29,120 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) [2022-01-18 05:13:29,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Waiting until timeout for monitored process [2022-01-18 05:13:29,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:29,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:29,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:29,194 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:29,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:29,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:29,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858596826] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:29,243 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:29,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8 [2022-01-18 05:13:29,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236745912] [2022-01-18 05:13:29,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:29,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:13:29,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:29,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:13:29,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:13:29,244 INFO L87 Difference]: Start difference. First operand 255 states and 763 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:29,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:29,343 INFO L93 Difference]: Finished difference Result 428 states and 1251 transitions. [2022-01-18 05:13:29,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:29,343 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:29,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:29,344 INFO L225 Difference]: With dead ends: 428 [2022-01-18 05:13:29,344 INFO L226 Difference]: Without dead ends: 428 [2022-01-18 05:13:29,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:29,344 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 59 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:29,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 81 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:29,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2022-01-18 05:13:29,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 255. [2022-01-18 05:13:29,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 3.0039370078740157) internal successors, (763), 254 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:29,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 763 transitions. [2022-01-18 05:13:29,347 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 763 transitions. Word has length 19 [2022-01-18 05:13:29,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:29,348 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 763 transitions. [2022-01-18 05:13:29,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:29,348 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 763 transitions. [2022-01-18 05:13:29,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:29,348 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:29,348 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:29,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Forceful destruction successful, exit code 0 [2022-01-18 05:13:29,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272,143 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:29,548 INFO L402 AbstractCegarLoop]: === Iteration 274 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:29,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:29,549 INFO L85 PathProgramCache]: Analyzing trace with hash 822526646, now seen corresponding path program 32 times [2022-01-18 05:13:29,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:29,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636944496] [2022-01-18 05:13:29,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:29,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:29,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:29,588 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:29,588 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:29,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636944496] [2022-01-18 05:13:29,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636944496] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:29,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024438551] [2022-01-18 05:13:29,588 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 05:13:29,588 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:29,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:29,589 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) [2022-01-18 05:13:29,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Waiting until timeout for monitored process [2022-01-18 05:13:29,611 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:13:29,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:29,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:29,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:29,697 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:29,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:29,773 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:29,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024438551] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:29,773 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:29,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-01-18 05:13:29,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765701944] [2022-01-18 05:13:29,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:29,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 05:13:29,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:29,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 05:13:29,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:29,773 INFO L87 Difference]: Start difference. First operand 255 states and 763 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:29,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:29,869 INFO L93 Difference]: Finished difference Result 485 states and 1396 transitions. [2022-01-18 05:13:29,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:29,869 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:29,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:29,870 INFO L225 Difference]: With dead ends: 485 [2022-01-18 05:13:29,870 INFO L226 Difference]: Without dead ends: 485 [2022-01-18 05:13:29,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-01-18 05:13:29,870 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 112 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:29,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 73 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:29,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2022-01-18 05:13:29,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 259. [2022-01-18 05:13:29,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 258 states have (on average 3.0348837209302326) internal successors, (783), 258 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:29,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 783 transitions. [2022-01-18 05:13:29,874 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 783 transitions. Word has length 19 [2022-01-18 05:13:29,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:29,874 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 783 transitions. [2022-01-18 05:13:29,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:29,874 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 783 transitions. [2022-01-18 05:13:29,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:29,874 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:29,874 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:29,890 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Ended with exit code 0 [2022-01-18 05:13:30,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable273,144 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:30,075 INFO L402 AbstractCegarLoop]: === Iteration 275 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:30,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:30,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1456875062, now seen corresponding path program 32 times [2022-01-18 05:13:30,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:30,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035677286] [2022-01-18 05:13:30,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:30,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:30,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:30,103 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:30,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:30,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035677286] [2022-01-18 05:13:30,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035677286] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:30,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509495182] [2022-01-18 05:13:30,104 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 05:13:30,104 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:30,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:30,104 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) [2022-01-18 05:13:30,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Waiting until timeout for monitored process [2022-01-18 05:13:30,127 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:13:30,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:30,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:30,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:30,183 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:30,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:30,231 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:30,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509495182] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:30,231 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:30,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-01-18 05:13:30,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662993307] [2022-01-18 05:13:30,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:30,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 05:13:30,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:30,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 05:13:30,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-01-18 05:13:30,232 INFO L87 Difference]: Start difference. First operand 259 states and 783 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:30,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:30,316 INFO L93 Difference]: Finished difference Result 429 states and 1254 transitions. [2022-01-18 05:13:30,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:30,316 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:30,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:30,317 INFO L225 Difference]: With dead ends: 429 [2022-01-18 05:13:30,317 INFO L226 Difference]: Without dead ends: 421 [2022-01-18 05:13:30,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-01-18 05:13:30,317 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 87 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:30,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 58 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:30,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2022-01-18 05:13:30,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 271. [2022-01-18 05:13:30,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 270 states have (on average 3.033333333333333) internal successors, (819), 270 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:30,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 819 transitions. [2022-01-18 05:13:30,320 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 819 transitions. Word has length 19 [2022-01-18 05:13:30,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:30,320 INFO L470 AbstractCegarLoop]: Abstraction has 271 states and 819 transitions. [2022-01-18 05:13:30,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:30,320 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 819 transitions. [2022-01-18 05:13:30,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:30,321 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:30,321 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:30,336 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Ended with exit code 0 [2022-01-18 05:13:30,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274,145 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:30,521 INFO L402 AbstractCegarLoop]: === Iteration 276 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:30,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:30,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1416578000, now seen corresponding path program 33 times [2022-01-18 05:13:30,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:30,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930593520] [2022-01-18 05:13:30,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:30,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:30,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:30,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:30,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:30,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930593520] [2022-01-18 05:13:30,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930593520] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:30,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538492257] [2022-01-18 05:13:30,556 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:13:30,557 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:30,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:30,557 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) [2022-01-18 05:13:30,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Waiting until timeout for monitored process [2022-01-18 05:13:30,580 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 05:13:30,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:30,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:30,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:30,654 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:30,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:30,723 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:30,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538492257] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:30,723 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:30,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-01-18 05:13:30,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886069691] [2022-01-18 05:13:30,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:30,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 05:13:30,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:30,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 05:13:30,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:30,723 INFO L87 Difference]: Start difference. First operand 271 states and 819 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:30,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:30,838 INFO L93 Difference]: Finished difference Result 498 states and 1425 transitions. [2022-01-18 05:13:30,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:30,838 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:30,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:30,839 INFO L225 Difference]: With dead ends: 498 [2022-01-18 05:13:30,839 INFO L226 Difference]: Without dead ends: 489 [2022-01-18 05:13:30,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-01-18 05:13:30,839 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 66 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:30,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 108 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:30,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2022-01-18 05:13:30,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 271. [2022-01-18 05:13:30,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 270 states have (on average 3.0185185185185186) internal successors, (815), 270 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:30,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 815 transitions. [2022-01-18 05:13:30,843 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 815 transitions. Word has length 19 [2022-01-18 05:13:30,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:30,843 INFO L470 AbstractCegarLoop]: Abstraction has 271 states and 815 transitions. [2022-01-18 05:13:30,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:30,843 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 815 transitions. [2022-01-18 05:13:30,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:30,843 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:30,843 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:30,859 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Ended with exit code 0 [2022-01-18 05:13:31,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable275,146 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:31,059 INFO L402 AbstractCegarLoop]: === Iteration 277 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:31,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:31,059 INFO L85 PathProgramCache]: Analyzing trace with hash -537590094, now seen corresponding path program 33 times [2022-01-18 05:13:31,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:31,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392900394] [2022-01-18 05:13:31,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:31,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:31,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:31,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:31,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:31,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392900394] [2022-01-18 05:13:31,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392900394] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:31,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959729439] [2022-01-18 05:13:31,094 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:13:31,094 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:31,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:31,095 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) [2022-01-18 05:13:31,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Waiting until timeout for monitored process [2022-01-18 05:13:31,117 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 05:13:31,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:31,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:31,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:31,173 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:31,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:31,223 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:31,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959729439] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:31,223 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:31,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-01-18 05:13:31,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627051086] [2022-01-18 05:13:31,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:31,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 05:13:31,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:31,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 05:13:31,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-18 05:13:31,224 INFO L87 Difference]: Start difference. First operand 271 states and 815 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:31,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:31,327 INFO L93 Difference]: Finished difference Result 447 states and 1310 transitions. [2022-01-18 05:13:31,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:31,327 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:31,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:31,328 INFO L225 Difference]: With dead ends: 447 [2022-01-18 05:13:31,328 INFO L226 Difference]: Without dead ends: 447 [2022-01-18 05:13:31,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-01-18 05:13:31,328 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 64 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:31,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 78 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:31,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2022-01-18 05:13:31,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 260. [2022-01-18 05:13:31,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 259 states have (on average 3.0193050193050195) internal successors, (782), 259 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:31,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 782 transitions. [2022-01-18 05:13:31,331 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 782 transitions. Word has length 19 [2022-01-18 05:13:31,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:31,331 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 782 transitions. [2022-01-18 05:13:31,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:31,332 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 782 transitions. [2022-01-18 05:13:31,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:31,332 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:31,332 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:31,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Forceful destruction successful, exit code 0 [2022-01-18 05:13:31,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 147 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable276 [2022-01-18 05:13:31,532 INFO L402 AbstractCegarLoop]: === Iteration 278 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:31,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:31,533 INFO L85 PathProgramCache]: Analyzing trace with hash -972643950, now seen corresponding path program 34 times [2022-01-18 05:13:31,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:31,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434162714] [2022-01-18 05:13:31,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:31,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:31,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:31,559 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:31,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:31,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434162714] [2022-01-18 05:13:31,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434162714] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:13:31,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:13:31,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:13:31,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120093919] [2022-01-18 05:13:31,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:13:31,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:13:31,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:31,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:13:31,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:13:31,560 INFO L87 Difference]: Start difference. First operand 260 states and 782 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:31,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:31,648 INFO L93 Difference]: Finished difference Result 556 states and 1559 transitions. [2022-01-18 05:13:31,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:31,648 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:31,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:31,649 INFO L225 Difference]: With dead ends: 556 [2022-01-18 05:13:31,649 INFO L226 Difference]: Without dead ends: 532 [2022-01-18 05:13:31,649 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:13:31,649 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 79 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:31,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 66 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:31,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2022-01-18 05:13:31,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 264. [2022-01-18 05:13:31,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 263 states have (on average 2.9961977186311786) internal successors, (788), 263 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:31,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 788 transitions. [2022-01-18 05:13:31,652 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 788 transitions. Word has length 19 [2022-01-18 05:13:31,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:31,653 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 788 transitions. [2022-01-18 05:13:31,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:31,653 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 788 transitions. [2022-01-18 05:13:31,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:31,653 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:31,653 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:31,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable277 [2022-01-18 05:13:31,653 INFO L402 AbstractCegarLoop]: === Iteration 279 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:31,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:31,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1692369206, now seen corresponding path program 35 times [2022-01-18 05:13:31,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:31,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288436882] [2022-01-18 05:13:31,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:31,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:31,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:31,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:31,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:31,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288436882] [2022-01-18 05:13:31,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288436882] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:13:31,684 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:13:31,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:13:31,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127767397] [2022-01-18 05:13:31,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:13:31,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:13:31,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:31,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:13:31,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:13:31,684 INFO L87 Difference]: Start difference. First operand 264 states and 788 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:31,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:31,763 INFO L93 Difference]: Finished difference Result 540 states and 1513 transitions. [2022-01-18 05:13:31,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:31,763 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:31,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:31,764 INFO L225 Difference]: With dead ends: 540 [2022-01-18 05:13:31,764 INFO L226 Difference]: Without dead ends: 534 [2022-01-18 05:13:31,764 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:13:31,764 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 86 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:31,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 53 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:31,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2022-01-18 05:13:31,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 274. [2022-01-18 05:13:31,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 273 states have (on average 2.978021978021978) internal successors, (813), 273 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:31,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 813 transitions. [2022-01-18 05:13:31,768 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 813 transitions. Word has length 19 [2022-01-18 05:13:31,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:31,768 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 813 transitions. [2022-01-18 05:13:31,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:31,768 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 813 transitions. [2022-01-18 05:13:31,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:31,768 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:31,768 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:31,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable278 [2022-01-18 05:13:31,768 INFO L402 AbstractCegarLoop]: === Iteration 280 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:31,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:31,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1675752376, now seen corresponding path program 36 times [2022-01-18 05:13:31,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:31,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934739472] [2022-01-18 05:13:31,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:31,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:31,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:31,800 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:31,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:31,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934739472] [2022-01-18 05:13:31,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934739472] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:13:31,800 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:13:31,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:13:31,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523369118] [2022-01-18 05:13:31,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:13:31,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:13:31,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:31,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:13:31,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:13:31,801 INFO L87 Difference]: Start difference. First operand 274 states and 813 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:31,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:31,879 INFO L93 Difference]: Finished difference Result 504 states and 1430 transitions. [2022-01-18 05:13:31,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:31,879 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:31,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:31,880 INFO L225 Difference]: With dead ends: 504 [2022-01-18 05:13:31,880 INFO L226 Difference]: Without dead ends: 489 [2022-01-18 05:13:31,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:13:31,880 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 67 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:31,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 53 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:31,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2022-01-18 05:13:31,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 260. [2022-01-18 05:13:31,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 259 states have (on average 3.011583011583012) internal successors, (780), 259 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:31,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 780 transitions. [2022-01-18 05:13:31,884 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 780 transitions. Word has length 19 [2022-01-18 05:13:31,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:31,884 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 780 transitions. [2022-01-18 05:13:31,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:31,884 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 780 transitions. [2022-01-18 05:13:31,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:31,884 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:31,884 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:31,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable279 [2022-01-18 05:13:31,884 INFO L402 AbstractCegarLoop]: === Iteration 281 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:31,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:31,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1752306606, now seen corresponding path program 34 times [2022-01-18 05:13:31,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:31,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891236322] [2022-01-18 05:13:31,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:31,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:31,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:31,916 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:31,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:31,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891236322] [2022-01-18 05:13:31,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891236322] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:31,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761481618] [2022-01-18 05:13:31,916 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 05:13:31,916 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:31,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:31,917 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) [2022-01-18 05:13:31,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Waiting until timeout for monitored process [2022-01-18 05:13:31,939 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 05:13:31,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:31,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:31,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:31,992 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:31,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:32,042 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:32,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761481618] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:32,042 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:32,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8 [2022-01-18 05:13:32,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360832649] [2022-01-18 05:13:32,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:32,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:13:32,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:32,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:13:32,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:13:32,043 INFO L87 Difference]: Start difference. First operand 260 states and 780 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:32,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:32,151 INFO L93 Difference]: Finished difference Result 588 states and 1723 transitions. [2022-01-18 05:13:32,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:32,151 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:32,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:32,152 INFO L225 Difference]: With dead ends: 588 [2022-01-18 05:13:32,152 INFO L226 Difference]: Without dead ends: 588 [2022-01-18 05:13:32,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:32,152 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 65 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:32,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 84 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:32,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2022-01-18 05:13:32,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 266. [2022-01-18 05:13:32,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 265 states have (on average 3.0113207547169814) internal successors, (798), 265 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:32,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 798 transitions. [2022-01-18 05:13:32,156 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 798 transitions. Word has length 19 [2022-01-18 05:13:32,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:32,156 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 798 transitions. [2022-01-18 05:13:32,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:32,156 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 798 transitions. [2022-01-18 05:13:32,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:32,156 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:32,156 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:32,172 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Ended with exit code 0 [2022-01-18 05:13:32,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable280,148 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:32,357 INFO L402 AbstractCegarLoop]: === Iteration 282 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:32,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:32,357 INFO L85 PathProgramCache]: Analyzing trace with hash -323987880, now seen corresponding path program 35 times [2022-01-18 05:13:32,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:32,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66453838] [2022-01-18 05:13:32,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:32,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:32,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:32,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:32,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:32,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66453838] [2022-01-18 05:13:32,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66453838] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:32,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799915746] [2022-01-18 05:13:32,388 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 05:13:32,388 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:32,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:32,389 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) [2022-01-18 05:13:32,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Waiting until timeout for monitored process [2022-01-18 05:13:32,411 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:13:32,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:32,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:32,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:32,480 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:32,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:32,527 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:32,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799915746] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:32,527 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:32,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-01-18 05:13:32,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029537520] [2022-01-18 05:13:32,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:32,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 05:13:32,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:32,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 05:13:32,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-01-18 05:13:32,528 INFO L87 Difference]: Start difference. First operand 266 states and 798 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:32,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:32,619 INFO L93 Difference]: Finished difference Result 527 states and 1532 transitions. [2022-01-18 05:13:32,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:32,619 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:32,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:32,620 INFO L225 Difference]: With dead ends: 527 [2022-01-18 05:13:32,620 INFO L226 Difference]: Without dead ends: 521 [2022-01-18 05:13:32,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2022-01-18 05:13:32,620 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 91 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:32,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 68 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:32,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2022-01-18 05:13:32,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 278. [2022-01-18 05:13:32,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 277 states have (on average 3.0216606498194944) internal successors, (837), 277 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:32,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 837 transitions. [2022-01-18 05:13:32,624 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 837 transitions. Word has length 19 [2022-01-18 05:13:32,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:32,624 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 837 transitions. [2022-01-18 05:13:32,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:32,624 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 837 transitions. [2022-01-18 05:13:32,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:32,624 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:32,624 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:32,639 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Ended with exit code 0 [2022-01-18 05:13:32,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable281,149 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:32,825 INFO L402 AbstractCegarLoop]: === Iteration 283 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:32,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:32,825 INFO L85 PathProgramCache]: Analyzing trace with hash -916180964, now seen corresponding path program 36 times [2022-01-18 05:13:32,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:32,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040320222] [2022-01-18 05:13:32,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:32,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:32,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:32,858 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:32,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:32,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040320222] [2022-01-18 05:13:32,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040320222] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:32,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124743219] [2022-01-18 05:13:32,858 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 05:13:32,859 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:32,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:32,859 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) [2022-01-18 05:13:32,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (150)] Waiting until timeout for monitored process [2022-01-18 05:13:32,882 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 05:13:32,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:32,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:32,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:32,935 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:32,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:32,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:32,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124743219] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:32,983 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:32,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-01-18 05:13:32,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093813102] [2022-01-18 05:13:32,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:32,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 05:13:32,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:32,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 05:13:32,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-01-18 05:13:32,983 INFO L87 Difference]: Start difference. First operand 278 states and 837 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:33,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:33,090 INFO L93 Difference]: Finished difference Result 505 states and 1485 transitions. [2022-01-18 05:13:33,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:33,090 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:33,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:33,091 INFO L225 Difference]: With dead ends: 505 [2022-01-18 05:13:33,091 INFO L226 Difference]: Without dead ends: 505 [2022-01-18 05:13:33,091 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2022-01-18 05:13:33,091 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 59 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:33,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 90 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:33,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2022-01-18 05:13:33,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 260. [2022-01-18 05:13:33,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 259 states have (on average 3.011583011583012) internal successors, (780), 259 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:33,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 780 transitions. [2022-01-18 05:13:33,094 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 780 transitions. Word has length 19 [2022-01-18 05:13:33,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:33,095 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 780 transitions. [2022-01-18 05:13:33,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:33,095 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 780 transitions. [2022-01-18 05:13:33,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:33,095 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:33,095 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:33,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (150)] Forceful destruction successful, exit code 0 [2022-01-18 05:13:33,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 150 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable282 [2022-01-18 05:13:33,299 INFO L402 AbstractCegarLoop]: === Iteration 284 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:33,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:33,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1415220150, now seen corresponding path program 37 times [2022-01-18 05:13:33,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:33,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36121954] [2022-01-18 05:13:33,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:33,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:33,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:33,339 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:33,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:33,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36121954] [2022-01-18 05:13:33,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36121954] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:33,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065659770] [2022-01-18 05:13:33,339 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 05:13:33,339 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:33,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:33,340 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) [2022-01-18 05:13:33,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Waiting until timeout for monitored process [2022-01-18 05:13:33,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:33,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:33,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:33,454 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:33,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:33,530 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:33,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065659770] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:33,530 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:33,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-01-18 05:13:33,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251725920] [2022-01-18 05:13:33,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:33,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 05:13:33,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:33,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 05:13:33,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:33,531 INFO L87 Difference]: Start difference. First operand 260 states and 780 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:33,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:33,628 INFO L93 Difference]: Finished difference Result 581 states and 1677 transitions. [2022-01-18 05:13:33,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:33,628 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:33,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:33,629 INFO L225 Difference]: With dead ends: 581 [2022-01-18 05:13:33,629 INFO L226 Difference]: Without dead ends: 581 [2022-01-18 05:13:33,629 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-01-18 05:13:33,629 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 130 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:33,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 75 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:33,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2022-01-18 05:13:33,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 268. [2022-01-18 05:13:33,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 267 states have (on average 3.0636704119850187) internal successors, (818), 267 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:33,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 818 transitions. [2022-01-18 05:13:33,633 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 818 transitions. Word has length 19 [2022-01-18 05:13:33,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:33,633 INFO L470 AbstractCegarLoop]: Abstraction has 268 states and 818 transitions. [2022-01-18 05:13:33,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:33,634 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 818 transitions. [2022-01-18 05:13:33,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:33,634 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:33,634 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:33,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Forceful destruction successful, exit code 0 [2022-01-18 05:13:33,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable283,151 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:33,834 INFO L402 AbstractCegarLoop]: === Iteration 285 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:33,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:33,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1254000210, now seen corresponding path program 38 times [2022-01-18 05:13:33,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:33,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593322211] [2022-01-18 05:13:33,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:33,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:33,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:33,871 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:33,871 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:33,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593322211] [2022-01-18 05:13:33,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593322211] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:33,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149378806] [2022-01-18 05:13:33,871 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 05:13:33,871 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:33,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:33,872 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) [2022-01-18 05:13:33,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (152)] Waiting until timeout for monitored process [2022-01-18 05:13:33,895 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:13:33,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:33,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:33,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:33,972 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:33,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:34,038 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:34,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149378806] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:34,038 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:34,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-01-18 05:13:34,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645723460] [2022-01-18 05:13:34,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:34,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 05:13:34,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:34,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 05:13:34,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:34,039 INFO L87 Difference]: Start difference. First operand 268 states and 818 transitions. Second operand has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:34,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:34,133 INFO L93 Difference]: Finished difference Result 563 states and 1608 transitions. [2022-01-18 05:13:34,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:34,133 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:34,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:34,134 INFO L225 Difference]: With dead ends: 563 [2022-01-18 05:13:34,134 INFO L226 Difference]: Without dead ends: 557 [2022-01-18 05:13:34,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2022-01-18 05:13:34,134 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 119 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:34,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 82 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:34,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2022-01-18 05:13:34,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 271. [2022-01-18 05:13:34,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 270 states have (on average 3.0407407407407407) internal successors, (821), 270 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:34,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 821 transitions. [2022-01-18 05:13:34,138 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 821 transitions. Word has length 19 [2022-01-18 05:13:34,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:34,138 INFO L470 AbstractCegarLoop]: Abstraction has 271 states and 821 transitions. [2022-01-18 05:13:34,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:34,138 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 821 transitions. [2022-01-18 05:13:34,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:34,139 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:34,139 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:34,154 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (152)] Ended with exit code 0 [2022-01-18 05:13:34,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable284,152 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:34,339 INFO L402 AbstractCegarLoop]: === Iteration 286 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:34,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:34,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1051877074, now seen corresponding path program 37 times [2022-01-18 05:13:34,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:34,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080688274] [2022-01-18 05:13:34,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:34,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:34,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:34,369 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:34,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:34,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080688274] [2022-01-18 05:13:34,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080688274] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:13:34,369 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:13:34,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:13:34,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313273508] [2022-01-18 05:13:34,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:13:34,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:13:34,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:34,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:13:34,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:13:34,370 INFO L87 Difference]: Start difference. First operand 271 states and 821 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:34,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:34,451 INFO L93 Difference]: Finished difference Result 517 states and 1498 transitions. [2022-01-18 05:13:34,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:34,451 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:34,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:34,452 INFO L225 Difference]: With dead ends: 517 [2022-01-18 05:13:34,452 INFO L226 Difference]: Without dead ends: 509 [2022-01-18 05:13:34,452 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:13:34,452 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 72 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:34,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 52 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:34,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2022-01-18 05:13:34,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 281. [2022-01-18 05:13:34,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 280 states have (on average 3.057142857142857) internal successors, (856), 280 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:34,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 856 transitions. [2022-01-18 05:13:34,456 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 856 transitions. Word has length 19 [2022-01-18 05:13:34,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:34,456 INFO L470 AbstractCegarLoop]: Abstraction has 281 states and 856 transitions. [2022-01-18 05:13:34,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:34,456 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 856 transitions. [2022-01-18 05:13:34,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:34,457 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:34,457 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:34,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable285 [2022-01-18 05:13:34,457 INFO L402 AbstractCegarLoop]: === Iteration 287 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:34,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:34,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1959538486, now seen corresponding path program 38 times [2022-01-18 05:13:34,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:34,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239836508] [2022-01-18 05:13:34,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:34,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:34,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:34,486 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:34,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:34,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239836508] [2022-01-18 05:13:34,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239836508] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:13:34,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:13:34,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:13:34,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702578511] [2022-01-18 05:13:34,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:13:34,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:13:34,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:34,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:13:34,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:13:34,487 INFO L87 Difference]: Start difference. First operand 281 states and 856 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:34,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:34,584 INFO L93 Difference]: Finished difference Result 507 states and 1473 transitions. [2022-01-18 05:13:34,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:34,584 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:34,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:34,585 INFO L225 Difference]: With dead ends: 507 [2022-01-18 05:13:34,585 INFO L226 Difference]: Without dead ends: 499 [2022-01-18 05:13:34,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:13:34,585 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 69 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:34,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 63 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:34,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2022-01-18 05:13:34,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 281. [2022-01-18 05:13:34,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 280 states have (on average 3.0607142857142855) internal successors, (857), 280 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:34,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 857 transitions. [2022-01-18 05:13:34,589 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 857 transitions. Word has length 19 [2022-01-18 05:13:34,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:34,589 INFO L470 AbstractCegarLoop]: Abstraction has 281 states and 857 transitions. [2022-01-18 05:13:34,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:34,589 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 857 transitions. [2022-01-18 05:13:34,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:34,590 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:34,590 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:34,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable286 [2022-01-18 05:13:34,590 INFO L402 AbstractCegarLoop]: === Iteration 288 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:34,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:34,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1239246264, now seen corresponding path program 39 times [2022-01-18 05:13:34,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:34,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216092137] [2022-01-18 05:13:34,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:34,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:34,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:34,630 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:34,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:34,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216092137] [2022-01-18 05:13:34,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216092137] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:34,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516026257] [2022-01-18 05:13:34,630 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:13:34,630 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:34,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:34,631 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) [2022-01-18 05:13:34,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (153)] Waiting until timeout for monitored process [2022-01-18 05:13:34,653 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 05:13:34,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:34,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:34,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:34,745 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:34,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:34,822 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:34,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516026257] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:34,822 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:34,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-01-18 05:13:34,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969103871] [2022-01-18 05:13:34,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:34,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 05:13:34,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:34,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 05:13:34,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:34,823 INFO L87 Difference]: Start difference. First operand 281 states and 857 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:34,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:34,953 INFO L93 Difference]: Finished difference Result 628 states and 1784 transitions. [2022-01-18 05:13:34,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:34,953 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:34,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:34,954 INFO L225 Difference]: With dead ends: 628 [2022-01-18 05:13:34,954 INFO L226 Difference]: Without dead ends: 628 [2022-01-18 05:13:34,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-01-18 05:13:34,954 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 67 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:34,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 126 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:34,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2022-01-18 05:13:34,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 279. [2022-01-18 05:13:34,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 278 states have (on average 3.053956834532374) internal successors, (849), 278 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:34,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 849 transitions. [2022-01-18 05:13:34,958 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 849 transitions. Word has length 19 [2022-01-18 05:13:34,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:34,958 INFO L470 AbstractCegarLoop]: Abstraction has 279 states and 849 transitions. [2022-01-18 05:13:34,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:34,959 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 849 transitions. [2022-01-18 05:13:34,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:34,959 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:34,959 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:34,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (153)] Forceful destruction successful, exit code 0 [2022-01-18 05:13:35,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 153 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable287 [2022-01-18 05:13:35,175 INFO L402 AbstractCegarLoop]: === Iteration 289 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:35,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:35,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1541603698, now seen corresponding path program 39 times [2022-01-18 05:13:35,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:35,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966376820] [2022-01-18 05:13:35,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:35,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:35,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:35,206 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:35,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:35,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966376820] [2022-01-18 05:13:35,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966376820] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:35,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589100493] [2022-01-18 05:13:35,207 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:13:35,207 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:35,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:35,208 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) [2022-01-18 05:13:35,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (154)] Waiting until timeout for monitored process [2022-01-18 05:13:35,230 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 05:13:35,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:35,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:35,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:35,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:35,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:35,358 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:35,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589100493] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:35,358 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:35,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-01-18 05:13:35,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249973792] [2022-01-18 05:13:35,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:35,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 05:13:35,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:35,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 05:13:35,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:13:35,359 INFO L87 Difference]: Start difference. First operand 279 states and 849 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:35,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:35,453 INFO L93 Difference]: Finished difference Result 549 states and 1569 transitions. [2022-01-18 05:13:35,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:35,453 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:35,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:35,454 INFO L225 Difference]: With dead ends: 549 [2022-01-18 05:13:35,454 INFO L226 Difference]: Without dead ends: 541 [2022-01-18 05:13:35,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2022-01-18 05:13:35,454 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 101 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:35,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 82 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:35,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2022-01-18 05:13:35,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 272. [2022-01-18 05:13:35,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 271 states have (on average 3.062730627306273) internal successors, (830), 271 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:35,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 830 transitions. [2022-01-18 05:13:35,458 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 830 transitions. Word has length 19 [2022-01-18 05:13:35,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:35,459 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 830 transitions. [2022-01-18 05:13:35,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:35,459 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 830 transitions. [2022-01-18 05:13:35,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:35,459 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:35,459 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:35,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (154)] Forceful destruction successful, exit code 0 [2022-01-18 05:13:35,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 154 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable288 [2022-01-18 05:13:35,663 INFO L402 AbstractCegarLoop]: === Iteration 290 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:35,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:35,663 INFO L85 PathProgramCache]: Analyzing trace with hash -174482964, now seen corresponding path program 40 times [2022-01-18 05:13:35,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:35,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091921779] [2022-01-18 05:13:35,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:35,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:35,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:35,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:35,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:35,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091921779] [2022-01-18 05:13:35,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091921779] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:35,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389100258] [2022-01-18 05:13:35,699 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 05:13:35,699 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:35,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:35,700 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) [2022-01-18 05:13:35,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (155)] Waiting until timeout for monitored process [2022-01-18 05:13:35,722 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 05:13:35,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:35,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:35,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:35,803 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:35,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:35,871 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:35,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389100258] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:35,871 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:35,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-01-18 05:13:35,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956022335] [2022-01-18 05:13:35,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:35,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 05:13:35,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:35,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 05:13:35,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:35,872 INFO L87 Difference]: Start difference. First operand 272 states and 830 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:35,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:35,984 INFO L93 Difference]: Finished difference Result 576 states and 1637 transitions. [2022-01-18 05:13:35,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:35,984 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:35,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:35,985 INFO L225 Difference]: With dead ends: 576 [2022-01-18 05:13:35,985 INFO L226 Difference]: Without dead ends: 567 [2022-01-18 05:13:35,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2022-01-18 05:13:35,985 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 105 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:35,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 111 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:35,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2022-01-18 05:13:35,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 272. [2022-01-18 05:13:35,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 271 states have (on average 3.047970479704797) internal successors, (826), 271 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:35,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 826 transitions. [2022-01-18 05:13:35,989 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 826 transitions. Word has length 19 [2022-01-18 05:13:35,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:35,989 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 826 transitions. [2022-01-18 05:13:35,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:35,989 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 826 transitions. [2022-01-18 05:13:35,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:35,990 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:35,990 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:36,013 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (155)] Forceful destruction successful, exit code 0 [2022-01-18 05:13:36,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable289,155 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:36,206 INFO L402 AbstractCegarLoop]: === Iteration 291 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:36,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:36,206 INFO L85 PathProgramCache]: Analyzing trace with hash -2128651058, now seen corresponding path program 40 times [2022-01-18 05:13:36,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:36,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297317474] [2022-01-18 05:13:36,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:36,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:36,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:36,241 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:36,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:36,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297317474] [2022-01-18 05:13:36,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297317474] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:36,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871210921] [2022-01-18 05:13:36,242 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 05:13:36,242 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:36,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:36,243 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) [2022-01-18 05:13:36,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (156)] Waiting until timeout for monitored process [2022-01-18 05:13:36,264 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 05:13:36,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:36,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:36,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:36,336 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:36,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:36,395 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:36,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871210921] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:36,395 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:36,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-01-18 05:13:36,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681172889] [2022-01-18 05:13:36,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:36,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 05:13:36,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:36,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 05:13:36,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:13:36,396 INFO L87 Difference]: Start difference. First operand 272 states and 826 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:36,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:36,506 INFO L93 Difference]: Finished difference Result 530 states and 1549 transitions. [2022-01-18 05:13:36,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:36,506 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:36,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:36,507 INFO L225 Difference]: With dead ends: 530 [2022-01-18 05:13:36,507 INFO L226 Difference]: Without dead ends: 530 [2022-01-18 05:13:36,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2022-01-18 05:13:36,507 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 69 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:36,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 95 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:36,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2022-01-18 05:13:36,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 264. [2022-01-18 05:13:36,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 263 states have (on average 3.0190114068441063) internal successors, (794), 263 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:36,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 794 transitions. [2022-01-18 05:13:36,511 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 794 transitions. Word has length 19 [2022-01-18 05:13:36,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:36,511 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 794 transitions. [2022-01-18 05:13:36,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:36,511 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 794 transitions. [2022-01-18 05:13:36,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:36,511 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:36,511 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:36,526 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (156)] Ended with exit code 0 [2022-01-18 05:13:36,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable290,156 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:36,712 INFO L402 AbstractCegarLoop]: === Iteration 292 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:36,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:36,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1788024212, now seen corresponding path program 41 times [2022-01-18 05:13:36,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:36,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711928231] [2022-01-18 05:13:36,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:36,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:36,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:36,745 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:36,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:36,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711928231] [2022-01-18 05:13:36,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711928231] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:13:36,746 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:13:36,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:13:36,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106204223] [2022-01-18 05:13:36,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:13:36,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:13:36,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:36,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:13:36,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:13:36,746 INFO L87 Difference]: Start difference. First operand 264 states and 794 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:36,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:36,830 INFO L93 Difference]: Finished difference Result 551 states and 1548 transitions. [2022-01-18 05:13:36,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:36,830 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:36,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:36,831 INFO L225 Difference]: With dead ends: 551 [2022-01-18 05:13:36,831 INFO L226 Difference]: Without dead ends: 545 [2022-01-18 05:13:36,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:13:36,831 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 71 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:36,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 60 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:36,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2022-01-18 05:13:36,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 274. [2022-01-18 05:13:36,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 273 states have (on average 3.0) internal successors, (819), 273 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:36,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 819 transitions. [2022-01-18 05:13:36,835 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 819 transitions. Word has length 19 [2022-01-18 05:13:36,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:36,835 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 819 transitions. [2022-01-18 05:13:36,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:36,835 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 819 transitions. [2022-01-18 05:13:36,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:36,835 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:36,835 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:36,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable291 [2022-01-18 05:13:36,835 INFO L402 AbstractCegarLoop]: === Iteration 293 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:36,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:36,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1174389146, now seen corresponding path program 42 times [2022-01-18 05:13:36,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:36,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345307887] [2022-01-18 05:13:36,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:36,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:36,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:36,868 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:36,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:36,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345307887] [2022-01-18 05:13:36,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345307887] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:13:36,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:13:36,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:13:36,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39922102] [2022-01-18 05:13:36,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:13:36,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:13:36,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:36,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:13:36,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:13:36,869 INFO L87 Difference]: Start difference. First operand 274 states and 819 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:36,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:36,944 INFO L93 Difference]: Finished difference Result 515 states and 1465 transitions. [2022-01-18 05:13:36,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:36,945 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:36,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:36,945 INFO L225 Difference]: With dead ends: 515 [2022-01-18 05:13:36,945 INFO L226 Difference]: Without dead ends: 504 [2022-01-18 05:13:36,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:13:36,946 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 64 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:36,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 55 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:36,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2022-01-18 05:13:36,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 264. [2022-01-18 05:13:36,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 263 states have (on average 3.0152091254752853) internal successors, (793), 263 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:36,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 793 transitions. [2022-01-18 05:13:36,949 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 793 transitions. Word has length 19 [2022-01-18 05:13:36,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:36,949 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 793 transitions. [2022-01-18 05:13:36,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:36,949 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 793 transitions. [2022-01-18 05:13:36,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:36,950 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:36,950 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:36,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable292 [2022-01-18 05:13:36,950 INFO L402 AbstractCegarLoop]: === Iteration 294 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:36,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:36,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1706135118, now seen corresponding path program 41 times [2022-01-18 05:13:36,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:36,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704439616] [2022-01-18 05:13:36,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:36,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:36,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:36,981 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:36,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:36,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704439616] [2022-01-18 05:13:36,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704439616] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:13:36,981 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:13:36,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:13:36,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222499970] [2022-01-18 05:13:36,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:13:36,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:13:36,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:36,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:13:36,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:13:36,982 INFO L87 Difference]: Start difference. First operand 264 states and 793 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:37,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:37,074 INFO L93 Difference]: Finished difference Result 504 states and 1450 transitions. [2022-01-18 05:13:37,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:37,074 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:37,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:37,075 INFO L225 Difference]: With dead ends: 504 [2022-01-18 05:13:37,075 INFO L226 Difference]: Without dead ends: 498 [2022-01-18 05:13:37,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:13:37,075 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 76 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:37,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 66 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:37,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2022-01-18 05:13:37,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 276. [2022-01-18 05:13:37,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 275 states have (on average 3.018181818181818) internal successors, (830), 275 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:37,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 830 transitions. [2022-01-18 05:13:37,079 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 830 transitions. Word has length 19 [2022-01-18 05:13:37,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:37,079 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 830 transitions. [2022-01-18 05:13:37,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:37,079 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 830 transitions. [2022-01-18 05:13:37,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:37,079 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:37,079 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:37,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable293 [2022-01-18 05:13:37,080 INFO L402 AbstractCegarLoop]: === Iteration 295 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:37,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:37,080 INFO L85 PathProgramCache]: Analyzing trace with hash 426961526, now seen corresponding path program 42 times [2022-01-18 05:13:37,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:37,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207716697] [2022-01-18 05:13:37,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:37,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:37,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:37,115 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:37,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:37,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207716697] [2022-01-18 05:13:37,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207716697] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:13:37,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:13:37,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:13:37,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675380994] [2022-01-18 05:13:37,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:13:37,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:13:37,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:37,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:13:37,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:13:37,116 INFO L87 Difference]: Start difference. First operand 276 states and 830 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:37,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:37,215 INFO L93 Difference]: Finished difference Result 482 states and 1413 transitions. [2022-01-18 05:13:37,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:37,215 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:37,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:37,216 INFO L225 Difference]: With dead ends: 482 [2022-01-18 05:13:37,216 INFO L226 Difference]: Without dead ends: 482 [2022-01-18 05:13:37,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:13:37,216 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 53 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:37,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 70 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:37,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2022-01-18 05:13:37,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 261. [2022-01-18 05:13:37,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 260 states have (on average 3.0153846153846153) internal successors, (784), 260 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:37,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 784 transitions. [2022-01-18 05:13:37,219 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 784 transitions. Word has length 19 [2022-01-18 05:13:37,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:37,219 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 784 transitions. [2022-01-18 05:13:37,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:37,219 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 784 transitions. [2022-01-18 05:13:37,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:37,220 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:37,220 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:37,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable294 [2022-01-18 05:13:37,220 INFO L402 AbstractCegarLoop]: === Iteration 296 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:37,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:37,220 INFO L85 PathProgramCache]: Analyzing trace with hash 234227200, now seen corresponding path program 43 times [2022-01-18 05:13:37,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:37,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124029698] [2022-01-18 05:13:37,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:37,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:37,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:37,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:37,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:37,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124029698] [2022-01-18 05:13:37,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124029698] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:13:37,247 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:13:37,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:13:37,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326016926] [2022-01-18 05:13:37,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:13:37,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:13:37,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:37,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:13:37,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:13:37,248 INFO L87 Difference]: Start difference. First operand 261 states and 784 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:37,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:37,338 INFO L93 Difference]: Finished difference Result 407 states and 1153 transitions. [2022-01-18 05:13:37,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:37,338 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:37,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:37,339 INFO L225 Difference]: With dead ends: 407 [2022-01-18 05:13:37,339 INFO L226 Difference]: Without dead ends: 383 [2022-01-18 05:13:37,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:37,339 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 63 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:37,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 64 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:37,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2022-01-18 05:13:37,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 265. [2022-01-18 05:13:37,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 264 states have (on average 2.992424242424242) internal successors, (790), 264 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:37,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 790 transitions. [2022-01-18 05:13:37,343 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 790 transitions. Word has length 19 [2022-01-18 05:13:37,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:37,343 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 790 transitions. [2022-01-18 05:13:37,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:37,343 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 790 transitions. [2022-01-18 05:13:37,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:37,343 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:37,343 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:37,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable295 [2022-01-18 05:13:37,343 INFO L402 AbstractCegarLoop]: === Iteration 297 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:37,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:37,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1395726940, now seen corresponding path program 44 times [2022-01-18 05:13:37,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:37,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209190943] [2022-01-18 05:13:37,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:37,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:37,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:37,374 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:37,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:37,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209190943] [2022-01-18 05:13:37,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209190943] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:13:37,374 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:13:37,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:13:37,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526640614] [2022-01-18 05:13:37,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:13:37,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:13:37,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:37,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:13:37,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:13:37,374 INFO L87 Difference]: Start difference. First operand 265 states and 790 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:37,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:37,462 INFO L93 Difference]: Finished difference Result 430 states and 1198 transitions. [2022-01-18 05:13:37,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:37,463 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:37,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:37,463 INFO L225 Difference]: With dead ends: 430 [2022-01-18 05:13:37,463 INFO L226 Difference]: Without dead ends: 424 [2022-01-18 05:13:37,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:37,463 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 92 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:37,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 50 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:37,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2022-01-18 05:13:37,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 275. [2022-01-18 05:13:37,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 274 states have (on average 2.9744525547445257) internal successors, (815), 274 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:37,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 815 transitions. [2022-01-18 05:13:37,467 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 815 transitions. Word has length 19 [2022-01-18 05:13:37,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:37,467 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 815 transitions. [2022-01-18 05:13:37,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:37,467 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 815 transitions. [2022-01-18 05:13:37,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:37,467 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:37,467 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:37,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable296 [2022-01-18 05:13:37,467 INFO L402 AbstractCegarLoop]: === Iteration 298 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:37,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:37,468 INFO L85 PathProgramCache]: Analyzing trace with hash -468881226, now seen corresponding path program 45 times [2022-01-18 05:13:37,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:37,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822028102] [2022-01-18 05:13:37,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:37,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:37,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:37,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:37,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:37,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822028102] [2022-01-18 05:13:37,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822028102] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:13:37,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:13:37,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:13:37,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735633283] [2022-01-18 05:13:37,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:13:37,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:13:37,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:37,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:13:37,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:13:37,511 INFO L87 Difference]: Start difference. First operand 275 states and 815 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:37,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:37,596 INFO L93 Difference]: Finished difference Result 394 states and 1115 transitions. [2022-01-18 05:13:37,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:37,596 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:37,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:37,597 INFO L225 Difference]: With dead ends: 394 [2022-01-18 05:13:37,597 INFO L226 Difference]: Without dead ends: 379 [2022-01-18 05:13:37,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:37,597 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 73 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:37,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 48 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:37,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2022-01-18 05:13:37,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 261. [2022-01-18 05:13:37,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 260 states have (on average 3.0) internal successors, (780), 260 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:37,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 780 transitions. [2022-01-18 05:13:37,600 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 780 transitions. Word has length 19 [2022-01-18 05:13:37,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:37,600 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 780 transitions. [2022-01-18 05:13:37,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:37,600 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 780 transitions. [2022-01-18 05:13:37,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:37,601 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:37,601 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:37,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable297 [2022-01-18 05:13:37,601 INFO L402 AbstractCegarLoop]: === Iteration 299 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:37,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:37,601 INFO L85 PathProgramCache]: Analyzing trace with hash 248647576, now seen corresponding path program 46 times [2022-01-18 05:13:37,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:37,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198860376] [2022-01-18 05:13:37,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:37,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:37,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:37,627 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:37,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:37,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198860376] [2022-01-18 05:13:37,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198860376] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:13:37,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:13:37,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:13:37,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671199430] [2022-01-18 05:13:37,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:13:37,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:13:37,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:37,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:13:37,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:13:37,628 INFO L87 Difference]: Start difference. First operand 261 states and 780 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:37,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:37,717 INFO L93 Difference]: Finished difference Result 393 states and 1118 transitions. [2022-01-18 05:13:37,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:37,718 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:37,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:37,718 INFO L225 Difference]: With dead ends: 393 [2022-01-18 05:13:37,718 INFO L226 Difference]: Without dead ends: 381 [2022-01-18 05:13:37,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:37,718 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 68 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:37,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 51 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:37,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2022-01-18 05:13:37,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 263. [2022-01-18 05:13:37,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 262 states have (on average 2.9885496183206106) internal successors, (783), 262 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:37,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 783 transitions. [2022-01-18 05:13:37,722 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 783 transitions. Word has length 19 [2022-01-18 05:13:37,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:37,722 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 783 transitions. [2022-01-18 05:13:37,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:37,722 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 783 transitions. [2022-01-18 05:13:37,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:37,722 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:37,722 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:37,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable298 [2022-01-18 05:13:37,722 INFO L402 AbstractCegarLoop]: === Iteration 300 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:37,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:37,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1696416684, now seen corresponding path program 47 times [2022-01-18 05:13:37,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:37,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758548125] [2022-01-18 05:13:37,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:37,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:37,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:37,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:37,755 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:37,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758548125] [2022-01-18 05:13:37,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758548125] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:13:37,755 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:13:37,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:13:37,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006207231] [2022-01-18 05:13:37,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:13:37,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:13:37,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:37,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:13:37,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:13:37,756 INFO L87 Difference]: Start difference. First operand 263 states and 783 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:37,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:37,843 INFO L93 Difference]: Finished difference Result 381 states and 1080 transitions. [2022-01-18 05:13:37,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:37,843 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:37,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:37,844 INFO L225 Difference]: With dead ends: 381 [2022-01-18 05:13:37,844 INFO L226 Difference]: Without dead ends: 375 [2022-01-18 05:13:37,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:37,844 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 71 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:37,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 51 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:37,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2022-01-18 05:13:37,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 273. [2022-01-18 05:13:37,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 272 states have (on average 2.9705882352941178) internal successors, (808), 272 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:37,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 808 transitions. [2022-01-18 05:13:37,848 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 808 transitions. Word has length 19 [2022-01-18 05:13:37,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:37,848 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 808 transitions. [2022-01-18 05:13:37,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:37,848 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 808 transitions. [2022-01-18 05:13:37,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:37,848 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:37,848 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:37,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable299 [2022-01-18 05:13:37,848 INFO L402 AbstractCegarLoop]: === Iteration 301 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:37,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:37,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1671704898, now seen corresponding path program 48 times [2022-01-18 05:13:37,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:37,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035136740] [2022-01-18 05:13:37,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:37,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:37,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:37,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:37,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:37,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035136740] [2022-01-18 05:13:37,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035136740] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:13:37,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:13:37,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:13:37,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91384067] [2022-01-18 05:13:37,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:13:37,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:13:37,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:37,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:13:37,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:13:37,879 INFO L87 Difference]: Start difference. First operand 273 states and 808 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:37,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:37,960 INFO L93 Difference]: Finished difference Result 345 states and 997 transitions. [2022-01-18 05:13:37,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:37,961 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:37,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:37,961 INFO L225 Difference]: With dead ends: 345 [2022-01-18 05:13:37,961 INFO L226 Difference]: Without dead ends: 328 [2022-01-18 05:13:37,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:37,961 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 48 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:37,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 51 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 05:13:37,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2022-01-18 05:13:37,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 257. [2022-01-18 05:13:37,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 256 states have (on average 3.015625) internal successors, (772), 256 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:37,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 772 transitions. [2022-01-18 05:13:37,964 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 772 transitions. Word has length 19 [2022-01-18 05:13:37,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:37,965 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 772 transitions. [2022-01-18 05:13:37,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:37,965 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 772 transitions. [2022-01-18 05:13:37,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:37,965 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:37,965 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:37,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable300 [2022-01-18 05:13:37,965 INFO L402 AbstractCegarLoop]: === Iteration 302 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:37,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:37,965 INFO L85 PathProgramCache]: Analyzing trace with hash 677320894, now seen corresponding path program 43 times [2022-01-18 05:13:37,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:37,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045925969] [2022-01-18 05:13:37,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:37,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:37,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:37,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:37,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:37,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045925969] [2022-01-18 05:13:37,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045925969] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:37,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786065029] [2022-01-18 05:13:37,995 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 05:13:37,995 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:37,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:37,996 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) [2022-01-18 05:13:37,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (157)] Waiting until timeout for monitored process [2022-01-18 05:13:38,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:38,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:38,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:38,073 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:38,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:38,119 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:38,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786065029] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:38,119 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:38,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8 [2022-01-18 05:13:38,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548466606] [2022-01-18 05:13:38,119 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:38,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:13:38,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:38,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:13:38,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:13:38,119 INFO L87 Difference]: Start difference. First operand 257 states and 772 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:38,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:38,206 INFO L93 Difference]: Finished difference Result 449 states and 1320 transitions. [2022-01-18 05:13:38,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:38,207 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:38,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:38,207 INFO L225 Difference]: With dead ends: 449 [2022-01-18 05:13:38,207 INFO L226 Difference]: Without dead ends: 449 [2022-01-18 05:13:38,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-18 05:13:38,208 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 75 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:38,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 51 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:38,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2022-01-18 05:13:38,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 235. [2022-01-18 05:13:38,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 234 states have (on average 3.0213675213675213) internal successors, (707), 234 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:38,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 707 transitions. [2022-01-18 05:13:38,211 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 707 transitions. Word has length 19 [2022-01-18 05:13:38,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:38,211 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 707 transitions. [2022-01-18 05:13:38,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:38,211 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 707 transitions. [2022-01-18 05:13:38,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:38,211 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:38,211 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:38,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (157)] Forceful destruction successful, exit code 0 [2022-01-18 05:13:38,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 157 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable301 [2022-01-18 05:13:38,412 INFO L402 AbstractCegarLoop]: === Iteration 303 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:38,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:38,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1398973592, now seen corresponding path program 44 times [2022-01-18 05:13:38,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:38,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620600842] [2022-01-18 05:13:38,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:38,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:38,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:38,438 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:38,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:38,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620600842] [2022-01-18 05:13:38,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620600842] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:38,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974011475] [2022-01-18 05:13:38,438 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 05:13:38,438 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:38,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:38,439 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) [2022-01-18 05:13:38,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (158)] Waiting until timeout for monitored process [2022-01-18 05:13:38,461 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:13:38,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:38,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:38,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:38,512 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:38,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:38,555 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:38,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974011475] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:38,555 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:38,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-01-18 05:13:38,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322903727] [2022-01-18 05:13:38,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:38,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 05:13:38,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:38,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 05:13:38,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-01-18 05:13:38,556 INFO L87 Difference]: Start difference. First operand 235 states and 707 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:38,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:38,670 INFO L93 Difference]: Finished difference Result 437 states and 1251 transitions. [2022-01-18 05:13:38,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:38,670 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:38,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:38,671 INFO L225 Difference]: With dead ends: 437 [2022-01-18 05:13:38,671 INFO L226 Difference]: Without dead ends: 431 [2022-01-18 05:13:38,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 35 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-01-18 05:13:38,671 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 73 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:38,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 88 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:38,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2022-01-18 05:13:38,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 241. [2022-01-18 05:13:38,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 240 states have (on average 3.004166666666667) internal successors, (721), 240 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:38,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 721 transitions. [2022-01-18 05:13:38,674 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 721 transitions. Word has length 19 [2022-01-18 05:13:38,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:38,674 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 721 transitions. [2022-01-18 05:13:38,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:38,675 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 721 transitions. [2022-01-18 05:13:38,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:38,675 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:38,675 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:38,690 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (158)] Ended with exit code 0 [2022-01-18 05:13:38,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 158 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable302 [2022-01-18 05:13:38,875 INFO L402 AbstractCegarLoop]: === Iteration 304 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:38,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:38,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1991166676, now seen corresponding path program 45 times [2022-01-18 05:13:38,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:38,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279247090] [2022-01-18 05:13:38,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:38,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:38,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:38,907 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:38,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:38,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279247090] [2022-01-18 05:13:38,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279247090] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:38,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884246661] [2022-01-18 05:13:38,907 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:13:38,907 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:38,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:38,908 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) [2022-01-18 05:13:38,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (159)] Waiting until timeout for monitored process [2022-01-18 05:13:38,929 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 05:13:38,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:38,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:38,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:38,981 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:38,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:39,024 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:39,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884246661] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:39,024 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:39,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-01-18 05:13:39,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909284078] [2022-01-18 05:13:39,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:39,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 05:13:39,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:39,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 05:13:39,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-18 05:13:39,024 INFO L87 Difference]: Start difference. First operand 241 states and 721 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:39,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:39,122 INFO L93 Difference]: Finished difference Result 415 states and 1214 transitions. [2022-01-18 05:13:39,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:39,122 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:39,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:39,123 INFO L225 Difference]: With dead ends: 415 [2022-01-18 05:13:39,123 INFO L226 Difference]: Without dead ends: 415 [2022-01-18 05:13:39,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2022-01-18 05:13:39,123 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 74 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:39,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 62 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:39,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2022-01-18 05:13:39,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 214. [2022-01-18 05:13:39,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 3.0) internal successors, (639), 213 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:39,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 639 transitions. [2022-01-18 05:13:39,126 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 639 transitions. Word has length 19 [2022-01-18 05:13:39,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:39,126 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 639 transitions. [2022-01-18 05:13:39,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:39,126 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 639 transitions. [2022-01-18 05:13:39,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:39,126 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:39,126 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:39,141 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (159)] Ended with exit code 0 [2022-01-18 05:13:39,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable303,159 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:39,327 INFO L402 AbstractCegarLoop]: === Iteration 305 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:39,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:39,327 INFO L85 PathProgramCache]: Analyzing trace with hash -2128879946, now seen corresponding path program 46 times [2022-01-18 05:13:39,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:39,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391649134] [2022-01-18 05:13:39,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:39,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:39,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:39,364 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:39,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:39,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391649134] [2022-01-18 05:13:39,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391649134] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:39,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119435275] [2022-01-18 05:13:39,365 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 05:13:39,365 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:39,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:39,366 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) [2022-01-18 05:13:39,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (160)] Waiting until timeout for monitored process [2022-01-18 05:13:39,387 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 05:13:39,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:39,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:39,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:39,431 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:39,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:39,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:39,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119435275] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:39,466 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:39,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-01-18 05:13:39,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120916633] [2022-01-18 05:13:39,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:39,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 05:13:39,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:39,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 05:13:39,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-01-18 05:13:39,466 INFO L87 Difference]: Start difference. First operand 214 states and 639 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:39,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:39,557 INFO L93 Difference]: Finished difference Result 367 states and 1064 transitions. [2022-01-18 05:13:39,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:39,557 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:39,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:39,557 INFO L225 Difference]: With dead ends: 367 [2022-01-18 05:13:39,557 INFO L226 Difference]: Without dead ends: 355 [2022-01-18 05:13:39,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-01-18 05:13:39,558 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 81 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:39,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 66 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:39,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2022-01-18 05:13:39,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 217. [2022-01-18 05:13:39,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 3.0) internal successors, (648), 216 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:39,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 648 transitions. [2022-01-18 05:13:39,560 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 648 transitions. Word has length 19 [2022-01-18 05:13:39,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:39,560 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 648 transitions. [2022-01-18 05:13:39,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:39,560 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 648 transitions. [2022-01-18 05:13:39,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:39,561 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:39,561 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:39,576 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (160)] Ended with exit code 0 [2022-01-18 05:13:39,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable304,160 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:39,761 INFO L402 AbstractCegarLoop]: === Iteration 306 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:39,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:39,761 INFO L85 PathProgramCache]: Analyzing trace with hash 956461618, now seen corresponding path program 47 times [2022-01-18 05:13:39,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:39,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992097529] [2022-01-18 05:13:39,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:39,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:39,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:39,796 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:39,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:39,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992097529] [2022-01-18 05:13:39,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992097529] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:39,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994824509] [2022-01-18 05:13:39,796 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 05:13:39,796 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:39,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:39,797 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) [2022-01-18 05:13:39,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (161)] Waiting until timeout for monitored process [2022-01-18 05:13:39,819 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:13:39,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:39,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:39,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:39,876 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:39,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:39,921 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:39,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994824509] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:39,921 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:39,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-01-18 05:13:39,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408421084] [2022-01-18 05:13:39,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:39,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 05:13:39,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:39,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 05:13:39,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:13:39,922 INFO L87 Difference]: Start difference. First operand 217 states and 648 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:40,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:40,036 INFO L93 Difference]: Finished difference Result 355 states and 1025 transitions. [2022-01-18 05:13:40,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:40,036 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:40,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:40,037 INFO L225 Difference]: With dead ends: 355 [2022-01-18 05:13:40,037 INFO L226 Difference]: Without dead ends: 349 [2022-01-18 05:13:40,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2022-01-18 05:13:40,037 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 67 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:40,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 91 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:40,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2022-01-18 05:13:40,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 229. [2022-01-18 05:13:40,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 228 states have (on average 3.013157894736842) internal successors, (687), 228 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:40,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 687 transitions. [2022-01-18 05:13:40,040 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 687 transitions. Word has length 19 [2022-01-18 05:13:40,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:40,040 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 687 transitions. [2022-01-18 05:13:40,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:40,040 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 687 transitions. [2022-01-18 05:13:40,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:40,040 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:40,040 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:40,055 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (161)] Ended with exit code 0 [2022-01-18 05:13:40,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable305,161 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:40,241 INFO L402 AbstractCegarLoop]: === Iteration 307 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:40,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:40,241 INFO L85 PathProgramCache]: Analyzing trace with hash 364268534, now seen corresponding path program 48 times [2022-01-18 05:13:40,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:40,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100649524] [2022-01-18 05:13:40,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:40,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:40,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:40,276 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:40,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:40,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100649524] [2022-01-18 05:13:40,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100649524] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:40,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615871070] [2022-01-18 05:13:40,276 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 05:13:40,276 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:40,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:40,277 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) [2022-01-18 05:13:40,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (162)] Waiting until timeout for monitored process [2022-01-18 05:13:40,300 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 05:13:40,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:40,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:40,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:40,358 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:40,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:40,402 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:40,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615871070] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:40,402 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:40,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-01-18 05:13:40,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913144035] [2022-01-18 05:13:40,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:40,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 05:13:40,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:40,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 05:13:40,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:13:40,403 INFO L87 Difference]: Start difference. First operand 229 states and 687 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:40,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:40,520 INFO L93 Difference]: Finished difference Result 320 states and 940 transitions. [2022-01-18 05:13:40,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:40,521 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:40,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:40,521 INFO L225 Difference]: With dead ends: 320 [2022-01-18 05:13:40,521 INFO L226 Difference]: Without dead ends: 320 [2022-01-18 05:13:40,521 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-01-18 05:13:40,521 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 53 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:40,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 90 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:40,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2022-01-18 05:13:40,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 215. [2022-01-18 05:13:40,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 3.0046728971962615) internal successors, (643), 214 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:40,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 643 transitions. [2022-01-18 05:13:40,524 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 643 transitions. Word has length 19 [2022-01-18 05:13:40,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:40,524 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 643 transitions. [2022-01-18 05:13:40,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:40,524 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 643 transitions. [2022-01-18 05:13:40,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:40,524 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:40,524 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:40,540 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (162)] Ended with exit code 0 [2022-01-18 05:13:40,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable306,162 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:40,725 INFO L402 AbstractCegarLoop]: === Iteration 308 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:40,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:40,725 INFO L85 PathProgramCache]: Analyzing trace with hash 334779126, now seen corresponding path program 49 times [2022-01-18 05:13:40,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:40,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495502683] [2022-01-18 05:13:40,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:40,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:40,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:40,764 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:40,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:40,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495502683] [2022-01-18 05:13:40,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495502683] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:40,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512202094] [2022-01-18 05:13:40,764 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 05:13:40,764 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:40,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:40,765 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) [2022-01-18 05:13:40,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (163)] Waiting until timeout for monitored process [2022-01-18 05:13:40,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:40,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:40,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:40,872 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:40,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:40,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:40,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512202094] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:40,949 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:40,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-01-18 05:13:40,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580307451] [2022-01-18 05:13:40,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:40,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 05:13:40,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:40,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 05:13:40,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:40,950 INFO L87 Difference]: Start difference. First operand 215 states and 643 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:41,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:41,044 INFO L93 Difference]: Finished difference Result 450 states and 1301 transitions. [2022-01-18 05:13:41,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:41,044 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:41,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:41,045 INFO L225 Difference]: With dead ends: 450 [2022-01-18 05:13:41,045 INFO L226 Difference]: Without dead ends: 450 [2022-01-18 05:13:41,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-01-18 05:13:41,045 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 106 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:41,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 68 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:41,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-01-18 05:13:41,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 222. [2022-01-18 05:13:41,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 221 states have (on average 3.0407239819004523) internal successors, (672), 221 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:41,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 672 transitions. [2022-01-18 05:13:41,048 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 672 transitions. Word has length 19 [2022-01-18 05:13:41,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:41,049 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 672 transitions. [2022-01-18 05:13:41,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:41,049 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 672 transitions. [2022-01-18 05:13:41,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:41,049 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:41,049 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:41,064 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (163)] Ended with exit code 0 [2022-01-18 05:13:41,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 163 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable307 [2022-01-18 05:13:41,249 INFO L402 AbstractCegarLoop]: === Iteration 309 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:41,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:41,250 INFO L85 PathProgramCache]: Analyzing trace with hash 173559186, now seen corresponding path program 50 times [2022-01-18 05:13:41,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:41,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490449351] [2022-01-18 05:13:41,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:41,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:41,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:41,285 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:41,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:41,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490449351] [2022-01-18 05:13:41,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490449351] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:41,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653609401] [2022-01-18 05:13:41,285 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 05:13:41,285 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:41,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:41,286 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) [2022-01-18 05:13:41,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (164)] Waiting until timeout for monitored process [2022-01-18 05:13:41,308 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:13:41,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:41,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:41,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:41,380 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:41,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:41,443 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:41,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653609401] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:41,443 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:41,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-01-18 05:13:41,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416782109] [2022-01-18 05:13:41,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:41,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 05:13:41,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:41,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 05:13:41,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:41,444 INFO L87 Difference]: Start difference. First operand 222 states and 672 transitions. Second operand has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:41,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:41,553 INFO L93 Difference]: Finished difference Result 456 states and 1310 transitions. [2022-01-18 05:13:41,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:41,553 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:41,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:41,553 INFO L225 Difference]: With dead ends: 456 [2022-01-18 05:13:41,554 INFO L226 Difference]: Without dead ends: 450 [2022-01-18 05:13:41,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-01-18 05:13:41,554 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 90 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:41,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 92 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:41,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-01-18 05:13:41,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 219. [2022-01-18 05:13:41,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 3.0275229357798166) internal successors, (660), 218 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:41,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 660 transitions. [2022-01-18 05:13:41,557 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 660 transitions. Word has length 19 [2022-01-18 05:13:41,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:41,557 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 660 transitions. [2022-01-18 05:13:41,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:41,557 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 660 transitions. [2022-01-18 05:13:41,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:41,557 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:41,557 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:41,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (164)] Forceful destruction successful, exit code 0 [2022-01-18 05:13:41,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable308,164 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:41,758 INFO L402 AbstractCegarLoop]: === Iteration 310 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:41,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:41,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1855396096, now seen corresponding path program 51 times [2022-01-18 05:13:41,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:41,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924154399] [2022-01-18 05:13:41,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:41,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:41,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:41,788 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:41,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:41,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924154399] [2022-01-18 05:13:41,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924154399] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:41,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130345860] [2022-01-18 05:13:41,788 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:13:41,788 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:41,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:41,789 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) [2022-01-18 05:13:41,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (165)] Waiting until timeout for monitored process [2022-01-18 05:13:41,811 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 05:13:41,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:41,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:41,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:41,868 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:41,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:41,922 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:41,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130345860] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:41,922 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:41,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-01-18 05:13:41,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321273278] [2022-01-18 05:13:41,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:41,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 05:13:41,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:41,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 05:13:41,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:13:41,923 INFO L87 Difference]: Start difference. First operand 219 states and 660 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:42,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:42,024 INFO L93 Difference]: Finished difference Result 447 states and 1277 transitions. [2022-01-18 05:13:42,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:42,024 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:42,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:42,025 INFO L225 Difference]: With dead ends: 447 [2022-01-18 05:13:42,025 INFO L226 Difference]: Without dead ends: 435 [2022-01-18 05:13:42,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-01-18 05:13:42,025 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 79 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:42,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 89 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:42,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2022-01-18 05:13:42,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 217. [2022-01-18 05:13:42,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 3.0185185185185186) internal successors, (652), 216 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:42,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 652 transitions. [2022-01-18 05:13:42,028 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 652 transitions. Word has length 19 [2022-01-18 05:13:42,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:42,028 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 652 transitions. [2022-01-18 05:13:42,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:42,028 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 652 transitions. [2022-01-18 05:13:42,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:42,029 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:42,029 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:42,044 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (165)] Forceful destruction successful, exit code 0 [2022-01-18 05:13:42,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 165 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable309 [2022-01-18 05:13:42,229 INFO L402 AbstractCegarLoop]: === Iteration 311 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:42,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:42,229 INFO L85 PathProgramCache]: Analyzing trace with hash 892713506, now seen corresponding path program 49 times [2022-01-18 05:13:42,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:42,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538898440] [2022-01-18 05:13:42,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:42,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:42,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:42,259 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:42,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:42,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538898440] [2022-01-18 05:13:42,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538898440] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:13:42,259 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:13:42,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:13:42,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349162942] [2022-01-18 05:13:42,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:13:42,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:13:42,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:42,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:13:42,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:13:42,260 INFO L87 Difference]: Start difference. First operand 217 states and 652 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:42,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:42,368 INFO L93 Difference]: Finished difference Result 362 states and 1035 transitions. [2022-01-18 05:13:42,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:42,368 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:42,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:42,369 INFO L225 Difference]: With dead ends: 362 [2022-01-18 05:13:42,369 INFO L226 Difference]: Without dead ends: 354 [2022-01-18 05:13:42,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:42,369 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 64 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:42,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 61 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:42,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2022-01-18 05:13:42,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 234. [2022-01-18 05:13:42,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 3.0) internal successors, (699), 233 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:42,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 699 transitions. [2022-01-18 05:13:42,372 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 699 transitions. Word has length 19 [2022-01-18 05:13:42,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:42,372 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 699 transitions. [2022-01-18 05:13:42,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:42,372 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 699 transitions. [2022-01-18 05:13:42,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:42,372 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:42,372 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:42,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable310 [2022-01-18 05:13:42,372 INFO L402 AbstractCegarLoop]: === Iteration 312 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:42,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:42,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1800374918, now seen corresponding path program 50 times [2022-01-18 05:13:42,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:42,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015759732] [2022-01-18 05:13:42,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:42,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:42,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:42,402 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:42,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:42,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015759732] [2022-01-18 05:13:42,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015759732] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:13:42,402 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:13:42,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:13:42,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311747797] [2022-01-18 05:13:42,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:13:42,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:13:42,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:42,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:13:42,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:13:42,403 INFO L87 Difference]: Start difference. First operand 234 states and 699 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:42,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:42,518 INFO L93 Difference]: Finished difference Result 360 states and 1030 transitions. [2022-01-18 05:13:42,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:42,519 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:42,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:42,519 INFO L225 Difference]: With dead ends: 360 [2022-01-18 05:13:42,519 INFO L226 Difference]: Without dead ends: 352 [2022-01-18 05:13:42,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:42,519 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 65 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:42,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 60 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:42,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2022-01-18 05:13:42,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 232. [2022-01-18 05:13:42,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 2.9956709956709955) internal successors, (692), 231 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:42,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 692 transitions. [2022-01-18 05:13:42,522 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 692 transitions. Word has length 19 [2022-01-18 05:13:42,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:42,522 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 692 transitions. [2022-01-18 05:13:42,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:42,522 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 692 transitions. [2022-01-18 05:13:42,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:42,523 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:42,523 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:42,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable311 [2022-01-18 05:13:42,523 INFO L402 AbstractCegarLoop]: === Iteration 313 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:42,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:42,523 INFO L85 PathProgramCache]: Analyzing trace with hash 28778358, now seen corresponding path program 51 times [2022-01-18 05:13:42,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:42,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791538714] [2022-01-18 05:13:42,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:42,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:42,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:42,549 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:42,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:42,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791538714] [2022-01-18 05:13:42,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791538714] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:13:42,550 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:13:42,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:13:42,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711451175] [2022-01-18 05:13:42,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:13:42,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:13:42,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:42,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:13:42,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:13:42,550 INFO L87 Difference]: Start difference. First operand 232 states and 692 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:42,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:42,643 INFO L93 Difference]: Finished difference Result 374 states and 1071 transitions. [2022-01-18 05:13:42,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:42,643 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:42,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:42,644 INFO L225 Difference]: With dead ends: 374 [2022-01-18 05:13:42,644 INFO L226 Difference]: Without dead ends: 360 [2022-01-18 05:13:42,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:42,644 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 67 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:42,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 55 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:42,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2022-01-18 05:13:42,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 230. [2022-01-18 05:13:42,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 229 states have (on average 2.995633187772926) internal successors, (686), 229 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:42,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 686 transitions. [2022-01-18 05:13:42,647 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 686 transitions. Word has length 19 [2022-01-18 05:13:42,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:42,647 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 686 transitions. [2022-01-18 05:13:42,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:42,647 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 686 transitions. [2022-01-18 05:13:42,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:42,648 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:42,648 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:42,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable312 [2022-01-18 05:13:42,648 INFO L402 AbstractCegarLoop]: === Iteration 314 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:42,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:42,648 INFO L85 PathProgramCache]: Analyzing trace with hash 71488010, now seen corresponding path program 52 times [2022-01-18 05:13:42,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:42,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775972378] [2022-01-18 05:13:42,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:42,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:42,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:42,687 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:42,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:42,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775972378] [2022-01-18 05:13:42,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775972378] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:42,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914945918] [2022-01-18 05:13:42,688 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 05:13:42,688 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:42,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:42,688 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) [2022-01-18 05:13:42,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (166)] Waiting until timeout for monitored process [2022-01-18 05:13:42,710 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 05:13:42,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:42,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:42,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:42,803 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:42,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:42,880 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:42,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914945918] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:42,880 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:42,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-01-18 05:13:42,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455520205] [2022-01-18 05:13:42,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:42,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 05:13:42,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:42,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 05:13:42,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:42,881 INFO L87 Difference]: Start difference. First operand 230 states and 686 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:42,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:42,978 INFO L93 Difference]: Finished difference Result 520 states and 1485 transitions. [2022-01-18 05:13:42,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:42,978 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:42,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:42,979 INFO L225 Difference]: With dead ends: 520 [2022-01-18 05:13:42,979 INFO L226 Difference]: Without dead ends: 520 [2022-01-18 05:13:42,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-01-18 05:13:42,979 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 117 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:42,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 81 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:42,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2022-01-18 05:13:42,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 238. [2022-01-18 05:13:42,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 3.0548523206751055) internal successors, (724), 237 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:42,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 724 transitions. [2022-01-18 05:13:42,982 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 724 transitions. Word has length 19 [2022-01-18 05:13:42,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:42,982 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 724 transitions. [2022-01-18 05:13:42,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:42,982 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 724 transitions. [2022-01-18 05:13:42,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:42,983 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:42,983 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:42,998 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (166)] Ended with exit code 0 [2022-01-18 05:13:43,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 166 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable313 [2022-01-18 05:13:43,183 INFO L402 AbstractCegarLoop]: === Iteration 315 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:43,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:43,183 INFO L85 PathProgramCache]: Analyzing trace with hash -89731930, now seen corresponding path program 53 times [2022-01-18 05:13:43,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:43,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799243023] [2022-01-18 05:13:43,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:43,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:43,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:43,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:43,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:43,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799243023] [2022-01-18 05:13:43,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799243023] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:43,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076221548] [2022-01-18 05:13:43,218 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 05:13:43,219 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:43,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:43,219 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) [2022-01-18 05:13:43,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (167)] Waiting until timeout for monitored process [2022-01-18 05:13:43,242 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:13:43,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:43,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:43,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:43,318 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:43,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:43,382 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:43,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076221548] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:43,382 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:43,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-01-18 05:13:43,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491200749] [2022-01-18 05:13:43,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:43,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 05:13:43,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:43,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 05:13:43,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:43,382 INFO L87 Difference]: Start difference. First operand 238 states and 724 transitions. Second operand has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:43,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:43,482 INFO L93 Difference]: Finished difference Result 502 states and 1416 transitions. [2022-01-18 05:13:43,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:43,482 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:43,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:43,483 INFO L225 Difference]: With dead ends: 502 [2022-01-18 05:13:43,483 INFO L226 Difference]: Without dead ends: 496 [2022-01-18 05:13:43,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2022-01-18 05:13:43,483 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 119 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:43,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 98 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:43,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2022-01-18 05:13:43,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 241. [2022-01-18 05:13:43,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 240 states have (on average 3.029166666666667) internal successors, (727), 240 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:43,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 727 transitions. [2022-01-18 05:13:43,486 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 727 transitions. Word has length 19 [2022-01-18 05:13:43,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:43,487 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 727 transitions. [2022-01-18 05:13:43,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:43,487 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 727 transitions. [2022-01-18 05:13:43,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:43,487 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:43,487 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:43,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (167)] Forceful destruction successful, exit code 0 [2022-01-18 05:13:43,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 167 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable314 [2022-01-18 05:13:43,687 INFO L402 AbstractCegarLoop]: === Iteration 316 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:43,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:43,688 INFO L85 PathProgramCache]: Analyzing trace with hash -291855066, now seen corresponding path program 52 times [2022-01-18 05:13:43,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:43,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007260265] [2022-01-18 05:13:43,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:43,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:43,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:43,719 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:43,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:43,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007260265] [2022-01-18 05:13:43,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007260265] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:13:43,720 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:13:43,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:13:43,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433973799] [2022-01-18 05:13:43,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:13:43,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:13:43,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:43,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:13:43,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:13:43,720 INFO L87 Difference]: Start difference. First operand 241 states and 727 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:43,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:43,821 INFO L93 Difference]: Finished difference Result 412 states and 1155 transitions. [2022-01-18 05:13:43,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:43,821 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:43,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:43,822 INFO L225 Difference]: With dead ends: 412 [2022-01-18 05:13:43,822 INFO L226 Difference]: Without dead ends: 404 [2022-01-18 05:13:43,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:43,822 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 82 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:43,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 55 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:43,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2022-01-18 05:13:43,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 251. [2022-01-18 05:13:43,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 250 states have (on average 3.048) internal successors, (762), 250 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:43,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 762 transitions. [2022-01-18 05:13:43,825 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 762 transitions. Word has length 19 [2022-01-18 05:13:43,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:43,825 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 762 transitions. [2022-01-18 05:13:43,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:43,825 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 762 transitions. [2022-01-18 05:13:43,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:43,825 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:43,825 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:43,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable315 [2022-01-18 05:13:43,826 INFO L402 AbstractCegarLoop]: === Iteration 317 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:43,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:43,826 INFO L85 PathProgramCache]: Analyzing trace with hash 615806346, now seen corresponding path program 53 times [2022-01-18 05:13:43,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:43,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657549105] [2022-01-18 05:13:43,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:43,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:43,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:43,859 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:43,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:43,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657549105] [2022-01-18 05:13:43,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657549105] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:13:43,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:13:43,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:13:43,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904898471] [2022-01-18 05:13:43,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:13:43,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:13:43,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:43,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:13:43,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:13:43,860 INFO L87 Difference]: Start difference. First operand 251 states and 762 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:43,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:43,960 INFO L93 Difference]: Finished difference Result 418 states and 1170 transitions. [2022-01-18 05:13:43,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:43,960 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:43,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:43,960 INFO L225 Difference]: With dead ends: 418 [2022-01-18 05:13:43,960 INFO L226 Difference]: Without dead ends: 410 [2022-01-18 05:13:43,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:43,961 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 81 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:43,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 57 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:43,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2022-01-18 05:13:43,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 249. [2022-01-18 05:13:43,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 248 states have (on average 3.056451612903226) internal successors, (758), 248 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:43,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 758 transitions. [2022-01-18 05:13:43,964 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 758 transitions. Word has length 19 [2022-01-18 05:13:43,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:43,964 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 758 transitions. [2022-01-18 05:13:43,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:43,964 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 758 transitions. [2022-01-18 05:13:43,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:43,964 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:43,964 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:43,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable316 [2022-01-18 05:13:43,965 INFO L402 AbstractCegarLoop]: === Iteration 318 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:43,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:43,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1711988892, now seen corresponding path program 54 times [2022-01-18 05:13:43,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:43,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165068495] [2022-01-18 05:13:43,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:43,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:43,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:44,018 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:44,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:44,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165068495] [2022-01-18 05:13:44,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165068495] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:44,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461412255] [2022-01-18 05:13:44,018 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 05:13:44,018 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:44,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:44,019 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) [2022-01-18 05:13:44,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (168)] Waiting until timeout for monitored process [2022-01-18 05:13:44,045 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 05:13:44,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:44,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:44,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:44,139 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:44,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:44,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:44,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461412255] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:44,229 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:44,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-01-18 05:13:44,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675912689] [2022-01-18 05:13:44,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:44,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 05:13:44,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:44,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 05:13:44,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:44,229 INFO L87 Difference]: Start difference. First operand 249 states and 758 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:44,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:44,345 INFO L93 Difference]: Finished difference Result 466 states and 1335 transitions. [2022-01-18 05:13:44,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:44,345 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:44,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:44,346 INFO L225 Difference]: With dead ends: 466 [2022-01-18 05:13:44,346 INFO L226 Difference]: Without dead ends: 466 [2022-01-18 05:13:44,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-01-18 05:13:44,346 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 65 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:44,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 113 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:44,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2022-01-18 05:13:44,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 247. [2022-01-18 05:13:44,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 246 states have (on average 3.048780487804878) internal successors, (750), 246 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:44,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 750 transitions. [2022-01-18 05:13:44,349 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 750 transitions. Word has length 19 [2022-01-18 05:13:44,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:44,350 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 750 transitions. [2022-01-18 05:13:44,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:44,350 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 750 transitions. [2022-01-18 05:13:44,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:44,350 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:44,350 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:44,365 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (168)] Ended with exit code 0 [2022-01-18 05:13:44,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 168 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable317 [2022-01-18 05:13:44,550 INFO L402 AbstractCegarLoop]: === Iteration 319 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:44,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:44,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1409631458, now seen corresponding path program 54 times [2022-01-18 05:13:44,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:44,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242258950] [2022-01-18 05:13:44,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:44,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:44,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:44,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:44,585 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:44,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242258950] [2022-01-18 05:13:44,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242258950] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:44,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758689775] [2022-01-18 05:13:44,585 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 05:13:44,585 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:44,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:44,586 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) [2022-01-18 05:13:44,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (169)] Waiting until timeout for monitored process [2022-01-18 05:13:44,608 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 05:13:44,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:44,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:44,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:44,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:44,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:44,748 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:44,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758689775] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:44,749 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:44,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-01-18 05:13:44,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299872523] [2022-01-18 05:13:44,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:44,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 05:13:44,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:44,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 05:13:44,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:44,749 INFO L87 Difference]: Start difference. First operand 247 states and 750 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:44,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:44,853 INFO L93 Difference]: Finished difference Result 366 states and 1036 transitions. [2022-01-18 05:13:44,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:44,853 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:44,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:44,854 INFO L225 Difference]: With dead ends: 366 [2022-01-18 05:13:44,854 INFO L226 Difference]: Without dead ends: 358 [2022-01-18 05:13:44,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2022-01-18 05:13:44,854 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 88 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:44,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 93 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:44,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2022-01-18 05:13:44,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 240. [2022-01-18 05:13:44,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 239 states have (on average 3.0585774058577404) internal successors, (731), 239 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:44,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 731 transitions. [2022-01-18 05:13:44,857 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 731 transitions. Word has length 19 [2022-01-18 05:13:44,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:44,857 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 731 transitions. [2022-01-18 05:13:44,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:44,857 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 731 transitions. [2022-01-18 05:13:44,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:44,858 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:44,858 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:44,873 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (169)] Ended with exit code 0 [2022-01-18 05:13:45,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable318,169 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:45,058 INFO L402 AbstractCegarLoop]: === Iteration 320 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:45,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:45,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1518215104, now seen corresponding path program 55 times [2022-01-18 05:13:45,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:45,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187507206] [2022-01-18 05:13:45,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:45,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:45,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:45,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:45,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:45,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187507206] [2022-01-18 05:13:45,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187507206] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:45,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439474828] [2022-01-18 05:13:45,098 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 05:13:45,098 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:45,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:45,099 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) [2022-01-18 05:13:45,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (170)] Waiting until timeout for monitored process [2022-01-18 05:13:45,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:45,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:45,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:45,203 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:45,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:45,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:45,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439474828] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:45,274 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:45,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-01-18 05:13:45,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77321228] [2022-01-18 05:13:45,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:45,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 05:13:45,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:45,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 05:13:45,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:45,274 INFO L87 Difference]: Start difference. First operand 240 states and 731 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:45,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:45,382 INFO L93 Difference]: Finished difference Result 414 states and 1188 transitions. [2022-01-18 05:13:45,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:45,383 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:45,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:45,383 INFO L225 Difference]: With dead ends: 414 [2022-01-18 05:13:45,383 INFO L226 Difference]: Without dead ends: 405 [2022-01-18 05:13:45,383 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2022-01-18 05:13:45,384 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 69 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:45,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 108 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:45,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2022-01-18 05:13:45,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 240. [2022-01-18 05:13:45,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 239 states have (on average 3.0418410041841004) internal successors, (727), 239 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:45,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 727 transitions. [2022-01-18 05:13:45,387 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 727 transitions. Word has length 19 [2022-01-18 05:13:45,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:45,387 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 727 transitions. [2022-01-18 05:13:45,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:45,387 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 727 transitions. [2022-01-18 05:13:45,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:45,387 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:45,387 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:45,402 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (170)] Ended with exit code 0 [2022-01-18 05:13:45,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable319,170 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:45,588 INFO L402 AbstractCegarLoop]: === Iteration 321 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:45,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:45,588 INFO L85 PathProgramCache]: Analyzing trace with hash 822584098, now seen corresponding path program 55 times [2022-01-18 05:13:45,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:45,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690832870] [2022-01-18 05:13:45,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:45,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:45,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:45,627 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:45,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:45,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690832870] [2022-01-18 05:13:45,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690832870] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:45,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512678747] [2022-01-18 05:13:45,627 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 05:13:45,627 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:45,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:45,628 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) [2022-01-18 05:13:45,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (171)] Waiting until timeout for monitored process [2022-01-18 05:13:45,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:45,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:45,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:45,735 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:45,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:45,799 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:45,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512678747] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:45,799 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:45,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-01-18 05:13:45,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81146129] [2022-01-18 05:13:45,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:45,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 05:13:45,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:45,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 05:13:45,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:45,800 INFO L87 Difference]: Start difference. First operand 240 states and 727 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:45,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:45,889 INFO L93 Difference]: Finished difference Result 347 states and 1016 transitions. [2022-01-18 05:13:45,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:45,890 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:45,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:45,890 INFO L225 Difference]: With dead ends: 347 [2022-01-18 05:13:45,890 INFO L226 Difference]: Without dead ends: 347 [2022-01-18 05:13:45,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-01-18 05:13:45,891 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 90 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:45,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 67 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:45,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2022-01-18 05:13:45,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 236. [2022-01-18 05:13:45,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 235 states have (on average 3.0425531914893615) internal successors, (715), 235 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:45,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 715 transitions. [2022-01-18 05:13:45,893 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 715 transitions. Word has length 19 [2022-01-18 05:13:45,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:45,894 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 715 transitions. [2022-01-18 05:13:45,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:45,894 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 715 transitions. [2022-01-18 05:13:45,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:45,894 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:45,894 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:45,910 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (171)] Forceful destruction successful, exit code 0 [2022-01-18 05:13:46,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 171 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable320 [2022-01-18 05:13:46,094 INFO L402 AbstractCegarLoop]: === Iteration 322 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:46,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:46,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1163210944, now seen corresponding path program 56 times [2022-01-18 05:13:46,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:46,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843960858] [2022-01-18 05:13:46,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:46,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:46,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:46,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:46,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:46,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843960858] [2022-01-18 05:13:46,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843960858] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:13:46,127 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:13:46,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:13:46,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638238538] [2022-01-18 05:13:46,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:13:46,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:13:46,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:46,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:13:46,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:13:46,128 INFO L87 Difference]: Start difference. First operand 236 states and 715 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:46,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:46,205 INFO L93 Difference]: Finished difference Result 452 states and 1270 transitions. [2022-01-18 05:13:46,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:46,205 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:46,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:46,205 INFO L225 Difference]: With dead ends: 452 [2022-01-18 05:13:46,206 INFO L226 Difference]: Without dead ends: 446 [2022-01-18 05:13:46,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:13:46,206 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 77 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:46,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 56 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:46,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2022-01-18 05:13:46,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 246. [2022-01-18 05:13:46,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 245 states have (on average 3.020408163265306) internal successors, (740), 245 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:46,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 740 transitions. [2022-01-18 05:13:46,209 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 740 transitions. Word has length 19 [2022-01-18 05:13:46,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:46,209 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 740 transitions. [2022-01-18 05:13:46,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:46,209 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 740 transitions. [2022-01-18 05:13:46,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:46,209 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:46,210 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:46,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable321 [2022-01-18 05:13:46,210 INFO L402 AbstractCegarLoop]: === Iteration 323 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:46,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:46,210 INFO L85 PathProgramCache]: Analyzing trace with hash -169342994, now seen corresponding path program 57 times [2022-01-18 05:13:46,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:46,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439462593] [2022-01-18 05:13:46,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:46,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:46,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:46,244 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:46,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:46,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439462593] [2022-01-18 05:13:46,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439462593] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:13:46,245 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:13:46,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:13:46,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366343233] [2022-01-18 05:13:46,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:13:46,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:13:46,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:46,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:13:46,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:13:46,245 INFO L87 Difference]: Start difference. First operand 246 states and 740 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:46,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:46,328 INFO L93 Difference]: Finished difference Result 416 states and 1187 transitions. [2022-01-18 05:13:46,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:46,328 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:46,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:46,328 INFO L225 Difference]: With dead ends: 416 [2022-01-18 05:13:46,328 INFO L226 Difference]: Without dead ends: 405 [2022-01-18 05:13:46,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:13:46,329 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 56 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:46,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 69 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:46,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2022-01-18 05:13:46,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 236. [2022-01-18 05:13:46,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 235 states have (on average 3.0382978723404257) internal successors, (714), 235 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:46,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 714 transitions. [2022-01-18 05:13:46,332 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 714 transitions. Word has length 19 [2022-01-18 05:13:46,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:46,332 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 714 transitions. [2022-01-18 05:13:46,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:46,332 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 714 transitions. [2022-01-18 05:13:46,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:46,332 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:46,332 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:46,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable322 [2022-01-18 05:13:46,332 INFO L402 AbstractCegarLoop]: === Iteration 324 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:46,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:46,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1245100038, now seen corresponding path program 56 times [2022-01-18 05:13:46,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:46,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801758403] [2022-01-18 05:13:46,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:46,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:46,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:46,365 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:46,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:46,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801758403] [2022-01-18 05:13:46,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801758403] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:13:46,366 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:13:46,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:13:46,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637857396] [2022-01-18 05:13:46,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:13:46,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:13:46,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:46,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:13:46,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:13:46,366 INFO L87 Difference]: Start difference. First operand 236 states and 714 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:46,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:46,476 INFO L93 Difference]: Finished difference Result 388 states and 1108 transitions. [2022-01-18 05:13:46,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:46,476 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:46,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:46,476 INFO L225 Difference]: With dead ends: 388 [2022-01-18 05:13:46,476 INFO L226 Difference]: Without dead ends: 382 [2022-01-18 05:13:46,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:46,477 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 72 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:46,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 68 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:46,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-01-18 05:13:46,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 248. [2022-01-18 05:13:46,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 247 states have (on average 3.0404858299595143) internal successors, (751), 247 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:46,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 751 transitions. [2022-01-18 05:13:46,480 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 751 transitions. Word has length 19 [2022-01-18 05:13:46,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:46,480 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 751 transitions. [2022-01-18 05:13:46,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:46,480 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 751 transitions. [2022-01-18 05:13:46,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:46,480 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:46,480 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:46,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable323 [2022-01-18 05:13:46,480 INFO L402 AbstractCegarLoop]: === Iteration 325 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:46,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:46,480 INFO L85 PathProgramCache]: Analyzing trace with hash -916770614, now seen corresponding path program 57 times [2022-01-18 05:13:46,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:46,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735936038] [2022-01-18 05:13:46,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:46,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:46,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:46,518 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:46,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:46,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735936038] [2022-01-18 05:13:46,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735936038] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:13:46,518 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:13:46,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:13:46,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001813599] [2022-01-18 05:13:46,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:13:46,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:13:46,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:46,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:13:46,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:13:46,519 INFO L87 Difference]: Start difference. First operand 248 states and 751 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:46,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:46,633 INFO L93 Difference]: Finished difference Result 366 states and 1071 transitions. [2022-01-18 05:13:46,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:46,634 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:46,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:46,634 INFO L225 Difference]: With dead ends: 366 [2022-01-18 05:13:46,634 INFO L226 Difference]: Without dead ends: 366 [2022-01-18 05:13:46,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:46,634 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 53 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:46,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 70 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:46,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2022-01-18 05:13:46,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 235. [2022-01-18 05:13:46,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 234 states have (on average 3.0384615384615383) internal successors, (711), 234 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:46,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 711 transitions. [2022-01-18 05:13:46,637 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 711 transitions. Word has length 19 [2022-01-18 05:13:46,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:46,637 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 711 transitions. [2022-01-18 05:13:46,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:46,638 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 711 transitions. [2022-01-18 05:13:46,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:46,638 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:46,638 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:46,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable324 [2022-01-18 05:13:46,638 INFO L402 AbstractCegarLoop]: === Iteration 326 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:46,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:46,638 INFO L85 PathProgramCache]: Analyzing trace with hash 2041919526, now seen corresponding path program 58 times [2022-01-18 05:13:46,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:46,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384007585] [2022-01-18 05:13:46,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:46,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:46,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:46,666 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:46,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:46,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384007585] [2022-01-18 05:13:46,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384007585] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:13:46,666 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:13:46,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:13:46,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71303713] [2022-01-18 05:13:46,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:13:46,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:13:46,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:46,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:13:46,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:13:46,666 INFO L87 Difference]: Start difference. First operand 235 states and 711 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:46,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:46,741 INFO L93 Difference]: Finished difference Result 391 states and 1119 transitions. [2022-01-18 05:13:46,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:46,741 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:46,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:46,742 INFO L225 Difference]: With dead ends: 391 [2022-01-18 05:13:46,742 INFO L226 Difference]: Without dead ends: 379 [2022-01-18 05:13:46,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:13:46,742 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 60 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:46,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 54 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:46,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2022-01-18 05:13:46,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 237. [2022-01-18 05:13:46,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 236 states have (on average 3.0254237288135593) internal successors, (714), 236 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:46,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 714 transitions. [2022-01-18 05:13:46,745 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 714 transitions. Word has length 19 [2022-01-18 05:13:46,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:46,745 INFO L470 AbstractCegarLoop]: Abstraction has 237 states and 714 transitions. [2022-01-18 05:13:46,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:46,745 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 714 transitions. [2022-01-18 05:13:46,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:46,745 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:46,745 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:46,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable325 [2022-01-18 05:13:46,745 INFO L402 AbstractCegarLoop]: === Iteration 327 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:46,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:46,746 INFO L85 PathProgramCache]: Analyzing trace with hash -321878382, now seen corresponding path program 59 times [2022-01-18 05:13:46,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:46,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063635518] [2022-01-18 05:13:46,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:46,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:46,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:46,777 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:46,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:46,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063635518] [2022-01-18 05:13:46,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063635518] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:13:46,777 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:13:46,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:13:46,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788272834] [2022-01-18 05:13:46,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:13:46,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:13:46,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:46,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:13:46,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:13:46,778 INFO L87 Difference]: Start difference. First operand 237 states and 714 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:46,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:46,865 INFO L93 Difference]: Finished difference Result 379 states and 1081 transitions. [2022-01-18 05:13:46,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:46,865 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:46,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:46,865 INFO L225 Difference]: With dead ends: 379 [2022-01-18 05:13:46,866 INFO L226 Difference]: Without dead ends: 373 [2022-01-18 05:13:46,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:13:46,866 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 55 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:46,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 68 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:46,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2022-01-18 05:13:46,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 247. [2022-01-18 05:13:46,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 246 states have (on average 3.0040650406504064) internal successors, (739), 246 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:46,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 739 transitions. [2022-01-18 05:13:46,869 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 739 transitions. Word has length 19 [2022-01-18 05:13:46,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:46,869 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 739 transitions. [2022-01-18 05:13:46,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:46,869 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 739 transitions. [2022-01-18 05:13:46,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:46,869 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:46,869 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:46,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable326 [2022-01-18 05:13:46,869 INFO L402 AbstractCegarLoop]: === Iteration 328 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:46,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:46,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1654432320, now seen corresponding path program 60 times [2022-01-18 05:13:46,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:46,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653388898] [2022-01-18 05:13:46,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:46,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:46,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:46,900 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:46,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:46,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653388898] [2022-01-18 05:13:46,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653388898] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:13:46,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:13:46,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:13:46,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426931334] [2022-01-18 05:13:46,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:13:46,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:13:46,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:46,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:13:46,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:13:46,901 INFO L87 Difference]: Start difference. First operand 247 states and 739 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:46,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:46,969 INFO L93 Difference]: Finished difference Result 343 states and 998 transitions. [2022-01-18 05:13:46,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:46,969 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:46,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:46,970 INFO L225 Difference]: With dead ends: 343 [2022-01-18 05:13:46,970 INFO L226 Difference]: Without dead ends: 330 [2022-01-18 05:13:46,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:13:46,970 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 45 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:46,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 50 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 05:13:46,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2022-01-18 05:13:46,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 235. [2022-01-18 05:13:46,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 234 states have (on average 3.034188034188034) internal successors, (710), 234 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:46,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 710 transitions. [2022-01-18 05:13:46,973 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 710 transitions. Word has length 19 [2022-01-18 05:13:46,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:46,973 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 710 transitions. [2022-01-18 05:13:46,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:46,973 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 710 transitions. [2022-01-18 05:13:46,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:46,973 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:46,973 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:46,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable327 [2022-01-18 05:13:46,974 INFO L402 AbstractCegarLoop]: === Iteration 329 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:46,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:46,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1937953670, now seen corresponding path program 58 times [2022-01-18 05:13:46,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:46,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696334739] [2022-01-18 05:13:46,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:46,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:46,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:47,002 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:47,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:47,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696334739] [2022-01-18 05:13:47,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696334739] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:13:47,003 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:13:47,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:13:47,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759258182] [2022-01-18 05:13:47,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:13:47,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:13:47,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:47,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:13:47,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:13:47,003 INFO L87 Difference]: Start difference. First operand 235 states and 710 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:47,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:47,110 INFO L93 Difference]: Finished difference Result 325 states and 939 transitions. [2022-01-18 05:13:47,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:47,110 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:47,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:47,111 INFO L225 Difference]: With dead ends: 325 [2022-01-18 05:13:47,111 INFO L226 Difference]: Without dead ends: 313 [2022-01-18 05:13:47,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:47,111 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 59 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:47,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 59 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:47,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-01-18 05:13:47,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 235. [2022-01-18 05:13:47,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 234 states have (on average 3.02991452991453) internal successors, (709), 234 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:47,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 709 transitions. [2022-01-18 05:13:47,114 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 709 transitions. Word has length 19 [2022-01-18 05:13:47,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:47,114 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 709 transitions. [2022-01-18 05:13:47,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:47,114 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 709 transitions. [2022-01-18 05:13:47,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:47,114 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:47,114 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:47,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable328 [2022-01-18 05:13:47,114 INFO L402 AbstractCegarLoop]: === Iteration 330 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:47,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:47,115 INFO L85 PathProgramCache]: Analyzing trace with hash -452144906, now seen corresponding path program 59 times [2022-01-18 05:13:47,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:47,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160223956] [2022-01-18 05:13:47,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:47,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:47,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:47,148 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:47,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:47,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160223956] [2022-01-18 05:13:47,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160223956] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:13:47,148 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:13:47,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:13:47,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486240972] [2022-01-18 05:13:47,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:13:47,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:13:47,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:47,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:13:47,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:13:47,149 INFO L87 Difference]: Start difference. First operand 235 states and 709 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:47,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:47,258 INFO L93 Difference]: Finished difference Result 329 states and 951 transitions. [2022-01-18 05:13:47,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:47,258 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:47,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:47,258 INFO L225 Difference]: With dead ends: 329 [2022-01-18 05:13:47,259 INFO L226 Difference]: Without dead ends: 323 [2022-01-18 05:13:47,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:47,259 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 65 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:47,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 58 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:47,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2022-01-18 05:13:47,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 241. [2022-01-18 05:13:47,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 240 states have (on average 3.0125) internal successors, (723), 240 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:47,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 723 transitions. [2022-01-18 05:13:47,261 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 723 transitions. Word has length 19 [2022-01-18 05:13:47,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:47,262 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 723 transitions. [2022-01-18 05:13:47,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:47,262 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 723 transitions. [2022-01-18 05:13:47,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:47,262 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:47,262 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:47,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable329 [2022-01-18 05:13:47,262 INFO L402 AbstractCegarLoop]: === Iteration 331 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:47,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:47,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1680951738, now seen corresponding path program 60 times [2022-01-18 05:13:47,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:47,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641466336] [2022-01-18 05:13:47,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:47,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:47,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:47,299 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:47,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:47,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641466336] [2022-01-18 05:13:47,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641466336] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:13:47,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:13:47,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:13:47,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144045546] [2022-01-18 05:13:47,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:13:47,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:13:47,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:47,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:13:47,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:13:47,300 INFO L87 Difference]: Start difference. First operand 241 states and 723 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:47,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:47,410 INFO L93 Difference]: Finished difference Result 294 states and 876 transitions. [2022-01-18 05:13:47,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:47,410 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:47,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:47,411 INFO L225 Difference]: With dead ends: 294 [2022-01-18 05:13:47,411 INFO L226 Difference]: Without dead ends: 294 [2022-01-18 05:13:47,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:47,411 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 44 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:47,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 55 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:47,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2022-01-18 05:13:47,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 217. [2022-01-18 05:13:47,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 3.009259259259259) internal successors, (650), 216 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:47,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 650 transitions. [2022-01-18 05:13:47,413 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 650 transitions. Word has length 19 [2022-01-18 05:13:47,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:47,413 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 650 transitions. [2022-01-18 05:13:47,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:47,414 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 650 transitions. [2022-01-18 05:13:47,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:47,414 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:47,414 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:47,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable330 [2022-01-18 05:13:47,414 INFO L402 AbstractCegarLoop]: === Iteration 332 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:47,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:47,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1307364804, now seen corresponding path program 61 times [2022-01-18 05:13:47,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:47,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48077633] [2022-01-18 05:13:47,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:47,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:47,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:47,443 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:47,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:47,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48077633] [2022-01-18 05:13:47,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48077633] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:47,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514435632] [2022-01-18 05:13:47,443 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 05:13:47,443 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:47,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:47,444 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) [2022-01-18 05:13:47,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (172)] Waiting until timeout for monitored process [2022-01-18 05:13:47,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:47,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:47,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:47,512 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:47,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:47,554 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:47,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514435632] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:47,554 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:47,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8 [2022-01-18 05:13:47,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125747905] [2022-01-18 05:13:47,554 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:47,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:13:47,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:47,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:13:47,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:13:47,555 INFO L87 Difference]: Start difference. First operand 217 states and 650 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:47,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:47,661 INFO L93 Difference]: Finished difference Result 392 states and 1146 transitions. [2022-01-18 05:13:47,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:47,661 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:47,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:47,662 INFO L225 Difference]: With dead ends: 392 [2022-01-18 05:13:47,662 INFO L226 Difference]: Without dead ends: 392 [2022-01-18 05:13:47,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-18 05:13:47,662 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 59 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:47,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 82 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:47,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2022-01-18 05:13:47,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 220. [2022-01-18 05:13:47,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 3.009132420091324) internal successors, (659), 219 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:47,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 659 transitions. [2022-01-18 05:13:47,665 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 659 transitions. Word has length 19 [2022-01-18 05:13:47,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:47,665 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 659 transitions. [2022-01-18 05:13:47,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:47,665 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 659 transitions. [2022-01-18 05:13:47,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:47,665 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:47,665 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:47,681 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (172)] Ended with exit code 0 [2022-01-18 05:13:47,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 172 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable331 [2022-01-18 05:13:47,866 INFO L402 AbstractCegarLoop]: === Iteration 333 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:47,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:47,866 INFO L85 PathProgramCache]: Analyzing trace with hash -936272864, now seen corresponding path program 62 times [2022-01-18 05:13:47,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:47,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994593266] [2022-01-18 05:13:47,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:47,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:47,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:47,897 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:47,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:47,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994593266] [2022-01-18 05:13:47,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994593266] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:47,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391356444] [2022-01-18 05:13:47,898 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 05:13:47,898 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:47,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:47,898 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) [2022-01-18 05:13:47,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (173)] Waiting until timeout for monitored process [2022-01-18 05:13:47,921 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:13:47,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:47,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:47,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:47,985 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:47,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:48,035 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:48,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391356444] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:48,035 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:48,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-01-18 05:13:48,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017509423] [2022-01-18 05:13:48,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:48,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 05:13:48,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:48,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 05:13:48,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-18 05:13:48,036 INFO L87 Difference]: Start difference. First operand 220 states and 659 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:48,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:48,140 INFO L93 Difference]: Finished difference Result 455 states and 1314 transitions. [2022-01-18 05:13:48,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:48,140 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:48,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:48,141 INFO L225 Difference]: With dead ends: 455 [2022-01-18 05:13:48,141 INFO L226 Difference]: Without dead ends: 455 [2022-01-18 05:13:48,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2022-01-18 05:13:48,141 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 86 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:48,141 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 75 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:48,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2022-01-18 05:13:48,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 223. [2022-01-18 05:13:48,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 222 states have (on average 3.0225225225225225) internal successors, (671), 222 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:48,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 671 transitions. [2022-01-18 05:13:48,144 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 671 transitions. Word has length 19 [2022-01-18 05:13:48,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:48,144 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 671 transitions. [2022-01-18 05:13:48,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:48,145 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 671 transitions. [2022-01-18 05:13:48,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:48,145 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:48,145 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:48,160 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (173)] Forceful destruction successful, exit code 0 [2022-01-18 05:13:48,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable332,173 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:48,345 INFO L402 AbstractCegarLoop]: === Iteration 334 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:48,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:48,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1097492804, now seen corresponding path program 63 times [2022-01-18 05:13:48,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:48,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358608353] [2022-01-18 05:13:48,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:48,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:48,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:48,372 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:48,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:48,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358608353] [2022-01-18 05:13:48,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358608353] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:48,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688123213] [2022-01-18 05:13:48,373 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:13:48,373 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:48,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:48,373 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) [2022-01-18 05:13:48,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (174)] Waiting until timeout for monitored process [2022-01-18 05:13:48,396 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 05:13:48,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:48,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:48,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:48,449 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:48,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:48,494 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:48,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688123213] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:48,495 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:48,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-01-18 05:13:48,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139588473] [2022-01-18 05:13:48,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:48,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 05:13:48,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:48,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 05:13:48,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-01-18 05:13:48,495 INFO L87 Difference]: Start difference. First operand 223 states and 671 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:48,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:48,600 INFO L93 Difference]: Finished difference Result 401 states and 1167 transitions. [2022-01-18 05:13:48,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:48,600 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:48,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:48,601 INFO L225 Difference]: With dead ends: 401 [2022-01-18 05:13:48,601 INFO L226 Difference]: Without dead ends: 395 [2022-01-18 05:13:48,601 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-01-18 05:13:48,601 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 61 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:48,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 66 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:48,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2022-01-18 05:13:48,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 217. [2022-01-18 05:13:48,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 3.009259259259259) internal successors, (650), 216 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:48,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 650 transitions. [2022-01-18 05:13:48,604 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 650 transitions. Word has length 19 [2022-01-18 05:13:48,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:48,604 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 650 transitions. [2022-01-18 05:13:48,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:48,604 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 650 transitions. [2022-01-18 05:13:48,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:48,605 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:48,605 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:48,620 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (174)] Ended with exit code 0 [2022-01-18 05:13:48,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 174 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable333 [2022-01-18 05:13:48,805 INFO L402 AbstractCegarLoop]: === Iteration 335 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:48,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:48,805 INFO L85 PathProgramCache]: Analyzing trace with hash 103962934, now seen corresponding path program 64 times [2022-01-18 05:13:48,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:48,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238022472] [2022-01-18 05:13:48,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:48,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:48,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:48,840 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:48,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:48,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238022472] [2022-01-18 05:13:48,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238022472] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:48,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779710876] [2022-01-18 05:13:48,841 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 05:13:48,841 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:48,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:48,842 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) [2022-01-18 05:13:48,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (175)] Waiting until timeout for monitored process [2022-01-18 05:13:48,867 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 05:13:48,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:48,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:48,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:48,946 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:48,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:49,000 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:49,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779710876] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:49,000 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:49,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-01-18 05:13:49,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060222902] [2022-01-18 05:13:49,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:49,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 05:13:49,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:49,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 05:13:49,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:13:49,001 INFO L87 Difference]: Start difference. First operand 217 states and 650 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:49,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:49,122 INFO L93 Difference]: Finished difference Result 425 states and 1224 transitions. [2022-01-18 05:13:49,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:49,122 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:49,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:49,123 INFO L225 Difference]: With dead ends: 425 [2022-01-18 05:13:49,123 INFO L226 Difference]: Without dead ends: 425 [2022-01-18 05:13:49,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-01-18 05:13:49,123 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 81 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:49,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 98 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:49,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2022-01-18 05:13:49,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 223. [2022-01-18 05:13:49,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 222 states have (on average 3.036036036036036) internal successors, (674), 222 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:49,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 674 transitions. [2022-01-18 05:13:49,126 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 674 transitions. Word has length 19 [2022-01-18 05:13:49,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:49,126 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 674 transitions. [2022-01-18 05:13:49,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:49,126 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 674 transitions. [2022-01-18 05:13:49,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:49,126 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:49,126 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:49,142 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (175)] Forceful destruction successful, exit code 0 [2022-01-18 05:13:49,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 175 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable334 [2022-01-18 05:13:49,327 INFO L402 AbstractCegarLoop]: === Iteration 336 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:49,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:49,327 INFO L85 PathProgramCache]: Analyzing trace with hash -57257006, now seen corresponding path program 65 times [2022-01-18 05:13:49,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:49,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872703390] [2022-01-18 05:13:49,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:49,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:49,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:49,356 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:49,356 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:49,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872703390] [2022-01-18 05:13:49,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872703390] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:49,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804992414] [2022-01-18 05:13:49,357 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 05:13:49,357 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:49,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:49,357 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) [2022-01-18 05:13:49,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (176)] Waiting until timeout for monitored process [2022-01-18 05:13:49,380 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:13:49,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:49,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:49,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:49,436 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:49,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:49,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:49,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804992414] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:49,480 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:49,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-01-18 05:13:49,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227583672] [2022-01-18 05:13:49,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:49,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 05:13:49,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:49,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 05:13:49,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:13:49,480 INFO L87 Difference]: Start difference. First operand 223 states and 674 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:49,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:49,586 INFO L93 Difference]: Finished difference Result 431 states and 1233 transitions. [2022-01-18 05:13:49,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:49,586 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:49,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:49,587 INFO L225 Difference]: With dead ends: 431 [2022-01-18 05:13:49,587 INFO L226 Difference]: Without dead ends: 425 [2022-01-18 05:13:49,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2022-01-18 05:13:49,587 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 98 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:49,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 81 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:49,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2022-01-18 05:13:49,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 220. [2022-01-18 05:13:49,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 3.0228310502283104) internal successors, (662), 219 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:49,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 662 transitions. [2022-01-18 05:13:49,591 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 662 transitions. Word has length 19 [2022-01-18 05:13:49,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:49,591 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 662 transitions. [2022-01-18 05:13:49,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:49,591 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 662 transitions. [2022-01-18 05:13:49,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:49,591 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:49,591 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:49,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (176)] Forceful destruction successful, exit code 0 [2022-01-18 05:13:49,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 176 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable335 [2022-01-18 05:13:49,792 INFO L402 AbstractCegarLoop]: === Iteration 337 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:49,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:49,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1624579904, now seen corresponding path program 66 times [2022-01-18 05:13:49,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:49,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742573580] [2022-01-18 05:13:49,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:49,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:49,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:49,816 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:49,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:49,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742573580] [2022-01-18 05:13:49,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742573580] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:49,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163732531] [2022-01-18 05:13:49,817 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 05:13:49,817 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:49,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:49,817 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) [2022-01-18 05:13:49,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (177)] Waiting until timeout for monitored process [2022-01-18 05:13:49,839 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 05:13:49,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:49,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:49,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:49,882 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:49,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:49,916 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:49,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163732531] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:49,916 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:49,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-01-18 05:13:49,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619849374] [2022-01-18 05:13:49,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:49,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 05:13:49,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:49,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 05:13:49,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-01-18 05:13:49,917 INFO L87 Difference]: Start difference. First operand 220 states and 662 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:50,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:50,006 INFO L93 Difference]: Finished difference Result 380 states and 1101 transitions. [2022-01-18 05:13:50,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:50,006 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:50,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:50,007 INFO L225 Difference]: With dead ends: 380 [2022-01-18 05:13:50,007 INFO L226 Difference]: Without dead ends: 368 [2022-01-18 05:13:50,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-01-18 05:13:50,007 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 78 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:50,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 69 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:50,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2022-01-18 05:13:50,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 215. [2022-01-18 05:13:50,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 3.014018691588785) internal successors, (645), 214 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:50,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 645 transitions. [2022-01-18 05:13:50,010 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 645 transitions. Word has length 19 [2022-01-18 05:13:50,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:50,010 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 645 transitions. [2022-01-18 05:13:50,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:50,010 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 645 transitions. [2022-01-18 05:13:50,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:50,010 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:50,010 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:50,026 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (177)] Ended with exit code 0 [2022-01-18 05:13:50,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable336,177 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:50,211 INFO L402 AbstractCegarLoop]: === Iteration 338 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:50,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:50,211 INFO L85 PathProgramCache]: Analyzing trace with hash 537779126, now seen corresponding path program 61 times [2022-01-18 05:13:50,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:50,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773207909] [2022-01-18 05:13:50,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:50,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:50,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:50,246 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:50,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:50,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773207909] [2022-01-18 05:13:50,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773207909] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:13:50,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:13:50,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:13:50,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006140811] [2022-01-18 05:13:50,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:13:50,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:13:50,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:50,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:13:50,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:13:50,247 INFO L87 Difference]: Start difference. First operand 215 states and 645 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:50,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:50,325 INFO L93 Difference]: Finished difference Result 362 states and 1019 transitions. [2022-01-18 05:13:50,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:50,325 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:50,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:50,326 INFO L225 Difference]: With dead ends: 362 [2022-01-18 05:13:50,326 INFO L226 Difference]: Without dead ends: 346 [2022-01-18 05:13:50,326 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:50,326 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 64 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:50,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 53 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:50,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2022-01-18 05:13:50,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 219. [2022-01-18 05:13:50,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 2.9954128440366974) internal successors, (653), 218 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:50,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 653 transitions. [2022-01-18 05:13:50,329 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 653 transitions. Word has length 19 [2022-01-18 05:13:50,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:50,329 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 653 transitions. [2022-01-18 05:13:50,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:50,329 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 653 transitions. [2022-01-18 05:13:50,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:50,329 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:50,329 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:50,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable337 [2022-01-18 05:13:50,330 INFO L402 AbstractCegarLoop]: === Iteration 339 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:50,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:50,330 INFO L85 PathProgramCache]: Analyzing trace with hash -843272622, now seen corresponding path program 62 times [2022-01-18 05:13:50,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:50,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506917083] [2022-01-18 05:13:50,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:50,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:50,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:50,360 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:50,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:50,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506917083] [2022-01-18 05:13:50,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506917083] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:13:50,360 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:13:50,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:13:50,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836406805] [2022-01-18 05:13:50,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:13:50,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:13:50,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:50,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:13:50,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:13:50,360 INFO L87 Difference]: Start difference. First operand 219 states and 653 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:50,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:50,457 INFO L93 Difference]: Finished difference Result 391 states and 1075 transitions. [2022-01-18 05:13:50,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:50,457 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:50,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:50,458 INFO L225 Difference]: With dead ends: 391 [2022-01-18 05:13:50,458 INFO L226 Difference]: Without dead ends: 383 [2022-01-18 05:13:50,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:50,458 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 76 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:50,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 63 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:50,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2022-01-18 05:13:50,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 231. [2022-01-18 05:13:50,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 2.9695652173913043) internal successors, (683), 230 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:50,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 683 transitions. [2022-01-18 05:13:50,461 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 683 transitions. Word has length 19 [2022-01-18 05:13:50,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:50,461 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 683 transitions. [2022-01-18 05:13:50,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:50,461 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 683 transitions. [2022-01-18 05:13:50,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:50,462 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:50,462 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:50,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable338 [2022-01-18 05:13:50,462 INFO L402 AbstractCegarLoop]: === Iteration 340 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:50,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:50,462 INFO L85 PathProgramCache]: Analyzing trace with hash 64388790, now seen corresponding path program 63 times [2022-01-18 05:13:50,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:50,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170185607] [2022-01-18 05:13:50,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:50,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:50,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:50,492 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:50,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:50,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170185607] [2022-01-18 05:13:50,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170185607] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:13:50,492 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:13:50,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:13:50,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664316077] [2022-01-18 05:13:50,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:13:50,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:13:50,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:50,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:13:50,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:13:50,493 INFO L87 Difference]: Start difference. First operand 231 states and 683 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:50,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:50,584 INFO L93 Difference]: Finished difference Result 354 states and 997 transitions. [2022-01-18 05:13:50,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:50,584 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:50,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:50,585 INFO L225 Difference]: With dead ends: 354 [2022-01-18 05:13:50,585 INFO L226 Difference]: Without dead ends: 344 [2022-01-18 05:13:50,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:50,585 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 51 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:50,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 62 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:50,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2022-01-18 05:13:50,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 217. [2022-01-18 05:13:50,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 3.0) internal successors, (648), 216 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:50,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 648 transitions. [2022-01-18 05:13:50,588 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 648 transitions. Word has length 19 [2022-01-18 05:13:50,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:50,588 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 648 transitions. [2022-01-18 05:13:50,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:50,588 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 648 transitions. [2022-01-18 05:13:50,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:50,588 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:50,588 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:50,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable339 [2022-01-18 05:13:50,588 INFO L402 AbstractCegarLoop]: === Iteration 341 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:50,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:50,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1339266044, now seen corresponding path program 64 times [2022-01-18 05:13:50,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:50,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143246609] [2022-01-18 05:13:50,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:50,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:50,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:50,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:50,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:50,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143246609] [2022-01-18 05:13:50,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143246609] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:13:50,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:13:50,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:13:50,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661121727] [2022-01-18 05:13:50,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:13:50,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:13:50,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:50,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:13:50,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:13:50,635 INFO L87 Difference]: Start difference. First operand 217 states and 648 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:50,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:50,732 INFO L93 Difference]: Finished difference Result 397 states and 1090 transitions. [2022-01-18 05:13:50,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:50,732 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:50,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:50,733 INFO L225 Difference]: With dead ends: 397 [2022-01-18 05:13:50,733 INFO L226 Difference]: Without dead ends: 389 [2022-01-18 05:13:50,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:50,733 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 77 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:50,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 53 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:50,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2022-01-18 05:13:50,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 233. [2022-01-18 05:13:50,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 232 states have (on average 2.9741379310344827) internal successors, (690), 232 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:50,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 690 transitions. [2022-01-18 05:13:50,736 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 690 transitions. Word has length 19 [2022-01-18 05:13:50,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:50,736 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 690 transitions. [2022-01-18 05:13:50,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:50,737 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 690 transitions. [2022-01-18 05:13:50,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:50,737 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:50,737 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:50,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable340 [2022-01-18 05:13:50,737 INFO L402 AbstractCegarLoop]: === Iteration 342 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:50,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:50,737 INFO L85 PathProgramCache]: Analyzing trace with hash -2048039840, now seen corresponding path program 65 times [2022-01-18 05:13:50,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:50,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756270958] [2022-01-18 05:13:50,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:50,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:50,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:50,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:50,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:50,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756270958] [2022-01-18 05:13:50,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756270958] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:13:50,780 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:13:50,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:13:50,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499403069] [2022-01-18 05:13:50,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:13:50,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:13:50,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:50,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:13:50,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:13:50,781 INFO L87 Difference]: Start difference. First operand 233 states and 690 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:50,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:50,869 INFO L93 Difference]: Finished difference Result 395 states and 1085 transitions. [2022-01-18 05:13:50,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:50,869 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:50,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:50,870 INFO L225 Difference]: With dead ends: 395 [2022-01-18 05:13:50,870 INFO L226 Difference]: Without dead ends: 387 [2022-01-18 05:13:50,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:50,870 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 76 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:50,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 56 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:50,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2022-01-18 05:13:50,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 231. [2022-01-18 05:13:50,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 2.9695652173913043) internal successors, (683), 230 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:50,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 683 transitions. [2022-01-18 05:13:50,873 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 683 transitions. Word has length 19 [2022-01-18 05:13:50,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:50,873 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 683 transitions. [2022-01-18 05:13:50,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:50,873 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 683 transitions. [2022-01-18 05:13:50,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:50,874 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:50,874 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:50,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable341 [2022-01-18 05:13:50,874 INFO L402 AbstractCegarLoop]: === Iteration 343 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:50,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:50,874 INFO L85 PathProgramCache]: Analyzing trace with hash 475330896, now seen corresponding path program 66 times [2022-01-18 05:13:50,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:50,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858169255] [2022-01-18 05:13:50,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:50,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:50,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:50,901 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:50,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:50,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858169255] [2022-01-18 05:13:50,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858169255] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:13:50,901 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:13:50,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:13:50,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016629930] [2022-01-18 05:13:50,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:13:50,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:13:50,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:50,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:13:50,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:13:50,902 INFO L87 Difference]: Start difference. First operand 231 states and 683 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:50,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:50,984 INFO L93 Difference]: Finished difference Result 358 states and 1005 transitions. [2022-01-18 05:13:50,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:50,984 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:50,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:50,985 INFO L225 Difference]: With dead ends: 358 [2022-01-18 05:13:50,985 INFO L226 Difference]: Without dead ends: 342 [2022-01-18 05:13:50,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:50,985 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 51 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:50,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 68 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:50,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2022-01-18 05:13:50,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 215. [2022-01-18 05:13:50,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 3.0093457943925235) internal successors, (644), 214 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:50,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 644 transitions. [2022-01-18 05:13:50,988 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 644 transitions. Word has length 19 [2022-01-18 05:13:50,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:50,988 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 644 transitions. [2022-01-18 05:13:50,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:50,988 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 644 transitions. [2022-01-18 05:13:50,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:50,988 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:50,988 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:50,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable342 [2022-01-18 05:13:50,988 INFO L402 AbstractCegarLoop]: === Iteration 344 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:50,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:50,988 INFO L85 PathProgramCache]: Analyzing trace with hash -879454808, now seen corresponding path program 67 times [2022-01-18 05:13:50,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:50,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135285613] [2022-01-18 05:13:50,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:50,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:50,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:51,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:51,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:51,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135285613] [2022-01-18 05:13:51,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135285613] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:51,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048690692] [2022-01-18 05:13:51,023 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 05:13:51,023 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:51,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:51,024 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) [2022-01-18 05:13:51,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (178)] Waiting until timeout for monitored process [2022-01-18 05:13:51,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:51,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:51,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:51,099 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:51,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:51,148 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:51,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048690692] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:51,148 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:51,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8 [2022-01-18 05:13:51,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912650693] [2022-01-18 05:13:51,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:51,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:13:51,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:51,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:13:51,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:13:51,148 INFO L87 Difference]: Start difference. First operand 215 states and 644 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:51,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:51,236 INFO L93 Difference]: Finished difference Result 500 states and 1471 transitions. [2022-01-18 05:13:51,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:51,236 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:51,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:51,237 INFO L225 Difference]: With dead ends: 500 [2022-01-18 05:13:51,237 INFO L226 Difference]: Without dead ends: 500 [2022-01-18 05:13:51,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:51,237 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 76 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:51,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 64 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:51,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2022-01-18 05:13:51,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 215. [2022-01-18 05:13:51,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 3.0093457943925235) internal successors, (644), 214 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:51,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 644 transitions. [2022-01-18 05:13:51,240 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 644 transitions. Word has length 19 [2022-01-18 05:13:51,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:51,240 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 644 transitions. [2022-01-18 05:13:51,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:51,241 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 644 transitions. [2022-01-18 05:13:51,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:51,241 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:51,241 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:51,256 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (178)] Ended with exit code 0 [2022-01-18 05:13:51,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable343,178 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:51,441 INFO L402 AbstractCegarLoop]: === Iteration 345 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:51,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:51,442 INFO L85 PathProgramCache]: Analyzing trace with hash -508362868, now seen corresponding path program 68 times [2022-01-18 05:13:51,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:51,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876043176] [2022-01-18 05:13:51,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:51,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:51,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:51,476 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:51,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:51,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876043176] [2022-01-18 05:13:51,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876043176] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:51,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729617472] [2022-01-18 05:13:51,476 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 05:13:51,476 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:51,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:51,477 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) [2022-01-18 05:13:51,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (179)] Waiting until timeout for monitored process [2022-01-18 05:13:51,499 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:13:51,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:51,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:51,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:51,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:51,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:51,626 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:51,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729617472] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:51,626 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:51,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-01-18 05:13:51,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099850689] [2022-01-18 05:13:51,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:51,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 05:13:51,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:51,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 05:13:51,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-01-18 05:13:51,627 INFO L87 Difference]: Start difference. First operand 215 states and 644 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:51,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:51,731 INFO L93 Difference]: Finished difference Result 518 states and 1504 transitions. [2022-01-18 05:13:51,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:51,731 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:51,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:51,732 INFO L225 Difference]: With dead ends: 518 [2022-01-18 05:13:51,732 INFO L226 Difference]: Without dead ends: 518 [2022-01-18 05:13:51,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2022-01-18 05:13:51,732 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 71 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:51,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 84 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:51,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2022-01-18 05:13:51,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 221. [2022-01-18 05:13:51,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 3.05) internal successors, (671), 220 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:51,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 671 transitions. [2022-01-18 05:13:51,736 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 671 transitions. Word has length 19 [2022-01-18 05:13:51,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:51,736 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 671 transitions. [2022-01-18 05:13:51,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:51,736 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 671 transitions. [2022-01-18 05:13:51,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:51,736 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:51,736 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:51,752 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (179)] Ended with exit code 0 [2022-01-18 05:13:51,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 179 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable344 [2022-01-18 05:13:51,937 INFO L402 AbstractCegarLoop]: === Iteration 346 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:51,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:51,937 INFO L85 PathProgramCache]: Analyzing trace with hash -669582808, now seen corresponding path program 69 times [2022-01-18 05:13:51,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:51,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721682461] [2022-01-18 05:13:51,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:51,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:51,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:51,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:51,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:51,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721682461] [2022-01-18 05:13:51,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721682461] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:51,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391230492] [2022-01-18 05:13:51,966 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:13:51,967 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:51,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:51,967 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) [2022-01-18 05:13:51,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (180)] Waiting until timeout for monitored process [2022-01-18 05:13:51,990 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 05:13:51,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:51,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:51,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:52,052 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:52,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:52,116 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:52,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391230492] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:52,117 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:52,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-01-18 05:13:52,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862164046] [2022-01-18 05:13:52,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:52,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 05:13:52,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:52,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 05:13:52,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-01-18 05:13:52,117 INFO L87 Difference]: Start difference. First operand 221 states and 671 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:52,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:52,221 INFO L93 Difference]: Finished difference Result 464 states and 1351 transitions. [2022-01-18 05:13:52,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:52,222 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:52,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:52,228 INFO L225 Difference]: With dead ends: 464 [2022-01-18 05:13:52,228 INFO L226 Difference]: Without dead ends: 458 [2022-01-18 05:13:52,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2022-01-18 05:13:52,228 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 77 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:52,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 87 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:52,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2022-01-18 05:13:52,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 221. [2022-01-18 05:13:52,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 3.022727272727273) internal successors, (665), 220 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:52,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 665 transitions. [2022-01-18 05:13:52,231 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 665 transitions. Word has length 19 [2022-01-18 05:13:52,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:52,231 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 665 transitions. [2022-01-18 05:13:52,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:52,231 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 665 transitions. [2022-01-18 05:13:52,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:52,231 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:52,232 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:52,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (180)] Forceful destruction successful, exit code 0 [2022-01-18 05:13:52,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 180 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable345 [2022-01-18 05:13:52,447 INFO L402 AbstractCegarLoop]: === Iteration 347 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:52,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:52,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1824108238, now seen corresponding path program 67 times [2022-01-18 05:13:52,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:52,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427677923] [2022-01-18 05:13:52,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:52,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:52,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:52,476 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:52,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:52,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427677923] [2022-01-18 05:13:52,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427677923] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:13:52,476 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:13:52,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:13:52,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59467552] [2022-01-18 05:13:52,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:13:52,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:13:52,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:52,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:13:52,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:13:52,476 INFO L87 Difference]: Start difference. First operand 221 states and 665 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:52,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:52,561 INFO L93 Difference]: Finished difference Result 422 states and 1177 transitions. [2022-01-18 05:13:52,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:52,561 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:52,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:52,562 INFO L225 Difference]: With dead ends: 422 [2022-01-18 05:13:52,562 INFO L226 Difference]: Without dead ends: 406 [2022-01-18 05:13:52,562 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:13:52,562 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 59 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:52,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 70 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:52,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2022-01-18 05:13:52,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 225. [2022-01-18 05:13:52,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 224 states have (on average 3.0044642857142856) internal successors, (673), 224 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:52,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 673 transitions. [2022-01-18 05:13:52,565 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 673 transitions. Word has length 19 [2022-01-18 05:13:52,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:52,565 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 673 transitions. [2022-01-18 05:13:52,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:52,565 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 673 transitions. [2022-01-18 05:13:52,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:52,566 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:52,566 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:52,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable346 [2022-01-18 05:13:52,566 INFO L402 AbstractCegarLoop]: === Iteration 348 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:52,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:52,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1089807310, now seen corresponding path program 68 times [2022-01-18 05:13:52,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:52,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197409047] [2022-01-18 05:13:52,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:52,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:52,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:52,600 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:52,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:52,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197409047] [2022-01-18 05:13:52,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197409047] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:13:52,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:13:52,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:13:52,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065891240] [2022-01-18 05:13:52,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:13:52,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:13:52,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:52,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:13:52,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:13:52,601 INFO L87 Difference]: Start difference. First operand 225 states and 673 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:52,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:52,683 INFO L93 Difference]: Finished difference Result 451 states and 1231 transitions. [2022-01-18 05:13:52,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:52,683 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:52,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:52,684 INFO L225 Difference]: With dead ends: 451 [2022-01-18 05:13:52,684 INFO L226 Difference]: Without dead ends: 443 [2022-01-18 05:13:52,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:13:52,684 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 95 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:52,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 56 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:52,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2022-01-18 05:13:52,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 241. [2022-01-18 05:13:52,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 240 states have (on average 2.9875) internal successors, (717), 240 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:52,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 717 transitions. [2022-01-18 05:13:52,687 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 717 transitions. Word has length 19 [2022-01-18 05:13:52,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:52,687 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 717 transitions. [2022-01-18 05:13:52,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:52,687 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 717 transitions. [2022-01-18 05:13:52,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:52,688 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:52,688 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:52,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable347 [2022-01-18 05:13:52,688 INFO L402 AbstractCegarLoop]: === Iteration 349 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:52,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:52,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1997468722, now seen corresponding path program 69 times [2022-01-18 05:13:52,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:52,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732961182] [2022-01-18 05:13:52,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:52,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:52,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:52,718 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:52,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:52,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732961182] [2022-01-18 05:13:52,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732961182] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:13:52,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:13:52,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:13:52,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484189900] [2022-01-18 05:13:52,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:13:52,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:13:52,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:52,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:13:52,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:13:52,719 INFO L87 Difference]: Start difference. First operand 241 states and 717 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:52,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:52,793 INFO L93 Difference]: Finished difference Result 414 states and 1145 transitions. [2022-01-18 05:13:52,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:52,794 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:52,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:52,794 INFO L225 Difference]: With dead ends: 414 [2022-01-18 05:13:52,794 INFO L226 Difference]: Without dead ends: 404 [2022-01-18 05:13:52,795 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:13:52,795 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 75 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:52,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 55 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:52,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2022-01-18 05:13:52,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 227. [2022-01-18 05:13:52,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 226 states have (on average 3.0132743362831858) internal successors, (681), 226 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:52,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 681 transitions. [2022-01-18 05:13:52,798 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 681 transitions. Word has length 19 [2022-01-18 05:13:52,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:52,798 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 681 transitions. [2022-01-18 05:13:52,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:52,798 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 681 transitions. [2022-01-18 05:13:52,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:52,798 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:52,798 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:52,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable348 [2022-01-18 05:13:52,798 INFO L402 AbstractCegarLoop]: === Iteration 350 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:52,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:52,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1563535018, now seen corresponding path program 70 times [2022-01-18 05:13:52,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:52,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282044104] [2022-01-18 05:13:52,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:52,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:52,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:52,829 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:52,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:52,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282044104] [2022-01-18 05:13:52,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282044104] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:52,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849368877] [2022-01-18 05:13:52,829 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 05:13:52,829 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:52,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:52,830 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) [2022-01-18 05:13:52,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (181)] Waiting until timeout for monitored process [2022-01-18 05:13:52,852 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 05:13:52,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:52,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:52,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:52,903 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:52,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:52,951 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:52,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849368877] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:52,951 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:52,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8 [2022-01-18 05:13:52,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115891105] [2022-01-18 05:13:52,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:52,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:13:52,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:52,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:13:52,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:13:52,951 INFO L87 Difference]: Start difference. First operand 227 states and 681 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:53,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:53,034 INFO L93 Difference]: Finished difference Result 414 states and 1216 transitions. [2022-01-18 05:13:53,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:53,034 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:53,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:53,035 INFO L225 Difference]: With dead ends: 414 [2022-01-18 05:13:53,035 INFO L226 Difference]: Without dead ends: 414 [2022-01-18 05:13:53,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:53,035 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 63 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:53,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 62 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:53,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2022-01-18 05:13:53,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 210. [2022-01-18 05:13:53,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 209 states have (on average 2.9808612440191387) internal successors, (623), 209 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:53,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 623 transitions. [2022-01-18 05:13:53,038 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 623 transitions. Word has length 19 [2022-01-18 05:13:53,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:53,038 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 623 transitions. [2022-01-18 05:13:53,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:53,038 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 623 transitions. [2022-01-18 05:13:53,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:53,038 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:53,038 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:53,064 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (181)] Ended with exit code 0 [2022-01-18 05:13:53,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 181 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable349 [2022-01-18 05:13:53,239 INFO L402 AbstractCegarLoop]: === Iteration 351 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:53,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:53,239 INFO L85 PathProgramCache]: Analyzing trace with hash -617633546, now seen corresponding path program 70 times [2022-01-18 05:13:53,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:53,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182458139] [2022-01-18 05:13:53,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:53,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:53,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:53,274 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:53,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:53,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182458139] [2022-01-18 05:13:53,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182458139] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:53,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738532516] [2022-01-18 05:13:53,275 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 05:13:53,275 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:53,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:53,276 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) [2022-01-18 05:13:53,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (182)] Waiting until timeout for monitored process [2022-01-18 05:13:53,300 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 05:13:53,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:53,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:53,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:53,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:53,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:53,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:53,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738532516] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:53,433 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:53,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-01-18 05:13:53,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727709085] [2022-01-18 05:13:53,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:53,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 05:13:53,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:53,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 05:13:53,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:13:53,434 INFO L87 Difference]: Start difference. First operand 210 states and 623 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:53,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:53,521 INFO L93 Difference]: Finished difference Result 346 states and 975 transitions. [2022-01-18 05:13:53,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:53,522 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:53,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:53,522 INFO L225 Difference]: With dead ends: 346 [2022-01-18 05:13:53,522 INFO L226 Difference]: Without dead ends: 330 [2022-01-18 05:13:53,522 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-01-18 05:13:53,523 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 81 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:53,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 72 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:53,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2022-01-18 05:13:53,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 200. [2022-01-18 05:13:53,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 2.9849246231155777) internal successors, (594), 199 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:53,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 594 transitions. [2022-01-18 05:13:53,525 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 594 transitions. Word has length 19 [2022-01-18 05:13:53,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:53,525 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 594 transitions. [2022-01-18 05:13:53,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:53,525 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 594 transitions. [2022-01-18 05:13:53,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:53,526 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:53,526 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:53,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (182)] Forceful destruction successful, exit code 0 [2022-01-18 05:13:53,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 182 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable350 [2022-01-18 05:13:53,726 INFO L402 AbstractCegarLoop]: === Iteration 352 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:53,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:53,726 INFO L85 PathProgramCache]: Analyzing trace with hash -747576714, now seen corresponding path program 71 times [2022-01-18 05:13:53,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:53,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687053889] [2022-01-18 05:13:53,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:53,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:53,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:53,759 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:53,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:53,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687053889] [2022-01-18 05:13:53,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687053889] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:53,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37697326] [2022-01-18 05:13:53,759 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 05:13:53,759 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:53,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:53,760 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) [2022-01-18 05:13:53,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (183)] Waiting until timeout for monitored process [2022-01-18 05:13:53,782 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:13:53,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:53,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:53,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:53,846 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:53,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:53,901 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:53,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37697326] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:53,901 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:53,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-01-18 05:13:53,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912971250] [2022-01-18 05:13:53,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:53,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 05:13:53,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:53,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 05:13:53,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-18 05:13:53,902 INFO L87 Difference]: Start difference. First operand 200 states and 594 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:54,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:54,002 INFO L93 Difference]: Finished difference Result 381 states and 1109 transitions. [2022-01-18 05:13:54,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:54,002 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:54,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:54,003 INFO L225 Difference]: With dead ends: 381 [2022-01-18 05:13:54,003 INFO L226 Difference]: Without dead ends: 381 [2022-01-18 05:13:54,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-01-18 05:13:54,003 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 72 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:54,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 77 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:54,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2022-01-18 05:13:54,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 204. [2022-01-18 05:13:54,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 203 states have (on average 3.0246305418719213) internal successors, (614), 203 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:54,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 614 transitions. [2022-01-18 05:13:54,005 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 614 transitions. Word has length 19 [2022-01-18 05:13:54,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:54,006 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 614 transitions. [2022-01-18 05:13:54,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:54,006 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 614 transitions. [2022-01-18 05:13:54,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:54,006 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:54,006 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:54,021 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (183)] Ended with exit code 0 [2022-01-18 05:13:54,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable351,183 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:54,209 INFO L402 AbstractCegarLoop]: === Iteration 353 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:54,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:54,209 INFO L85 PathProgramCache]: Analyzing trace with hash -113228298, now seen corresponding path program 71 times [2022-01-18 05:13:54,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:54,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339899533] [2022-01-18 05:13:54,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:54,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:54,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:54,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:54,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:54,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339899533] [2022-01-18 05:13:54,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339899533] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:54,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374351090] [2022-01-18 05:13:54,243 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 05:13:54,243 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:54,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:54,244 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) [2022-01-18 05:13:54,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (184)] Waiting until timeout for monitored process [2022-01-18 05:13:54,266 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:13:54,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:54,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:54,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:54,341 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:54,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:54,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:54,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374351090] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:54,408 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:54,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-01-18 05:13:54,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511503149] [2022-01-18 05:13:54,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:54,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 05:13:54,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:54,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 05:13:54,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:54,409 INFO L87 Difference]: Start difference. First operand 204 states and 614 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:54,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:54,504 INFO L93 Difference]: Finished difference Result 356 states and 1020 transitions. [2022-01-18 05:13:54,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:54,504 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:54,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:54,505 INFO L225 Difference]: With dead ends: 356 [2022-01-18 05:13:54,505 INFO L226 Difference]: Without dead ends: 348 [2022-01-18 05:13:54,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-01-18 05:13:54,505 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 82 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:54,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 80 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:54,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2022-01-18 05:13:54,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 216. [2022-01-18 05:13:54,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 3.0232558139534884) internal successors, (650), 215 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:54,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 650 transitions. [2022-01-18 05:13:54,508 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 650 transitions. Word has length 19 [2022-01-18 05:13:54,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:54,508 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 650 transitions. [2022-01-18 05:13:54,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:54,508 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 650 transitions. [2022-01-18 05:13:54,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:54,508 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:54,508 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:54,524 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (184)] Ended with exit code 0 [2022-01-18 05:13:54,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable352,184 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:54,709 INFO L402 AbstractCegarLoop]: === Iteration 354 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:54,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:54,709 INFO L85 PathProgramCache]: Analyzing trace with hash -153525360, now seen corresponding path program 72 times [2022-01-18 05:13:54,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:54,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156900215] [2022-01-18 05:13:54,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:54,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:54,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:54,746 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:54,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:54,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156900215] [2022-01-18 05:13:54,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156900215] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:54,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149834859] [2022-01-18 05:13:54,746 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 05:13:54,747 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:54,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:54,747 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) [2022-01-18 05:13:54,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (185)] Waiting until timeout for monitored process [2022-01-18 05:13:54,769 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 05:13:54,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:54,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:54,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:54,824 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:54,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:54,872 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:54,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149834859] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:54,872 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:54,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-01-18 05:13:54,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537360892] [2022-01-18 05:13:54,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:54,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 05:13:54,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:54,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 05:13:54,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-01-18 05:13:54,873 INFO L87 Difference]: Start difference. First operand 216 states and 650 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:54,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:54,965 INFO L93 Difference]: Finished difference Result 339 states and 995 transitions. [2022-01-18 05:13:54,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:54,966 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:54,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:54,966 INFO L225 Difference]: With dead ends: 339 [2022-01-18 05:13:54,966 INFO L226 Difference]: Without dead ends: 330 [2022-01-18 05:13:54,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-01-18 05:13:54,966 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 55 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:54,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 74 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:54,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2022-01-18 05:13:54,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 216. [2022-01-18 05:13:54,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 3.0046511627906978) internal successors, (646), 215 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:54,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 646 transitions. [2022-01-18 05:13:54,969 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 646 transitions. Word has length 19 [2022-01-18 05:13:54,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:54,969 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 646 transitions. [2022-01-18 05:13:54,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:54,969 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 646 transitions. [2022-01-18 05:13:54,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:54,969 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:54,969 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:54,985 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (185)] Ended with exit code 0 [2022-01-18 05:13:55,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 185 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable353 [2022-01-18 05:13:55,170 INFO L402 AbstractCegarLoop]: === Iteration 355 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:55,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:55,170 INFO L85 PathProgramCache]: Analyzing trace with hash -2107693454, now seen corresponding path program 72 times [2022-01-18 05:13:55,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:55,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750540112] [2022-01-18 05:13:55,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:55,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:55,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:55,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:55,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:55,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750540112] [2022-01-18 05:13:55,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750540112] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:55,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483165718] [2022-01-18 05:13:55,210 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 05:13:55,210 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:55,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:55,211 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) [2022-01-18 05:13:55,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (186)] Waiting until timeout for monitored process [2022-01-18 05:13:55,233 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 05:13:55,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:55,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:55,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:55,323 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:55,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:55,391 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:55,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483165718] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:55,392 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:55,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-01-18 05:13:55,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377629881] [2022-01-18 05:13:55,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:55,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 05:13:55,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:55,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 05:13:55,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:55,392 INFO L87 Difference]: Start difference. First operand 216 states and 646 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:55,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:55,493 INFO L93 Difference]: Finished difference Result 310 states and 907 transitions. [2022-01-18 05:13:55,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:55,493 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:55,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:55,493 INFO L225 Difference]: With dead ends: 310 [2022-01-18 05:13:55,493 INFO L226 Difference]: Without dead ends: 310 [2022-01-18 05:13:55,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-01-18 05:13:55,494 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 63 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:55,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 81 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:55,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2022-01-18 05:13:55,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 196. [2022-01-18 05:13:55,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 2.9846153846153847) internal successors, (582), 195 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:55,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 582 transitions. [2022-01-18 05:13:55,496 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 582 transitions. Word has length 19 [2022-01-18 05:13:55,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:55,496 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 582 transitions. [2022-01-18 05:13:55,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:55,496 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 582 transitions. [2022-01-18 05:13:55,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:55,497 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:55,497 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:55,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (186)] Forceful destruction successful, exit code 0 [2022-01-18 05:13:55,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 186 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable354 [2022-01-18 05:13:55,697 INFO L402 AbstractCegarLoop]: === Iteration 356 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:55,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:55,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1390342390, now seen corresponding path program 73 times [2022-01-18 05:13:55,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:55,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81251750] [2022-01-18 05:13:55,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:55,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:55,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:55,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:55,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:55,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81251750] [2022-01-18 05:13:55,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81251750] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:55,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161115968] [2022-01-18 05:13:55,734 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 05:13:55,734 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:55,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:55,735 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) [2022-01-18 05:13:55,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (187)] Waiting until timeout for monitored process [2022-01-18 05:13:55,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:55,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:55,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:55,839 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:55,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:55,905 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:55,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161115968] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:55,906 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:55,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-01-18 05:13:55,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318466446] [2022-01-18 05:13:55,906 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:55,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 05:13:55,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:55,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 05:13:55,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:13:55,906 INFO L87 Difference]: Start difference. First operand 196 states and 582 transitions. Second operand has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:56,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:56,003 INFO L93 Difference]: Finished difference Result 457 states and 1329 transitions. [2022-01-18 05:13:56,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:56,003 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:56,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:56,003 INFO L225 Difference]: With dead ends: 457 [2022-01-18 05:13:56,004 INFO L226 Difference]: Without dead ends: 457 [2022-01-18 05:13:56,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-01-18 05:13:56,004 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 86 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:56,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 74 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:56,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2022-01-18 05:13:56,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 204. [2022-01-18 05:13:56,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 203 states have (on average 3.0541871921182264) internal successors, (620), 203 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:56,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 620 transitions. [2022-01-18 05:13:56,007 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 620 transitions. Word has length 19 [2022-01-18 05:13:56,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:56,007 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 620 transitions. [2022-01-18 05:13:56,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:56,007 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 620 transitions. [2022-01-18 05:13:56,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:56,007 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:56,007 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:56,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (187)] Forceful destruction successful, exit code 0 [2022-01-18 05:13:56,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable355,187 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:56,223 INFO L402 AbstractCegarLoop]: === Iteration 357 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:56,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:56,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1229122450, now seen corresponding path program 74 times [2022-01-18 05:13:56,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:56,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637088514] [2022-01-18 05:13:56,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:56,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:56,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:56,254 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:56,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:56,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637088514] [2022-01-18 05:13:56,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637088514] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:56,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451420556] [2022-01-18 05:13:56,255 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 05:13:56,255 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:56,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:56,256 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) [2022-01-18 05:13:56,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (188)] Waiting until timeout for monitored process [2022-01-18 05:13:56,278 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:13:56,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:56,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:56,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:56,346 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:56,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:56,405 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:56,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451420556] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:56,405 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:56,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-01-18 05:13:56,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836598812] [2022-01-18 05:13:56,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:56,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 05:13:56,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:56,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 05:13:56,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:13:56,406 INFO L87 Difference]: Start difference. First operand 204 states and 620 transitions. Second operand has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:56,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:56,490 INFO L93 Difference]: Finished difference Result 439 states and 1260 transitions. [2022-01-18 05:13:56,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:56,490 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:56,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:56,491 INFO L225 Difference]: With dead ends: 439 [2022-01-18 05:13:56,491 INFO L226 Difference]: Without dead ends: 433 [2022-01-18 05:13:56,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-01-18 05:13:56,491 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 109 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:56,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 65 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:56,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2022-01-18 05:13:56,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 207. [2022-01-18 05:13:56,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 3.0242718446601944) internal successors, (623), 206 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:56,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 623 transitions. [2022-01-18 05:13:56,494 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 623 transitions. Word has length 19 [2022-01-18 05:13:56,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:56,494 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 623 transitions. [2022-01-18 05:13:56,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:56,494 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 623 transitions. [2022-01-18 05:13:56,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:56,494 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:56,494 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:56,510 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (188)] Ended with exit code 0 [2022-01-18 05:13:56,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 188 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable356 [2022-01-18 05:13:56,695 INFO L402 AbstractCegarLoop]: === Iteration 358 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:56,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:56,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1026999314, now seen corresponding path program 73 times [2022-01-18 05:13:56,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:56,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667613449] [2022-01-18 05:13:56,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:56,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:56,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:56,727 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:56,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:56,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667613449] [2022-01-18 05:13:56,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667613449] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:13:56,728 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:13:56,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:13:56,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436826198] [2022-01-18 05:13:56,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:13:56,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:13:56,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:56,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:13:56,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:13:56,728 INFO L87 Difference]: Start difference. First operand 207 states and 623 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:56,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:56,817 INFO L93 Difference]: Finished difference Result 424 states and 1206 transitions. [2022-01-18 05:13:56,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:56,818 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:56,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:56,818 INFO L225 Difference]: With dead ends: 424 [2022-01-18 05:13:56,818 INFO L226 Difference]: Without dead ends: 416 [2022-01-18 05:13:56,818 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:13:56,818 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 69 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:56,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 72 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:56,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2022-01-18 05:13:56,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 225. [2022-01-18 05:13:56,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 224 states have (on average 3.0267857142857144) internal successors, (678), 224 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:56,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 678 transitions. [2022-01-18 05:13:56,821 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 678 transitions. Word has length 19 [2022-01-18 05:13:56,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:56,821 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 678 transitions. [2022-01-18 05:13:56,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:56,822 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 678 transitions. [2022-01-18 05:13:56,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:56,822 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:56,822 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:56,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable357 [2022-01-18 05:13:56,822 INFO L402 AbstractCegarLoop]: === Iteration 359 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:56,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:56,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1934660726, now seen corresponding path program 74 times [2022-01-18 05:13:56,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:56,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642744191] [2022-01-18 05:13:56,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:56,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:56,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:56,857 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:56,857 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:56,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642744191] [2022-01-18 05:13:56,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642744191] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:13:56,857 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:13:56,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:13:56,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117131314] [2022-01-18 05:13:56,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:13:56,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:13:56,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:56,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:13:56,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:13:56,858 INFO L87 Difference]: Start difference. First operand 225 states and 678 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:56,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:56,947 INFO L93 Difference]: Finished difference Result 430 states and 1221 transitions. [2022-01-18 05:13:56,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:56,947 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:56,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:56,948 INFO L225 Difference]: With dead ends: 430 [2022-01-18 05:13:56,948 INFO L226 Difference]: Without dead ends: 422 [2022-01-18 05:13:56,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:13:56,948 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 69 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:56,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 74 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:56,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-01-18 05:13:56,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 225. [2022-01-18 05:13:56,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 224 states have (on average 3.03125) internal successors, (679), 224 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:56,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 679 transitions. [2022-01-18 05:13:56,951 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 679 transitions. Word has length 19 [2022-01-18 05:13:56,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:56,951 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 679 transitions. [2022-01-18 05:13:56,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:56,951 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 679 transitions. [2022-01-18 05:13:56,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:56,952 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:56,952 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:56,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable358 [2022-01-18 05:13:56,952 INFO L402 AbstractCegarLoop]: === Iteration 360 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:56,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:56,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1264124024, now seen corresponding path program 75 times [2022-01-18 05:13:56,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:56,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074383089] [2022-01-18 05:13:56,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:56,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:56,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:56,988 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:56,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:56,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074383089] [2022-01-18 05:13:56,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074383089] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:56,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600579209] [2022-01-18 05:13:56,988 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:13:56,988 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:56,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:56,989 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) [2022-01-18 05:13:56,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (189)] Waiting until timeout for monitored process [2022-01-18 05:13:57,012 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 05:13:57,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:57,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:57,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:57,094 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:57,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:57,159 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:57,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600579209] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:57,159 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:57,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-01-18 05:13:57,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135870409] [2022-01-18 05:13:57,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:57,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 05:13:57,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:57,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 05:13:57,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:13:57,160 INFO L87 Difference]: Start difference. First operand 225 states and 679 transitions. Second operand has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:57,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:57,251 INFO L93 Difference]: Finished difference Result 465 states and 1336 transitions. [2022-01-18 05:13:57,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:57,251 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:57,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:57,252 INFO L225 Difference]: With dead ends: 465 [2022-01-18 05:13:57,252 INFO L226 Difference]: Without dead ends: 465 [2022-01-18 05:13:57,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2022-01-18 05:13:57,252 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 83 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:57,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 73 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:57,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2022-01-18 05:13:57,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 223. [2022-01-18 05:13:57,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 222 states have (on average 3.0225225225225225) internal successors, (671), 222 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:57,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 671 transitions. [2022-01-18 05:13:57,255 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 671 transitions. Word has length 19 [2022-01-18 05:13:57,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:57,256 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 671 transitions. [2022-01-18 05:13:57,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:57,256 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 671 transitions. [2022-01-18 05:13:57,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:57,256 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:57,256 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:57,271 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (189)] Ended with exit code 0 [2022-01-18 05:13:57,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 189 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable359 [2022-01-18 05:13:57,456 INFO L402 AbstractCegarLoop]: === Iteration 361 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:57,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:57,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1566481458, now seen corresponding path program 75 times [2022-01-18 05:13:57,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:57,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207201109] [2022-01-18 05:13:57,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:57,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:57,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:57,491 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:57,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:57,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207201109] [2022-01-18 05:13:57,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207201109] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:57,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770469353] [2022-01-18 05:13:57,491 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:13:57,491 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:57,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:57,492 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) [2022-01-18 05:13:57,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (190)] Waiting until timeout for monitored process [2022-01-18 05:13:57,514 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 05:13:57,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:57,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:57,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:57,587 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:57,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:57,646 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:57,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770469353] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:57,646 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:57,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-01-18 05:13:57,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657739267] [2022-01-18 05:13:57,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:57,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 05:13:57,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:57,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 05:13:57,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:57,647 INFO L87 Difference]: Start difference. First operand 223 states and 671 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:57,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:57,754 INFO L93 Difference]: Finished difference Result 430 states and 1208 transitions. [2022-01-18 05:13:57,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:57,754 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:57,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:57,755 INFO L225 Difference]: With dead ends: 430 [2022-01-18 05:13:57,755 INFO L226 Difference]: Without dead ends: 422 [2022-01-18 05:13:57,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2022-01-18 05:13:57,755 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 82 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:57,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 106 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:57,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-01-18 05:13:57,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 216. [2022-01-18 05:13:57,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 3.0325581395348835) internal successors, (652), 215 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:57,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 652 transitions. [2022-01-18 05:13:57,758 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 652 transitions. Word has length 19 [2022-01-18 05:13:57,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:57,758 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 652 transitions. [2022-01-18 05:13:57,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:57,758 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 652 transitions. [2022-01-18 05:13:57,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:57,759 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:57,759 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:57,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (190)] Forceful destruction successful, exit code 0 [2022-01-18 05:13:57,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable360,190 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:57,959 INFO L402 AbstractCegarLoop]: === Iteration 362 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:57,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:57,959 INFO L85 PathProgramCache]: Analyzing trace with hash -199360724, now seen corresponding path program 76 times [2022-01-18 05:13:57,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:57,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516758836] [2022-01-18 05:13:57,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:57,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:57,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:57,990 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:57,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:57,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516758836] [2022-01-18 05:13:57,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516758836] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:57,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065637859] [2022-01-18 05:13:57,990 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 05:13:57,990 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:57,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:57,991 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) [2022-01-18 05:13:57,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (191)] Waiting until timeout for monitored process [2022-01-18 05:13:58,013 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 05:13:58,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:58,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:58,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:58,084 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:58,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:58,142 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:58,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065637859] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:58,142 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:58,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-01-18 05:13:58,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988737509] [2022-01-18 05:13:58,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:58,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 05:13:58,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:58,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 05:13:58,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:13:58,142 INFO L87 Difference]: Start difference. First operand 216 states and 652 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:58,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:58,234 INFO L93 Difference]: Finished difference Result 413 states and 1189 transitions. [2022-01-18 05:13:58,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:58,234 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:58,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:58,235 INFO L225 Difference]: With dead ends: 413 [2022-01-18 05:13:58,235 INFO L226 Difference]: Without dead ends: 404 [2022-01-18 05:13:58,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2022-01-18 05:13:58,235 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 81 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:58,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 81 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:58,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2022-01-18 05:13:58,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 216. [2022-01-18 05:13:58,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 3.013953488372093) internal successors, (648), 215 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:58,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 648 transitions. [2022-01-18 05:13:58,238 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 648 transitions. Word has length 19 [2022-01-18 05:13:58,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:58,238 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 648 transitions. [2022-01-18 05:13:58,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:58,238 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 648 transitions. [2022-01-18 05:13:58,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:58,239 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:58,239 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:58,254 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (191)] Ended with exit code 0 [2022-01-18 05:13:58,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable361,191 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:58,439 INFO L402 AbstractCegarLoop]: === Iteration 363 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:58,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:58,439 INFO L85 PathProgramCache]: Analyzing trace with hash 2141438478, now seen corresponding path program 76 times [2022-01-18 05:13:58,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:58,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379315658] [2022-01-18 05:13:58,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:58,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:58,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:58,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:58,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:58,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379315658] [2022-01-18 05:13:58,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379315658] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:58,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563362683] [2022-01-18 05:13:58,479 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 05:13:58,479 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:58,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:58,481 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) [2022-01-18 05:13:58,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (192)] Waiting until timeout for monitored process [2022-01-18 05:13:58,504 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 05:13:58,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:13:58,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:58,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:58,587 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:58,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:58,657 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:58,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563362683] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:58,658 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:58,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-01-18 05:13:58,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922461266] [2022-01-18 05:13:58,658 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:58,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 05:13:58,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:58,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 05:13:58,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:58,658 INFO L87 Difference]: Start difference. First operand 216 states and 648 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:58,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:58,756 INFO L93 Difference]: Finished difference Result 411 states and 1188 transitions. [2022-01-18 05:13:58,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:58,756 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:58,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:58,757 INFO L225 Difference]: With dead ends: 411 [2022-01-18 05:13:58,757 INFO L226 Difference]: Without dead ends: 411 [2022-01-18 05:13:58,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-01-18 05:13:58,757 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 94 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:58,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 87 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:58,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2022-01-18 05:13:58,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 212. [2022-01-18 05:13:58,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 3.014218009478673) internal successors, (636), 211 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:58,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 636 transitions. [2022-01-18 05:13:58,760 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 636 transitions. Word has length 19 [2022-01-18 05:13:58,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:58,760 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 636 transitions. [2022-01-18 05:13:58,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:58,760 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 636 transitions. [2022-01-18 05:13:58,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:58,760 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:58,760 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:58,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (192)] Forceful destruction successful, exit code 0 [2022-01-18 05:13:58,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable362,192 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:58,975 INFO L402 AbstractCegarLoop]: === Iteration 364 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:58,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:58,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1812901972, now seen corresponding path program 77 times [2022-01-18 05:13:58,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:58,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764412948] [2022-01-18 05:13:58,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:58,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:58,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:59,005 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:59,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:59,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764412948] [2022-01-18 05:13:59,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764412948] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:13:59,006 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:13:59,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:13:59,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994601043] [2022-01-18 05:13:59,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:13:59,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:13:59,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:59,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:13:59,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:13:59,006 INFO L87 Difference]: Start difference. First operand 212 states and 636 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:59,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:59,087 INFO L93 Difference]: Finished difference Result 384 states and 1100 transitions. [2022-01-18 05:13:59,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:59,087 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:59,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:59,087 INFO L225 Difference]: With dead ends: 384 [2022-01-18 05:13:59,087 INFO L226 Difference]: Without dead ends: 378 [2022-01-18 05:13:59,088 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:13:59,088 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 63 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:59,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 49 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:59,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2022-01-18 05:13:59,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 222. [2022-01-18 05:13:59,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 221 states have (on average 2.990950226244344) internal successors, (661), 221 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:59,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 661 transitions. [2022-01-18 05:13:59,090 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 661 transitions. Word has length 19 [2022-01-18 05:13:59,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:59,091 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 661 transitions. [2022-01-18 05:13:59,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:59,091 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 661 transitions. [2022-01-18 05:13:59,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:59,091 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:59,091 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:59,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable363 [2022-01-18 05:13:59,091 INFO L402 AbstractCegarLoop]: === Iteration 365 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:59,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:59,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1149511386, now seen corresponding path program 78 times [2022-01-18 05:13:59,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:59,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069556327] [2022-01-18 05:13:59,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:59,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:59,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:59,120 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:59,121 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:59,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069556327] [2022-01-18 05:13:59,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069556327] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:13:59,121 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:13:59,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:13:59,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021606457] [2022-01-18 05:13:59,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:13:59,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:13:59,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:59,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:13:59,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:13:59,121 INFO L87 Difference]: Start difference. First operand 222 states and 661 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:59,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:59,207 INFO L93 Difference]: Finished difference Result 348 states and 1017 transitions. [2022-01-18 05:13:59,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:59,207 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:59,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:59,208 INFO L225 Difference]: With dead ends: 348 [2022-01-18 05:13:59,208 INFO L226 Difference]: Without dead ends: 337 [2022-01-18 05:13:59,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:13:59,208 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 45 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:59,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 57 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:59,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2022-01-18 05:13:59,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 212. [2022-01-18 05:13:59,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 3.009478672985782) internal successors, (635), 211 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:59,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 635 transitions. [2022-01-18 05:13:59,211 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 635 transitions. Word has length 19 [2022-01-18 05:13:59,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:59,211 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 635 transitions. [2022-01-18 05:13:59,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:59,211 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 635 transitions. [2022-01-18 05:13:59,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:59,211 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:59,211 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:59,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable364 [2022-01-18 05:13:59,211 INFO L402 AbstractCegarLoop]: === Iteration 366 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:59,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:59,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1731012878, now seen corresponding path program 77 times [2022-01-18 05:13:59,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:59,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285103714] [2022-01-18 05:13:59,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:59,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:59,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:59,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:59,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:59,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285103714] [2022-01-18 05:13:59,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285103714] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:13:59,247 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:13:59,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:13:59,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263272262] [2022-01-18 05:13:59,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:13:59,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:13:59,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:59,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:13:59,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:13:59,248 INFO L87 Difference]: Start difference. First operand 212 states and 635 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:59,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:59,340 INFO L93 Difference]: Finished difference Result 362 states and 1032 transitions. [2022-01-18 05:13:59,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:59,341 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:59,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:59,341 INFO L225 Difference]: With dead ends: 362 [2022-01-18 05:13:59,341 INFO L226 Difference]: Without dead ends: 356 [2022-01-18 05:13:59,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:13:59,341 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 59 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:59,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 73 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:59,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-01-18 05:13:59,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 218. [2022-01-18 05:13:59,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 2.9907834101382487) internal successors, (649), 217 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:59,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 649 transitions. [2022-01-18 05:13:59,344 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 649 transitions. Word has length 19 [2022-01-18 05:13:59,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:59,344 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 649 transitions. [2022-01-18 05:13:59,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:59,344 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 649 transitions. [2022-01-18 05:13:59,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:59,345 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:59,345 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:59,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable365 [2022-01-18 05:13:59,345 INFO L402 AbstractCegarLoop]: === Iteration 367 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:59,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:59,345 INFO L85 PathProgramCache]: Analyzing trace with hash 402083766, now seen corresponding path program 78 times [2022-01-18 05:13:59,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:59,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266945106] [2022-01-18 05:13:59,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:59,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:59,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:59,385 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:59,385 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:59,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266945106] [2022-01-18 05:13:59,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266945106] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:13:59,385 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:13:59,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:13:59,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111059708] [2022-01-18 05:13:59,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:13:59,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:13:59,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:59,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:13:59,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:13:59,386 INFO L87 Difference]: Start difference. First operand 218 states and 649 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:59,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:59,481 INFO L93 Difference]: Finished difference Result 340 states and 995 transitions. [2022-01-18 05:13:59,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:59,481 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:59,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:59,482 INFO L225 Difference]: With dead ends: 340 [2022-01-18 05:13:59,482 INFO L226 Difference]: Without dead ends: 340 [2022-01-18 05:13:59,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:13:59,482 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 43 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:59,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 74 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:59,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2022-01-18 05:13:59,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 195. [2022-01-18 05:13:59,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 2.984536082474227) internal successors, (579), 194 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:59,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 579 transitions. [2022-01-18 05:13:59,484 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 579 transitions. Word has length 19 [2022-01-18 05:13:59,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:59,485 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 579 transitions. [2022-01-18 05:13:59,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:59,485 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 579 transitions. [2022-01-18 05:13:59,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:59,485 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:59,485 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:59,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable366 [2022-01-18 05:13:59,485 INFO L402 AbstractCegarLoop]: === Iteration 368 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:13:59,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:13:59,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1165716212, now seen corresponding path program 79 times [2022-01-18 05:13:59,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:13:59,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351046147] [2022-01-18 05:13:59,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:13:59,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:13:59,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:59,524 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:59,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:13:59,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351046147] [2022-01-18 05:13:59,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351046147] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:13:59,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516105229] [2022-01-18 05:13:59,524 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 05:13:59,524 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:13:59,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:13:59,525 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) [2022-01-18 05:13:59,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (193)] Waiting until timeout for monitored process [2022-01-18 05:13:59,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:13:59,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:13:59,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:13:59,632 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:59,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:13:59,702 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:13:59,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516105229] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:13:59,703 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:13:59,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-01-18 05:13:59,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679160924] [2022-01-18 05:13:59,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:13:59,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 05:13:59,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:13:59,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 05:13:59,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:13:59,703 INFO L87 Difference]: Start difference. First operand 195 states and 579 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:59,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:13:59,816 INFO L93 Difference]: Finished difference Result 375 states and 1082 transitions. [2022-01-18 05:13:59,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:13:59,817 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:13:59,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:13:59,817 INFO L225 Difference]: With dead ends: 375 [2022-01-18 05:13:59,817 INFO L226 Difference]: Without dead ends: 375 [2022-01-18 05:13:59,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2022-01-18 05:13:59,818 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 73 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:13:59,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 84 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:13:59,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2022-01-18 05:13:59,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 201. [2022-01-18 05:13:59,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 200 states have (on average 3.015) internal successors, (603), 200 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:59,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 603 transitions. [2022-01-18 05:13:59,820 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 603 transitions. Word has length 19 [2022-01-18 05:13:59,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:13:59,820 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 603 transitions. [2022-01-18 05:13:59,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:13:59,821 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 603 transitions. [2022-01-18 05:13:59,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:13:59,821 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:13:59,821 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:13:59,836 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (193)] Ended with exit code 0 [2022-01-18 05:14:00,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 193 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable367 [2022-01-18 05:14:00,021 INFO L402 AbstractCegarLoop]: === Iteration 369 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:14:00,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:14:00,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1326936152, now seen corresponding path program 80 times [2022-01-18 05:14:00,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:14:00,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056469091] [2022-01-18 05:14:00,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:14:00,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:14:00,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:14:00,055 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:00,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:14:00,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056469091] [2022-01-18 05:14:00,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056469091] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:14:00,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798366714] [2022-01-18 05:14:00,055 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 05:14:00,055 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:14:00,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:14:00,056 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) [2022-01-18 05:14:00,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (194)] Waiting until timeout for monitored process [2022-01-18 05:14:00,079 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:14:00,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:14:00,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:14:00,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:14:00,148 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:00,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:14:00,206 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:00,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798366714] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:14:00,207 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:14:00,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-01-18 05:14:00,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744899085] [2022-01-18 05:14:00,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:14:00,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 05:14:00,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:14:00,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 05:14:00,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:14:00,207 INFO L87 Difference]: Start difference. First operand 201 states and 603 transitions. Second operand has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:00,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:14:00,308 INFO L93 Difference]: Finished difference Result 369 states and 1055 transitions. [2022-01-18 05:14:00,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:14:00,308 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:14:00,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:14:00,309 INFO L225 Difference]: With dead ends: 369 [2022-01-18 05:14:00,309 INFO L226 Difference]: Without dead ends: 363 [2022-01-18 05:14:00,309 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2022-01-18 05:14:00,309 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 70 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:14:00,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 82 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:14:00,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2022-01-18 05:14:00,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 198. [2022-01-18 05:14:00,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 3.0) internal successors, (591), 197 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:00,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 591 transitions. [2022-01-18 05:14:00,312 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 591 transitions. Word has length 19 [2022-01-18 05:14:00,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:14:00,312 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 591 transitions. [2022-01-18 05:14:00,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:00,312 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 591 transitions. [2022-01-18 05:14:00,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:14:00,312 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:14:00,312 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:14:00,327 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (194)] Ended with exit code 0 [2022-01-18 05:14:00,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 194 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable368 [2022-01-18 05:14:00,513 INFO L402 AbstractCegarLoop]: === Iteration 370 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:14:00,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:14:00,513 INFO L85 PathProgramCache]: Analyzing trace with hash 354900758, now seen corresponding path program 81 times [2022-01-18 05:14:00,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:14:00,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875323615] [2022-01-18 05:14:00,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:14:00,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:14:00,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:14:00,541 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:00,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:14:00,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875323615] [2022-01-18 05:14:00,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875323615] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:14:00,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073929941] [2022-01-18 05:14:00,542 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:14:00,542 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:14:00,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:14:00,542 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) [2022-01-18 05:14:00,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (195)] Waiting until timeout for monitored process [2022-01-18 05:14:00,565 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 05:14:00,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:14:00,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:14:00,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:14:00,621 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:00,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:14:00,669 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:00,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073929941] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:14:00,669 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:14:00,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-01-18 05:14:00,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890665398] [2022-01-18 05:14:00,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:14:00,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 05:14:00,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:14:00,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 05:14:00,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:14:00,670 INFO L87 Difference]: Start difference. First operand 198 states and 591 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:00,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:14:00,773 INFO L93 Difference]: Finished difference Result 357 states and 1013 transitions. [2022-01-18 05:14:00,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:14:00,773 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:14:00,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:14:00,774 INFO L225 Difference]: With dead ends: 357 [2022-01-18 05:14:00,774 INFO L226 Difference]: Without dead ends: 345 [2022-01-18 05:14:00,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2022-01-18 05:14:00,774 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 81 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:14:00,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 91 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:14:00,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2022-01-18 05:14:00,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 195. [2022-01-18 05:14:00,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 2.984536082474227) internal successors, (579), 194 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:00,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 579 transitions. [2022-01-18 05:14:00,777 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 579 transitions. Word has length 19 [2022-01-18 05:14:00,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:14:00,777 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 579 transitions. [2022-01-18 05:14:00,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:00,777 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 579 transitions. [2022-01-18 05:14:00,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:14:00,777 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:14:00,777 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:14:00,792 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (195)] Forceful destruction successful, exit code 0 [2022-01-18 05:14:00,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 195 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable369 [2022-01-18 05:14:00,977 INFO L402 AbstractCegarLoop]: === Iteration 371 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:14:00,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:14:00,978 INFO L85 PathProgramCache]: Analyzing trace with hash -607781832, now seen corresponding path program 79 times [2022-01-18 05:14:00,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:14:00,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177738351] [2022-01-18 05:14:00,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:14:00,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:14:00,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:14:01,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:01,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:14:01,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177738351] [2022-01-18 05:14:01,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177738351] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:14:01,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:14:01,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:14:01,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740854929] [2022-01-18 05:14:01,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:14:01,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:14:01,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:14:01,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:14:01,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:14:01,018 INFO L87 Difference]: Start difference. First operand 195 states and 579 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:01,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:14:01,100 INFO L93 Difference]: Finished difference Result 335 states and 937 transitions. [2022-01-18 05:14:01,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:14:01,100 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:14:01,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:14:01,101 INFO L225 Difference]: With dead ends: 335 [2022-01-18 05:14:01,101 INFO L226 Difference]: Without dead ends: 327 [2022-01-18 05:14:01,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:14:01,101 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 64 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:14:01,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 58 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:14:01,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2022-01-18 05:14:01,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 212. [2022-01-18 05:14:01,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 2.9668246445497632) internal successors, (626), 211 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:01,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 626 transitions. [2022-01-18 05:14:01,104 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 626 transitions. Word has length 19 [2022-01-18 05:14:01,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:14:01,104 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 626 transitions. [2022-01-18 05:14:01,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:01,104 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 626 transitions. [2022-01-18 05:14:01,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:14:01,104 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:14:01,104 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:14:01,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable370 [2022-01-18 05:14:01,104 INFO L402 AbstractCegarLoop]: === Iteration 372 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:14:01,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:14:01,104 INFO L85 PathProgramCache]: Analyzing trace with hash 299879580, now seen corresponding path program 80 times [2022-01-18 05:14:01,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:14:01,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043078124] [2022-01-18 05:14:01,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:14:01,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:14:01,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:14:01,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:01,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:14:01,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043078124] [2022-01-18 05:14:01,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043078124] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:14:01,135 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:14:01,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:14:01,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958063725] [2022-01-18 05:14:01,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:14:01,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:14:01,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:14:01,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:14:01,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:14:01,136 INFO L87 Difference]: Start difference. First operand 212 states and 626 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:01,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:14:01,220 INFO L93 Difference]: Finished difference Result 333 states and 932 transitions. [2022-01-18 05:14:01,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:14:01,220 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:14:01,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:14:01,220 INFO L225 Difference]: With dead ends: 333 [2022-01-18 05:14:01,220 INFO L226 Difference]: Without dead ends: 325 [2022-01-18 05:14:01,221 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:14:01,221 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 65 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:14:01,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 57 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:14:01,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2022-01-18 05:14:01,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 210. [2022-01-18 05:14:01,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 209 states have (on average 2.9617224880382773) internal successors, (619), 209 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:01,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 619 transitions. [2022-01-18 05:14:01,223 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 619 transitions. Word has length 19 [2022-01-18 05:14:01,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:14:01,223 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 619 transitions. [2022-01-18 05:14:01,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:01,224 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 619 transitions. [2022-01-18 05:14:01,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:14:01,224 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:14:01,224 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:14:01,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable371 [2022-01-18 05:14:01,224 INFO L402 AbstractCegarLoop]: === Iteration 373 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:14:01,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:14:01,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1471716980, now seen corresponding path program 81 times [2022-01-18 05:14:01,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:14:01,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107375594] [2022-01-18 05:14:01,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:14:01,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:14:01,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:14:01,252 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:01,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:14:01,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107375594] [2022-01-18 05:14:01,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107375594] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:14:01,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:14:01,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:14:01,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755478188] [2022-01-18 05:14:01,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:14:01,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:14:01,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:14:01,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:14:01,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:14:01,253 INFO L87 Difference]: Start difference. First operand 210 states and 619 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:01,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:14:01,329 INFO L93 Difference]: Finished difference Result 347 states and 973 transitions. [2022-01-18 05:14:01,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:14:01,330 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:14:01,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:14:01,330 INFO L225 Difference]: With dead ends: 347 [2022-01-18 05:14:01,330 INFO L226 Difference]: Without dead ends: 333 [2022-01-18 05:14:01,330 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:14:01,330 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 63 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:14:01,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 60 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:14:01,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2022-01-18 05:14:01,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 208. [2022-01-18 05:14:01,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 2.9613526570048307) internal successors, (613), 207 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:01,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 613 transitions. [2022-01-18 05:14:01,333 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 613 transitions. Word has length 19 [2022-01-18 05:14:01,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:14:01,333 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 613 transitions. [2022-01-18 05:14:01,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:01,333 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 613 transitions. [2022-01-18 05:14:01,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:14:01,333 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:14:01,333 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:14:01,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable372 [2022-01-18 05:14:01,334 INFO L402 AbstractCegarLoop]: === Iteration 374 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:14:01,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:14:01,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1429007328, now seen corresponding path program 82 times [2022-01-18 05:14:01,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:14:01,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052889904] [2022-01-18 05:14:01,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:14:01,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:14:01,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:14:01,382 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:01,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:14:01,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052889904] [2022-01-18 05:14:01,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052889904] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:14:01,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967381140] [2022-01-18 05:14:01,382 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 05:14:01,382 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:14:01,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:14:01,383 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) [2022-01-18 05:14:01,421 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 05:14:01,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:14:01,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (196)] Waiting until timeout for monitored process [2022-01-18 05:14:01,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:14:01,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:14:01,511 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:01,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:14:01,581 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:01,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967381140] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:14:01,581 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:14:01,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-01-18 05:14:01,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141336114] [2022-01-18 05:14:01,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:14:01,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 05:14:01,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:14:01,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 05:14:01,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:14:01,582 INFO L87 Difference]: Start difference. First operand 208 states and 613 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:01,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:14:01,694 INFO L93 Difference]: Finished difference Result 421 states and 1188 transitions. [2022-01-18 05:14:01,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:14:01,694 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:14:01,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:14:01,695 INFO L225 Difference]: With dead ends: 421 [2022-01-18 05:14:01,695 INFO L226 Difference]: Without dead ends: 421 [2022-01-18 05:14:01,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-01-18 05:14:01,695 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 116 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:14:01,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 97 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:14:01,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2022-01-18 05:14:01,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 214. [2022-01-18 05:14:01,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 3.004694835680751) internal successors, (640), 213 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:01,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 640 transitions. [2022-01-18 05:14:01,698 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 640 transitions. Word has length 19 [2022-01-18 05:14:01,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:14:01,698 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 640 transitions. [2022-01-18 05:14:01,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:01,698 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 640 transitions. [2022-01-18 05:14:01,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:14:01,698 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:14:01,698 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:14:01,714 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (196)] Ended with exit code 0 [2022-01-18 05:14:01,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable373,196 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:14:01,899 INFO L402 AbstractCegarLoop]: === Iteration 375 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:14:01,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:14:01,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1590227268, now seen corresponding path program 83 times [2022-01-18 05:14:01,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:14:01,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036900653] [2022-01-18 05:14:01,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:14:01,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:14:01,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:14:01,933 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:01,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:14:01,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036900653] [2022-01-18 05:14:01,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036900653] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:14:01,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154961085] [2022-01-18 05:14:01,934 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 05:14:01,934 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:14:01,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:14:01,935 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) [2022-01-18 05:14:01,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (197)] Waiting until timeout for monitored process [2022-01-18 05:14:01,957 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:14:01,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:14:01,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:14:01,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:14:02,035 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:02,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:14:02,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:02,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154961085] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:14:02,097 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:14:02,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-01-18 05:14:02,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900341307] [2022-01-18 05:14:02,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:14:02,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 05:14:02,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:14:02,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 05:14:02,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:14:02,097 INFO L87 Difference]: Start difference. First operand 214 states and 640 transitions. Second operand has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:02,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:14:02,191 INFO L93 Difference]: Finished difference Result 403 states and 1119 transitions. [2022-01-18 05:14:02,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:14:02,191 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:14:02,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:14:02,192 INFO L225 Difference]: With dead ends: 403 [2022-01-18 05:14:02,192 INFO L226 Difference]: Without dead ends: 397 [2022-01-18 05:14:02,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-01-18 05:14:02,192 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 106 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:14:02,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 75 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:14:02,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2022-01-18 05:14:02,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 217. [2022-01-18 05:14:02,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 2.9768518518518516) internal successors, (643), 216 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:02,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 643 transitions. [2022-01-18 05:14:02,195 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 643 transitions. Word has length 19 [2022-01-18 05:14:02,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:14:02,195 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 643 transitions. [2022-01-18 05:14:02,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:02,195 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 643 transitions. [2022-01-18 05:14:02,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:14:02,195 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:14:02,195 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:14:02,211 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (197)] Ended with exit code 0 [2022-01-18 05:14:02,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable374,197 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:14:02,396 INFO L402 AbstractCegarLoop]: === Iteration 376 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:14:02,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:14:02,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1792350404, now seen corresponding path program 82 times [2022-01-18 05:14:02,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:14:02,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496392258] [2022-01-18 05:14:02,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:14:02,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:14:02,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:14:02,431 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:02,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:14:02,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496392258] [2022-01-18 05:14:02,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496392258] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:14:02,431 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:14:02,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:14:02,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039701578] [2022-01-18 05:14:02,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:14:02,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:14:02,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:14:02,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:14:02,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:14:02,432 INFO L87 Difference]: Start difference. First operand 217 states and 643 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:02,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:14:02,506 INFO L93 Difference]: Finished difference Result 380 states and 1037 transitions. [2022-01-18 05:14:02,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:14:02,507 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:14:02,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:14:02,507 INFO L225 Difference]: With dead ends: 380 [2022-01-18 05:14:02,507 INFO L226 Difference]: Without dead ends: 372 [2022-01-18 05:14:02,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:14:02,507 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 89 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:14:02,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 50 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:14:02,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2022-01-18 05:14:02,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 227. [2022-01-18 05:14:02,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 226 states have (on average 3.0) internal successors, (678), 226 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:02,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 678 transitions. [2022-01-18 05:14:02,510 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 678 transitions. Word has length 19 [2022-01-18 05:14:02,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:14:02,510 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 678 transitions. [2022-01-18 05:14:02,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:02,510 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 678 transitions. [2022-01-18 05:14:02,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:14:02,511 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:14:02,511 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:14:02,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable375 [2022-01-18 05:14:02,511 INFO L402 AbstractCegarLoop]: === Iteration 377 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:14:02,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:14:02,511 INFO L85 PathProgramCache]: Analyzing trace with hash -884688992, now seen corresponding path program 83 times [2022-01-18 05:14:02,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:14:02,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188656925] [2022-01-18 05:14:02,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:14:02,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:14:02,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:14:02,544 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:02,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:14:02,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188656925] [2022-01-18 05:14:02,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188656925] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:14:02,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:14:02,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:14:02,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801675824] [2022-01-18 05:14:02,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:14:02,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:14:02,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:14:02,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:14:02,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:14:02,545 INFO L87 Difference]: Start difference. First operand 227 states and 678 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:02,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:14:02,629 INFO L93 Difference]: Finished difference Result 386 states and 1052 transitions. [2022-01-18 05:14:02,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:14:02,629 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:14:02,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:14:02,629 INFO L225 Difference]: With dead ends: 386 [2022-01-18 05:14:02,629 INFO L226 Difference]: Without dead ends: 378 [2022-01-18 05:14:02,629 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:14:02,630 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 85 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:14:02,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 62 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:14:02,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2022-01-18 05:14:02,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 225. [2022-01-18 05:14:02,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 224 states have (on average 3.0089285714285716) internal successors, (674), 224 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:02,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 674 transitions. [2022-01-18 05:14:02,632 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 674 transitions. Word has length 19 [2022-01-18 05:14:02,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:14:02,633 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 674 transitions. [2022-01-18 05:14:02,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:02,633 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 674 transitions. [2022-01-18 05:14:02,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:14:02,633 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:14:02,633 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:14:02,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable376 [2022-01-18 05:14:02,633 INFO L402 AbstractCegarLoop]: === Iteration 378 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:14:02,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:14:02,633 INFO L85 PathProgramCache]: Analyzing trace with hash 211493554, now seen corresponding path program 84 times [2022-01-18 05:14:02,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:14:02,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002847076] [2022-01-18 05:14:02,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:14:02,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:14:02,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:14:02,672 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:02,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:14:02,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002847076] [2022-01-18 05:14:02,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002847076] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:14:02,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616294457] [2022-01-18 05:14:02,672 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 05:14:02,672 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:14:02,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:14:02,673 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) [2022-01-18 05:14:02,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (198)] Waiting until timeout for monitored process [2022-01-18 05:14:02,695 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 05:14:02,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:14:02,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:14:02,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:14:02,787 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:02,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:14:02,858 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:02,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616294457] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:14:02,858 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:14:02,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-01-18 05:14:02,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200377993] [2022-01-18 05:14:02,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:14:02,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 05:14:02,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:14:02,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 05:14:02,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:14:02,859 INFO L87 Difference]: Start difference. First operand 225 states and 674 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:02,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:14:02,985 INFO L93 Difference]: Finished difference Result 367 states and 1038 transitions. [2022-01-18 05:14:02,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:14:02,985 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:14:02,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:14:02,986 INFO L225 Difference]: With dead ends: 367 [2022-01-18 05:14:02,986 INFO L226 Difference]: Without dead ends: 367 [2022-01-18 05:14:02,986 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-01-18 05:14:02,986 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 57 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:14:02,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 107 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:14:02,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2022-01-18 05:14:02,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 220. [2022-01-18 05:14:02,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 2.9771689497716896) internal successors, (652), 219 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:02,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 652 transitions. [2022-01-18 05:14:02,989 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 652 transitions. Word has length 19 [2022-01-18 05:14:02,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:14:02,989 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 652 transitions. [2022-01-18 05:14:02,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:02,989 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 652 transitions. [2022-01-18 05:14:02,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:14:02,989 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:14:02,989 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:14:03,004 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (198)] Ended with exit code 0 [2022-01-18 05:14:03,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 198 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable377 [2022-01-18 05:14:03,189 INFO L402 AbstractCegarLoop]: === Iteration 379 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:14:03,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:14:03,190 INFO L85 PathProgramCache]: Analyzing trace with hash -90863880, now seen corresponding path program 84 times [2022-01-18 05:14:03,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:14:03,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032358062] [2022-01-18 05:14:03,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:14:03,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:14:03,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:14:03,225 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:03,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:14:03,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032358062] [2022-01-18 05:14:03,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032358062] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:14:03,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312059425] [2022-01-18 05:14:03,225 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 05:14:03,225 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:14:03,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:14:03,226 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) [2022-01-18 05:14:03,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (199)] Waiting until timeout for monitored process [2022-01-18 05:14:03,248 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 05:14:03,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:14:03,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:14:03,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:14:03,322 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:03,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:14:03,381 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:03,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312059425] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:14:03,381 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:14:03,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-01-18 05:14:03,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933226627] [2022-01-18 05:14:03,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:14:03,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 05:14:03,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:14:03,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 05:14:03,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:14:03,381 INFO L87 Difference]: Start difference. First operand 220 states and 652 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:03,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:14:03,477 INFO L93 Difference]: Finished difference Result 334 states and 918 transitions. [2022-01-18 05:14:03,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:14:03,478 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:14:03,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:14:03,478 INFO L225 Difference]: With dead ends: 334 [2022-01-18 05:14:03,478 INFO L226 Difference]: Without dead ends: 326 [2022-01-18 05:14:03,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2022-01-18 05:14:03,478 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 92 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:14:03,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 78 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:14:03,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2022-01-18 05:14:03,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 213. [2022-01-18 05:14:03,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 2.9858490566037736) internal successors, (633), 212 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:03,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 633 transitions. [2022-01-18 05:14:03,481 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 633 transitions. Word has length 19 [2022-01-18 05:14:03,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:14:03,481 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 633 transitions. [2022-01-18 05:14:03,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:03,481 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 633 transitions. [2022-01-18 05:14:03,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:14:03,481 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:14:03,481 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:14:03,496 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (199)] Ended with exit code 0 [2022-01-18 05:14:03,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 199 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable378 [2022-01-18 05:14:03,682 INFO L402 AbstractCegarLoop]: === Iteration 380 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:14:03,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:14:03,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1276256854, now seen corresponding path program 85 times [2022-01-18 05:14:03,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:14:03,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292977087] [2022-01-18 05:14:03,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:14:03,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:14:03,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:14:03,716 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:03,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:14:03,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292977087] [2022-01-18 05:14:03,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292977087] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:14:03,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834859437] [2022-01-18 05:14:03,716 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 05:14:03,716 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:14:03,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:14:03,717 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) [2022-01-18 05:14:03,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (200)] Waiting until timeout for monitored process [2022-01-18 05:14:03,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:14:03,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:14:03,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:14:03,817 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:03,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:14:03,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:03,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834859437] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:14:03,879 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:14:03,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-01-18 05:14:03,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202258744] [2022-01-18 05:14:03,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:14:03,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 05:14:03,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:14:03,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 05:14:03,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:14:03,879 INFO L87 Difference]: Start difference. First operand 213 states and 633 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:03,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:14:03,980 INFO L93 Difference]: Finished difference Result 315 states and 891 transitions. [2022-01-18 05:14:03,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:14:03,981 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:14:03,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:14:03,981 INFO L225 Difference]: With dead ends: 315 [2022-01-18 05:14:03,981 INFO L226 Difference]: Without dead ends: 306 [2022-01-18 05:14:03,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2022-01-18 05:14:03,981 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 67 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:14:03,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 82 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:14:03,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2022-01-18 05:14:03,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 213. [2022-01-18 05:14:03,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 2.9669811320754715) internal successors, (629), 212 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:03,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 629 transitions. [2022-01-18 05:14:03,984 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 629 transitions. Word has length 19 [2022-01-18 05:14:03,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:14:03,984 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 629 transitions. [2022-01-18 05:14:03,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:03,984 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 629 transitions. [2022-01-18 05:14:03,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:14:03,984 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:14:03,984 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:14:03,999 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (200)] Ended with exit code 0 [2022-01-18 05:14:04,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable379,200 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:14:04,185 INFO L402 AbstractCegarLoop]: === Iteration 381 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:14:04,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:14:04,185 INFO L85 PathProgramCache]: Analyzing trace with hash -677911240, now seen corresponding path program 85 times [2022-01-18 05:14:04,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:14:04,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579101676] [2022-01-18 05:14:04,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:14:04,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:14:04,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:14:04,224 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:04,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:14:04,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579101676] [2022-01-18 05:14:04,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579101676] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:14:04,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111490311] [2022-01-18 05:14:04,225 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 05:14:04,225 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:14:04,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:14:04,226 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) [2022-01-18 05:14:04,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (201)] Waiting until timeout for monitored process [2022-01-18 05:14:04,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:14:04,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:14:04,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:14:04,329 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:04,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:14:04,398 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:04,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111490311] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:14:04,399 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:14:04,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-01-18 05:14:04,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4292296] [2022-01-18 05:14:04,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:14:04,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 05:14:04,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:14:04,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 05:14:04,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:14:04,399 INFO L87 Difference]: Start difference. First operand 213 states and 629 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:04,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:14:04,505 INFO L93 Difference]: Finished difference Result 302 states and 860 transitions. [2022-01-18 05:14:04,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:14:04,505 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:14:04,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:14:04,506 INFO L225 Difference]: With dead ends: 302 [2022-01-18 05:14:04,506 INFO L226 Difference]: Without dead ends: 302 [2022-01-18 05:14:04,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-01-18 05:14:04,506 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 63 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:14:04,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 84 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:14:04,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2022-01-18 05:14:04,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 209. [2022-01-18 05:14:04,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 2.9663461538461537) internal successors, (617), 208 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:04,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 617 transitions. [2022-01-18 05:14:04,508 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 617 transitions. Word has length 19 [2022-01-18 05:14:04,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:14:04,508 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 617 transitions. [2022-01-18 05:14:04,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:04,509 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 617 transitions. [2022-01-18 05:14:04,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:14:04,509 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:14:04,509 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:14:04,524 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (201)] Ended with exit code 0 [2022-01-18 05:14:04,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 201 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable380 [2022-01-18 05:14:04,709 INFO L402 AbstractCegarLoop]: === Iteration 382 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:14:04,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:14:04,709 INFO L85 PathProgramCache]: Analyzing trace with hash -337284394, now seen corresponding path program 86 times [2022-01-18 05:14:04,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:14:04,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117219431] [2022-01-18 05:14:04,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:14:04,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:14:04,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:14:04,741 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:04,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:14:04,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117219431] [2022-01-18 05:14:04,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117219431] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:14:04,742 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:14:04,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:14:04,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049733495] [2022-01-18 05:14:04,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:14:04,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:14:04,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:14:04,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:14:04,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:14:04,742 INFO L87 Difference]: Start difference. First operand 209 states and 617 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:04,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:14:04,842 INFO L93 Difference]: Finished difference Result 353 states and 973 transitions. [2022-01-18 05:14:04,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:14:04,842 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:14:04,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:14:04,843 INFO L225 Difference]: With dead ends: 353 [2022-01-18 05:14:04,843 INFO L226 Difference]: Without dead ends: 347 [2022-01-18 05:14:04,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:14:04,843 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 73 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:14:04,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 50 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:14:04,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2022-01-18 05:14:04,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 219. [2022-01-18 05:14:04,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 2.944954128440367) internal successors, (642), 218 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:04,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 642 transitions. [2022-01-18 05:14:04,846 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 642 transitions. Word has length 19 [2022-01-18 05:14:04,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:14:04,846 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 642 transitions. [2022-01-18 05:14:04,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:04,847 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 642 transitions. [2022-01-18 05:14:04,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:14:04,847 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:14:04,847 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:14:04,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable381 [2022-01-18 05:14:04,847 INFO L402 AbstractCegarLoop]: === Iteration 383 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:14:04,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:14:04,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1669838332, now seen corresponding path program 87 times [2022-01-18 05:14:04,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:14:04,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429422807] [2022-01-18 05:14:04,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:14:04,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:14:04,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:14:04,883 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:04,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:14:04,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429422807] [2022-01-18 05:14:04,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429422807] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:14:04,883 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:14:04,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:14:04,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086549489] [2022-01-18 05:14:04,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:14:04,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:14:04,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:14:04,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:14:04,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:14:04,884 INFO L87 Difference]: Start difference. First operand 219 states and 642 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:04,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:14:04,981 INFO L93 Difference]: Finished difference Result 317 states and 890 transitions. [2022-01-18 05:14:04,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:14:04,981 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:14:04,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:14:04,982 INFO L225 Difference]: With dead ends: 317 [2022-01-18 05:14:04,982 INFO L226 Difference]: Without dead ends: 306 [2022-01-18 05:14:04,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:14:04,982 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 56 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:14:04,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 49 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:14:04,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2022-01-18 05:14:04,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 209. [2022-01-18 05:14:04,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 2.9615384615384617) internal successors, (616), 208 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:04,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 616 transitions. [2022-01-18 05:14:04,985 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 616 transitions. Word has length 19 [2022-01-18 05:14:04,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:14:04,985 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 616 transitions. [2022-01-18 05:14:04,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:04,985 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 616 transitions. [2022-01-18 05:14:04,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:14:04,985 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:14:04,985 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:14:04,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable382 [2022-01-18 05:14:04,985 INFO L402 AbstractCegarLoop]: === Iteration 384 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:14:04,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:14:04,992 INFO L85 PathProgramCache]: Analyzing trace with hash -255395300, now seen corresponding path program 86 times [2022-01-18 05:14:04,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:14:04,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528393089] [2022-01-18 05:14:04,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:14:04,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:14:04,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:14:05,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:05,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:14:05,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528393089] [2022-01-18 05:14:05,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528393089] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:14:05,031 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:14:05,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:14:05,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923072984] [2022-01-18 05:14:05,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:14:05,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:14:05,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:14:05,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:14:05,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:14:05,031 INFO L87 Difference]: Start difference. First operand 209 states and 616 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:05,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:14:05,127 INFO L93 Difference]: Finished difference Result 353 states and 981 transitions. [2022-01-18 05:14:05,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:14:05,127 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:14:05,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:14:05,128 INFO L225 Difference]: With dead ends: 353 [2022-01-18 05:14:05,128 INFO L226 Difference]: Without dead ends: 347 [2022-01-18 05:14:05,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:14:05,128 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 64 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:14:05,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 67 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:14:05,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2022-01-18 05:14:05,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 221. [2022-01-18 05:14:05,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 2.9681818181818183) internal successors, (653), 220 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:05,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 653 transitions. [2022-01-18 05:14:05,131 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 653 transitions. Word has length 19 [2022-01-18 05:14:05,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:14:05,131 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 653 transitions. [2022-01-18 05:14:05,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:05,131 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 653 transitions. [2022-01-18 05:14:05,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:14:05,132 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:14:05,132 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:14:05,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable383 [2022-01-18 05:14:05,132 INFO L402 AbstractCegarLoop]: === Iteration 385 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:14:05,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:14:05,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1877701344, now seen corresponding path program 87 times [2022-01-18 05:14:05,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:14:05,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832501901] [2022-01-18 05:14:05,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:14:05,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:14:05,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:14:05,172 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:05,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:14:05,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832501901] [2022-01-18 05:14:05,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832501901] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:14:05,172 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:14:05,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:14:05,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622286659] [2022-01-18 05:14:05,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:14:05,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:14:05,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:14:05,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:14:05,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:14:05,173 INFO L87 Difference]: Start difference. First operand 221 states and 653 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:05,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:14:05,269 INFO L93 Difference]: Finished difference Result 331 states and 944 transitions. [2022-01-18 05:14:05,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:14:05,270 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:14:05,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:14:05,270 INFO L225 Difference]: With dead ends: 331 [2022-01-18 05:14:05,270 INFO L226 Difference]: Without dead ends: 331 [2022-01-18 05:14:05,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:14:05,271 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 48 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:14:05,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 69 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:14:05,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2022-01-18 05:14:05,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 208. [2022-01-18 05:14:05,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 2.9613526570048307) internal successors, (613), 207 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:05,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 613 transitions. [2022-01-18 05:14:05,273 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 613 transitions. Word has length 19 [2022-01-18 05:14:05,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:14:05,273 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 613 transitions. [2022-01-18 05:14:05,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:05,273 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 613 transitions. [2022-01-18 05:14:05,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:14:05,274 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:14:05,274 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:14:05,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable384 [2022-01-18 05:14:05,274 INFO L402 AbstractCegarLoop]: === Iteration 386 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:14:05,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:14:05,274 INFO L85 PathProgramCache]: Analyzing trace with hash 541424188, now seen corresponding path program 88 times [2022-01-18 05:14:05,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:14:05,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66676760] [2022-01-18 05:14:05,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:14:05,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:14:05,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:14:05,301 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:05,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:14:05,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66676760] [2022-01-18 05:14:05,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66676760] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:14:05,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:14:05,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:14:05,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219266750] [2022-01-18 05:14:05,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:14:05,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:14:05,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:14:05,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:14:05,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:14:05,302 INFO L87 Difference]: Start difference. First operand 208 states and 613 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:05,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:14:05,401 INFO L93 Difference]: Finished difference Result 292 states and 822 transitions. [2022-01-18 05:14:05,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:14:05,401 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:14:05,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:14:05,401 INFO L225 Difference]: With dead ends: 292 [2022-01-18 05:14:05,401 INFO L226 Difference]: Without dead ends: 280 [2022-01-18 05:14:05,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:14:05,402 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 56 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:14:05,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 56 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:14:05,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2022-01-18 05:14:05,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 210. [2022-01-18 05:14:05,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 209 states have (on average 2.9473684210526314) internal successors, (616), 209 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:05,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 616 transitions. [2022-01-18 05:14:05,404 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 616 transitions. Word has length 19 [2022-01-18 05:14:05,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:14:05,404 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 616 transitions. [2022-01-18 05:14:05,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:05,404 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 616 transitions. [2022-01-18 05:14:05,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:14:05,404 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:14:05,404 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:14:05,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable385 [2022-01-18 05:14:05,405 INFO L402 AbstractCegarLoop]: === Iteration 387 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:14:05,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:14:05,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1822373720, now seen corresponding path program 89 times [2022-01-18 05:14:05,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:14:05,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141073646] [2022-01-18 05:14:05,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:14:05,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:14:05,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:14:05,435 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:05,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:14:05,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141073646] [2022-01-18 05:14:05,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141073646] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:14:05,435 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:14:05,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:14:05,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809487919] [2022-01-18 05:14:05,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:14:05,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:14:05,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:14:05,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:14:05,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:14:05,435 INFO L87 Difference]: Start difference. First operand 210 states and 616 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:05,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:14:05,541 INFO L93 Difference]: Finished difference Result 280 states and 784 transitions. [2022-01-18 05:14:05,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:14:05,542 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:14:05,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:14:05,542 INFO L225 Difference]: With dead ends: 280 [2022-01-18 05:14:05,542 INFO L226 Difference]: Without dead ends: 274 [2022-01-18 05:14:05,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:14:05,542 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 60 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:14:05,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 52 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:14:05,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-01-18 05:14:05,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 220. [2022-01-18 05:14:05,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 2.9269406392694064) internal successors, (641), 219 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:05,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 641 transitions. [2022-01-18 05:14:05,545 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 641 transitions. Word has length 19 [2022-01-18 05:14:05,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:14:05,545 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 641 transitions. [2022-01-18 05:14:05,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:05,545 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 641 transitions. [2022-01-18 05:14:05,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:14:05,545 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:14:05,545 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:14:05,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable386 [2022-01-18 05:14:05,545 INFO L402 AbstractCegarLoop]: === Iteration 388 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:14:05,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:14:05,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1140039638, now seen corresponding path program 90 times [2022-01-18 05:14:05,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:14:05,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784044284] [2022-01-18 05:14:05,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:14:05,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:14:05,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:14:05,575 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:05,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:14:05,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784044284] [2022-01-18 05:14:05,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784044284] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:14:05,575 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:14:05,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:14:05,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232419082] [2022-01-18 05:14:05,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:14:05,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:14:05,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:14:05,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:14:05,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:14:05,575 INFO L87 Difference]: Start difference. First operand 220 states and 641 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:05,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:14:05,664 INFO L93 Difference]: Finished difference Result 244 states and 701 transitions. [2022-01-18 05:14:05,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:14:05,665 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:14:05,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:14:05,665 INFO L225 Difference]: With dead ends: 244 [2022-01-18 05:14:05,665 INFO L226 Difference]: Without dead ends: 231 [2022-01-18 05:14:05,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:14:05,665 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 44 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 05:14:05,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 40 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 05:14:05,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-01-18 05:14:05,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 208. [2022-01-18 05:14:05,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 2.9565217391304346) internal successors, (612), 207 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:05,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 612 transitions. [2022-01-18 05:14:05,668 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 612 transitions. Word has length 19 [2022-01-18 05:14:05,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:14:05,668 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 612 transitions. [2022-01-18 05:14:05,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:05,668 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 612 transitions. [2022-01-18 05:14:05,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:14:05,668 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:14:05,668 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:14:05,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable387 [2022-01-18 05:14:05,668 INFO L402 AbstractCegarLoop]: === Iteration 389 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:14:05,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:14:05,668 INFO L85 PathProgramCache]: Analyzing trace with hash 856518288, now seen corresponding path program 88 times [2022-01-18 05:14:05,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:14:05,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846086977] [2022-01-18 05:14:05,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:14:05,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:14:05,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:14:05,698 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:05,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:14:05,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846086977] [2022-01-18 05:14:05,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846086977] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:14:05,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:14:05,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:14:05,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946603178] [2022-01-18 05:14:05,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:14:05,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:14:05,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:14:05,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:14:05,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:14:05,699 INFO L87 Difference]: Start difference. First operand 208 states and 612 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:05,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:14:05,772 INFO L93 Difference]: Finished difference Result 277 states and 780 transitions. [2022-01-18 05:14:05,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:14:05,772 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:14:05,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:14:05,773 INFO L225 Difference]: With dead ends: 277 [2022-01-18 05:14:05,773 INFO L226 Difference]: Without dead ends: 265 [2022-01-18 05:14:05,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:14:05,773 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 55 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:14:05,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 48 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:14:05,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2022-01-18 05:14:05,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 208. [2022-01-18 05:14:05,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 2.9516908212560384) internal successors, (611), 207 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:05,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 611 transitions. [2022-01-18 05:14:05,775 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 611 transitions. Word has length 19 [2022-01-18 05:14:05,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:14:05,775 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 611 transitions. [2022-01-18 05:14:05,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:05,775 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 611 transitions. [2022-01-18 05:14:05,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:14:05,776 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:14:05,776 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:14:05,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable388 [2022-01-18 05:14:05,776 INFO L402 AbstractCegarLoop]: === Iteration 390 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:14:05,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:14:05,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1952640244, now seen corresponding path program 89 times [2022-01-18 05:14:05,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:14:05,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382115990] [2022-01-18 05:14:05,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:14:05,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:14:05,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:14:05,810 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:05,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:14:05,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382115990] [2022-01-18 05:14:05,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382115990] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:14:05,810 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:14:05,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:14:05,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453217239] [2022-01-18 05:14:05,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:14:05,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:14:05,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:14:05,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:14:05,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:14:05,811 INFO L87 Difference]: Start difference. First operand 208 states and 611 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:05,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:14:05,890 INFO L93 Difference]: Finished difference Result 281 states and 792 transitions. [2022-01-18 05:14:05,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:14:05,890 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:14:05,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:14:05,890 INFO L225 Difference]: With dead ends: 281 [2022-01-18 05:14:05,890 INFO L226 Difference]: Without dead ends: 275 [2022-01-18 05:14:05,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:14:05,890 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 61 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:14:05,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 47 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:14:05,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2022-01-18 05:14:05,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 214. [2022-01-18 05:14:05,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 2.9342723004694835) internal successors, (625), 213 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:05,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 625 transitions. [2022-01-18 05:14:05,893 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 625 transitions. Word has length 19 [2022-01-18 05:14:05,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:14:05,893 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 625 transitions. [2022-01-18 05:14:05,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:05,893 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 625 transitions. [2022-01-18 05:14:05,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 05:14:05,893 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:14:05,893 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:14:05,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable389 [2022-01-18 05:14:05,893 INFO L402 AbstractCegarLoop]: === Iteration 391 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:14:05,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:14:05,894 INFO L85 PathProgramCache]: Analyzing trace with hash 180456400, now seen corresponding path program 90 times [2022-01-18 05:14:05,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:14:05,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614096090] [2022-01-18 05:14:05,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:14:05,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:14:05,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:14:05,932 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:05,932 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:14:05,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614096090] [2022-01-18 05:14:05,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614096090] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:14:05,932 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:14:05,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 05:14:05,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896684302] [2022-01-18 05:14:05,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:14:05,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:14:05,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:14:05,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:14:05,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:14:05,933 INFO L87 Difference]: Start difference. First operand 214 states and 625 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:06,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:14:06,018 INFO L93 Difference]: Finished difference Result 246 states and 717 transitions. [2022-01-18 05:14:06,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:14:06,019 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 05:14:06,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:14:06,019 INFO L225 Difference]: With dead ends: 246 [2022-01-18 05:14:06,019 INFO L226 Difference]: Without dead ends: 246 [2022-01-18 05:14:06,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:14:06,019 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 38 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:14:06,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 49 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:14:06,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2022-01-18 05:14:06,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 189. [2022-01-18 05:14:06,021 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) [2022-01-18 05:14:06,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 549 transitions. [2022-01-18 05:14:06,021 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 549 transitions. Word has length 19 [2022-01-18 05:14:06,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:14:06,021 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 549 transitions. [2022-01-18 05:14:06,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:06,022 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 549 transitions. [2022-01-18 05:14:06,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:14:06,022 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:14:06,022 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:14:06,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable390 [2022-01-18 05:14:06,022 INFO L402 AbstractCegarLoop]: === Iteration 392 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:14:06,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:14:06,022 INFO L85 PathProgramCache]: Analyzing trace with hash 649098955, now seen corresponding path program 1 times [2022-01-18 05:14:06,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:14:06,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505771985] [2022-01-18 05:14:06,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:14:06,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:14:06,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:14:06,492 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:06,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:14:06,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505771985] [2022-01-18 05:14:06,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505771985] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:14:06,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082123264] [2022-01-18 05:14:06,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:14:06,492 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:14:06,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:14:06,493 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) [2022-01-18 05:14:06,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (202)] Waiting until timeout for monitored process [2022-01-18 05:14:06,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:14:06,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 05:14:06,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:14:07,010 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:14:07,015 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2022-01-18 05:14:08,057 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:14:08,058 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 165 treesize of output 139 [2022-01-18 05:14:08,069 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 113 [2022-01-18 05:14:08,458 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:08,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:14:09,162 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:14:09,163 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 134 treesize of output 122 [2022-01-18 05:14:09,474 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:14:09,475 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 101 treesize of output 95 [2022-01-18 05:14:09,481 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:14:09,481 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 87 treesize of output 81 [2022-01-18 05:14:09,557 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:09,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082123264] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:14:09,557 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:14:09,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:14:09,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123740526] [2022-01-18 05:14:09,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:14:09,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:14:09,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:14:09,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:14:09,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:14:09,558 INFO L87 Difference]: Start difference. First operand 189 states and 549 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:10,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:14:10,390 INFO L93 Difference]: Finished difference Result 632 states and 1763 transitions. [2022-01-18 05:14:10,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-18 05:14:10,390 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:14:10,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:14:10,391 INFO L225 Difference]: With dead ends: 632 [2022-01-18 05:14:10,391 INFO L226 Difference]: Without dead ends: 626 [2022-01-18 05:14:10,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=134, Invalid=1126, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 05:14:10,394 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 113 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 274 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:14:10,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 446 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 423 Invalid, 0 Unknown, 274 Unchecked, 0.2s Time] [2022-01-18 05:14:10,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2022-01-18 05:14:10,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 203. [2022-01-18 05:14:10,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 202 states have (on average 2.891089108910891) internal successors, (584), 202 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) [2022-01-18 05:14:10,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 584 transitions. [2022-01-18 05:14:10,397 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 584 transitions. Word has length 20 [2022-01-18 05:14:10,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:14:10,397 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 584 transitions. [2022-01-18 05:14:10,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:10,398 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 584 transitions. [2022-01-18 05:14:10,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:14:10,398 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:14:10,398 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:14:10,414 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (202)] Ended with exit code 0 [2022-01-18 05:14:10,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable391,202 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:14:10,598 INFO L402 AbstractCegarLoop]: === Iteration 393 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:14:10,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:14:10,598 INFO L85 PathProgramCache]: Analyzing trace with hash 460141835, now seen corresponding path program 2 times [2022-01-18 05:14:10,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:14:10,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309351123] [2022-01-18 05:14:10,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:14:10,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:14:10,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:14:10,984 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:10,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:14:10,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309351123] [2022-01-18 05:14:10,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309351123] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:14:10,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075892201] [2022-01-18 05:14:10,984 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 05:14:10,984 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:14:10,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:14:10,985 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) [2022-01-18 05:14:10,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (203)] Waiting until timeout for monitored process [2022-01-18 05:14:11,011 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:14:11,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:14:11,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-18 05:14:11,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:14:11,544 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:14:11,545 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 122 treesize of output 104 [2022-01-18 05:14:12,776 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:14:12,777 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 205 treesize of output 177 [2022-01-18 05:14:12,780 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 149 [2022-01-18 05:14:13,837 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:13,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:14:14,658 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:14:14,659 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 146 treesize of output 134 [2022-01-18 05:14:15,075 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:14:15,075 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 101 treesize of output 95 [2022-01-18 05:14:15,083 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:14:15,083 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-01-18 05:14:15,131 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:15,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075892201] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:14:15,131 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:14:15,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:14:15,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490872560] [2022-01-18 05:14:15,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:14:15,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:14:15,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:14:15,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:14:15,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:14:15,132 INFO L87 Difference]: Start difference. First operand 203 states and 584 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:15,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:14:15,968 INFO L93 Difference]: Finished difference Result 415 states and 1180 transitions. [2022-01-18 05:14:15,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 05:14:15,968 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:14:15,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:14:15,969 INFO L225 Difference]: With dead ends: 415 [2022-01-18 05:14:15,969 INFO L226 Difference]: Without dead ends: 408 [2022-01-18 05:14:15,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=132, Invalid=1128, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 05:14:15,969 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 47 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 97 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:14:15,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 405 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 291 Invalid, 0 Unknown, 97 Unchecked, 0.1s Time] [2022-01-18 05:14:15,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2022-01-18 05:14:15,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 218. [2022-01-18 05:14:15,972 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) [2022-01-18 05:14:15,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 622 transitions. [2022-01-18 05:14:15,972 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 622 transitions. Word has length 20 [2022-01-18 05:14:15,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:14:15,972 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 622 transitions. [2022-01-18 05:14:15,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:15,972 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 622 transitions. [2022-01-18 05:14:15,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:14:15,972 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:14:15,972 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] [2022-01-18 05:14:15,987 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (203)] Ended with exit code 0 [2022-01-18 05:14:16,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable392,203 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:14:16,173 INFO L402 AbstractCegarLoop]: === Iteration 394 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:14:16,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:14:16,173 INFO L85 PathProgramCache]: Analyzing trace with hash 690724175, now seen corresponding path program 3 times [2022-01-18 05:14:16,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:14:16,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693979736] [2022-01-18 05:14:16,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:14:16,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:14:16,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:14:16,581 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:16,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:14:16,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693979736] [2022-01-18 05:14:16,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693979736] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:14:16,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293408498] [2022-01-18 05:14:16,581 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:14:16,581 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:14:16,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:14:16,582 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) [2022-01-18 05:14:16,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (204)] Waiting until timeout for monitored process [2022-01-18 05:14:16,609 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 05:14:16,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:14:16,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 05:14:16,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:14:17,101 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:14:17,102 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 122 treesize of output 104 [2022-01-18 05:14:17,955 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:14:17,956 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 137 [2022-01-18 05:14:17,958 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 111 [2022-01-18 05:14:18,266 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:18,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:14:18,958 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:14:18,958 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 134 treesize of output 122 [2022-01-18 05:14:19,322 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:14:19,322 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 101 [2022-01-18 05:14:19,327 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:14:19,328 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 85 [2022-01-18 05:14:19,382 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:19,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293408498] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:14:19,382 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:14:19,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:14:19,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032131551] [2022-01-18 05:14:19,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:14:19,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:14:19,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:14:19,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:14:19,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:14:19,383 INFO L87 Difference]: Start difference. First operand 218 states and 622 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:19,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:14:19,958 INFO L93 Difference]: Finished difference Result 425 states and 1194 transitions. [2022-01-18 05:14:19,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 05:14:19,959 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:14:19,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:14:19,959 INFO L225 Difference]: With dead ends: 425 [2022-01-18 05:14:19,959 INFO L226 Difference]: Without dead ends: 422 [2022-01-18 05:14:19,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=127, Invalid=1063, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 05:14:19,960 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 89 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 452 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:14:19,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 382 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 249 Invalid, 0 Unknown, 452 Unchecked, 0.1s Time] [2022-01-18 05:14:19,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-01-18 05:14:19,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 220. [2022-01-18 05:14:19,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 2.867579908675799) internal successors, (628), 219 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:19,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 628 transitions. [2022-01-18 05:14:19,963 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 628 transitions. Word has length 20 [2022-01-18 05:14:19,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:14:19,963 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 628 transitions. [2022-01-18 05:14:19,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:19,963 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 628 transitions. [2022-01-18 05:14:19,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:14:19,963 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:14:19,963 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:14:19,979 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (204)] Ended with exit code 0 [2022-01-18 05:14:20,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable393,204 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:14:20,164 INFO L402 AbstractCegarLoop]: === Iteration 395 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:14:20,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:14:20,164 INFO L85 PathProgramCache]: Analyzing trace with hash -169339647, now seen corresponding path program 4 times [2022-01-18 05:14:20,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:14:20,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016608424] [2022-01-18 05:14:20,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:14:20,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:14:20,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:14:20,599 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:20,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:14:20,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016608424] [2022-01-18 05:14:20,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016608424] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:14:20,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759139593] [2022-01-18 05:14:20,600 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 05:14:20,600 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:14:20,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:14:20,601 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) [2022-01-18 05:14:20,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (205)] Waiting until timeout for monitored process [2022-01-18 05:14:20,624 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 05:14:20,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:14:20,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 05:14:20,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:14:21,052 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:14:21,053 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 122 treesize of output 104 [2022-01-18 05:14:21,978 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:14:21,979 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 132 [2022-01-18 05:14:21,981 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 106 [2022-01-18 05:14:22,251 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:22,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:14:22,965 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:14:22,965 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2022-01-18 05:14:23,344 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:14:23,345 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2022-01-18 05:14:23,351 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:14:23,351 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 93 treesize of output 85 [2022-01-18 05:14:23,412 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:23,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759139593] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:14:23,412 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:14:23,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:14:23,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922212248] [2022-01-18 05:14:23,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:14:23,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:14:23,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:14:23,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:14:23,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:14:23,413 INFO L87 Difference]: Start difference. First operand 220 states and 628 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:23,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:14:23,995 INFO L93 Difference]: Finished difference Result 417 states and 1185 transitions. [2022-01-18 05:14:23,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 05:14:23,995 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:14:23,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:14:23,996 INFO L225 Difference]: With dead ends: 417 [2022-01-18 05:14:23,996 INFO L226 Difference]: Without dead ends: 414 [2022-01-18 05:14:23,996 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=127, Invalid=1063, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 05:14:23,996 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 47 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 120 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:14:23,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 408 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 308 Invalid, 0 Unknown, 120 Unchecked, 0.1s Time] [2022-01-18 05:14:23,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2022-01-18 05:14:23,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 220. [2022-01-18 05:14:23,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 2.867579908675799) internal successors, (628), 219 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:23,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 628 transitions. [2022-01-18 05:14:23,999 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 628 transitions. Word has length 20 [2022-01-18 05:14:23,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:14:23,999 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 628 transitions. [2022-01-18 05:14:23,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:23,999 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 628 transitions. [2022-01-18 05:14:23,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:14:23,999 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:14:24,000 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] [2022-01-18 05:14:24,014 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (205)] Ended with exit code 0 [2022-01-18 05:14:24,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable394,205 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:14:24,200 INFO L402 AbstractCegarLoop]: === Iteration 396 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:14:24,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:14:24,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1780343947, now seen corresponding path program 5 times [2022-01-18 05:14:24,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:14:24,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747448603] [2022-01-18 05:14:24,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:14:24,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:14:24,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:14:24,619 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:24,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:14:24,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747448603] [2022-01-18 05:14:24,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747448603] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:14:24,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091291505] [2022-01-18 05:14:24,620 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 05:14:24,620 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:14:24,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:14:24,621 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) [2022-01-18 05:14:24,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (206)] Waiting until timeout for monitored process [2022-01-18 05:14:24,644 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 05:14:24,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:14:24,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 05:14:24,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:14:24,870 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-01-18 05:14:25,272 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 224 treesize of output 194 [2022-01-18 05:14:25,274 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 194 treesize of output 164 [2022-01-18 05:14:25,980 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:25,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:14:26,614 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:14:26,614 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 121 treesize of output 109 [2022-01-18 05:14:26,900 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 05:14:26,900 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 97 treesize of output 84 [2022-01-18 05:14:26,902 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 65 [2022-01-18 05:14:26,906 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:26,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091291505] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:14:26,907 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:14:26,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-01-18 05:14:26,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835789593] [2022-01-18 05:14:26,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:14:26,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-18 05:14:26,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:14:26,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-18 05:14:26,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=679, Unknown=0, NotChecked=0, Total=756 [2022-01-18 05:14:26,907 INFO L87 Difference]: Start difference. First operand 220 states and 628 transitions. Second operand has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 28 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:31,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:14:31,304 INFO L93 Difference]: Finished difference Result 617 states and 1642 transitions. [2022-01-18 05:14:31,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-18 05:14:31,304 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 28 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:14:31,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:14:31,305 INFO L225 Difference]: With dead ends: 617 [2022-01-18 05:14:31,305 INFO L226 Difference]: Without dead ends: 587 [2022-01-18 05:14:31,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=337, Invalid=1825, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 05:14:31,305 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 368 mSDsluCounter, 922 mSDsCounter, 0 mSdLazyCounter, 1143 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 1197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 05:14:31,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [368 Valid, 420 Invalid, 1197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1143 Invalid, 0 Unknown, 4 Unchecked, 0.6s Time] [2022-01-18 05:14:31,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2022-01-18 05:14:31,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 236. [2022-01-18 05:14:31,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 235 states have (on average 2.9106382978723406) internal successors, (684), 235 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:31,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 684 transitions. [2022-01-18 05:14:31,309 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 684 transitions. Word has length 20 [2022-01-18 05:14:31,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:14:31,309 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 684 transitions. [2022-01-18 05:14:31,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 28 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:31,309 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 684 transitions. [2022-01-18 05:14:31,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:14:31,309 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:14:31,309 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:14:31,324 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (206)] Ended with exit code 0 [2022-01-18 05:14:31,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable395,206 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:14:31,510 INFO L402 AbstractCegarLoop]: === Iteration 397 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:14:31,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:14:31,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1802940495, now seen corresponding path program 6 times [2022-01-18 05:14:31,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:14:31,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509657630] [2022-01-18 05:14:31,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:14:31,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:14:31,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:14:31,948 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:31,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:14:31,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509657630] [2022-01-18 05:14:31,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509657630] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:14:31,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81621788] [2022-01-18 05:14:31,949 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 05:14:31,949 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:14:31,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:14:31,949 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) [2022-01-18 05:14:31,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (207)] Waiting until timeout for monitored process [2022-01-18 05:14:31,973 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 05:14:31,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:14:31,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-18 05:14:31,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:14:32,566 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:14:32,566 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 147 treesize of output 127 [2022-01-18 05:14:33,827 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:14:33,827 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 313 treesize of output 273 [2022-01-18 05:14:33,841 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 273 treesize of output 233 [2022-01-18 05:14:35,094 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:35,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:14:36,152 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:14:36,153 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 226 treesize of output 214 [2022-01-18 05:14:36,998 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:14:36,998 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-01-18 05:14:37,003 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:14:37,003 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 87 treesize of output 81 [2022-01-18 05:14:37,056 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:37,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81621788] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:14:37,057 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:14:37,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:14:37,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717145688] [2022-01-18 05:14:37,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:14:37,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:14:37,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:14:37,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:14:37,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:14:37,057 INFO L87 Difference]: Start difference. First operand 236 states and 684 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:37,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:14:37,576 INFO L93 Difference]: Finished difference Result 430 states and 1236 transitions. [2022-01-18 05:14:37,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 05:14:37,577 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:14:37,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:14:37,577 INFO L225 Difference]: With dead ends: 430 [2022-01-18 05:14:37,578 INFO L226 Difference]: Without dead ends: 423 [2022-01-18 05:14:37,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=104, Invalid=708, Unknown=0, NotChecked=0, Total=812 [2022-01-18 05:14:37,578 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 72 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 272 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:14:37,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 301 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 372 Invalid, 0 Unknown, 272 Unchecked, 0.2s Time] [2022-01-18 05:14:37,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-01-18 05:14:37,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 247. [2022-01-18 05:14:37,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 246 states have (on average 2.894308943089431) internal successors, (712), 246 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:37,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 712 transitions. [2022-01-18 05:14:37,581 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 712 transitions. Word has length 20 [2022-01-18 05:14:37,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:14:37,581 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 712 transitions. [2022-01-18 05:14:37,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:37,581 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 712 transitions. [2022-01-18 05:14:37,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:14:37,582 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:14:37,582 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:14:37,597 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (207)] Ended with exit code 0 [2022-01-18 05:14:37,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 207 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable396 [2022-01-18 05:14:37,782 INFO L402 AbstractCegarLoop]: === Iteration 398 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:14:37,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:14:37,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1920571995, now seen corresponding path program 7 times [2022-01-18 05:14:37,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:14:37,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163250769] [2022-01-18 05:14:37,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:14:37,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:14:37,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:14:38,106 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:38,106 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:14:38,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163250769] [2022-01-18 05:14:38,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163250769] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:14:38,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089013419] [2022-01-18 05:14:38,106 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 05:14:38,106 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:14:38,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:14:38,107 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) [2022-01-18 05:14:38,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (208)] Waiting until timeout for monitored process [2022-01-18 05:14:38,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:14:38,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-18 05:14:38,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:14:38,601 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:14:38,602 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 122 treesize of output 104 [2022-01-18 05:14:39,748 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:14:39,749 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 233 treesize of output 203 [2022-01-18 05:14:39,751 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 203 treesize of output 173 [2022-01-18 05:14:40,967 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:40,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:14:41,830 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:14:41,830 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 146 treesize of output 134 [2022-01-18 05:14:42,299 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:14:42,299 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 109 treesize of output 101 [2022-01-18 05:14:42,304 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:14:42,305 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 85 [2022-01-18 05:14:42,362 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:42,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2089013419] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:14:42,362 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:14:42,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:14:42,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551236710] [2022-01-18 05:14:42,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:14:42,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:14:42,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:14:42,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:14:42,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:14:42,363 INFO L87 Difference]: Start difference. First operand 247 states and 712 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:42,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:14:42,551 INFO L93 Difference]: Finished difference Result 421 states and 1222 transitions. [2022-01-18 05:14:42,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 05:14:42,551 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:14:42,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:14:42,552 INFO L225 Difference]: With dead ends: 421 [2022-01-18 05:14:42,552 INFO L226 Difference]: Without dead ends: 414 [2022-01-18 05:14:42,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=91, Invalid=665, Unknown=0, NotChecked=0, Total=756 [2022-01-18 05:14:42,552 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 51 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 59 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:14:42,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 259 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 225 Invalid, 0 Unknown, 59 Unchecked, 0.1s Time] [2022-01-18 05:14:42,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2022-01-18 05:14:42,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 250. [2022-01-18 05:14:42,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 249 states have (on average 2.887550200803213) internal successors, (719), 249 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:42,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 719 transitions. [2022-01-18 05:14:42,556 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 719 transitions. Word has length 20 [2022-01-18 05:14:42,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:14:42,556 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 719 transitions. [2022-01-18 05:14:42,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:42,556 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 719 transitions. [2022-01-18 05:14:42,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:14:42,556 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:14:42,556 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:14:42,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (208)] Forceful destruction successful, exit code 0 [2022-01-18 05:14:42,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 208 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable397 [2022-01-18 05:14:42,756 INFO L402 AbstractCegarLoop]: === Iteration 399 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:14:42,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:14:42,757 INFO L85 PathProgramCache]: Analyzing trace with hash -947641373, now seen corresponding path program 8 times [2022-01-18 05:14:42,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:14:42,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669429171] [2022-01-18 05:14:42,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:14:42,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:14:42,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:14:43,163 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:43,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:14:43,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669429171] [2022-01-18 05:14:43,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669429171] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:14:43,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550216128] [2022-01-18 05:14:43,164 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 05:14:43,164 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:14:43,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:14:43,164 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) [2022-01-18 05:14:43,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (209)] Waiting until timeout for monitored process [2022-01-18 05:14:43,190 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:14:43,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:14:43,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 05:14:43,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:14:43,617 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:14:43,617 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 122 treesize of output 104 [2022-01-18 05:14:44,792 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:14:44,793 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 180 treesize of output 156 [2022-01-18 05:14:44,796 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 156 treesize of output 132 [2022-01-18 05:14:45,053 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:45,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:14:45,740 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:14:45,740 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 133 treesize of output 121 [2022-01-18 05:14:46,159 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:14:46,159 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-01-18 05:14:46,164 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:14:46,165 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-01-18 05:14:46,217 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:46,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550216128] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:14:46,218 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:14:46,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:14:46,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109201704] [2022-01-18 05:14:46,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:14:46,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:14:46,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:14:46,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:14:46,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:14:46,218 INFO L87 Difference]: Start difference. First operand 250 states and 719 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:46,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:14:46,409 INFO L93 Difference]: Finished difference Result 428 states and 1235 transitions. [2022-01-18 05:14:46,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 05:14:46,409 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:14:46,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:14:46,410 INFO L225 Difference]: With dead ends: 428 [2022-01-18 05:14:46,410 INFO L226 Difference]: Without dead ends: 421 [2022-01-18 05:14:46,410 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=92, Invalid=664, Unknown=0, NotChecked=0, Total=756 [2022-01-18 05:14:46,410 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 60 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 160 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:14:46,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 299 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 294 Invalid, 0 Unknown, 160 Unchecked, 0.1s Time] [2022-01-18 05:14:46,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2022-01-18 05:14:46,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 249. [2022-01-18 05:14:46,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 248 states have (on average 2.8951612903225805) internal successors, (718), 248 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:46,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 718 transitions. [2022-01-18 05:14:46,413 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 718 transitions. Word has length 20 [2022-01-18 05:14:46,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:14:46,413 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 718 transitions. [2022-01-18 05:14:46,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:46,413 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 718 transitions. [2022-01-18 05:14:46,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:14:46,414 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:14:46,414 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:14:46,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (209)] Forceful destruction successful, exit code 0 [2022-01-18 05:14:46,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 209 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable398 [2022-01-18 05:14:46,614 INFO L402 AbstractCegarLoop]: === Iteration 400 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:14:46,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:14:46,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1572237365, now seen corresponding path program 9 times [2022-01-18 05:14:46,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:14:46,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545322216] [2022-01-18 05:14:46,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:14:46,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:14:46,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:14:46,988 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:46,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:14:46,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545322216] [2022-01-18 05:14:46,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545322216] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:14:46,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029302578] [2022-01-18 05:14:46,989 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:14:46,989 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:14:46,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:14:46,990 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) [2022-01-18 05:14:46,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (210)] Waiting until timeout for monitored process [2022-01-18 05:14:47,015 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 05:14:47,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:14:47,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-18 05:14:47,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:14:47,607 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:14:47,608 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2022-01-18 05:14:49,007 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:14:49,008 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 248 treesize of output 212 [2022-01-18 05:14:49,011 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 212 treesize of output 176 [2022-01-18 05:14:49,600 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:49,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:14:50,463 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:14:50,463 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 166 treesize of output 150 [2022-01-18 05:14:50,993 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:14:50,994 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 101 [2022-01-18 05:14:50,999 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:14:50,999 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2022-01-18 05:14:51,052 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:51,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029302578] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:14:51,052 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:14:51,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:14:51,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971275563] [2022-01-18 05:14:51,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:14:51,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:14:51,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:14:51,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:14:51,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=625, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:14:51,053 INFO L87 Difference]: Start difference. First operand 249 states and 718 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:51,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:14:51,945 INFO L93 Difference]: Finished difference Result 415 states and 1175 transitions. [2022-01-18 05:14:51,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 05:14:51,945 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:14:51,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:14:51,946 INFO L225 Difference]: With dead ends: 415 [2022-01-18 05:14:51,946 INFO L226 Difference]: Without dead ends: 408 [2022-01-18 05:14:51,946 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=149, Invalid=1041, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 05:14:51,946 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 117 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 407 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:14:51,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 299 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 327 Invalid, 0 Unknown, 407 Unchecked, 0.1s Time] [2022-01-18 05:14:51,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2022-01-18 05:14:51,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 253. [2022-01-18 05:14:51,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 252 states have (on average 2.880952380952381) internal successors, (726), 252 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:51,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 726 transitions. [2022-01-18 05:14:51,949 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 726 transitions. Word has length 20 [2022-01-18 05:14:51,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:14:51,949 INFO L470 AbstractCegarLoop]: Abstraction has 253 states and 726 transitions. [2022-01-18 05:14:51,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:51,949 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 726 transitions. [2022-01-18 05:14:51,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:14:51,950 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:14:51,950 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:14:51,964 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (210)] Ended with exit code 0 [2022-01-18 05:14:52,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 210 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable399 [2022-01-18 05:14:52,150 INFO L402 AbstractCegarLoop]: === Iteration 401 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:14:52,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:14:52,150 INFO L85 PathProgramCache]: Analyzing trace with hash 728264775, now seen corresponding path program 10 times [2022-01-18 05:14:52,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:14:52,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814327252] [2022-01-18 05:14:52,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:14:52,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:14:52,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:14:52,562 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:52,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:14:52,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814327252] [2022-01-18 05:14:52,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814327252] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:14:52,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581992833] [2022-01-18 05:14:52,562 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 05:14:52,562 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:14:52,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:14:52,563 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) [2022-01-18 05:14:52,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (211)] Waiting until timeout for monitored process [2022-01-18 05:14:52,587 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 05:14:52,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:14:52,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 05:14:52,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:14:53,082 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:14:53,082 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 102 [2022-01-18 05:14:53,604 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:14:53,605 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 222 treesize of output 192 [2022-01-18 05:14:53,607 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 192 treesize of output 162 [2022-01-18 05:14:54,300 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:54,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:14:54,881 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:14:54,881 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 135 [2022-01-18 05:14:55,344 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:14:55,345 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-01-18 05:14:55,349 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:14:55,350 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 87 treesize of output 81 [2022-01-18 05:14:55,398 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:55,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581992833] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:14:55,398 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:14:55,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:14:55,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283465691] [2022-01-18 05:14:55,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:14:55,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:14:55,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:14:55,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:14:55,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:14:55,399 INFO L87 Difference]: Start difference. First operand 253 states and 726 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:56,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:14:56,456 INFO L93 Difference]: Finished difference Result 444 states and 1241 transitions. [2022-01-18 05:14:56,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 05:14:56,456 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:14:56,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:14:56,457 INFO L225 Difference]: With dead ends: 444 [2022-01-18 05:14:56,457 INFO L226 Difference]: Without dead ends: 437 [2022-01-18 05:14:56,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=157, Invalid=1033, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 05:14:56,457 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 99 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 233 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:14:56,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 295 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 391 Invalid, 0 Unknown, 233 Unchecked, 0.2s Time] [2022-01-18 05:14:56,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2022-01-18 05:14:56,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 255. [2022-01-18 05:14:56,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 2.877952755905512) internal successors, (731), 254 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:56,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 731 transitions. [2022-01-18 05:14:56,460 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 731 transitions. Word has length 20 [2022-01-18 05:14:56,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:14:56,460 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 731 transitions. [2022-01-18 05:14:56,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:14:56,461 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 731 transitions. [2022-01-18 05:14:56,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:14:56,461 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:14:56,461 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:14:56,476 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (211)] Ended with exit code 0 [2022-01-18 05:14:56,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 211 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable400 [2022-01-18 05:14:56,661 INFO L402 AbstractCegarLoop]: === Iteration 402 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:14:56,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:14:56,661 INFO L85 PathProgramCache]: Analyzing trace with hash 750861323, now seen corresponding path program 11 times [2022-01-18 05:14:56,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:14:56,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855249349] [2022-01-18 05:14:56,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:14:56,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:14:56,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:14:57,000 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:57,000 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:14:57,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855249349] [2022-01-18 05:14:57,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855249349] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:14:57,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413567317] [2022-01-18 05:14:57,000 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 05:14:57,001 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:14:57,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:14:57,001 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) [2022-01-18 05:14:57,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (212)] Waiting until timeout for monitored process [2022-01-18 05:14:57,026 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 05:14:57,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:14:57,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 05:14:57,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:14:57,287 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2022-01-18 05:14:57,522 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 219 treesize of output 189 [2022-01-18 05:14:57,524 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 189 treesize of output 159 [2022-01-18 05:14:58,171 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:58,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:14:58,670 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:14:58,670 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2022-01-18 05:14:59,010 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 05:14:59,010 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 78 [2022-01-18 05:14:59,012 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 61 [2022-01-18 05:14:59,016 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:14:59,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413567317] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:14:59,016 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:14:59,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-01-18 05:14:59,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512261804] [2022-01-18 05:14:59,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:14:59,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-18 05:14:59,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:14:59,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-18 05:14:59,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=667, Unknown=0, NotChecked=0, Total=756 [2022-01-18 05:14:59,017 INFO L87 Difference]: Start difference. First operand 255 states and 731 transitions. Second operand has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 28 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:15:01,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:15:01,034 INFO L93 Difference]: Finished difference Result 530 states and 1467 transitions. [2022-01-18 05:15:01,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-18 05:15:01,035 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 28 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:15:01,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:15:01,035 INFO L225 Difference]: With dead ends: 530 [2022-01-18 05:15:01,035 INFO L226 Difference]: Without dead ends: 500 [2022-01-18 05:15:01,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=307, Invalid=1499, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 05:15:01,036 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 221 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 913 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 05:15:01,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [221 Valid, 322 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 913 Invalid, 0 Unknown, 4 Unchecked, 0.5s Time] [2022-01-18 05:15:01,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2022-01-18 05:15:01,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 264. [2022-01-18 05:15:01,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 263 states have (on average 2.9049429657794676) internal successors, (764), 263 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:15:01,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 764 transitions. [2022-01-18 05:15:01,039 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 764 transitions. Word has length 20 [2022-01-18 05:15:01,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:15:01,039 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 764 transitions. [2022-01-18 05:15:01,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 28 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:15:01,039 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 764 transitions. [2022-01-18 05:15:01,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:15:01,039 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:15:01,040 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:15:01,055 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (212)] Ended with exit code 0 [2022-01-18 05:15:01,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable401,212 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:15:01,240 INFO L402 AbstractCegarLoop]: === Iteration 403 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:15:01,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:15:01,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1420531761, now seen corresponding path program 12 times [2022-01-18 05:15:01,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:15:01,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897468867] [2022-01-18 05:15:01,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:15:01,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:15:01,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:15:01,659 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:15:01,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:15:01,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897468867] [2022-01-18 05:15:01,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897468867] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:15:01,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883286963] [2022-01-18 05:15:01,659 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 05:15:01,659 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:15:01,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:15:01,660 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) [2022-01-18 05:15:01,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (213)] Waiting until timeout for monitored process [2022-01-18 05:15:01,685 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 05:15:01,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:15:01,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 05:15:01,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:15:02,195 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:15:02,196 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2022-01-18 05:15:02,719 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:15:02,719 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 221 treesize of output 191 [2022-01-18 05:15:02,722 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 191 treesize of output 161 [2022-01-18 05:15:03,379 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:15:03,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:15:03,974 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:15:03,974 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 148 treesize of output 136 [2022-01-18 05:15:04,361 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:15:04,362 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2022-01-18 05:15:04,367 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:15:04,368 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 85 [2022-01-18 05:15:04,416 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:15:04,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883286963] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:15:04,416 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:15:04,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:15:04,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338369989] [2022-01-18 05:15:04,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:15:04,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:15:04,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:15:04,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:15:04,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=621, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:15:04,417 INFO L87 Difference]: Start difference. First operand 264 states and 764 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:15:05,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:15:05,447 INFO L93 Difference]: Finished difference Result 492 states and 1376 transitions. [2022-01-18 05:15:05,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 05:15:05,447 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:15:05,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:15:05,448 INFO L225 Difference]: With dead ends: 492 [2022-01-18 05:15:05,448 INFO L226 Difference]: Without dead ends: 470 [2022-01-18 05:15:05,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=162, Invalid=1098, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 05:15:05,448 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 126 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 105 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:15:05,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 300 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 410 Invalid, 0 Unknown, 105 Unchecked, 0.2s Time] [2022-01-18 05:15:05,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2022-01-18 05:15:05,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 267. [2022-01-18 05:15:05,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 266 states have (on average 2.898496240601504) internal successors, (771), 266 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:15:05,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 771 transitions. [2022-01-18 05:15:05,452 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 771 transitions. Word has length 20 [2022-01-18 05:15:05,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:15:05,452 INFO L470 AbstractCegarLoop]: Abstraction has 267 states and 771 transitions. [2022-01-18 05:15:05,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:15:05,452 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 771 transitions. [2022-01-18 05:15:05,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:15:05,452 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:15:05,452 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:15:05,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (213)] Forceful destruction successful, exit code 0 [2022-01-18 05:15:05,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable402,213 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:15:05,653 INFO L402 AbstractCegarLoop]: === Iteration 404 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:15:05,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:15:05,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1397935213, now seen corresponding path program 13 times [2022-01-18 05:15:05,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:15:05,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238321390] [2022-01-18 05:15:05,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:15:05,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:15:05,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:15:06,070 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:15:06,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:15:06,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238321390] [2022-01-18 05:15:06,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238321390] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:15:06,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146314902] [2022-01-18 05:15:06,071 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 05:15:06,071 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:15:06,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:15:06,072 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) [2022-01-18 05:15:06,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (214)] Waiting until timeout for monitored process [2022-01-18 05:15:06,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:15:06,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 05:15:06,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:15:06,637 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:15:06,637 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2022-01-18 05:15:07,109 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:15:07,109 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 213 treesize of output 185 [2022-01-18 05:15:07,114 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 185 treesize of output 157 [2022-01-18 05:15:07,751 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:15:07,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:15:08,391 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:15:08,391 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 140 treesize of output 128 [2022-01-18 05:15:08,783 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:15:08,783 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 109 treesize of output 101 [2022-01-18 05:15:08,789 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:15:08,789 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 93 treesize of output 85 [2022-01-18 05:15:08,844 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:15:08,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146314902] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:15:08,844 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:15:08,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:15:08,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270419903] [2022-01-18 05:15:08,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:15:08,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:15:08,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:15:08,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:15:08,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:15:08,845 INFO L87 Difference]: Start difference. First operand 267 states and 771 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:15:10,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:15:10,402 INFO L93 Difference]: Finished difference Result 593 states and 1642 transitions. [2022-01-18 05:15:10,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-18 05:15:10,402 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:15:10,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:15:10,403 INFO L225 Difference]: With dead ends: 593 [2022-01-18 05:15:10,403 INFO L226 Difference]: Without dead ends: 579 [2022-01-18 05:15:10,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 23 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=184, Invalid=1298, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 05:15:10,404 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 109 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 197 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:15:10,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 406 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 392 Invalid, 0 Unknown, 197 Unchecked, 0.2s Time] [2022-01-18 05:15:10,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2022-01-18 05:15:10,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 268. [2022-01-18 05:15:10,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 267 states have (on average 2.898876404494382) internal successors, (774), 267 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:15:10,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 774 transitions. [2022-01-18 05:15:10,408 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 774 transitions. Word has length 20 [2022-01-18 05:15:10,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:15:10,408 INFO L470 AbstractCegarLoop]: Abstraction has 268 states and 774 transitions. [2022-01-18 05:15:10,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:15:10,408 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 774 transitions. [2022-01-18 05:15:10,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:15:10,408 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:15:10,408 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:15:10,423 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (214)] Ended with exit code 0 [2022-01-18 05:15:10,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 214 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable403 [2022-01-18 05:15:10,608 INFO L402 AbstractCegarLoop]: === Iteration 405 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:15:10,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:15:10,609 INFO L85 PathProgramCache]: Analyzing trace with hash -826480407, now seen corresponding path program 14 times [2022-01-18 05:15:10,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:15:10,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166641094] [2022-01-18 05:15:10,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:15:10,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:15:10,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:15:11,002 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:15:11,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:15:11,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166641094] [2022-01-18 05:15:11,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166641094] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:15:11,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565874490] [2022-01-18 05:15:11,002 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 05:15:11,002 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:15:11,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:15:11,003 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) [2022-01-18 05:15:11,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (215)] Waiting until timeout for monitored process [2022-01-18 05:15:11,028 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:15:11,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:15:11,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-18 05:15:11,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:15:11,619 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:15:11,619 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2022-01-18 05:15:12,444 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:15:12,445 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 205 treesize of output 177 [2022-01-18 05:15:12,447 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 149 [2022-01-18 05:15:13,716 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:15:13,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:15:14,476 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:15:14,476 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 181 treesize of output 165 [2022-01-18 05:15:15,093 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:15:15,093 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-01-18 05:15:15,098 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:15:15,098 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 87 treesize of output 81 [2022-01-18 05:15:15,144 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:15:15,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565874490] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:15:15,144 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:15:15,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:15:15,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848550769] [2022-01-18 05:15:15,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:15:15,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:15:15,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:15:15,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:15:15,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=625, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:15:15,145 INFO L87 Difference]: Start difference. First operand 268 states and 774 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:15:16,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:15:16,008 INFO L93 Difference]: Finished difference Result 444 states and 1273 transitions. [2022-01-18 05:15:16,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 05:15:16,008 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:15:16,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:15:16,009 INFO L225 Difference]: With dead ends: 444 [2022-01-18 05:15:16,009 INFO L226 Difference]: Without dead ends: 437 [2022-01-18 05:15:16,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=152, Invalid=1108, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 05:15:16,010 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 64 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 477 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:15:16,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 382 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 344 Invalid, 0 Unknown, 477 Unchecked, 0.1s Time] [2022-01-18 05:15:16,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2022-01-18 05:15:16,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 268. [2022-01-18 05:15:16,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 267 states have (on average 2.898876404494382) internal successors, (774), 267 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:15:16,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 774 transitions. [2022-01-18 05:15:16,013 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 774 transitions. Word has length 20 [2022-01-18 05:15:16,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:15:16,013 INFO L470 AbstractCegarLoop]: Abstraction has 268 states and 774 transitions. [2022-01-18 05:15:16,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:15:16,013 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 774 transitions. [2022-01-18 05:15:16,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:15:16,013 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:15:16,013 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:15:16,028 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (215)] Ended with exit code 0 [2022-01-18 05:15:16,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 215 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable404 [2022-01-18 05:15:16,214 INFO L402 AbstractCegarLoop]: === Iteration 406 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:15:16,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:15:16,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1325708811, now seen corresponding path program 15 times [2022-01-18 05:15:16,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:15:16,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280358475] [2022-01-18 05:15:16,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:15:16,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:15:16,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:15:16,586 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:15:16,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:15:16,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280358475] [2022-01-18 05:15:16,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280358475] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:15:16,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551708497] [2022-01-18 05:15:16,586 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:15:16,586 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:15:16,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:15:16,587 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) [2022-01-18 05:15:16,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (216)] Waiting until timeout for monitored process [2022-01-18 05:15:16,612 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 05:15:16,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:15:16,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-18 05:15:16,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:15:17,107 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:15:17,108 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 102 [2022-01-18 05:15:18,924 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:15:18,925 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 240 treesize of output 208 [2022-01-18 05:15:18,928 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 208 treesize of output 176 [2022-01-18 05:15:19,545 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:15:19,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:15:20,471 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:15:20,471 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 151 [2022-01-18 05:15:20,953 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:15:20,954 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2022-01-18 05:15:20,960 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:15:20,960 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 93 treesize of output 85 [2022-01-18 05:15:21,016 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:15:21,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551708497] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:15:21,016 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:15:21,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:15:21,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446583305] [2022-01-18 05:15:21,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:15:21,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:15:21,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:15:21,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:15:21,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:15:21,017 INFO L87 Difference]: Start difference. First operand 268 states and 774 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:15:21,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:15:21,795 INFO L93 Difference]: Finished difference Result 466 states and 1327 transitions. [2022-01-18 05:15:21,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 05:15:21,795 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:15:21,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:15:21,796 INFO L225 Difference]: With dead ends: 466 [2022-01-18 05:15:21,796 INFO L226 Difference]: Without dead ends: 459 [2022-01-18 05:15:21,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=132, Invalid=1128, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 05:15:21,797 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 61 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 218 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:15:21,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 406 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 330 Invalid, 0 Unknown, 218 Unchecked, 0.2s Time] [2022-01-18 05:15:21,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2022-01-18 05:15:21,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 272. [2022-01-18 05:15:21,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 271 states have (on average 2.885608856088561) internal successors, (782), 271 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:15:21,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 782 transitions. [2022-01-18 05:15:21,800 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 782 transitions. Word has length 20 [2022-01-18 05:15:21,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:15:21,800 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 782 transitions. [2022-01-18 05:15:21,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:15:21,801 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 782 transitions. [2022-01-18 05:15:21,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:15:21,801 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:15:21,801 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:15:21,816 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (216)] Ended with exit code 0 [2022-01-18 05:15:22,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable405,216 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:15:22,017 INFO L402 AbstractCegarLoop]: === Iteration 407 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:15:22,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:15:22,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1149835343, now seen corresponding path program 16 times [2022-01-18 05:15:22,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:15:22,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211975355] [2022-01-18 05:15:22,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:15:22,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:15:22,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:15:22,382 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:15:22,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:15:22,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211975355] [2022-01-18 05:15:22,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211975355] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:15:22,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346664810] [2022-01-18 05:15:22,382 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 05:15:22,382 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:15:22,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:15:22,383 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) [2022-01-18 05:15:22,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (217)] Waiting until timeout for monitored process [2022-01-18 05:15:22,406 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 05:15:22,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:15:22,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 05:15:22,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:15:22,901 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:15:22,902 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 101 [2022-01-18 05:15:23,763 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:15:23,764 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 156 treesize of output 134 [2022-01-18 05:15:23,766 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 112 [2022-01-18 05:15:24,106 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:15:24,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:15:24,775 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:15:24,775 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 143 treesize of output 131 [2022-01-18 05:15:25,063 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:15:25,063 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 101 treesize of output 95 [2022-01-18 05:15:25,068 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:15:25,068 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 87 treesize of output 81 [2022-01-18 05:15:25,116 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:15:25,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346664810] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:15:25,116 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:15:25,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:15:25,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166808626] [2022-01-18 05:15:25,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:15:25,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:15:25,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:15:25,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:15:25,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:15:25,117 INFO L87 Difference]: Start difference. First operand 272 states and 782 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:15:25,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:15:25,263 INFO L93 Difference]: Finished difference Result 439 states and 1272 transitions. [2022-01-18 05:15:25,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 05:15:25,263 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:15:25,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:15:25,264 INFO L225 Difference]: With dead ends: 439 [2022-01-18 05:15:25,264 INFO L226 Difference]: Without dead ends: 432 [2022-01-18 05:15:25,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=91, Invalid=665, Unknown=0, NotChecked=0, Total=756 [2022-01-18 05:15:25,264 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 48 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 300 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:15:25,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 337 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 193 Invalid, 0 Unknown, 300 Unchecked, 0.1s Time] [2022-01-18 05:15:25,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2022-01-18 05:15:25,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 273. [2022-01-18 05:15:25,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 272 states have (on average 2.886029411764706) internal successors, (785), 272 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:15:25,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 785 transitions. [2022-01-18 05:15:25,268 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 785 transitions. Word has length 20 [2022-01-18 05:15:25,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:15:25,268 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 785 transitions. [2022-01-18 05:15:25,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:15:25,268 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 785 transitions. [2022-01-18 05:15:25,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:15:25,268 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:15:25,268 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:15:25,283 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (217)] Ended with exit code 0 [2022-01-18 05:15:25,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 217 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable406 [2022-01-18 05:15:25,469 INFO L402 AbstractCegarLoop]: === Iteration 408 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:15:25,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:15:25,469 INFO L85 PathProgramCache]: Analyzing trace with hash -844629813, now seen corresponding path program 17 times [2022-01-18 05:15:25,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:15:25,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578744204] [2022-01-18 05:15:25,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:15:25,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:15:25,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:15:25,871 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:15:25,871 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:15:25,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578744204] [2022-01-18 05:15:25,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578744204] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:15:25,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968358674] [2022-01-18 05:15:25,872 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 05:15:25,872 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:15:25,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:15:25,873 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) [2022-01-18 05:15:25,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (218)] Waiting until timeout for monitored process [2022-01-18 05:15:25,896 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:15:25,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:15:25,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-18 05:15:25,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:15:26,174 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-01-18 05:15:26,596 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 229 treesize of output 201 [2022-01-18 05:15:26,598 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 201 treesize of output 173 [2022-01-18 05:15:27,386 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:15:27,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:15:28,522 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:15:28,522 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 226 treesize of output 210 [2022-01-18 05:15:29,188 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 05:15:29,189 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 89 treesize of output 78 [2022-01-18 05:15:29,190 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 61 [2022-01-18 05:15:29,195 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:15:29,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968358674] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:15:29,195 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:15:29,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-01-18 05:15:29,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598545404] [2022-01-18 05:15:29,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:15:29,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-18 05:15:29,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:15:29,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-18 05:15:29,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=670, Unknown=0, NotChecked=0, Total=756 [2022-01-18 05:15:29,196 INFO L87 Difference]: Start difference. First operand 273 states and 785 transitions. Second operand has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 28 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:15:32,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:15:32,780 INFO L93 Difference]: Finished difference Result 729 states and 1945 transitions. [2022-01-18 05:15:32,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-18 05:15:32,781 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 28 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:15:32,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:15:32,782 INFO L225 Difference]: With dead ends: 729 [2022-01-18 05:15:32,782 INFO L226 Difference]: Without dead ends: 699 [2022-01-18 05:15:32,782 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=284, Invalid=1522, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 05:15:32,782 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 283 mSDsluCounter, 823 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 1159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 05:15:32,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 389 Invalid, 1159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1132 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 05:15:32,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2022-01-18 05:15:32,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 282. [2022-01-18 05:15:32,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 281 states have (on average 2.900355871886121) internal successors, (815), 281 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:15:32,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 815 transitions. [2022-01-18 05:15:32,787 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 815 transitions. Word has length 20 [2022-01-18 05:15:32,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:15:32,787 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 815 transitions. [2022-01-18 05:15:32,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 28 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:15:32,787 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 815 transitions. [2022-01-18 05:15:32,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:15:32,787 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:15:32,787 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] [2022-01-18 05:15:32,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (218)] Forceful destruction successful, exit code 0 [2022-01-18 05:15:32,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable407,218 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:15:32,988 INFO L402 AbstractCegarLoop]: === Iteration 409 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:15:32,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:15:32,988 INFO L85 PathProgramCache]: Analyzing trace with hash -822033265, now seen corresponding path program 18 times [2022-01-18 05:15:32,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:15:32,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485845809] [2022-01-18 05:15:32,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:15:32,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:15:32,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:15:33,382 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:15:33,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:15:33,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485845809] [2022-01-18 05:15:33,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485845809] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:15:33,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476572965] [2022-01-18 05:15:33,382 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 05:15:33,382 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:15:33,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:15:33,383 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) [2022-01-18 05:15:33,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (219)] Waiting until timeout for monitored process [2022-01-18 05:15:33,407 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 05:15:33,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:15:33,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 05:15:33,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:15:33,823 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:15:33,824 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 120 treesize of output 102 [2022-01-18 05:15:34,456 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:15:34,457 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 219 treesize of output 191 [2022-01-18 05:15:34,468 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 191 treesize of output 163 [2022-01-18 05:15:35,133 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:15:35,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:15:35,740 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:15:35,740 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 139 treesize of output 127 [2022-01-18 05:15:36,184 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:15:36,184 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 109 treesize of output 101 [2022-01-18 05:15:36,189 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:15:36,190 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 93 treesize of output 85 [2022-01-18 05:15:36,245 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:15:36,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476572965] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:15:36,245 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:15:36,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:15:36,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456904391] [2022-01-18 05:15:36,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:15:36,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:15:36,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:15:36,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:15:36,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:15:36,245 INFO L87 Difference]: Start difference. First operand 282 states and 815 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:15:37,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:15:37,146 INFO L93 Difference]: Finished difference Result 453 states and 1321 transitions. [2022-01-18 05:15:37,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 05:15:37,146 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:15:37,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:15:37,147 INFO L225 Difference]: With dead ends: 453 [2022-01-18 05:15:37,147 INFO L226 Difference]: Without dead ends: 446 [2022-01-18 05:15:37,147 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=134, Invalid=1056, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 05:15:37,147 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 61 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 209 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:15:37,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 352 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 389 Invalid, 0 Unknown, 209 Unchecked, 0.2s Time] [2022-01-18 05:15:37,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2022-01-18 05:15:37,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 281. [2022-01-18 05:15:37,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 280 states have (on average 2.9) internal successors, (812), 280 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:15:37,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 812 transitions. [2022-01-18 05:15:37,151 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 812 transitions. Word has length 20 [2022-01-18 05:15:37,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:15:37,151 INFO L470 AbstractCegarLoop]: Abstraction has 281 states and 812 transitions. [2022-01-18 05:15:37,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:15:37,151 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 812 transitions. [2022-01-18 05:15:37,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:15:37,151 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:15:37,151 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] [2022-01-18 05:15:37,166 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (219)] Ended with exit code 0 [2022-01-18 05:15:37,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 219 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable408 [2022-01-18 05:15:37,351 INFO L402 AbstractCegarLoop]: === Iteration 410 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:15:37,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:15:37,352 INFO L85 PathProgramCache]: Analyzing trace with hash -532001567, now seen corresponding path program 19 times [2022-01-18 05:15:37,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:15:37,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603032723] [2022-01-18 05:15:37,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:15:37,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:15:37,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:15:37,715 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:15:37,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:15:37,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603032723] [2022-01-18 05:15:37,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603032723] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:15:37,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639912214] [2022-01-18 05:15:37,715 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 05:15:37,715 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:15:37,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:15:37,716 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) [2022-01-18 05:15:37,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (220)] Waiting until timeout for monitored process [2022-01-18 05:15:37,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:15:37,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-18 05:15:37,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:15:38,365 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:15:38,366 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2022-01-18 05:15:39,807 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:15:39,807 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 248 treesize of output 216 [2022-01-18 05:15:39,810 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 216 treesize of output 184 [2022-01-18 05:15:40,364 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:15:40,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:15:41,177 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:15:41,178 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 184 treesize of output 166 [2022-01-18 05:15:41,925 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:15:41,925 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 101 [2022-01-18 05:15:41,932 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:15:41,932 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2022-01-18 05:15:42,001 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:15:42,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639912214] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:15:42,001 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:15:42,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:15:42,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536803817] [2022-01-18 05:15:42,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:15:42,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:15:42,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:15:42,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:15:42,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=626, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:15:42,002 INFO L87 Difference]: Start difference. First operand 281 states and 812 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:15:42,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:15:42,791 INFO L93 Difference]: Finished difference Result 437 states and 1257 transitions. [2022-01-18 05:15:42,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 05:15:42,791 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:15:42,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:15:42,792 INFO L225 Difference]: With dead ends: 437 [2022-01-18 05:15:42,792 INFO L226 Difference]: Without dead ends: 430 [2022-01-18 05:15:42,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=132, Invalid=1058, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 05:15:42,792 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 43 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 61 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:15:42,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 302 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 328 Invalid, 0 Unknown, 61 Unchecked, 0.1s Time] [2022-01-18 05:15:42,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2022-01-18 05:15:42,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 283. [2022-01-18 05:15:42,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 282 states have (on average 2.897163120567376) internal successors, (817), 282 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:15:42,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 817 transitions. [2022-01-18 05:15:42,795 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 817 transitions. Word has length 20 [2022-01-18 05:15:42,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:15:42,795 INFO L470 AbstractCegarLoop]: Abstraction has 283 states and 817 transitions. [2022-01-18 05:15:42,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:15:42,796 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 817 transitions. [2022-01-18 05:15:42,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:15:42,796 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:15:42,796 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:15:42,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (220)] Forceful destruction successful, exit code 0 [2022-01-18 05:15:42,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable409,220 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:15:42,996 INFO L402 AbstractCegarLoop]: === Iteration 411 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:15:42,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:15:42,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1768500573, now seen corresponding path program 20 times [2022-01-18 05:15:42,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:15:42,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121529803] [2022-01-18 05:15:42,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:15:42,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:15:43,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:15:43,390 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:15:43,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:15:43,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121529803] [2022-01-18 05:15:43,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121529803] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:15:43,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709438165] [2022-01-18 05:15:43,390 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 05:15:43,390 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:15:43,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:15:43,391 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) [2022-01-18 05:15:43,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (221)] Waiting until timeout for monitored process [2022-01-18 05:15:43,416 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:15:43,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:15:43,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-18 05:15:43,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:15:44,063 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:15:44,064 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 107 [2022-01-18 05:15:44,770 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:15:44,770 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 255 treesize of output 225 [2022-01-18 05:15:44,774 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 225 treesize of output 195 [2022-01-18 05:15:45,958 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:15:45,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:15:46,950 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:15:46,950 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 252 treesize of output 234 [2022-01-18 05:15:47,835 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:15:47,836 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-01-18 05:15:47,841 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:15:47,841 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 87 treesize of output 81 [2022-01-18 05:15:47,894 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:15:47,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709438165] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:15:47,894 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:15:47,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:15:47,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735765047] [2022-01-18 05:15:47,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:15:47,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:15:47,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:15:47,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:15:47,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=611, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:15:47,895 INFO L87 Difference]: Start difference. First operand 283 states and 817 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:15:48,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:15:48,336 INFO L93 Difference]: Finished difference Result 462 states and 1340 transitions. [2022-01-18 05:15:48,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 05:15:48,336 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:15:48,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:15:48,337 INFO L225 Difference]: With dead ends: 462 [2022-01-18 05:15:48,337 INFO L226 Difference]: Without dead ends: 455 [2022-01-18 05:15:48,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=123, Invalid=807, Unknown=0, NotChecked=0, Total=930 [2022-01-18 05:15:48,337 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 62 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 458 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:15:48,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 292 Invalid, 783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 325 Invalid, 0 Unknown, 458 Unchecked, 0.1s Time] [2022-01-18 05:15:48,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2022-01-18 05:15:48,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 285. [2022-01-18 05:15:48,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 284 states have (on average 2.890845070422535) internal successors, (821), 284 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:15:48,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 821 transitions. [2022-01-18 05:15:48,341 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 821 transitions. Word has length 20 [2022-01-18 05:15:48,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:15:48,341 INFO L470 AbstractCegarLoop]: Abstraction has 285 states and 821 transitions. [2022-01-18 05:15:48,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:15:48,341 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 821 transitions. [2022-01-18 05:15:48,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:15:48,341 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:15:48,341 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:15:48,357 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (221)] Ended with exit code 0 [2022-01-18 05:15:48,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 221 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable410 [2022-01-18 05:15:48,542 INFO L402 AbstractCegarLoop]: === Iteration 412 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:15:48,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:15:48,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1791097121, now seen corresponding path program 21 times [2022-01-18 05:15:48,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:15:48,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126187330] [2022-01-18 05:15:48,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:15:48,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:15:48,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:15:48,834 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:15:48,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:15:48,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126187330] [2022-01-18 05:15:48,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126187330] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:15:48,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455495707] [2022-01-18 05:15:48,834 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:15:48,834 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:15:48,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:15:48,835 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) [2022-01-18 05:15:48,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (222)] Waiting until timeout for monitored process [2022-01-18 05:15:48,859 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 05:15:48,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:15:48,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-18 05:15:48,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:15:49,554 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:15:49,555 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 149 treesize of output 129 [2022-01-18 05:15:50,186 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:15:50,186 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 302 treesize of output 266 [2022-01-18 05:15:50,189 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 266 treesize of output 230 [2022-01-18 05:15:51,603 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:15:51,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:15:52,529 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:15:52,530 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 238 treesize of output 224 [2022-01-18 05:15:53,374 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:15:53,375 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 101 treesize of output 95 [2022-01-18 05:15:53,396 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:15:53,396 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 87 treesize of output 81 [2022-01-18 05:15:53,452 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:15:53,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455495707] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:15:53,452 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:15:53,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:15:53,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623848684] [2022-01-18 05:15:53,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:15:53,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:15:53,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:15:53,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:15:53,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=611, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:15:53,453 INFO L87 Difference]: Start difference. First operand 285 states and 821 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:15:54,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:15:54,206 INFO L93 Difference]: Finished difference Result 471 states and 1358 transitions. [2022-01-18 05:15:54,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 05:15:54,206 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:15:54,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:15:54,207 INFO L225 Difference]: With dead ends: 471 [2022-01-18 05:15:54,207 INFO L226 Difference]: Without dead ends: 464 [2022-01-18 05:15:54,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=111, Invalid=701, Unknown=0, NotChecked=0, Total=812 [2022-01-18 05:15:54,207 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 69 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 223 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:15:54,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 278 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 312 Invalid, 0 Unknown, 223 Unchecked, 0.2s Time] [2022-01-18 05:15:54,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2022-01-18 05:15:54,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 289. [2022-01-18 05:15:54,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 288 states have (on average 2.888888888888889) internal successors, (832), 288 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:15:54,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 832 transitions. [2022-01-18 05:15:54,210 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 832 transitions. Word has length 20 [2022-01-18 05:15:54,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:15:54,210 INFO L470 AbstractCegarLoop]: Abstraction has 289 states and 832 transitions. [2022-01-18 05:15:54,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:15:54,211 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 832 transitions. [2022-01-18 05:15:54,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:15:54,211 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:15:54,211 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:15:54,226 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (222)] Ended with exit code 0 [2022-01-18 05:15:54,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 222 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable411 [2022-01-18 05:15:54,411 INFO L402 AbstractCegarLoop]: === Iteration 413 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:15:54,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:15:54,412 INFO L85 PathProgramCache]: Analyzing trace with hash 165996897, now seen corresponding path program 22 times [2022-01-18 05:15:54,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:15:54,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470741473] [2022-01-18 05:15:54,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:15:54,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:15:54,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:15:54,919 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:15:54,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:15:54,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470741473] [2022-01-18 05:15:54,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470741473] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:15:54,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881199918] [2022-01-18 05:15:54,920 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 05:15:54,920 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:15:54,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:15:54,921 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) [2022-01-18 05:15:54,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (223)] Waiting until timeout for monitored process [2022-01-18 05:15:54,944 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 05:15:54,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:15:54,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 05:15:54,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:15:55,465 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:15:55,466 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 106 [2022-01-18 05:15:55,908 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:15:55,909 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 222 treesize of output 194 [2022-01-18 05:15:55,912 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 194 treesize of output 166 [2022-01-18 05:15:56,603 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:15:56,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:15:57,230 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:15:57,230 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2022-01-18 05:15:57,623 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:15:57,624 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 101 treesize of output 95 [2022-01-18 05:15:57,628 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:15:57,628 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 87 treesize of output 81 [2022-01-18 05:15:57,678 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:15:57,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881199918] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:15:57,678 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:15:57,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:15:57,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097103547] [2022-01-18 05:15:57,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:15:57,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:15:57,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:15:57,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:15:57,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:15:57,679 INFO L87 Difference]: Start difference. First operand 289 states and 832 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:15:59,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:15:59,032 INFO L93 Difference]: Finished difference Result 468 states and 1352 transitions. [2022-01-18 05:15:59,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 05:15:59,032 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:15:59,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:15:59,033 INFO L225 Difference]: With dead ends: 468 [2022-01-18 05:15:59,033 INFO L226 Difference]: Without dead ends: 465 [2022-01-18 05:15:59,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=162, Invalid=1170, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 05:15:59,033 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 83 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 315 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:15:59,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 306 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 381 Invalid, 0 Unknown, 315 Unchecked, 0.2s Time] [2022-01-18 05:15:59,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2022-01-18 05:15:59,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 285. [2022-01-18 05:15:59,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 284 states have (on average 2.890845070422535) internal successors, (821), 284 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:15:59,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 821 transitions. [2022-01-18 05:15:59,037 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 821 transitions. Word has length 20 [2022-01-18 05:15:59,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:15:59,037 INFO L470 AbstractCegarLoop]: Abstraction has 285 states and 821 transitions. [2022-01-18 05:15:59,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:15:59,037 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 821 transitions. [2022-01-18 05:15:59,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:15:59,037 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:15:59,037 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:15:59,052 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (223)] Ended with exit code 0 [2022-01-18 05:15:59,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 223 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable412 [2022-01-18 05:15:59,238 INFO L402 AbstractCegarLoop]: === Iteration 414 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:15:59,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:15:59,238 INFO L85 PathProgramCache]: Analyzing trace with hash -380295963, now seen corresponding path program 23 times [2022-01-18 05:15:59,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:15:59,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895062124] [2022-01-18 05:15:59,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:15:59,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:15:59,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:15:59,646 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:15:59,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:15:59,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895062124] [2022-01-18 05:15:59,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895062124] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:15:59,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040911387] [2022-01-18 05:15:59,646 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 05:15:59,646 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:15:59,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:15:59,647 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) [2022-01-18 05:15:59,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (224)] Waiting until timeout for monitored process [2022-01-18 05:15:59,672 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 05:15:59,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:15:59,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 05:15:59,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:15:59,957 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 122 treesize of output 104 [2022-01-18 05:16:00,195 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 229 treesize of output 199 [2022-01-18 05:16:00,197 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 199 treesize of output 169 [2022-01-18 05:16:00,879 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:16:00,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:16:01,441 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:16:01,441 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 121 treesize of output 109 [2022-01-18 05:16:01,775 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 05:16:01,775 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 78 [2022-01-18 05:16:01,776 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 61 [2022-01-18 05:16:01,781 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:16:01,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040911387] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:16:01,781 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:16:01,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-01-18 05:16:01,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093923066] [2022-01-18 05:16:01,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:16:01,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-18 05:16:01,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:16:01,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-18 05:16:01,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=674, Unknown=0, NotChecked=0, Total=756 [2022-01-18 05:16:01,782 INFO L87 Difference]: Start difference. First operand 285 states and 821 transitions. Second operand has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 28 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:16:05,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:16:05,658 INFO L93 Difference]: Finished difference Result 651 states and 1781 transitions. [2022-01-18 05:16:05,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-18 05:16:05,658 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 28 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:16:05,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:16:05,659 INFO L225 Difference]: With dead ends: 651 [2022-01-18 05:16:05,659 INFO L226 Difference]: Without dead ends: 626 [2022-01-18 05:16:05,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=456, Invalid=1994, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 05:16:05,659 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 344 mSDsluCounter, 910 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 1237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 76 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 05:16:05,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [344 Valid, 455 Invalid, 1237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1085 Invalid, 0 Unknown, 76 Unchecked, 0.6s Time] [2022-01-18 05:16:05,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2022-01-18 05:16:05,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 318. [2022-01-18 05:16:05,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 317 states have (on average 2.9558359621451102) internal successors, (937), 317 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:16:05,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 937 transitions. [2022-01-18 05:16:05,664 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 937 transitions. Word has length 20 [2022-01-18 05:16:05,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:16:05,664 INFO L470 AbstractCegarLoop]: Abstraction has 318 states and 937 transitions. [2022-01-18 05:16:05,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 28 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:16:05,664 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 937 transitions. [2022-01-18 05:16:05,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:16:05,664 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:16:05,664 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:16:05,680 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (224)] Ended with exit code 0 [2022-01-18 05:16:05,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 224 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable413 [2022-01-18 05:16:05,865 INFO L402 AbstractCegarLoop]: === Iteration 415 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:16:05,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:16:05,865 INFO L85 PathProgramCache]: Analyzing trace with hash -357699415, now seen corresponding path program 24 times [2022-01-18 05:16:05,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:16:05,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304927075] [2022-01-18 05:16:05,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:16:05,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:16:05,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:16:06,315 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:16:06,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:16:06,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304927075] [2022-01-18 05:16:06,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304927075] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:16:06,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862402061] [2022-01-18 05:16:06,315 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 05:16:06,315 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:16:06,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:16:06,316 INFO L229 MonitoredProcess]: Starting monitored process 225 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:16:06,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (225)] Waiting until timeout for monitored process [2022-01-18 05:16:06,349 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 05:16:06,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:16:06,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-18 05:16:06,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:16:06,965 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:16:06,966 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2022-01-18 05:16:07,392 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:16:07,393 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 219 treesize of output 191 [2022-01-18 05:16:07,396 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 191 treesize of output 163 [2022-01-18 05:16:08,919 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:16:08,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:16:09,796 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:16:09,796 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 163 [2022-01-18 05:16:10,347 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:16:10,347 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 101 treesize of output 95 [2022-01-18 05:16:10,352 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:16:10,352 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 87 treesize of output 81 [2022-01-18 05:16:10,394 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:16:10,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862402061] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:16:10,394 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:16:10,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:16:10,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135829004] [2022-01-18 05:16:10,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:16:10,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:16:10,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:16:10,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:16:10,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:16:10,395 INFO L87 Difference]: Start difference. First operand 318 states and 937 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:16:11,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:16:11,607 INFO L93 Difference]: Finished difference Result 484 states and 1413 transitions. [2022-01-18 05:16:11,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 05:16:11,608 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:16:11,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:16:11,608 INFO L225 Difference]: With dead ends: 484 [2022-01-18 05:16:11,608 INFO L226 Difference]: Without dead ends: 477 [2022-01-18 05:16:11,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=151, Invalid=1109, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 05:16:11,609 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 47 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 175 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:16:11,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 350 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 287 Invalid, 0 Unknown, 175 Unchecked, 0.1s Time] [2022-01-18 05:16:11,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2022-01-18 05:16:11,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 320. [2022-01-18 05:16:11,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 319 states have (on average 2.956112852664577) internal successors, (943), 319 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:16:11,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 943 transitions. [2022-01-18 05:16:11,612 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 943 transitions. Word has length 20 [2022-01-18 05:16:11,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:16:11,613 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 943 transitions. [2022-01-18 05:16:11,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:16:11,613 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 943 transitions. [2022-01-18 05:16:11,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:16:11,613 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:16:11,613 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] [2022-01-18 05:16:11,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (225)] Forceful destruction successful, exit code 0 [2022-01-18 05:16:11,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable414,225 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:16:11,815 INFO L402 AbstractCegarLoop]: === Iteration 416 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:16:11,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:16:11,815 INFO L85 PathProgramCache]: Analyzing trace with hash 213755391, now seen corresponding path program 25 times [2022-01-18 05:16:11,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:16:11,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558761441] [2022-01-18 05:16:11,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:16:11,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:16:11,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:16:12,249 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:16:12,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:16:12,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558761441] [2022-01-18 05:16:12,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558761441] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:16:12,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733085405] [2022-01-18 05:16:12,250 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 05:16:12,250 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:16:12,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:16:12,251 INFO L229 MonitoredProcess]: Starting monitored process 226 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:16:12,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (226)] Waiting until timeout for monitored process [2022-01-18 05:16:12,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:16:12,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-18 05:16:12,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:16:12,877 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:16:12,878 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2022-01-18 05:16:13,676 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:16:13,677 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 216 treesize of output 188 [2022-01-18 05:16:13,679 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 188 treesize of output 160 [2022-01-18 05:16:14,930 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:16:14,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:16:15,656 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:16:15,656 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 178 treesize of output 162 [2022-01-18 05:16:16,276 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:16:16,276 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-01-18 05:16:16,281 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:16:16,281 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-01-18 05:16:16,328 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:16:16,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733085405] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:16:16,328 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:16:16,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:16:16,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405588074] [2022-01-18 05:16:16,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:16:16,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:16:16,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:16:16,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:16:16,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=625, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:16:16,329 INFO L87 Difference]: Start difference. First operand 320 states and 943 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:16:17,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:16:17,223 INFO L93 Difference]: Finished difference Result 503 states and 1476 transitions. [2022-01-18 05:16:17,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 05:16:17,223 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:16:17,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:16:17,224 INFO L225 Difference]: With dead ends: 503 [2022-01-18 05:16:17,224 INFO L226 Difference]: Without dead ends: 496 [2022-01-18 05:16:17,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=160, Invalid=1100, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 05:16:17,224 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 74 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 474 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:16:17,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 341 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 249 Invalid, 0 Unknown, 474 Unchecked, 0.1s Time] [2022-01-18 05:16:17,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2022-01-18 05:16:17,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 325. [2022-01-18 05:16:17,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 324 states have (on average 2.9444444444444446) internal successors, (954), 324 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:16:17,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 954 transitions. [2022-01-18 05:16:17,228 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 954 transitions. Word has length 20 [2022-01-18 05:16:17,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:16:17,228 INFO L470 AbstractCegarLoop]: Abstraction has 325 states and 954 transitions. [2022-01-18 05:16:17,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:16:17,228 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 954 transitions. [2022-01-18 05:16:17,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:16:17,229 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:16:17,229 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:16:17,244 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (226)] Ended with exit code 0 [2022-01-18 05:16:17,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable415,226 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:16:17,429 INFO L402 AbstractCegarLoop]: === Iteration 417 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:16:17,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:16:17,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1411344833, now seen corresponding path program 26 times [2022-01-18 05:16:17,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:16:17,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323752687] [2022-01-18 05:16:17,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:16:17,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:16:17,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:16:17,710 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:16:17,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:16:17,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323752687] [2022-01-18 05:16:17,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323752687] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:16:17,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486314956] [2022-01-18 05:16:17,711 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 05:16:17,711 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:16:17,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:16:17,712 INFO L229 MonitoredProcess]: Starting monitored process 227 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:16:17,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (227)] Waiting until timeout for monitored process [2022-01-18 05:16:17,747 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:16:17,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:16:17,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 05:16:17,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:16:18,259 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:16:18,260 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 102 [2022-01-18 05:16:18,859 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:16:18,865 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 166 treesize of output 142 [2022-01-18 05:16:18,870 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 118 [2022-01-18 05:16:19,246 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:16:19,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:16:19,869 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:16:19,870 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 135 treesize of output 123 [2022-01-18 05:16:20,198 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:16:20,199 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 101 treesize of output 95 [2022-01-18 05:16:20,203 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:16:20,203 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-01-18 05:16:20,254 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:16:20,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486314956] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:16:20,254 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:16:20,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:16:20,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449362175] [2022-01-18 05:16:20,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:16:20,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:16:20,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:16:20,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:16:20,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=616, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:16:20,255 INFO L87 Difference]: Start difference. First operand 325 states and 954 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:16:20,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:16:20,475 INFO L93 Difference]: Finished difference Result 505 states and 1475 transitions. [2022-01-18 05:16:20,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 05:16:20,476 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:16:20,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:16:20,476 INFO L225 Difference]: With dead ends: 505 [2022-01-18 05:16:20,476 INFO L226 Difference]: Without dead ends: 502 [2022-01-18 05:16:20,477 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=116, Invalid=754, Unknown=0, NotChecked=0, Total=870 [2022-01-18 05:16:20,477 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 44 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 295 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:16:20,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 291 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 291 Invalid, 0 Unknown, 295 Unchecked, 0.1s Time] [2022-01-18 05:16:20,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2022-01-18 05:16:20,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 330. [2022-01-18 05:16:20,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 329 states have (on average 2.933130699088146) internal successors, (965), 329 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) [2022-01-18 05:16:20,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 965 transitions. [2022-01-18 05:16:20,480 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 965 transitions. Word has length 20 [2022-01-18 05:16:20,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:16:20,481 INFO L470 AbstractCegarLoop]: Abstraction has 330 states and 965 transitions. [2022-01-18 05:16:20,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:16:20,481 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 965 transitions. [2022-01-18 05:16:20,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:16:20,481 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:16:20,481 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] [2022-01-18 05:16:20,497 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (227)] Ended with exit code 0 [2022-01-18 05:16:20,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable416,227 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:16:20,681 INFO L402 AbstractCegarLoop]: === Iteration 418 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:16:20,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:16:20,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1186686013, now seen corresponding path program 27 times [2022-01-18 05:16:20,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:16:20,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737099718] [2022-01-18 05:16:20,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:16:20,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:16:20,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:16:20,955 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:16:20,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:16:20,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737099718] [2022-01-18 05:16:20,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737099718] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:16:20,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290132918] [2022-01-18 05:16:20,956 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:16:20,956 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:16:20,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:16:20,956 INFO L229 MonitoredProcess]: Starting monitored process 228 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:16:20,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (228)] Waiting until timeout for monitored process [2022-01-18 05:16:20,982 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 05:16:20,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:16:20,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-18 05:16:20,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:16:21,669 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:16:21,670 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 107 [2022-01-18 05:16:22,962 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:16:22,963 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 174 [2022-01-18 05:16:22,965 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 174 treesize of output 150 [2022-01-18 05:16:23,531 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:16:23,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:16:24,222 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:16:24,223 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 262 treesize of output 242 [2022-01-18 05:16:24,973 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:16:24,974 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-01-18 05:16:24,980 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:16:24,980 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-01-18 05:16:25,029 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:16:25,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290132918] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:16:25,029 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:16:25,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:16:25,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839316908] [2022-01-18 05:16:25,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:16:25,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:16:25,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:16:25,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:16:25,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=616, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:16:25,029 INFO L87 Difference]: Start difference. First operand 330 states and 965 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:16:25,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:16:25,185 INFO L93 Difference]: Finished difference Result 484 states and 1405 transitions. [2022-01-18 05:16:25,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 05:16:25,185 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:16:25,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:16:25,186 INFO L225 Difference]: With dead ends: 484 [2022-01-18 05:16:25,186 INFO L226 Difference]: Without dead ends: 481 [2022-01-18 05:16:25,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=94, Invalid=662, Unknown=0, NotChecked=0, Total=756 [2022-01-18 05:16:25,186 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 50 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 165 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:16:25,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 284 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 245 Invalid, 0 Unknown, 165 Unchecked, 0.1s Time] [2022-01-18 05:16:25,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2022-01-18 05:16:25,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 326. [2022-01-18 05:16:25,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 325 states have (on average 2.9446153846153846) internal successors, (957), 325 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:16:25,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 957 transitions. [2022-01-18 05:16:25,190 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 957 transitions. Word has length 20 [2022-01-18 05:16:25,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:16:25,190 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 957 transitions. [2022-01-18 05:16:25,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:16:25,190 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 957 transitions. [2022-01-18 05:16:25,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:16:25,190 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:16:25,190 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:16:25,205 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (228)] Ended with exit code 0 [2022-01-18 05:16:25,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable417,228 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:16:25,395 INFO L402 AbstractCegarLoop]: === Iteration 419 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:16:25,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:16:25,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1603549747, now seen corresponding path program 28 times [2022-01-18 05:16:25,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:16:25,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152321032] [2022-01-18 05:16:25,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:16:25,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:16:25,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:16:25,837 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:16:25,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:16:25,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152321032] [2022-01-18 05:16:25,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152321032] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:16:25,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937022002] [2022-01-18 05:16:25,837 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 05:16:25,837 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:16:25,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:16:25,838 INFO L229 MonitoredProcess]: Starting monitored process 229 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:16:25,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (229)] Waiting until timeout for monitored process [2022-01-18 05:16:25,863 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 05:16:25,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:16:25,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-18 05:16:25,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:16:26,369 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:16:26,370 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 122 treesize of output 104 [2022-01-18 05:16:27,795 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:16:27,796 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 221 treesize of output 193 [2022-01-18 05:16:27,798 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 193 treesize of output 165 [2022-01-18 05:16:28,848 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:16:28,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:16:29,675 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:16:29,675 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 146 treesize of output 134 [2022-01-18 05:16:30,065 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:16:30,065 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 101 treesize of output 95 [2022-01-18 05:16:30,070 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:16:30,070 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 87 treesize of output 81 [2022-01-18 05:16:30,123 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:16:30,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [937022002] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:16:30,123 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:16:30,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:16:30,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526276803] [2022-01-18 05:16:30,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:16:30,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:16:30,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:16:30,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:16:30,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:16:30,124 INFO L87 Difference]: Start difference. First operand 326 states and 957 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:16:31,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:16:31,050 INFO L93 Difference]: Finished difference Result 747 states and 2161 transitions. [2022-01-18 05:16:31,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 05:16:31,050 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:16:31,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:16:31,051 INFO L225 Difference]: With dead ends: 747 [2022-01-18 05:16:31,052 INFO L226 Difference]: Without dead ends: 741 [2022-01-18 05:16:31,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=140, Invalid=1192, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 05:16:31,052 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 104 mSDsluCounter, 839 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 461 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:16:31,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 527 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 428 Invalid, 0 Unknown, 461 Unchecked, 0.2s Time] [2022-01-18 05:16:31,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2022-01-18 05:16:31,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 330. [2022-01-18 05:16:31,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 329 states have (on average 2.9422492401215807) internal successors, (968), 329 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:16:31,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 968 transitions. [2022-01-18 05:16:31,057 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 968 transitions. Word has length 20 [2022-01-18 05:16:31,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:16:31,057 INFO L470 AbstractCegarLoop]: Abstraction has 330 states and 968 transitions. [2022-01-18 05:16:31,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:16:31,057 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 968 transitions. [2022-01-18 05:16:31,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:16:31,058 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:16:31,058 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:16:31,074 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (229)] Forceful destruction successful, exit code 0 [2022-01-18 05:16:31,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable418,229 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:16:31,271 INFO L402 AbstractCegarLoop]: === Iteration 420 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:16:31,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:16:31,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1792506867, now seen corresponding path program 29 times [2022-01-18 05:16:31,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:16:31,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624452855] [2022-01-18 05:16:31,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:16:31,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:16:31,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:16:31,594 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:16:31,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:16:31,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624452855] [2022-01-18 05:16:31,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624452855] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:16:31,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092064548] [2022-01-18 05:16:31,594 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 05:16:31,594 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:16:31,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:16:31,595 INFO L229 MonitoredProcess]: Starting monitored process 230 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:16:31,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (230)] Waiting until timeout for monitored process [2022-01-18 05:16:31,620 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:16:31,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:16:31,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 05:16:31,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:16:31,848 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-01-18 05:16:32,393 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 144 [2022-01-18 05:16:32,394 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 118 [2022-01-18 05:16:32,686 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:16:32,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:16:33,335 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:16:33,336 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 122 treesize of output 110 [2022-01-18 05:16:33,668 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 05:16:33,668 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 97 treesize of output 84 [2022-01-18 05:16:33,670 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 65 [2022-01-18 05:16:33,674 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:16:33,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092064548] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:16:33,674 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:16:33,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-01-18 05:16:33,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842266393] [2022-01-18 05:16:33,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:16:33,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-18 05:16:33,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:16:33,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-18 05:16:33,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=679, Unknown=0, NotChecked=0, Total=756 [2022-01-18 05:16:33,675 INFO L87 Difference]: Start difference. First operand 330 states and 968 transitions. Second operand has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 28 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:16:37,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:16:37,406 INFO L93 Difference]: Finished difference Result 689 states and 1910 transitions. [2022-01-18 05:16:37,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 05:16:37,406 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 28 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:16:37,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:16:37,407 INFO L225 Difference]: With dead ends: 689 [2022-01-18 05:16:37,407 INFO L226 Difference]: Without dead ends: 659 [2022-01-18 05:16:37,407 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=308, Invalid=1672, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 05:16:37,407 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 279 mSDsluCounter, 997 mSDsCounter, 0 mSdLazyCounter, 1198 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 1229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 05:16:37,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 414 Invalid, 1229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1198 Invalid, 0 Unknown, 4 Unchecked, 0.6s Time] [2022-01-18 05:16:37,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2022-01-18 05:16:37,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 332. [2022-01-18 05:16:37,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 331 states have (on average 2.933534743202417) internal successors, (971), 331 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:16:37,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 971 transitions. [2022-01-18 05:16:37,411 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 971 transitions. Word has length 20 [2022-01-18 05:16:37,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:16:37,411 INFO L470 AbstractCegarLoop]: Abstraction has 332 states and 971 transitions. [2022-01-18 05:16:37,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 28 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:16:37,412 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 971 transitions. [2022-01-18 05:16:37,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:16:37,412 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:16:37,412 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:16:37,427 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (230)] Ended with exit code 0 [2022-01-18 05:16:37,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable419,230 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:16:37,612 INFO L402 AbstractCegarLoop]: === Iteration 421 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:16:37,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:16:37,613 INFO L85 PathProgramCache]: Analyzing trace with hash -449708207, now seen corresponding path program 30 times [2022-01-18 05:16:37,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:16:37,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811547834] [2022-01-18 05:16:37,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:16:37,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:16:37,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:16:38,151 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:16:38,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:16:38,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811547834] [2022-01-18 05:16:38,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811547834] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:16:38,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641738694] [2022-01-18 05:16:38,151 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 05:16:38,151 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:16:38,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:16:38,152 INFO L229 MonitoredProcess]: Starting monitored process 231 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:16:38,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (231)] Waiting until timeout for monitored process [2022-01-18 05:16:38,176 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 05:16:38,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:16:38,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-18 05:16:38,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:16:38,762 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:16:38,763 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 107 [2022-01-18 05:16:39,648 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:16:39,649 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 235 treesize of output 205 [2022-01-18 05:16:39,651 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 205 treesize of output 175 [2022-01-18 05:16:41,098 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:16:41,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:16:42,291 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:16:42,291 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 252 treesize of output 232 [2022-01-18 05:16:43,057 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:16:43,057 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 101 [2022-01-18 05:16:43,062 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:16:43,062 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 85 [2022-01-18 05:16:43,126 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:16:43,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641738694] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:16:43,126 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:16:43,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:16:43,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025748217] [2022-01-18 05:16:43,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:16:43,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:16:43,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:16:43,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:16:43,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:16:43,127 INFO L87 Difference]: Start difference. First operand 332 states and 971 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:16:43,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:16:43,832 INFO L93 Difference]: Finished difference Result 509 states and 1522 transitions. [2022-01-18 05:16:43,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 05:16:43,832 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:16:43,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:16:43,833 INFO L225 Difference]: With dead ends: 509 [2022-01-18 05:16:43,833 INFO L226 Difference]: Without dead ends: 502 [2022-01-18 05:16:43,833 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=104, Invalid=708, Unknown=0, NotChecked=0, Total=812 [2022-01-18 05:16:43,833 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 91 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 425 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:16:43,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 313 Invalid, 803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 370 Invalid, 0 Unknown, 425 Unchecked, 0.2s Time] [2022-01-18 05:16:43,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2022-01-18 05:16:43,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 337. [2022-01-18 05:16:43,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 336 states have (on average 2.9285714285714284) internal successors, (984), 336 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:16:43,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 984 transitions. [2022-01-18 05:16:43,837 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 984 transitions. Word has length 20 [2022-01-18 05:16:43,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:16:43,838 INFO L470 AbstractCegarLoop]: Abstraction has 337 states and 984 transitions. [2022-01-18 05:16:43,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:16:43,838 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 984 transitions. [2022-01-18 05:16:43,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:16:43,838 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:16:43,838 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:16:43,854 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (231)] Ended with exit code 0 [2022-01-18 05:16:44,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 231 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable420 [2022-01-18 05:16:44,040 INFO L402 AbstractCegarLoop]: === Iteration 422 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:16:44,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:16:44,040 INFO L85 PathProgramCache]: Analyzing trace with hash 121746599, now seen corresponding path program 31 times [2022-01-18 05:16:44,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:16:44,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088129775] [2022-01-18 05:16:44,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:16:44,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:16:44,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:16:44,347 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:16:44,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:16:44,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088129775] [2022-01-18 05:16:44,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088129775] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:16:44,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285203591] [2022-01-18 05:16:44,347 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 05:16:44,347 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:16:44,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:16:44,348 INFO L229 MonitoredProcess]: Starting monitored process 232 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:16:44,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (232)] Waiting until timeout for monitored process [2022-01-18 05:16:44,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:16:44,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 05:16:44,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:16:44,819 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:16:44,820 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 102 [2022-01-18 05:16:45,732 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:16:45,733 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 168 treesize of output 144 [2022-01-18 05:16:45,735 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 144 treesize of output 120 [2022-01-18 05:16:46,028 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:16:46,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:16:46,652 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:16:46,652 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2022-01-18 05:16:47,033 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:16:47,033 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-01-18 05:16:47,038 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:16:47,038 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 87 treesize of output 81 [2022-01-18 05:16:47,087 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:16:47,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285203591] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:16:47,088 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:16:47,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:16:47,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091644279] [2022-01-18 05:16:47,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:16:47,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:16:47,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:16:47,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:16:47,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:16:47,088 INFO L87 Difference]: Start difference. First operand 337 states and 984 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:16:47,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:16:47,261 INFO L93 Difference]: Finished difference Result 519 states and 1540 transitions. [2022-01-18 05:16:47,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 05:16:47,261 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:16:47,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:16:47,262 INFO L225 Difference]: With dead ends: 519 [2022-01-18 05:16:47,262 INFO L226 Difference]: Without dead ends: 512 [2022-01-18 05:16:47,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=91, Invalid=665, Unknown=0, NotChecked=0, Total=756 [2022-01-18 05:16:47,262 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 51 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 258 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:16:47,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 314 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 317 Invalid, 0 Unknown, 258 Unchecked, 0.1s Time] [2022-01-18 05:16:47,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2022-01-18 05:16:47,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 342. [2022-01-18 05:16:47,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 341 states have (on average 2.9266862170087977) internal successors, (998), 341 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) [2022-01-18 05:16:47,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 998 transitions. [2022-01-18 05:16:47,266 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 998 transitions. Word has length 20 [2022-01-18 05:16:47,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:16:47,266 INFO L470 AbstractCegarLoop]: Abstraction has 342 states and 998 transitions. [2022-01-18 05:16:47,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:16:47,266 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 998 transitions. [2022-01-18 05:16:47,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:16:47,267 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:16:47,267 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:16:47,282 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (232)] Forceful destruction successful, exit code 0 [2022-01-18 05:16:47,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 232 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable421 [2022-01-18 05:16:47,467 INFO L402 AbstractCegarLoop]: === Iteration 423 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:16:47,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:16:47,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1094677221, now seen corresponding path program 32 times [2022-01-18 05:16:47,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:16:47,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672320587] [2022-01-18 05:16:47,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:16:47,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:16:47,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:16:47,833 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:16:47,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:16:47,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672320587] [2022-01-18 05:16:47,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672320587] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:16:47,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354579907] [2022-01-18 05:16:47,833 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 05:16:47,833 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:16:47,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:16:47,834 INFO L229 MonitoredProcess]: Starting monitored process 233 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:16:47,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (233)] Waiting until timeout for monitored process [2022-01-18 05:16:47,859 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:16:47,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:16:47,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 05:16:47,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:16:48,303 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:16:48,303 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 102 [2022-01-18 05:16:49,427 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:16:49,428 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 168 treesize of output 144 [2022-01-18 05:16:49,430 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-01-18 05:16:49,677 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:16:49,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:16:50,325 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:16:50,326 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2022-01-18 05:16:50,687 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:16:50,687 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-01-18 05:16:50,693 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:16:50,693 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 87 treesize of output 81 [2022-01-18 05:16:50,746 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:16:50,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354579907] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:16:50,746 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:16:50,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:16:50,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472222833] [2022-01-18 05:16:50,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:16:50,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:16:50,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:16:50,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:16:50,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:16:50,747 INFO L87 Difference]: Start difference. First operand 342 states and 998 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:16:50,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:16:50,932 INFO L93 Difference]: Finished difference Result 491 states and 1452 transitions. [2022-01-18 05:16:50,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 05:16:50,932 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:16:50,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:16:50,933 INFO L225 Difference]: With dead ends: 491 [2022-01-18 05:16:50,933 INFO L226 Difference]: Without dead ends: 488 [2022-01-18 05:16:50,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=92, Invalid=664, Unknown=0, NotChecked=0, Total=756 [2022-01-18 05:16:50,933 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 36 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 52 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:16:50,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 316 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 343 Invalid, 0 Unknown, 52 Unchecked, 0.1s Time] [2022-01-18 05:16:50,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2022-01-18 05:16:50,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 345. [2022-01-18 05:16:50,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 344 states have (on average 2.9244186046511627) internal successors, (1006), 344 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:16:50,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 1006 transitions. [2022-01-18 05:16:50,937 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 1006 transitions. Word has length 20 [2022-01-18 05:16:50,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:16:50,937 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 1006 transitions. [2022-01-18 05:16:50,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:16:50,937 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 1006 transitions. [2022-01-18 05:16:50,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:16:50,938 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:16:50,938 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:16:50,953 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (233)] Ended with exit code 0 [2022-01-18 05:16:51,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 233 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable422 [2022-01-18 05:16:51,143 INFO L402 AbstractCegarLoop]: === Iteration 424 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:16:51,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:16:51,143 INFO L85 PathProgramCache]: Analyzing trace with hash 470081229, now seen corresponding path program 33 times [2022-01-18 05:16:51,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:16:51,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88650212] [2022-01-18 05:16:51,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:16:51,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:16:51,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:16:51,491 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:16:51,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:16:51,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88650212] [2022-01-18 05:16:51,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88650212] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:16:51,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555760589] [2022-01-18 05:16:51,491 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:16:51,491 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:16:51,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:16:51,492 INFO L229 MonitoredProcess]: Starting monitored process 234 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:16:51,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (234)] Waiting until timeout for monitored process [2022-01-18 05:16:51,516 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 05:16:51,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:16:51,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-18 05:16:51,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:16:52,117 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:16:52,118 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 102 [2022-01-18 05:16:53,500 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:16:53,500 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 217 treesize of output 189 [2022-01-18 05:16:53,503 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 189 treesize of output 161 [2022-01-18 05:16:54,038 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:16:54,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:16:54,872 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:16:54,872 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 184 treesize of output 166 [2022-01-18 05:16:55,645 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:16:55,645 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 109 treesize of output 101 [2022-01-18 05:16:55,650 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:16:55,650 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2022-01-18 05:16:55,713 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:16:55,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555760589] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:16:55,714 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:16:55,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:16:55,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887744013] [2022-01-18 05:16:55,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:16:55,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:16:55,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:16:55,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:16:55,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=625, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:16:55,714 INFO L87 Difference]: Start difference. First operand 345 states and 1006 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:16:56,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:16:56,730 INFO L93 Difference]: Finished difference Result 621 states and 1818 transitions. [2022-01-18 05:16:56,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-18 05:16:56,731 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:16:56,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:16:56,732 INFO L225 Difference]: With dead ends: 621 [2022-01-18 05:16:56,732 INFO L226 Difference]: Without dead ends: 607 [2022-01-18 05:16:56,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 22 SyntacticMatches, 6 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=148, Invalid=1112, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 05:16:56,732 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 72 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 318 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:16:56,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 518 Invalid, 818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 496 Invalid, 0 Unknown, 318 Unchecked, 0.2s Time] [2022-01-18 05:16:56,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2022-01-18 05:16:56,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 348. [2022-01-18 05:16:56,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 347 states have (on average 2.922190201729107) internal successors, (1014), 347 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:16:56,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 1014 transitions. [2022-01-18 05:16:56,736 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 1014 transitions. Word has length 20 [2022-01-18 05:16:56,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:16:56,736 INFO L470 AbstractCegarLoop]: Abstraction has 348 states and 1014 transitions. [2022-01-18 05:16:56,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:16:56,736 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 1014 transitions. [2022-01-18 05:16:56,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:16:56,737 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:16:56,737 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:16:56,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (234)] Forceful destruction successful, exit code 0 [2022-01-18 05:16:56,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable423,234 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:16:56,937 INFO L402 AbstractCegarLoop]: === Iteration 425 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:16:56,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:16:56,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1524383927, now seen corresponding path program 34 times [2022-01-18 05:16:56,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:16:56,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275788959] [2022-01-18 05:16:56,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:16:56,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:16:56,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:16:57,309 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:16:57,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:16:57,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275788959] [2022-01-18 05:16:57,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275788959] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:16:57,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370201803] [2022-01-18 05:16:57,309 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 05:16:57,309 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:16:57,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:16:57,310 INFO L229 MonitoredProcess]: Starting monitored process 235 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:16:57,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (235)] Waiting until timeout for monitored process [2022-01-18 05:16:57,334 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 05:16:57,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:16:57,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 05:16:57,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:16:57,864 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:16:57,864 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2022-01-18 05:16:58,289 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:16:58,290 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 219 treesize of output 191 [2022-01-18 05:16:58,292 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 191 treesize of output 163 [2022-01-18 05:16:59,020 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:16:59,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:16:59,642 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:16:59,642 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 142 treesize of output 130 [2022-01-18 05:17:00,045 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:17:00,045 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 101 [2022-01-18 05:17:00,050 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:17:00,051 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 85 [2022-01-18 05:17:00,097 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:17:00,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370201803] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:17:00,097 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:17:00,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:17:00,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287690573] [2022-01-18 05:17:00,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:17:00,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:17:00,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:17:00,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:17:00,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:17:00,098 INFO L87 Difference]: Start difference. First operand 348 states and 1014 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:17:01,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:17:01,625 INFO L93 Difference]: Finished difference Result 643 states and 1884 transitions. [2022-01-18 05:17:01,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-18 05:17:01,625 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:17:01,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:17:01,626 INFO L225 Difference]: With dead ends: 643 [2022-01-18 05:17:01,626 INFO L226 Difference]: Without dead ends: 629 [2022-01-18 05:17:01,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=175, Invalid=1157, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 05:17:01,627 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 93 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 226 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:17:01,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 404 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 327 Invalid, 0 Unknown, 226 Unchecked, 0.2s Time] [2022-01-18 05:17:01,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2022-01-18 05:17:01,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 355. [2022-01-18 05:17:01,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 354 states have (on average 2.92090395480226) internal successors, (1034), 354 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:17:01,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 1034 transitions. [2022-01-18 05:17:01,631 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 1034 transitions. Word has length 20 [2022-01-18 05:17:01,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:17:01,631 INFO L470 AbstractCegarLoop]: Abstraction has 355 states and 1034 transitions. [2022-01-18 05:17:01,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:17:01,631 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 1034 transitions. [2022-01-18 05:17:01,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:17:01,632 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:17:01,632 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:17:01,647 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (235)] Ended with exit code 0 [2022-01-18 05:17:01,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable424,235 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:17:01,832 INFO L402 AbstractCegarLoop]: === Iteration 426 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:17:01,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:17:01,832 INFO L85 PathProgramCache]: Analyzing trace with hash 621786833, now seen corresponding path program 35 times [2022-01-18 05:17:01,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:17:01,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034052345] [2022-01-18 05:17:01,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:17:01,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:17:01,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:17:02,232 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:17:02,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:17:02,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034052345] [2022-01-18 05:17:02,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034052345] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:17:02,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506766095] [2022-01-18 05:17:02,232 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 05:17:02,232 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:17:02,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:17:02,233 INFO L229 MonitoredProcess]: Starting monitored process 236 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:17:02,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (236)] Waiting until timeout for monitored process [2022-01-18 05:17:02,258 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 05:17:02,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:17:02,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 05:17:02,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:17:02,524 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-01-18 05:17:02,791 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 232 treesize of output 202 [2022-01-18 05:17:02,793 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 202 treesize of output 172 [2022-01-18 05:17:03,526 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:17:03,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:17:04,083 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:17:04,084 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 125 treesize of output 113 [2022-01-18 05:17:04,392 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 05:17:04,392 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 89 treesize of output 78 [2022-01-18 05:17:04,394 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 61 [2022-01-18 05:17:04,398 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:17:04,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506766095] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:17:04,399 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:17:04,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-01-18 05:17:04,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846378198] [2022-01-18 05:17:04,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:17:04,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-18 05:17:04,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:17:04,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-18 05:17:04,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=674, Unknown=0, NotChecked=0, Total=756 [2022-01-18 05:17:04,399 INFO L87 Difference]: Start difference. First operand 355 states and 1034 transitions. Second operand has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 28 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:17:07,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:17:07,672 INFO L93 Difference]: Finished difference Result 703 states and 1952 transitions. [2022-01-18 05:17:07,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-18 05:17:07,673 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 28 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:17:07,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:17:07,674 INFO L225 Difference]: With dead ends: 703 [2022-01-18 05:17:07,674 INFO L226 Difference]: Without dead ends: 626 [2022-01-18 05:17:07,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=316, Invalid=1754, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 05:17:07,674 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 260 mSDsluCounter, 961 mSDsCounter, 0 mSdLazyCounter, 1211 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 1356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 75 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 05:17:07,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 437 Invalid, 1356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1211 Invalid, 0 Unknown, 75 Unchecked, 0.6s Time] [2022-01-18 05:17:07,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2022-01-18 05:17:07,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 362. [2022-01-18 05:17:07,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 361 states have (on average 2.914127423822715) internal successors, (1052), 361 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) [2022-01-18 05:17:07,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 1052 transitions. [2022-01-18 05:17:07,679 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 1052 transitions. Word has length 20 [2022-01-18 05:17:07,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:17:07,679 INFO L470 AbstractCegarLoop]: Abstraction has 362 states and 1052 transitions. [2022-01-18 05:17:07,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 28 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:17:07,679 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 1052 transitions. [2022-01-18 05:17:07,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:17:07,679 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:17:07,679 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:17:07,694 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (236)] Ended with exit code 0 [2022-01-18 05:17:07,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 236 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable425 [2022-01-18 05:17:07,880 INFO L402 AbstractCegarLoop]: === Iteration 427 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:17:07,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:17:07,880 INFO L85 PathProgramCache]: Analyzing trace with hash 644383381, now seen corresponding path program 36 times [2022-01-18 05:17:07,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:17:07,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955227982] [2022-01-18 05:17:07,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:17:07,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:17:07,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:17:08,277 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:17:08,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:17:08,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955227982] [2022-01-18 05:17:08,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955227982] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:17:08,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422087584] [2022-01-18 05:17:08,277 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 05:17:08,277 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:17:08,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:17:08,278 INFO L229 MonitoredProcess]: Starting monitored process 237 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:17:08,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (237)] Waiting until timeout for monitored process [2022-01-18 05:17:08,301 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 05:17:08,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:17:08,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-18 05:17:08,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:17:08,886 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:17:08,887 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 122 treesize of output 104 [2022-01-18 05:17:09,360 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:17:09,361 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 202 treesize of output 174 [2022-01-18 05:17:09,364 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 174 treesize of output 146 [2022-01-18 05:17:10,643 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:17:10,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:17:11,551 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:17:11,551 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 178 treesize of output 164 [2022-01-18 05:17:12,129 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:17:12,129 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2022-01-18 05:17:12,136 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:17:12,136 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2022-01-18 05:17:12,191 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:17:12,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422087584] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:17:12,191 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:17:12,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:17:12,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348953828] [2022-01-18 05:17:12,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:17:12,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:17:12,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:17:12,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:17:12,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:17:12,192 INFO L87 Difference]: Start difference. First operand 362 states and 1052 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:17:13,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:17:13,408 INFO L93 Difference]: Finished difference Result 494 states and 1443 transitions. [2022-01-18 05:17:13,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 05:17:13,408 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:17:13,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:17:13,409 INFO L225 Difference]: With dead ends: 494 [2022-01-18 05:17:13,409 INFO L226 Difference]: Without dead ends: 487 [2022-01-18 05:17:13,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=151, Invalid=1109, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 05:17:13,409 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 76 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 171 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:17:13,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 248 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 319 Invalid, 0 Unknown, 171 Unchecked, 0.1s Time] [2022-01-18 05:17:13,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2022-01-18 05:17:13,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 364. [2022-01-18 05:17:13,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 363 states have (on average 2.909090909090909) internal successors, (1056), 363 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:17:13,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 1056 transitions. [2022-01-18 05:17:13,413 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 1056 transitions. Word has length 20 [2022-01-18 05:17:13,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:17:13,413 INFO L470 AbstractCegarLoop]: Abstraction has 364 states and 1056 transitions. [2022-01-18 05:17:13,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:17:13,414 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 1056 transitions. [2022-01-18 05:17:13,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:17:13,414 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:17:13,414 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:17:13,429 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (237)] Ended with exit code 0 [2022-01-18 05:17:13,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 237 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable426 [2022-01-18 05:17:13,614 INFO L402 AbstractCegarLoop]: === Iteration 428 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:17:13,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:17:13,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1215838187, now seen corresponding path program 37 times [2022-01-18 05:17:13,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:17:13,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430981830] [2022-01-18 05:17:13,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:17:13,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:17:13,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:17:14,014 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:17:14,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:17:14,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430981830] [2022-01-18 05:17:14,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430981830] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:17:14,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926750000] [2022-01-18 05:17:14,015 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 05:17:14,015 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:17:14,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:17:14,016 INFO L229 MonitoredProcess]: Starting monitored process 238 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:17:14,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (238)] Waiting until timeout for monitored process [2022-01-18 05:17:14,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:17:14,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-18 05:17:14,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:17:14,616 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:17:14,616 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 102 [2022-01-18 05:17:15,414 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:17:15,415 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 221 treesize of output 193 [2022-01-18 05:17:15,417 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 193 treesize of output 165 [2022-01-18 05:17:16,602 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:17:16,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:17:17,347 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:17:17,347 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 180 treesize of output 164 [2022-01-18 05:17:17,895 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:17:17,895 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 101 treesize of output 95 [2022-01-18 05:17:17,900 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:17:17,900 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 87 treesize of output 81 [2022-01-18 05:17:17,949 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:17:17,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926750000] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:17:17,949 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:17:17,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:17:17,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936819558] [2022-01-18 05:17:17,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:17:17,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:17:17,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:17:17,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:17:17,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=625, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:17:17,949 INFO L87 Difference]: Start difference. First operand 364 states and 1056 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:17:18,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:17:18,765 INFO L93 Difference]: Finished difference Result 499 states and 1453 transitions. [2022-01-18 05:17:18,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 05:17:18,765 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:17:18,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:17:18,766 INFO L225 Difference]: With dead ends: 499 [2022-01-18 05:17:18,766 INFO L226 Difference]: Without dead ends: 492 [2022-01-18 05:17:18,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 23 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=140, Invalid=1120, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 05:17:18,766 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 48 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 112 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:17:18,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 309 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 271 Invalid, 0 Unknown, 112 Unchecked, 0.1s Time] [2022-01-18 05:17:18,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2022-01-18 05:17:18,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 366. [2022-01-18 05:17:18,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 365 states have (on average 2.904109589041096) internal successors, (1060), 365 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:17:18,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 1060 transitions. [2022-01-18 05:17:18,770 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 1060 transitions. Word has length 20 [2022-01-18 05:17:18,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:17:18,770 INFO L470 AbstractCegarLoop]: Abstraction has 366 states and 1060 transitions. [2022-01-18 05:17:18,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:17:18,770 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 1060 transitions. [2022-01-18 05:17:18,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:17:18,771 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:17:18,771 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] [2022-01-18 05:17:18,791 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (238)] Ended with exit code 0 [2022-01-18 05:17:18,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable427,238 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:17:18,971 INFO L402 AbstractCegarLoop]: === Iteration 429 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:17:18,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:17:18,972 INFO L85 PathProgramCache]: Analyzing trace with hash -2106198487, now seen corresponding path program 38 times [2022-01-18 05:17:18,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:17:18,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766011872] [2022-01-18 05:17:18,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:17:18,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:17:18,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:17:19,269 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:17:19,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:17:19,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766011872] [2022-01-18 05:17:19,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766011872] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:17:19,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820799383] [2022-01-18 05:17:19,269 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 05:17:19,269 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:17:19,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:17:19,270 INFO L229 MonitoredProcess]: Starting monitored process 239 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:17:19,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (239)] Waiting until timeout for monitored process [2022-01-18 05:17:19,294 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:17:19,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:17:19,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-18 05:17:19,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:17:19,990 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:17:19,991 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 123 treesize of output 105 [2022-01-18 05:17:21,307 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:17:21,308 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 197 treesize of output 173 [2022-01-18 05:17:21,310 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 173 treesize of output 149 [2022-01-18 05:17:21,902 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:17:21,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:17:22,639 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:17:22,639 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 252 treesize of output 232 [2022-01-18 05:17:23,572 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:17:23,572 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-01-18 05:17:23,577 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:17:23,577 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 87 treesize of output 81 [2022-01-18 05:17:23,626 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:17:23,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820799383] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:17:23,626 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:17:23,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:17:23,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977267967] [2022-01-18 05:17:23,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:17:23,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:17:23,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:17:23,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:17:23,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=616, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:17:23,627 INFO L87 Difference]: Start difference. First operand 366 states and 1060 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:17:23,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:17:23,893 INFO L93 Difference]: Finished difference Result 528 states and 1529 transitions. [2022-01-18 05:17:23,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 05:17:23,893 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:17:23,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:17:23,894 INFO L225 Difference]: With dead ends: 528 [2022-01-18 05:17:23,894 INFO L226 Difference]: Without dead ends: 521 [2022-01-18 05:17:23,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=94, Invalid=662, Unknown=0, NotChecked=0, Total=756 [2022-01-18 05:17:23,894 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 43 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 151 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:17:23,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 294 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 315 Invalid, 0 Unknown, 151 Unchecked, 0.1s Time] [2022-01-18 05:17:23,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2022-01-18 05:17:23,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 365. [2022-01-18 05:17:23,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 364 states have (on average 2.9065934065934065) internal successors, (1058), 364 states have internal predecessors, (1058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:17:23,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 1058 transitions. [2022-01-18 05:17:23,899 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 1058 transitions. Word has length 20 [2022-01-18 05:17:23,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:17:23,899 INFO L470 AbstractCegarLoop]: Abstraction has 365 states and 1058 transitions. [2022-01-18 05:17:23,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:17:23,899 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 1058 transitions. [2022-01-18 05:17:23,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:17:23,899 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:17:23,899 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:17:23,914 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (239)] Ended with exit code 0 [2022-01-18 05:17:24,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable428,239 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:17:24,100 INFO L402 AbstractCegarLoop]: === Iteration 430 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:17:24,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:17:24,100 INFO L85 PathProgramCache]: Analyzing trace with hash -2087280663, now seen corresponding path program 39 times [2022-01-18 05:17:24,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:17:24,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595270808] [2022-01-18 05:17:24,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:17:24,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:17:24,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:17:24,556 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:17:24,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:17:24,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595270808] [2022-01-18 05:17:24,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595270808] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:17:24,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224071738] [2022-01-18 05:17:24,557 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:17:24,557 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:17:24,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:17:24,557 INFO L229 MonitoredProcess]: Starting monitored process 240 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:17:24,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (240)] Waiting until timeout for monitored process [2022-01-18 05:17:24,581 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 05:17:24,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:17:24,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-18 05:17:24,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:17:25,104 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:17:25,104 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 147 treesize of output 127 [2022-01-18 05:17:26,773 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:17:26,774 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 315 treesize of output 275 [2022-01-18 05:17:26,776 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 275 treesize of output 235 [2022-01-18 05:17:28,228 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:17:28,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:17:29,512 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:17:29,512 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 230 treesize of output 216 [2022-01-18 05:17:30,547 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:17:30,547 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 101 treesize of output 95 [2022-01-18 05:17:30,552 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:17:30,552 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-01-18 05:17:30,609 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:17:30,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224071738] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:17:30,610 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:17:30,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:17:30,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147837858] [2022-01-18 05:17:30,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:17:30,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:17:30,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:17:30,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:17:30,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:17:30,610 INFO L87 Difference]: Start difference. First operand 365 states and 1058 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:17:31,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:17:31,457 INFO L93 Difference]: Finished difference Result 513 states and 1518 transitions. [2022-01-18 05:17:31,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 05:17:31,457 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:17:31,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:17:31,458 INFO L225 Difference]: With dead ends: 513 [2022-01-18 05:17:31,458 INFO L226 Difference]: Without dead ends: 506 [2022-01-18 05:17:31,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=104, Invalid=708, Unknown=0, NotChecked=0, Total=812 [2022-01-18 05:17:31,458 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 47 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:17:31,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 285 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 416 Invalid, 0 Unknown, 25 Unchecked, 0.2s Time] [2022-01-18 05:17:31,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2022-01-18 05:17:31,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 367. [2022-01-18 05:17:31,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 366 states have (on average 2.912568306010929) internal successors, (1066), 366 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:17:31,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 1066 transitions. [2022-01-18 05:17:31,462 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 1066 transitions. Word has length 20 [2022-01-18 05:17:31,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:17:31,462 INFO L470 AbstractCegarLoop]: Abstraction has 367 states and 1066 transitions. [2022-01-18 05:17:31,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:17:31,462 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 1066 transitions. [2022-01-18 05:17:31,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:17:31,463 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:17:31,463 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:17:31,478 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (240)] Ended with exit code 0 [2022-01-18 05:17:31,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable429,240 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:17:31,663 INFO L402 AbstractCegarLoop]: === Iteration 431 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:17:31,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:17:31,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1515825857, now seen corresponding path program 40 times [2022-01-18 05:17:31,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:17:31,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010897144] [2022-01-18 05:17:31,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:17:31,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:17:31,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:17:31,982 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:17:31,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:17:31,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010897144] [2022-01-18 05:17:31,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010897144] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:17:31,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431710881] [2022-01-18 05:17:31,982 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 05:17:31,982 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:17:31,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:17:31,983 INFO L229 MonitoredProcess]: Starting monitored process 241 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:17:31,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (241)] Waiting until timeout for monitored process [2022-01-18 05:17:32,006 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 05:17:32,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:17:32,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 05:17:32,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:17:32,391 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:17:32,392 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 106 [2022-01-18 05:17:33,477 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:17:33,477 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 135 [2022-01-18 05:17:33,479 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 135 treesize of output 109 [2022-01-18 05:17:33,790 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:17:33,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:17:34,460 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:17:34,460 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 133 treesize of output 121 [2022-01-18 05:17:34,736 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:17:34,736 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-01-18 05:17:34,741 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:17:34,741 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 87 treesize of output 81 [2022-01-18 05:17:34,790 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:17:34,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431710881] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:17:34,790 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:17:34,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:17:34,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786038942] [2022-01-18 05:17:34,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:17:34,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:17:34,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:17:34,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:17:34,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:17:34,791 INFO L87 Difference]: Start difference. First operand 367 states and 1066 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:17:34,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:17:34,977 INFO L93 Difference]: Finished difference Result 514 states and 1519 transitions. [2022-01-18 05:17:34,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 05:17:34,977 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:17:34,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:17:34,978 INFO L225 Difference]: With dead ends: 514 [2022-01-18 05:17:34,978 INFO L226 Difference]: Without dead ends: 507 [2022-01-18 05:17:34,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=91, Invalid=665, Unknown=0, NotChecked=0, Total=756 [2022-01-18 05:17:34,978 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 38 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 136 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:17:34,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 311 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 341 Invalid, 0 Unknown, 136 Unchecked, 0.1s Time] [2022-01-18 05:17:34,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2022-01-18 05:17:34,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 375. [2022-01-18 05:17:34,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 374 states have (on average 2.9197860962566846) internal successors, (1092), 374 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) [2022-01-18 05:17:34,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 1092 transitions. [2022-01-18 05:17:34,988 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 1092 transitions. Word has length 20 [2022-01-18 05:17:34,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:17:34,989 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 1092 transitions. [2022-01-18 05:17:34,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:17:34,989 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 1092 transitions. [2022-01-18 05:17:34,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:17:34,989 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:17:34,989 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:17:35,004 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (241)] Ended with exit code 0 [2022-01-18 05:17:35,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 241 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable430 [2022-01-18 05:17:35,190 INFO L402 AbstractCegarLoop]: === Iteration 432 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:17:35,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:17:35,191 INFO L85 PathProgramCache]: Analyzing trace with hash -542895235, now seen corresponding path program 41 times [2022-01-18 05:17:35,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:17:35,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925784981] [2022-01-18 05:17:35,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:17:35,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:17:35,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:17:35,546 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:17:35,546 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:17:35,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925784981] [2022-01-18 05:17:35,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925784981] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:17:35,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944818595] [2022-01-18 05:17:35,546 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 05:17:35,546 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:17:35,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:17:35,547 INFO L229 MonitoredProcess]: Starting monitored process 242 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:17:35,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (242)] Waiting until timeout for monitored process [2022-01-18 05:17:35,572 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:17:35,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:17:35,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 05:17:35,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:17:35,782 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 102 [2022-01-18 05:17:36,388 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 164 treesize of output 140 [2022-01-18 05:17:36,389 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 140 treesize of output 116 [2022-01-18 05:17:36,641 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:17:36,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:17:37,328 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:17:37,328 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 103 [2022-01-18 05:17:37,619 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 05:17:37,619 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 84 [2022-01-18 05:17:37,621 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 65 [2022-01-18 05:17:37,625 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:17:37,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944818595] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:17:37,625 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:17:37,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-01-18 05:17:37,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724098556] [2022-01-18 05:17:37,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:17:37,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-18 05:17:37,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:17:37,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-18 05:17:37,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=670, Unknown=0, NotChecked=0, Total=756 [2022-01-18 05:17:37,626 INFO L87 Difference]: Start difference. First operand 375 states and 1092 transitions. Second operand has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 28 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:17:40,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:17:40,023 INFO L93 Difference]: Finished difference Result 726 states and 2023 transitions. [2022-01-18 05:17:40,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-18 05:17:40,024 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 28 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:17:40,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:17:40,025 INFO L225 Difference]: With dead ends: 726 [2022-01-18 05:17:40,025 INFO L226 Difference]: Without dead ends: 696 [2022-01-18 05:17:40,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=306, Invalid=1500, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 05:17:40,025 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 279 mSDsluCounter, 781 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 1044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 05:17:40,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 341 Invalid, 1044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1009 Invalid, 0 Unknown, 4 Unchecked, 0.5s Time] [2022-01-18 05:17:40,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2022-01-18 05:17:40,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 363. [2022-01-18 05:17:40,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 362 states have (on average 2.9198895027624308) internal successors, (1057), 362 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:17:40,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 1057 transitions. [2022-01-18 05:17:40,031 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 1057 transitions. Word has length 20 [2022-01-18 05:17:40,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:17:40,031 INFO L470 AbstractCegarLoop]: Abstraction has 363 states and 1057 transitions. [2022-01-18 05:17:40,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 28 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:17:40,031 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 1057 transitions. [2022-01-18 05:17:40,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:17:40,031 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:17:40,031 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:17:40,047 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (242)] Ended with exit code 0 [2022-01-18 05:17:40,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 242 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable431 [2022-01-18 05:17:40,232 INFO L402 AbstractCegarLoop]: === Iteration 433 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:17:40,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:17:40,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1029570213, now seen corresponding path program 42 times [2022-01-18 05:17:40,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:17:40,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268744176] [2022-01-18 05:17:40,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:17:40,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:17:40,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:17:40,653 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:17:40,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:17:40,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268744176] [2022-01-18 05:17:40,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268744176] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:17:40,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808550420] [2022-01-18 05:17:40,653 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 05:17:40,653 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:17:40,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:17:40,654 INFO L229 MonitoredProcess]: Starting monitored process 243 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:17:40,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (243)] Waiting until timeout for monitored process [2022-01-18 05:17:40,677 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 05:17:40,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:17:40,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 05:17:40,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:17:41,067 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:17:41,067 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2022-01-18 05:17:41,764 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:17:41,765 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 208 treesize of output 178 [2022-01-18 05:17:41,767 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 178 treesize of output 148 [2022-01-18 05:17:42,519 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:17:42,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:17:43,226 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:17:43,226 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 136 treesize of output 124 [2022-01-18 05:17:43,650 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:17:43,650 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2022-01-18 05:17:43,655 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:17:43,655 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 93 treesize of output 85 [2022-01-18 05:17:43,705 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:17:43,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808550420] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:17:43,705 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:17:43,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:17:43,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704611574] [2022-01-18 05:17:43,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:17:43,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:17:43,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:17:43,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:17:43,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=632, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:17:43,706 INFO L87 Difference]: Start difference. First operand 363 states and 1057 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:17:44,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:17:44,581 INFO L93 Difference]: Finished difference Result 514 states and 1506 transitions. [2022-01-18 05:17:44,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 05:17:44,581 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:17:44,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:17:44,582 INFO L225 Difference]: With dead ends: 514 [2022-01-18 05:17:44,582 INFO L226 Difference]: Without dead ends: 507 [2022-01-18 05:17:44,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=130, Invalid=1060, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 05:17:44,583 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 67 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 84 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:17:44,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 309 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 389 Invalid, 0 Unknown, 84 Unchecked, 0.2s Time] [2022-01-18 05:17:44,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2022-01-18 05:17:44,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 367. [2022-01-18 05:17:44,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 366 states have (on average 2.9371584699453552) internal successors, (1075), 366 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:17:44,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 1075 transitions. [2022-01-18 05:17:44,587 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 1075 transitions. Word has length 20 [2022-01-18 05:17:44,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:17:44,587 INFO L470 AbstractCegarLoop]: Abstraction has 367 states and 1075 transitions. [2022-01-18 05:17:44,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:17:44,587 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 1075 transitions. [2022-01-18 05:17:44,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:17:44,587 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:17:44,587 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] [2022-01-18 05:17:44,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (243)] Forceful destruction successful, exit code 0 [2022-01-18 05:17:44,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 243 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable432 [2022-01-18 05:17:44,788 INFO L402 AbstractCegarLoop]: === Iteration 434 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:17:44,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:17:44,788 INFO L85 PathProgramCache]: Analyzing trace with hash -893743129, now seen corresponding path program 43 times [2022-01-18 05:17:44,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:17:44,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694097670] [2022-01-18 05:17:44,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:17:44,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:17:44,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:17:45,213 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:17:45,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:17:45,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694097670] [2022-01-18 05:17:45,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694097670] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:17:45,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682701700] [2022-01-18 05:17:45,214 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 05:17:45,214 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:17:45,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:17:45,223 INFO L229 MonitoredProcess]: Starting monitored process 244 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:17:45,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (244)] Waiting until timeout for monitored process [2022-01-18 05:17:45,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:17:45,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 33 conjunts are in the unsatisfiable core [2022-01-18 05:17:45,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:17:45,741 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:17:45,742 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 120 treesize of output 102 [2022-01-18 05:17:46,455 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:17:46,456 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 210 treesize of output 182 [2022-01-18 05:17:46,460 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 182 treesize of output 154 [2022-01-18 05:17:49,091 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:17:49,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:17:50,764 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:17:50,764 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 206 treesize of output 188 [2022-01-18 05:17:51,400 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:17:51,401 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 106 treesize of output 100 [2022-01-18 05:17:51,407 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:17:51,407 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 92 treesize of output 86 [2022-01-18 05:17:51,497 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:17:51,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682701700] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:17:51,497 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:17:51,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:17:51,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151806515] [2022-01-18 05:17:51,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:17:51,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:17:51,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:17:51,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:17:51,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:17:51,498 INFO L87 Difference]: Start difference. First operand 367 states and 1075 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:17:52,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:17:52,765 INFO L93 Difference]: Finished difference Result 502 states and 1499 transitions. [2022-01-18 05:17:52,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 05:17:52,766 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:17:52,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:17:52,767 INFO L225 Difference]: With dead ends: 502 [2022-01-18 05:17:52,767 INFO L226 Difference]: Without dead ends: 487 [2022-01-18 05:17:52,767 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=137, Invalid=1123, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 05:17:52,767 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 55 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 215 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:17:52,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 331 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 381 Invalid, 0 Unknown, 215 Unchecked, 0.2s Time] [2022-01-18 05:17:52,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2022-01-18 05:17:52,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 381. [2022-01-18 05:17:52,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 2.955263157894737) internal successors, (1123), 380 states have internal predecessors, (1123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:17:52,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1123 transitions. [2022-01-18 05:17:52,771 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1123 transitions. Word has length 20 [2022-01-18 05:17:52,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:17:52,771 INFO L470 AbstractCegarLoop]: Abstraction has 381 states and 1123 transitions. [2022-01-18 05:17:52,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:17:52,771 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1123 transitions. [2022-01-18 05:17:52,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:17:52,772 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:17:52,772 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:17:52,787 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (244)] Ended with exit code 0 [2022-01-18 05:17:52,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 244 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable433 [2022-01-18 05:17:52,972 INFO L402 AbstractCegarLoop]: === Iteration 435 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:17:52,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:17:52,972 INFO L85 PathProgramCache]: Analyzing trace with hash -61627669, now seen corresponding path program 44 times [2022-01-18 05:17:52,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:17:52,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398364740] [2022-01-18 05:17:52,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:17:52,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:17:52,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:17:53,398 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:17:53,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:17:53,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398364740] [2022-01-18 05:17:53,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398364740] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:17:53,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533882395] [2022-01-18 05:17:53,398 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 05:17:53,398 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:17:53,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:17:53,399 INFO L229 MonitoredProcess]: Starting monitored process 245 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:17:53,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (245)] Waiting until timeout for monitored process [2022-01-18 05:17:53,422 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:17:53,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:17:53,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 05:17:53,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:17:53,802 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:17:53,802 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 102 [2022-01-18 05:17:54,500 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:17:54,500 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 216 treesize of output 186 [2022-01-18 05:17:54,502 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 186 treesize of output 156 [2022-01-18 05:17:55,207 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:17:55,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:17:55,878 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:17:55,878 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 137 treesize of output 125 [2022-01-18 05:17:56,161 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:17:56,161 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-01-18 05:17:56,165 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:17:56,166 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-01-18 05:17:56,219 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:17:56,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533882395] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:17:56,219 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:17:56,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:17:56,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765303119] [2022-01-18 05:17:56,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:17:56,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:17:56,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:17:56,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:17:56,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=632, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:17:56,220 INFO L87 Difference]: Start difference. First operand 381 states and 1123 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:17:57,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:17:57,191 INFO L93 Difference]: Finished difference Result 501 states and 1497 transitions. [2022-01-18 05:17:57,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 05:17:57,191 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:17:57,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:17:57,192 INFO L225 Difference]: With dead ends: 501 [2022-01-18 05:17:57,192 INFO L226 Difference]: Without dead ends: 494 [2022-01-18 05:17:57,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=132, Invalid=1128, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 05:17:57,192 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 46 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 143 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:17:57,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 415 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 507 Invalid, 0 Unknown, 143 Unchecked, 0.2s Time] [2022-01-18 05:17:57,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2022-01-18 05:17:57,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 381. [2022-01-18 05:17:57,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 2.955263157894737) internal successors, (1123), 380 states have internal predecessors, (1123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:17:57,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1123 transitions. [2022-01-18 05:17:57,196 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1123 transitions. Word has length 20 [2022-01-18 05:17:57,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:17:57,196 INFO L470 AbstractCegarLoop]: Abstraction has 381 states and 1123 transitions. [2022-01-18 05:17:57,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:17:57,196 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1123 transitions. [2022-01-18 05:17:57,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:17:57,197 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:17:57,197 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:17:57,213 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (245)] Ended with exit code 0 [2022-01-18 05:17:57,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable434,245 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:17:57,397 INFO L402 AbstractCegarLoop]: === Iteration 436 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:17:57,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:17:57,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1032195989, now seen corresponding path program 45 times [2022-01-18 05:17:57,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:17:57,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412566688] [2022-01-18 05:17:57,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:17:57,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:17:57,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:17:57,818 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:17:57,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:17:57,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412566688] [2022-01-18 05:17:57,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412566688] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:17:57,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652084423] [2022-01-18 05:17:57,818 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:17:57,818 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:17:57,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:17:57,819 INFO L229 MonitoredProcess]: Starting monitored process 246 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:17:57,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (246)] Waiting until timeout for monitored process [2022-01-18 05:17:57,843 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 05:17:57,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:17:57,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-18 05:17:57,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:17:58,371 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:17:58,372 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2022-01-18 05:17:59,611 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:17:59,611 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 281 treesize of output 245 [2022-01-18 05:17:59,614 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 245 treesize of output 209 [2022-01-18 05:18:00,820 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:18:00,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:18:02,063 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:18:02,063 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 256 treesize of output 236 [2022-01-18 05:18:02,853 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:18:02,853 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-01-18 05:18:02,859 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:18:02,859 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-01-18 05:18:02,901 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:18:02,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652084423] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:18:02,901 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:18:02,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:18:02,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930169155] [2022-01-18 05:18:02,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:18:02,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:18:02,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:18:02,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:18:02,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:18:02,902 INFO L87 Difference]: Start difference. First operand 381 states and 1123 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:18:03,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:18:03,423 INFO L93 Difference]: Finished difference Result 505 states and 1507 transitions. [2022-01-18 05:18:03,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 05:18:03,423 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:18:03,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:18:03,424 INFO L225 Difference]: With dead ends: 505 [2022-01-18 05:18:03,424 INFO L226 Difference]: Without dead ends: 498 [2022-01-18 05:18:03,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=104, Invalid=708, Unknown=0, NotChecked=0, Total=812 [2022-01-18 05:18:03,424 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 46 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 88 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:18:03,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 264 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 257 Invalid, 0 Unknown, 88 Unchecked, 0.1s Time] [2022-01-18 05:18:03,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2022-01-18 05:18:03,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 381. [2022-01-18 05:18:03,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 2.955263157894737) internal successors, (1123), 380 states have internal predecessors, (1123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:18:03,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1123 transitions. [2022-01-18 05:18:03,428 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1123 transitions. Word has length 20 [2022-01-18 05:18:03,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:18:03,428 INFO L470 AbstractCegarLoop]: Abstraction has 381 states and 1123 transitions. [2022-01-18 05:18:03,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:18:03,428 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1123 transitions. [2022-01-18 05:18:03,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:18:03,429 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:18:03,429 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:18:03,444 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (246)] Ended with exit code 0 [2022-01-18 05:18:03,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 246 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable435 [2022-01-18 05:18:03,629 INFO L402 AbstractCegarLoop]: === Iteration 437 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:18:03,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:18:03,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1804137869, now seen corresponding path program 46 times [2022-01-18 05:18:03,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:18:03,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146243995] [2022-01-18 05:18:03,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:18:03,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:18:03,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:18:03,983 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:18:03,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:18:03,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146243995] [2022-01-18 05:18:03,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146243995] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:18:03,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592422671] [2022-01-18 05:18:03,984 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 05:18:03,984 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:18:03,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:18:03,985 INFO L229 MonitoredProcess]: Starting monitored process 247 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:18:03,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (247)] Waiting until timeout for monitored process [2022-01-18 05:18:04,020 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 05:18:04,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:18:04,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 05:18:04,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:18:04,486 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:18:04,487 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2022-01-18 05:18:05,333 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:18:05,334 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 180 treesize of output 156 [2022-01-18 05:18:05,336 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 156 treesize of output 132 [2022-01-18 05:18:05,637 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:18:05,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:18:06,255 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:18:06,256 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 138 treesize of output 126 [2022-01-18 05:18:06,644 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:18:06,645 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 101 treesize of output 95 [2022-01-18 05:18:06,649 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:18:06,649 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 87 treesize of output 81 [2022-01-18 05:18:06,692 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:18:06,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592422671] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:18:06,693 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:18:06,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:18:06,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547590910] [2022-01-18 05:18:06,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:18:06,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:18:06,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:18:06,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:18:06,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=625, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:18:06,693 INFO L87 Difference]: Start difference. First operand 381 states and 1123 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:18:07,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:18:07,323 INFO L93 Difference]: Finished difference Result 506 states and 1499 transitions. [2022-01-18 05:18:07,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 05:18:07,323 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:18:07,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:18:07,324 INFO L225 Difference]: With dead ends: 506 [2022-01-18 05:18:07,324 INFO L226 Difference]: Without dead ends: 499 [2022-01-18 05:18:07,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=133, Invalid=1057, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 05:18:07,324 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 50 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 151 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:18:07,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 290 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 283 Invalid, 0 Unknown, 151 Unchecked, 0.1s Time] [2022-01-18 05:18:07,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2022-01-18 05:18:07,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 389. [2022-01-18 05:18:07,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 2.9561855670103094) internal successors, (1147), 388 states have internal predecessors, (1147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:18:07,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1147 transitions. [2022-01-18 05:18:07,328 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1147 transitions. Word has length 20 [2022-01-18 05:18:07,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:18:07,328 INFO L470 AbstractCegarLoop]: Abstraction has 389 states and 1147 transitions. [2022-01-18 05:18:07,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:18:07,329 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1147 transitions. [2022-01-18 05:18:07,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:18:07,329 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:18:07,329 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:18:07,344 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (247)] Forceful destruction successful, exit code 0 [2022-01-18 05:18:07,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable436,247 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:18:07,529 INFO L402 AbstractCegarLoop]: === Iteration 438 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:18:07,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:18:07,530 INFO L85 PathProgramCache]: Analyzing trace with hash 130392613, now seen corresponding path program 47 times [2022-01-18 05:18:07,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:18:07,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669804067] [2022-01-18 05:18:07,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:18:07,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:18:07,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:18:07,875 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:18:07,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:18:07,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669804067] [2022-01-18 05:18:07,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669804067] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:18:07,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718760782] [2022-01-18 05:18:07,876 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 05:18:07,876 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:18:07,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:18:07,877 INFO L229 MonitoredProcess]: Starting monitored process 248 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:18:07,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (248)] Waiting until timeout for monitored process [2022-01-18 05:18:07,900 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:18:07,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:18:07,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 05:18:07,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:18:08,155 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-01-18 05:18:08,556 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 159 treesize of output 135 [2022-01-18 05:18:08,557 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 135 treesize of output 111 [2022-01-18 05:18:08,875 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:18:08,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:18:09,475 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:18:09,475 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 123 treesize of output 111 [2022-01-18 05:18:09,805 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 05:18:09,805 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 97 treesize of output 84 [2022-01-18 05:18:09,807 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 65 [2022-01-18 05:18:09,811 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:18:09,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718760782] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:18:09,811 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:18:09,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-01-18 05:18:09,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976229232] [2022-01-18 05:18:09,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:18:09,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-18 05:18:09,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:18:09,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-18 05:18:09,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=676, Unknown=0, NotChecked=0, Total=756 [2022-01-18 05:18:09,812 INFO L87 Difference]: Start difference. First operand 389 states and 1147 transitions. Second operand has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 28 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:18:12,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:18:12,119 INFO L93 Difference]: Finished difference Result 638 states and 1807 transitions. [2022-01-18 05:18:12,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 05:18:12,119 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 28 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:18:12,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:18:12,120 INFO L225 Difference]: With dead ends: 638 [2022-01-18 05:18:12,120 INFO L226 Difference]: Without dead ends: 616 [2022-01-18 05:18:12,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=286, Invalid=1694, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 05:18:12,121 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 213 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 822 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 50 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 05:18:12,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [213 Valid, 342 Invalid, 896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 822 Invalid, 0 Unknown, 50 Unchecked, 0.4s Time] [2022-01-18 05:18:12,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2022-01-18 05:18:12,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 389. [2022-01-18 05:18:12,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 2.9536082474226806) internal successors, (1146), 388 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) [2022-01-18 05:18:12,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1146 transitions. [2022-01-18 05:18:12,125 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1146 transitions. Word has length 20 [2022-01-18 05:18:12,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:18:12,126 INFO L470 AbstractCegarLoop]: Abstraction has 389 states and 1146 transitions. [2022-01-18 05:18:12,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 28 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:18:12,126 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1146 transitions. [2022-01-18 05:18:12,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:18:12,126 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:18:12,126 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:18:12,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (248)] Forceful destruction successful, exit code 0 [2022-01-18 05:18:12,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable437,248 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:18:12,327 INFO L402 AbstractCegarLoop]: === Iteration 439 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:18:12,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:18:12,327 INFO L85 PathProgramCache]: Analyzing trace with hash 608712717, now seen corresponding path program 48 times [2022-01-18 05:18:12,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:18:12,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62983520] [2022-01-18 05:18:12,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:18:12,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:18:12,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:18:12,716 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:18:12,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:18:12,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62983520] [2022-01-18 05:18:12,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62983520] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:18:12,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222650286] [2022-01-18 05:18:12,717 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 05:18:12,717 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:18:12,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:18:12,717 INFO L229 MonitoredProcess]: Starting monitored process 249 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:18:12,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (249)] Waiting until timeout for monitored process [2022-01-18 05:18:12,741 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 05:18:12,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:18:12,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 05:18:12,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:18:13,203 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:18:13,204 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2022-01-18 05:18:13,885 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:18:13,885 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 221 treesize of output 193 [2022-01-18 05:18:13,888 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 193 treesize of output 165 [2022-01-18 05:18:14,554 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:18:14,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:18:15,145 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:18:15,145 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 140 treesize of output 128 [2022-01-18 05:18:15,563 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:18:15,564 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 109 treesize of output 101 [2022-01-18 05:18:15,569 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:18:15,569 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2022-01-18 05:18:15,624 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:18:15,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222650286] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:18:15,625 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:18:15,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:18:15,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738496785] [2022-01-18 05:18:15,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:18:15,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:18:15,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:18:15,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:18:15,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:18:15,625 INFO L87 Difference]: Start difference. First operand 389 states and 1146 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:18:16,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:18:16,872 INFO L93 Difference]: Finished difference Result 530 states and 1581 transitions. [2022-01-18 05:18:16,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-18 05:18:16,872 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:18:16,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:18:16,873 INFO L225 Difference]: With dead ends: 530 [2022-01-18 05:18:16,873 INFO L226 Difference]: Without dead ends: 523 [2022-01-18 05:18:16,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=184, Invalid=1298, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 05:18:16,873 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 70 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 367 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:18:16,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 327 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 306 Invalid, 0 Unknown, 367 Unchecked, 0.1s Time] [2022-01-18 05:18:16,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2022-01-18 05:18:16,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 397. [2022-01-18 05:18:16,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 396 states have (on average 2.957070707070707) internal successors, (1171), 396 states have internal predecessors, (1171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:18:16,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 1171 transitions. [2022-01-18 05:18:16,877 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 1171 transitions. Word has length 20 [2022-01-18 05:18:16,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:18:16,878 INFO L470 AbstractCegarLoop]: Abstraction has 397 states and 1171 transitions. [2022-01-18 05:18:16,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:18:16,878 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 1171 transitions. [2022-01-18 05:18:16,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:18:16,878 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:18:16,878 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:18:16,893 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (249)] Forceful destruction successful, exit code 0 [2022-01-18 05:18:17,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 249 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable438 [2022-01-18 05:18:17,079 INFO L402 AbstractCegarLoop]: === Iteration 440 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:18:17,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:18:17,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1568485079, now seen corresponding path program 49 times [2022-01-18 05:18:17,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:18:17,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458405296] [2022-01-18 05:18:17,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:18:17,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:18:17,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:18:17,447 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:18:17,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:18:17,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458405296] [2022-01-18 05:18:17,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458405296] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:18:17,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561209026] [2022-01-18 05:18:17,447 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 05:18:17,447 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:18:17,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:18:17,448 INFO L229 MonitoredProcess]: Starting monitored process 250 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:18:17,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (250)] Waiting until timeout for monitored process [2022-01-18 05:18:17,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:18:17,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 05:18:17,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:18:17,934 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:18:17,934 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 120 treesize of output 102 [2022-01-18 05:18:18,390 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:18:18,390 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 215 treesize of output 187 [2022-01-18 05:18:18,393 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 187 treesize of output 159 [2022-01-18 05:18:19,053 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:18:19,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:18:19,696 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:18:19,696 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 138 treesize of output 126 [2022-01-18 05:18:20,128 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:18:20,128 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 109 treesize of output 101 [2022-01-18 05:18:20,133 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:18:20,133 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2022-01-18 05:18:20,180 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:18:20,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561209026] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:18:20,180 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:18:20,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:18:20,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310448111] [2022-01-18 05:18:20,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:18:20,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:18:20,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:18:20,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:18:20,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:18:20,181 INFO L87 Difference]: Start difference. First operand 397 states and 1171 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:18:21,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:18:21,514 INFO L93 Difference]: Finished difference Result 535 states and 1578 transitions. [2022-01-18 05:18:21,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 05:18:21,514 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:18:21,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:18:21,515 INFO L225 Difference]: With dead ends: 535 [2022-01-18 05:18:21,515 INFO L226 Difference]: Without dead ends: 528 [2022-01-18 05:18:21,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=166, Invalid=1166, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 05:18:21,515 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 80 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 273 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:18:21,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 384 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 496 Invalid, 0 Unknown, 273 Unchecked, 0.2s Time] [2022-01-18 05:18:21,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2022-01-18 05:18:21,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 407. [2022-01-18 05:18:21,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 406 states have (on average 2.977832512315271) internal successors, (1209), 406 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:18:21,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 1209 transitions. [2022-01-18 05:18:21,520 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 1209 transitions. Word has length 20 [2022-01-18 05:18:21,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:18:21,520 INFO L470 AbstractCegarLoop]: Abstraction has 407 states and 1209 transitions. [2022-01-18 05:18:21,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:18:21,520 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 1209 transitions. [2022-01-18 05:18:21,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:18:21,520 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:18:21,520 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:18:21,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (250)] Forceful destruction successful, exit code 0 [2022-01-18 05:18:21,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable439,250 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:18:21,723 INFO L402 AbstractCegarLoop]: === Iteration 441 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:18:21,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:18:21,723 INFO L85 PathProgramCache]: Analyzing trace with hash 151047919, now seen corresponding path program 50 times [2022-01-18 05:18:21,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:18:21,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233968787] [2022-01-18 05:18:21,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:18:21,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:18:21,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:18:22,078 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:18:22,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:18:22,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233968787] [2022-01-18 05:18:22,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233968787] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:18:22,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324813700] [2022-01-18 05:18:22,078 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 05:18:22,078 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:18:22,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:18:22,079 INFO L229 MonitoredProcess]: Starting monitored process 251 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:18:22,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (251)] Waiting until timeout for monitored process [2022-01-18 05:18:22,103 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:18:22,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:18:22,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-18 05:18:22,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:18:22,661 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:18:22,661 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 122 treesize of output 104 [2022-01-18 05:18:23,179 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:18:23,179 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 208 treesize of output 178 [2022-01-18 05:18:23,182 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 178 treesize of output 148 [2022-01-18 05:18:24,745 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:18:24,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:18:25,664 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:18:25,664 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 163 treesize of output 149 [2022-01-18 05:18:26,211 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:18:26,212 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-01-18 05:18:26,216 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:18:26,216 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 87 treesize of output 81 [2022-01-18 05:18:26,265 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:18:26,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324813700] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:18:26,265 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:18:26,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:18:26,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417610865] [2022-01-18 05:18:26,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:18:26,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:18:26,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:18:26,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:18:26,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=609, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:18:26,266 INFO L87 Difference]: Start difference. First operand 407 states and 1209 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:18:26,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:18:26,653 INFO L93 Difference]: Finished difference Result 526 states and 1573 transitions. [2022-01-18 05:18:26,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 05:18:26,654 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:18:26,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:18:26,654 INFO L225 Difference]: With dead ends: 526 [2022-01-18 05:18:26,654 INFO L226 Difference]: Without dead ends: 511 [2022-01-18 05:18:26,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=113, Invalid=699, Unknown=0, NotChecked=0, Total=812 [2022-01-18 05:18:26,655 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 36 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 118 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:18:26,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 286 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 145 Invalid, 0 Unknown, 118 Unchecked, 0.1s Time] [2022-01-18 05:18:26,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2022-01-18 05:18:26,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 409. [2022-01-18 05:18:26,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 408 states have (on average 2.9877450980392157) internal successors, (1219), 408 states have internal predecessors, (1219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:18:26,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 1219 transitions. [2022-01-18 05:18:26,659 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 1219 transitions. Word has length 20 [2022-01-18 05:18:26,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:18:26,659 INFO L470 AbstractCegarLoop]: Abstraction has 409 states and 1219 transitions. [2022-01-18 05:18:26,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:18:26,659 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 1219 transitions. [2022-01-18 05:18:26,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:18:26,660 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:18:26,660 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:18:26,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (251)] Forceful destruction successful, exit code 0 [2022-01-18 05:18:26,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable440,251 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:18:26,860 INFO L402 AbstractCegarLoop]: === Iteration 442 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:18:26,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:18:26,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1542709595, now seen corresponding path program 51 times [2022-01-18 05:18:26,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:18:26,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69906835] [2022-01-18 05:18:26,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:18:26,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:18:26,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:18:27,240 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:18:27,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:18:27,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69906835] [2022-01-18 05:18:27,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69906835] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:18:27,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620045828] [2022-01-18 05:18:27,240 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:18:27,240 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:18:27,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:18:27,241 INFO L229 MonitoredProcess]: Starting monitored process 252 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:18:27,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (252)] Waiting until timeout for monitored process [2022-01-18 05:18:27,264 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 05:18:27,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:18:27,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 05:18:27,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:18:27,732 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:18:27,733 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 120 treesize of output 102 [2022-01-18 05:18:28,209 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:18:28,210 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 203 treesize of output 175 [2022-01-18 05:18:28,212 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 175 treesize of output 147 [2022-01-18 05:18:28,907 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:18:28,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:18:29,532 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:18:29,532 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 149 treesize of output 135 [2022-01-18 05:18:29,934 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:18:29,934 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 101 [2022-01-18 05:18:29,939 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:18:29,939 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 85 [2022-01-18 05:18:29,996 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:18:29,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620045828] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:18:29,996 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:18:29,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:18:29,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79953317] [2022-01-18 05:18:29,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:18:29,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:18:29,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:18:29,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:18:29,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:18:29,997 INFO L87 Difference]: Start difference. First operand 409 states and 1219 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:18:30,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:18:30,999 INFO L93 Difference]: Finished difference Result 566 states and 1673 transitions. [2022-01-18 05:18:30,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 05:18:30,999 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:18:30,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:18:31,000 INFO L225 Difference]: With dead ends: 566 [2022-01-18 05:18:31,000 INFO L226 Difference]: Without dead ends: 559 [2022-01-18 05:18:31,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=157, Invalid=1033, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 05:18:31,000 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 75 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 257 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:18:31,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 348 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 437 Invalid, 0 Unknown, 257 Unchecked, 0.2s Time] [2022-01-18 05:18:31,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2022-01-18 05:18:31,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 413. [2022-01-18 05:18:31,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 412 states have (on average 2.9927184466019416) internal successors, (1233), 412 states have internal predecessors, (1233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:18:31,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 1233 transitions. [2022-01-18 05:18:31,005 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 1233 transitions. Word has length 20 [2022-01-18 05:18:31,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:18:31,005 INFO L470 AbstractCegarLoop]: Abstraction has 413 states and 1233 transitions. [2022-01-18 05:18:31,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:18:31,005 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 1233 transitions. [2022-01-18 05:18:31,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:18:31,006 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:18:31,006 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] [2022-01-18 05:18:31,021 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (252)] Ended with exit code 0 [2022-01-18 05:18:31,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 252 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable441 [2022-01-18 05:18:31,206 INFO L402 AbstractCegarLoop]: === Iteration 443 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:18:31,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:18:31,206 INFO L85 PathProgramCache]: Analyzing trace with hash 690111773, now seen corresponding path program 52 times [2022-01-18 05:18:31,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:18:31,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540634416] [2022-01-18 05:18:31,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:18:31,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:18:31,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:18:31,585 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:18:31,585 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:18:31,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540634416] [2022-01-18 05:18:31,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540634416] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:18:31,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738029131] [2022-01-18 05:18:31,585 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 05:18:31,585 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:18:31,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:18:31,586 INFO L229 MonitoredProcess]: Starting monitored process 253 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:18:31,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (253)] Waiting until timeout for monitored process [2022-01-18 05:18:31,610 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 05:18:31,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:18:31,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 05:18:31,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:18:32,160 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:18:32,161 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 122 treesize of output 104 [2022-01-18 05:18:32,631 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:18:32,631 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 202 treesize of output 174 [2022-01-18 05:18:32,634 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 174 treesize of output 146 [2022-01-18 05:18:33,201 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:18:33,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:18:33,785 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:18:33,786 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 142 treesize of output 130 [2022-01-18 05:18:34,272 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:18:34,272 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 109 treesize of output 101 [2022-01-18 05:18:34,277 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:18:34,277 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 93 treesize of output 85 [2022-01-18 05:18:34,328 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:18:34,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738029131] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:18:34,328 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:18:34,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:18:34,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800237116] [2022-01-18 05:18:34,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:18:34,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:18:34,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:18:34,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:18:34,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:18:34,329 INFO L87 Difference]: Start difference. First operand 413 states and 1233 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:18:35,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:18:35,942 INFO L93 Difference]: Finished difference Result 679 states and 2019 transitions. [2022-01-18 05:18:35,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 05:18:35,942 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:18:35,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:18:35,943 INFO L225 Difference]: With dead ends: 679 [2022-01-18 05:18:35,943 INFO L226 Difference]: Without dead ends: 665 [2022-01-18 05:18:35,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=188, Invalid=1294, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 05:18:35,944 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 86 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 253 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:18:35,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 428 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 400 Invalid, 0 Unknown, 253 Unchecked, 0.2s Time] [2022-01-18 05:18:35,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2022-01-18 05:18:35,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 414. [2022-01-18 05:18:35,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 413 states have (on average 2.990314769975787) internal successors, (1235), 413 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:18:35,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 1235 transitions. [2022-01-18 05:18:35,949 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 1235 transitions. Word has length 20 [2022-01-18 05:18:35,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:18:35,949 INFO L470 AbstractCegarLoop]: Abstraction has 414 states and 1235 transitions. [2022-01-18 05:18:35,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:18:35,949 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 1235 transitions. [2022-01-18 05:18:35,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:18:35,950 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:18:35,950 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:18:35,964 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (253)] Ended with exit code 0 [2022-01-18 05:18:36,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable442,253 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:18:36,150 INFO L402 AbstractCegarLoop]: === Iteration 444 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:18:36,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:18:36,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1436088215, now seen corresponding path program 53 times [2022-01-18 05:18:36,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:18:36,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729731052] [2022-01-18 05:18:36,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:18:36,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:18:36,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:18:36,552 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:18:36,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:18:36,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729731052] [2022-01-18 05:18:36,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729731052] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:18:36,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720213396] [2022-01-18 05:18:36,553 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 05:18:36,553 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:18:36,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:18:36,554 INFO L229 MonitoredProcess]: Starting monitored process 254 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:18:36,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (254)] Waiting until timeout for monitored process [2022-01-18 05:18:36,578 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:18:36,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:18:36,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 05:18:36,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:18:36,855 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-01-18 05:18:37,090 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 210 treesize of output 182 [2022-01-18 05:18:37,092 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 182 treesize of output 154 [2022-01-18 05:18:37,742 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:18:37,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:18:38,253 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:18:38,253 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 113 [2022-01-18 05:18:38,641 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 05:18:38,641 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 84 [2022-01-18 05:18:38,642 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 65 [2022-01-18 05:18:38,647 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:18:38,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720213396] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:18:38,647 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:18:38,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-01-18 05:18:38,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453179752] [2022-01-18 05:18:38,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:18:38,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-18 05:18:38,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:18:38,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-18 05:18:38,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=675, Unknown=0, NotChecked=0, Total=756 [2022-01-18 05:18:38,648 INFO L87 Difference]: Start difference. First operand 414 states and 1235 transitions. Second operand has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 28 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:18:41,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:18:41,289 INFO L93 Difference]: Finished difference Result 724 states and 2036 transitions. [2022-01-18 05:18:41,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 05:18:41,289 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 28 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:18:41,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:18:41,290 INFO L225 Difference]: With dead ends: 724 [2022-01-18 05:18:41,290 INFO L226 Difference]: Without dead ends: 694 [2022-01-18 05:18:41,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=284, Invalid=1696, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 05:18:41,290 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 217 mSDsluCounter, 978 mSDsCounter, 0 mSdLazyCounter, 1288 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 1322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 05:18:41,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [217 Valid, 441 Invalid, 1322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1288 Invalid, 0 Unknown, 4 Unchecked, 0.6s Time] [2022-01-18 05:18:41,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2022-01-18 05:18:41,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 409. [2022-01-18 05:18:41,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 408 states have (on average 3.0049019607843137) internal successors, (1226), 408 states have internal predecessors, (1226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:18:41,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 1226 transitions. [2022-01-18 05:18:41,296 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 1226 transitions. Word has length 20 [2022-01-18 05:18:41,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:18:41,296 INFO L470 AbstractCegarLoop]: Abstraction has 409 states and 1226 transitions. [2022-01-18 05:18:41,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 28 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:18:41,296 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 1226 transitions. [2022-01-18 05:18:41,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:18:41,296 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:18:41,296 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:18:41,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (254)] Forceful destruction successful, exit code 0 [2022-01-18 05:18:41,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 254 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable443 [2022-01-18 05:18:41,497 INFO L402 AbstractCegarLoop]: === Iteration 445 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:18:41,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:18:41,497 INFO L85 PathProgramCache]: Analyzing trace with hash -864633409, now seen corresponding path program 54 times [2022-01-18 05:18:41,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:18:41,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781306876] [2022-01-18 05:18:41,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:18:41,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:18:41,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:18:41,897 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:18:41,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:18:41,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781306876] [2022-01-18 05:18:41,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781306876] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:18:41,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638272415] [2022-01-18 05:18:41,897 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 05:18:41,897 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:18:41,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:18:41,898 INFO L229 MonitoredProcess]: Starting monitored process 255 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:18:41,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (255)] Waiting until timeout for monitored process [2022-01-18 05:18:41,922 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 05:18:41,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:18:41,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-18 05:18:41,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:18:42,559 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:18:42,560 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 101 [2022-01-18 05:18:43,366 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:18:43,367 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 198 treesize of output 172 [2022-01-18 05:18:43,369 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 172 treesize of output 146 [2022-01-18 05:18:44,391 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:18:44,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:18:45,129 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:18:45,129 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 186 treesize of output 168 [2022-01-18 05:18:45,717 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:18:45,718 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-01-18 05:18:45,723 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:18:45,723 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-01-18 05:18:45,776 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:18:45,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638272415] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:18:45,776 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:18:45,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:18:45,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372523838] [2022-01-18 05:18:45,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:18:45,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:18:45,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:18:45,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:18:45,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=625, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:18:45,777 INFO L87 Difference]: Start difference. First operand 409 states and 1226 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:18:46,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:18:46,693 INFO L93 Difference]: Finished difference Result 545 states and 1629 transitions. [2022-01-18 05:18:46,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 05:18:46,694 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:18:46,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:18:46,695 INFO L225 Difference]: With dead ends: 545 [2022-01-18 05:18:46,695 INFO L226 Difference]: Without dead ends: 538 [2022-01-18 05:18:46,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=140, Invalid=1120, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 05:18:46,695 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 68 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 407 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:18:46,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 387 Invalid, 824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 415 Invalid, 0 Unknown, 407 Unchecked, 0.2s Time] [2022-01-18 05:18:46,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2022-01-18 05:18:46,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 412. [2022-01-18 05:18:46,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 411 states have (on average 2.997566909975669) internal successors, (1232), 411 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:18:46,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 1232 transitions. [2022-01-18 05:18:46,700 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 1232 transitions. Word has length 20 [2022-01-18 05:18:46,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:18:46,700 INFO L470 AbstractCegarLoop]: Abstraction has 412 states and 1232 transitions. [2022-01-18 05:18:46,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:18:46,700 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 1232 transitions. [2022-01-18 05:18:46,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:18:46,700 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:18:46,700 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:18:46,715 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (255)] Ended with exit code 0 [2022-01-18 05:18:46,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 255 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable444 [2022-01-18 05:18:46,901 INFO L402 AbstractCegarLoop]: === Iteration 446 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:18:46,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:18:46,901 INFO L85 PathProgramCache]: Analyzing trace with hash 108297213, now seen corresponding path program 55 times [2022-01-18 05:18:46,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:18:46,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415961480] [2022-01-18 05:18:46,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:18:46,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:18:46,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:18:47,204 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:18:47,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:18:47,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415961480] [2022-01-18 05:18:47,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415961480] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:18:47,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776488981] [2022-01-18 05:18:47,204 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 05:18:47,204 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:18:47,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:18:47,206 INFO L229 MonitoredProcess]: Starting monitored process 256 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:18:47,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (256)] Waiting until timeout for monitored process [2022-01-18 05:18:47,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:18:47,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-18 05:18:47,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:18:47,830 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:18:47,830 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 124 treesize of output 106 [2022-01-18 05:18:49,091 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:18:49,091 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 226 treesize of output 196 [2022-01-18 05:18:49,094 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 196 treesize of output 166 [2022-01-18 05:18:50,068 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:18:50,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:18:50,854 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:18:50,854 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 186 treesize of output 168 [2022-01-18 05:18:51,381 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:18:51,381 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 101 treesize of output 95 [2022-01-18 05:18:51,386 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:18:51,386 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-01-18 05:18:51,441 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:18:51,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776488981] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:18:51,441 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:18:51,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:18:51,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766873446] [2022-01-18 05:18:51,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:18:51,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:18:51,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:18:51,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:18:51,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=616, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:18:51,442 INFO L87 Difference]: Start difference. First operand 412 states and 1232 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:18:51,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:18:51,634 INFO L93 Difference]: Finished difference Result 536 states and 1602 transitions. [2022-01-18 05:18:51,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 05:18:51,635 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:18:51,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:18:51,636 INFO L225 Difference]: With dead ends: 536 [2022-01-18 05:18:51,636 INFO L226 Difference]: Without dead ends: 533 [2022-01-18 05:18:51,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=94, Invalid=662, Unknown=0, NotChecked=0, Total=756 [2022-01-18 05:18:51,636 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 43 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 72 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:18:51,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 319 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 272 Invalid, 0 Unknown, 72 Unchecked, 0.1s Time] [2022-01-18 05:18:51,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2022-01-18 05:18:51,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 412. [2022-01-18 05:18:51,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 411 states have (on average 2.997566909975669) internal successors, (1232), 411 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:18:51,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 1232 transitions. [2022-01-18 05:18:51,640 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 1232 transitions. Word has length 20 [2022-01-18 05:18:51,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:18:51,641 INFO L470 AbstractCegarLoop]: Abstraction has 412 states and 1232 transitions. [2022-01-18 05:18:51,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:18:51,641 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 1232 transitions. [2022-01-18 05:18:51,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:18:51,641 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:18:51,641 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:18:51,656 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (256)] Ended with exit code 0 [2022-01-18 05:18:51,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 256 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable445 [2022-01-18 05:18:51,842 INFO L402 AbstractCegarLoop]: === Iteration 447 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:18:51,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:18:51,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1160751655, now seen corresponding path program 56 times [2022-01-18 05:18:51,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:18:51,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705139348] [2022-01-18 05:18:51,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:18:51,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:18:51,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:18:52,308 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:18:52,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:18:52,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705139348] [2022-01-18 05:18:52,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705139348] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:18:52,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991566997] [2022-01-18 05:18:52,309 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 05:18:52,309 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:18:52,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:18:52,310 INFO L229 MonitoredProcess]: Starting monitored process 257 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:18:52,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (257)] Waiting until timeout for monitored process [2022-01-18 05:18:52,333 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:18:52,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:18:52,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 05:18:52,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:18:52,818 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:18:52,819 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 122 treesize of output 104 [2022-01-18 05:18:53,747 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:18:53,747 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 166 treesize of output 142 [2022-01-18 05:18:53,749 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 118 [2022-01-18 05:18:54,123 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:18:54,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:18:54,702 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:18:54,702 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 136 treesize of output 124 [2022-01-18 05:18:55,031 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:18:55,031 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-01-18 05:18:55,036 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:18:55,036 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 87 treesize of output 81 [2022-01-18 05:18:55,079 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:18:55,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991566997] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:18:55,079 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:18:55,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:18:55,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994735736] [2022-01-18 05:18:55,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:18:55,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:18:55,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:18:55,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:18:55,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=625, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:18:55,080 INFO L87 Difference]: Start difference. First operand 412 states and 1232 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:18:56,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:18:56,096 INFO L93 Difference]: Finished difference Result 546 states and 1645 transitions. [2022-01-18 05:18:56,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-18 05:18:56,096 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:18:56,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:18:56,097 INFO L225 Difference]: With dead ends: 546 [2022-01-18 05:18:56,097 INFO L226 Difference]: Without dead ends: 539 [2022-01-18 05:18:56,097 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=172, Invalid=1310, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 05:18:56,097 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 94 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 468 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:18:56,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 368 Invalid, 812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 342 Invalid, 0 Unknown, 468 Unchecked, 0.1s Time] [2022-01-18 05:18:56,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2022-01-18 05:18:56,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 412. [2022-01-18 05:18:56,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 411 states have (on average 2.997566909975669) internal successors, (1232), 411 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:18:56,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 1232 transitions. [2022-01-18 05:18:56,102 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 1232 transitions. Word has length 20 [2022-01-18 05:18:56,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:18:56,102 INFO L470 AbstractCegarLoop]: Abstraction has 412 states and 1232 transitions. [2022-01-18 05:18:56,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:18:56,102 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 1232 transitions. [2022-01-18 05:18:56,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:18:56,103 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:18:56,103 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:18:56,118 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (257)] Ended with exit code 0 [2022-01-18 05:18:56,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable446,257 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:18:56,305 INFO L402 AbstractCegarLoop]: === Iteration 448 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:18:56,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:18:56,305 INFO L85 PathProgramCache]: Analyzing trace with hash -801412467, now seen corresponding path program 57 times [2022-01-18 05:18:56,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:18:56,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016308659] [2022-01-18 05:18:56,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:18:56,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:18:56,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:18:56,699 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:18:56,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:18:56,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016308659] [2022-01-18 05:18:56,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016308659] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:18:56,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700829597] [2022-01-18 05:18:56,699 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:18:56,700 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:18:56,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:18:56,700 INFO L229 MonitoredProcess]: Starting monitored process 258 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:18:56,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (258)] Waiting until timeout for monitored process [2022-01-18 05:18:56,725 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 05:18:56,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:18:56,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-18 05:18:56,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:18:57,247 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:18:57,247 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 120 treesize of output 102 [2022-01-18 05:18:58,054 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:18:58,054 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 211 treesize of output 183 [2022-01-18 05:18:58,057 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 183 treesize of output 155 [2022-01-18 05:18:59,091 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:18:59,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:18:59,893 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:18:59,893 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 157 treesize of output 145 [2022-01-18 05:19:00,352 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:19:00,352 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 101 treesize of output 95 [2022-01-18 05:19:00,357 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:19:00,357 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-01-18 05:19:00,409 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:19:00,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700829597] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:19:00,409 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:19:00,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:19:00,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097511868] [2022-01-18 05:19:00,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:19:00,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:19:00,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:19:00,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:19:00,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=625, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:19:00,410 INFO L87 Difference]: Start difference. First operand 412 states and 1232 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:19:01,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:19:01,222 INFO L93 Difference]: Finished difference Result 531 states and 1592 transitions. [2022-01-18 05:19:01,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 05:19:01,223 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:19:01,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:19:01,224 INFO L225 Difference]: With dead ends: 531 [2022-01-18 05:19:01,224 INFO L226 Difference]: Without dead ends: 516 [2022-01-18 05:19:01,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 23 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=140, Invalid=1120, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 05:19:01,224 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 40 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 115 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:19:01,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 326 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 214 Invalid, 0 Unknown, 115 Unchecked, 0.1s Time] [2022-01-18 05:19:01,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2022-01-18 05:19:01,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 418. [2022-01-18 05:19:01,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 417 states have (on average 2.9928057553956835) internal successors, (1248), 417 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:19:01,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 1248 transitions. [2022-01-18 05:19:01,228 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 1248 transitions. Word has length 20 [2022-01-18 05:19:01,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:19:01,229 INFO L470 AbstractCegarLoop]: Abstraction has 418 states and 1248 transitions. [2022-01-18 05:19:01,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:19:01,229 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 1248 transitions. [2022-01-18 05:19:01,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:19:01,229 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:19:01,229 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:19:01,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (258)] Forceful destruction successful, exit code 0 [2022-01-18 05:19:01,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable447,258 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:19:01,444 INFO L402 AbstractCegarLoop]: === Iteration 449 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:19:01,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:19:01,444 INFO L85 PathProgramCache]: Analyzing trace with hash 30702993, now seen corresponding path program 58 times [2022-01-18 05:19:01,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:19:01,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554812757] [2022-01-18 05:19:01,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:19:01,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:19:01,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:19:01,862 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:19:01,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:19:01,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554812757] [2022-01-18 05:19:01,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554812757] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:19:01,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059378926] [2022-01-18 05:19:01,862 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 05:19:01,862 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:19:01,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:19:01,863 INFO L229 MonitoredProcess]: Starting monitored process 259 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:19:01,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (259)] Waiting until timeout for monitored process [2022-01-18 05:19:01,886 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 05:19:01,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:19:01,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 05:19:01,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:19:02,341 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:19:02,341 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2022-01-18 05:19:03,028 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:19:03,029 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 139 [2022-01-18 05:19:03,031 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 115 [2022-01-18 05:19:03,394 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:19:03,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:19:04,031 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:19:04,032 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 136 treesize of output 124 [2022-01-18 05:19:04,465 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:19:04,465 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 101 [2022-01-18 05:19:04,470 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:19:04,470 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 93 treesize of output 85 [2022-01-18 05:19:04,531 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:19:04,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059378926] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:19:04,532 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:19:04,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:19:04,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468984834] [2022-01-18 05:19:04,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:19:04,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:19:04,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:19:04,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:19:04,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=625, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:19:04,532 INFO L87 Difference]: Start difference. First operand 418 states and 1248 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:19:05,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:19:05,118 INFO L93 Difference]: Finished difference Result 526 states and 1580 transitions. [2022-01-18 05:19:05,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 05:19:05,119 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:19:05,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:19:05,119 INFO L225 Difference]: With dead ends: 526 [2022-01-18 05:19:05,119 INFO L226 Difference]: Without dead ends: 519 [2022-01-18 05:19:05,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=133, Invalid=1057, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 05:19:05,120 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 45 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 88 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:19:05,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 271 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 267 Invalid, 0 Unknown, 88 Unchecked, 0.1s Time] [2022-01-18 05:19:05,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2022-01-18 05:19:05,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 418. [2022-01-18 05:19:05,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 417 states have (on average 2.9928057553956835) internal successors, (1248), 417 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:19:05,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 1248 transitions. [2022-01-18 05:19:05,124 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 1248 transitions. Word has length 20 [2022-01-18 05:19:05,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:19:05,124 INFO L470 AbstractCegarLoop]: Abstraction has 418 states and 1248 transitions. [2022-01-18 05:19:05,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:19:05,124 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 1248 transitions. [2022-01-18 05:19:05,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:19:05,125 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:19:05,125 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] [2022-01-18 05:19:05,140 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (259)] Forceful destruction successful, exit code 0 [2022-01-18 05:19:05,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 259 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable448 [2022-01-18 05:19:05,325 INFO L402 AbstractCegarLoop]: === Iteration 450 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:19:05,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:19:05,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1693355681, now seen corresponding path program 59 times [2022-01-18 05:19:05,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:19:05,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231110130] [2022-01-18 05:19:05,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:19:05,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:19:05,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:19:05,732 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:19:05,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:19:05,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231110130] [2022-01-18 05:19:05,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231110130] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:19:05,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39898452] [2022-01-18 05:19:05,733 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 05:19:05,733 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:19:05,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:19:05,734 INFO L229 MonitoredProcess]: Starting monitored process 260 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:19:05,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (260)] Waiting until timeout for monitored process [2022-01-18 05:19:05,757 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:19:05,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:19:05,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 05:19:05,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:19:06,013 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-01-18 05:19:06,387 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-01-18 05:19:06,389 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 138 treesize of output 114 [2022-01-18 05:19:06,703 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:19:06,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:19:07,278 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:19:07,278 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 122 treesize of output 110 [2022-01-18 05:19:07,574 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 05:19:07,574 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 89 treesize of output 78 [2022-01-18 05:19:07,576 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 61 [2022-01-18 05:19:07,580 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:19:07,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39898452] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:19:07,580 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:19:07,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-01-18 05:19:07,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125747689] [2022-01-18 05:19:07,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:19:07,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-18 05:19:07,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:19:07,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-18 05:19:07,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=676, Unknown=0, NotChecked=0, Total=756 [2022-01-18 05:19:07,581 INFO L87 Difference]: Start difference. First operand 418 states and 1248 transitions. Second operand has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 28 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:19:09,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:19:09,820 INFO L93 Difference]: Finished difference Result 676 states and 1946 transitions. [2022-01-18 05:19:09,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-18 05:19:09,820 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 28 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:19:09,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:19:09,821 INFO L225 Difference]: With dead ends: 676 [2022-01-18 05:19:09,821 INFO L226 Difference]: Without dead ends: 646 [2022-01-18 05:19:09,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=260, Invalid=1632, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 05:19:09,821 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 198 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 1041 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 1066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 05:19:09,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [198 Valid, 370 Invalid, 1066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1041 Invalid, 0 Unknown, 4 Unchecked, 0.5s Time] [2022-01-18 05:19:09,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2022-01-18 05:19:09,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 401. [2022-01-18 05:19:09,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 400 states have (on average 3.0125) internal successors, (1205), 400 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:19:09,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 1205 transitions. [2022-01-18 05:19:09,826 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 1205 transitions. Word has length 20 [2022-01-18 05:19:09,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:19:09,826 INFO L470 AbstractCegarLoop]: Abstraction has 401 states and 1205 transitions. [2022-01-18 05:19:09,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 28 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:19:09,826 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 1205 transitions. [2022-01-18 05:19:09,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:19:09,827 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:19:09,827 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:19:09,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (260)] Forceful destruction successful, exit code 0 [2022-01-18 05:19:10,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable449,260 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:19:10,027 INFO L402 AbstractCegarLoop]: === Iteration 451 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:19:10,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:19:10,027 INFO L85 PathProgramCache]: Analyzing trace with hash -268208309, now seen corresponding path program 60 times [2022-01-18 05:19:10,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:19:10,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971241187] [2022-01-18 05:19:10,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:19:10,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:19:10,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:19:10,387 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:19:10,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:19:10,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971241187] [2022-01-18 05:19:10,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971241187] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:19:10,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148068013] [2022-01-18 05:19:10,388 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 05:19:10,388 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:19:10,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:19:10,389 INFO L229 MonitoredProcess]: Starting monitored process 261 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:19:10,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (261)] Waiting until timeout for monitored process [2022-01-18 05:19:10,412 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 05:19:10,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:19:10,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-18 05:19:10,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:19:10,865 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:19:10,866 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2022-01-18 05:19:12,234 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:19:12,234 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 184 treesize of output 160 [2022-01-18 05:19:12,237 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 160 treesize of output 136 [2022-01-18 05:19:12,825 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:19:12,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:19:13,681 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:19:13,681 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 185 treesize of output 167 [2022-01-18 05:19:14,191 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:19:14,191 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 101 treesize of output 95 [2022-01-18 05:19:14,196 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:19:14,196 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 87 treesize of output 81 [2022-01-18 05:19:14,250 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:19:14,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148068013] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:19:14,250 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:19:14,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:19:14,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471871257] [2022-01-18 05:19:14,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:19:14,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:19:14,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:19:14,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:19:14,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:19:14,250 INFO L87 Difference]: Start difference. First operand 401 states and 1205 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:19:14,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:19:14,979 INFO L93 Difference]: Finished difference Result 585 states and 1719 transitions. [2022-01-18 05:19:14,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 05:19:14,980 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:19:14,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:19:14,981 INFO L225 Difference]: With dead ends: 585 [2022-01-18 05:19:14,981 INFO L226 Difference]: Without dead ends: 578 [2022-01-18 05:19:14,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=132, Invalid=1128, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 05:19:14,981 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 58 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 150 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:19:14,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 422 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 364 Invalid, 0 Unknown, 150 Unchecked, 0.2s Time] [2022-01-18 05:19:14,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2022-01-18 05:19:14,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 409. [2022-01-18 05:19:14,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 408 states have (on average 3.0122549019607843) internal successors, (1229), 408 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:19:14,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 1229 transitions. [2022-01-18 05:19:14,986 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 1229 transitions. Word has length 20 [2022-01-18 05:19:14,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:19:14,986 INFO L470 AbstractCegarLoop]: Abstraction has 409 states and 1229 transitions. [2022-01-18 05:19:14,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:19:14,986 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 1229 transitions. [2022-01-18 05:19:14,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:19:14,986 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:19:14,986 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:19:15,001 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (261)] Ended with exit code 0 [2022-01-18 05:19:15,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable450,261 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:19:15,187 INFO L402 AbstractCegarLoop]: === Iteration 452 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:19:15,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:19:15,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1446156109, now seen corresponding path program 61 times [2022-01-18 05:19:15,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:19:15,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699272601] [2022-01-18 05:19:15,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:19:15,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:19:15,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:19:15,537 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:19:15,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:19:15,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699272601] [2022-01-18 05:19:15,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699272601] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:19:15,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953309275] [2022-01-18 05:19:15,537 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 05:19:15,537 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:19:15,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:19:15,538 INFO L229 MonitoredProcess]: Starting monitored process 262 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:19:15,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (262)] Waiting until timeout for monitored process [2022-01-18 05:19:15,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:19:15,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-18 05:19:15,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:19:16,014 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:19:16,015 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2022-01-18 05:19:17,298 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:19:17,298 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 171 treesize of output 147 [2022-01-18 05:19:17,304 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 147 treesize of output 123 [2022-01-18 05:19:17,912 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:19:17,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:19:18,859 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:19:18,859 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 165 treesize of output 151 [2022-01-18 05:19:19,297 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:19:19,297 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 109 treesize of output 101 [2022-01-18 05:19:19,304 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:19:19,304 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 85 [2022-01-18 05:19:19,360 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:19:19,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953309275] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:19:19,360 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:19:19,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:19:19,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148300967] [2022-01-18 05:19:19,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:19:19,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:19:19,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:19:19,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:19:19,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:19:19,361 INFO L87 Difference]: Start difference. First operand 409 states and 1229 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:19:20,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:19:20,106 INFO L93 Difference]: Finished difference Result 598 states and 1806 transitions. [2022-01-18 05:19:20,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 05:19:20,106 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:19:20,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:19:20,107 INFO L225 Difference]: With dead ends: 598 [2022-01-18 05:19:20,107 INFO L226 Difference]: Without dead ends: 591 [2022-01-18 05:19:20,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=132, Invalid=1128, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 05:19:20,107 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 91 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 472 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:19:20,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 440 Invalid, 872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 398 Invalid, 0 Unknown, 472 Unchecked, 0.2s Time] [2022-01-18 05:19:20,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2022-01-18 05:19:20,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 419. [2022-01-18 05:19:20,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 418 states have (on average 3.007177033492823) internal successors, (1257), 418 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:19:20,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 1257 transitions. [2022-01-18 05:19:20,112 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 1257 transitions. Word has length 20 [2022-01-18 05:19:20,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:19:20,112 INFO L470 AbstractCegarLoop]: Abstraction has 419 states and 1257 transitions. [2022-01-18 05:19:20,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:19:20,112 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 1257 transitions. [2022-01-18 05:19:20,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:19:20,113 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:19:20,113 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:19:20,128 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (262)] Forceful destruction successful, exit code 0 [2022-01-18 05:19:20,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable451,262 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:19:20,313 INFO L402 AbstractCegarLoop]: === Iteration 453 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:19:20,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:19:20,314 INFO L85 PathProgramCache]: Analyzing trace with hash -227589147, now seen corresponding path program 62 times [2022-01-18 05:19:20,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:19:20,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341875149] [2022-01-18 05:19:20,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:19:20,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:19:20,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:19:20,685 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:19:20,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:19:20,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341875149] [2022-01-18 05:19:20,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341875149] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:19:20,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127298521] [2022-01-18 05:19:20,686 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 05:19:20,686 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:19:20,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:19:20,687 INFO L229 MonitoredProcess]: Starting monitored process 263 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:19:20,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (263)] Waiting until timeout for monitored process [2022-01-18 05:19:20,709 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:19:20,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:19:20,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 05:19:20,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:19:21,132 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:19:21,133 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 101 [2022-01-18 05:19:21,893 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:19:21,893 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 168 treesize of output 144 [2022-01-18 05:19:21,895 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 144 treesize of output 120 [2022-01-18 05:19:22,207 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:19:22,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:19:22,910 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:19:22,910 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 144 treesize of output 132 [2022-01-18 05:19:23,281 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:19:23,281 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2022-01-18 05:19:23,286 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:19:23,286 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 85 [2022-01-18 05:19:23,340 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:19:23,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127298521] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:19:23,340 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:19:23,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:19:23,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157204261] [2022-01-18 05:19:23,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:19:23,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:19:23,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:19:23,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:19:23,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:19:23,341 INFO L87 Difference]: Start difference. First operand 419 states and 1257 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:19:23,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:19:23,998 INFO L93 Difference]: Finished difference Result 581 states and 1734 transitions. [2022-01-18 05:19:23,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 05:19:23,998 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:19:23,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:19:23,999 INFO L225 Difference]: With dead ends: 581 [2022-01-18 05:19:23,999 INFO L226 Difference]: Without dead ends: 574 [2022-01-18 05:19:23,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=126, Invalid=1064, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 05:19:23,999 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 93 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 244 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:19:23,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 343 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 335 Invalid, 0 Unknown, 244 Unchecked, 0.2s Time] [2022-01-18 05:19:24,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2022-01-18 05:19:24,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 427. [2022-01-18 05:19:24,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 426 states have (on average 3.007042253521127) internal successors, (1281), 426 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:19:24,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 1281 transitions. [2022-01-18 05:19:24,004 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 1281 transitions. Word has length 20 [2022-01-18 05:19:24,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:19:24,004 INFO L470 AbstractCegarLoop]: Abstraction has 427 states and 1281 transitions. [2022-01-18 05:19:24,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:19:24,004 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 1281 transitions. [2022-01-18 05:19:24,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:19:24,005 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:19:24,005 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:19:24,020 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (263)] Ended with exit code 0 [2022-01-18 05:19:24,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 263 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable452 [2022-01-18 05:19:24,205 INFO L402 AbstractCegarLoop]: === Iteration 454 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:19:24,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:19:24,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1491943851, now seen corresponding path program 63 times [2022-01-18 05:19:24,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:19:24,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103893769] [2022-01-18 05:19:24,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:19:24,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:19:24,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:19:24,552 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:19:24,552 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:19:24,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103893769] [2022-01-18 05:19:24,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103893769] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:19:24,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598399689] [2022-01-18 05:19:24,553 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:19:24,553 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:19:24,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:19:24,553 INFO L229 MonitoredProcess]: Starting monitored process 264 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:19:24,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (264)] Waiting until timeout for monitored process [2022-01-18 05:19:24,577 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 05:19:24,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:19:24,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-18 05:19:24,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:19:25,154 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:19:25,155 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 106 [2022-01-18 05:19:26,446 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:19:26,448 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 180 treesize of output 156 [2022-01-18 05:19:26,450 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 156 treesize of output 132 [2022-01-18 05:19:27,063 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:19:27,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:19:27,815 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:19:27,815 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 258 treesize of output 238 [2022-01-18 05:19:28,449 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:19:28,449 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-01-18 05:19:28,454 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:19:28,454 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-01-18 05:19:28,508 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:19:28,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598399689] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:19:28,509 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:19:28,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:19:28,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047663192] [2022-01-18 05:19:28,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:19:28,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:19:28,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:19:28,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:19:28,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:19:28,509 INFO L87 Difference]: Start difference. First operand 427 states and 1281 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:19:28,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:19:28,813 INFO L93 Difference]: Finished difference Result 570 states and 1719 transitions. [2022-01-18 05:19:28,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 05:19:28,813 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:19:28,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:19:28,814 INFO L225 Difference]: With dead ends: 570 [2022-01-18 05:19:28,814 INFO L226 Difference]: Without dead ends: 555 [2022-01-18 05:19:28,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=96, Invalid=716, Unknown=0, NotChecked=0, Total=812 [2022-01-18 05:19:28,814 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 79 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 231 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:19:28,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 307 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 310 Invalid, 0 Unknown, 231 Unchecked, 0.1s Time] [2022-01-18 05:19:28,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2022-01-18 05:19:28,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 427. [2022-01-18 05:19:28,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 426 states have (on average 3.007042253521127) internal successors, (1281), 426 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:19:28,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 1281 transitions. [2022-01-18 05:19:28,819 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 1281 transitions. Word has length 20 [2022-01-18 05:19:28,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:19:28,819 INFO L470 AbstractCegarLoop]: Abstraction has 427 states and 1281 transitions. [2022-01-18 05:19:28,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:19:28,819 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 1281 transitions. [2022-01-18 05:19:28,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:19:28,820 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:19:28,820 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:19:28,834 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (264)] Ended with exit code 0 [2022-01-18 05:19:29,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 264 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable453 [2022-01-18 05:19:29,020 INFO L402 AbstractCegarLoop]: === Iteration 455 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:19:29,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:19:29,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1267771961, now seen corresponding path program 64 times [2022-01-18 05:19:29,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:19:29,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491904673] [2022-01-18 05:19:29,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:19:29,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:19:29,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:19:29,364 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:19:29,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:19:29,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491904673] [2022-01-18 05:19:29,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491904673] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:19:29,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056243147] [2022-01-18 05:19:29,365 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 05:19:29,365 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:19:29,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:19:29,366 INFO L229 MonitoredProcess]: Starting monitored process 265 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:19:29,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (265)] Waiting until timeout for monitored process [2022-01-18 05:19:29,389 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 05:19:29,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:19:29,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-18 05:19:29,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:19:29,860 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:19:29,860 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 101 [2022-01-18 05:19:31,124 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:19:31,124 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 139 [2022-01-18 05:19:31,127 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 139 treesize of output 117 [2022-01-18 05:19:31,684 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:19:31,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:19:32,577 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:19:32,578 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 184 treesize of output 166 [2022-01-18 05:19:33,169 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:19:33,169 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 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 [2022-01-18 05:19:33,174 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:19:33,174 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 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 [2022-01-18 05:19:33,230 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:19:33,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056243147] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:19:33,230 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:19:33,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:19:33,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278652102] [2022-01-18 05:19:33,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:19:33,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:19:33,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:19:33,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:19:33,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:19:33,230 INFO L87 Difference]: Start difference. First operand 427 states and 1281 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:19:33,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:19:33,890 INFO L93 Difference]: Finished difference Result 579 states and 1724 transitions. [2022-01-18 05:19:33,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 05:19:33,890 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:19:33,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:19:33,891 INFO L225 Difference]: With dead ends: 579 [2022-01-18 05:19:33,891 INFO L226 Difference]: Without dead ends: 572 [2022-01-18 05:19:33,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=132, Invalid=1128, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 05:19:33,891 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 84 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 204 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:19:33,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 299 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 217 Invalid, 0 Unknown, 204 Unchecked, 0.1s Time] [2022-01-18 05:19:33,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2022-01-18 05:19:33,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 428. [2022-01-18 05:19:33,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 427 states have (on average 3.0070257611241216) internal successors, (1284), 427 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:19:33,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 1284 transitions. [2022-01-18 05:19:33,896 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 1284 transitions. Word has length 20 [2022-01-18 05:19:33,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:19:33,896 INFO L470 AbstractCegarLoop]: Abstraction has 428 states and 1284 transitions. [2022-01-18 05:19:33,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:19:33,896 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 1284 transitions. [2022-01-18 05:19:33,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:19:33,897 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:19:33,897 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:19:33,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (265)] Forceful destruction successful, exit code 0 [2022-01-18 05:19:34,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 265 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable454 [2022-01-18 05:19:34,097 INFO L402 AbstractCegarLoop]: === Iteration 456 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:19:34,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:19:34,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1443645429, now seen corresponding path program 65 times [2022-01-18 05:19:34,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:19:34,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305927085] [2022-01-18 05:19:34,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:19:34,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:19:34,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:19:34,447 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:19:34,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:19:34,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305927085] [2022-01-18 05:19:34,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305927085] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:19:34,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050450550] [2022-01-18 05:19:34,447 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 05:19:34,447 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:19:34,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:19:34,448 INFO L229 MonitoredProcess]: Starting monitored process 266 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:19:34,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (266)] Waiting until timeout for monitored process [2022-01-18 05:19:34,472 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:19:34,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:19:34,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-18 05:19:34,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:19:34,726 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-01-18 05:19:35,643 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 199 treesize of output 173 [2022-01-18 05:19:35,645 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 173 treesize of output 147 [2022-01-18 05:19:36,231 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:19:36,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:19:37,145 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:19:37,145 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 246 treesize of output 226 [2022-01-18 05:19:37,669 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 05:19:37,670 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 78 [2022-01-18 05:19:37,671 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 61 [2022-01-18 05:19:37,675 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:19:37,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050450550] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:19:37,676 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:19:37,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-01-18 05:19:37,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593006923] [2022-01-18 05:19:37,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:19:37,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-18 05:19:37,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:19:37,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-18 05:19:37,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2022-01-18 05:19:37,676 INFO L87 Difference]: Start difference. First operand 428 states and 1284 transitions. Second operand has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 28 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:19:40,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:19:40,563 INFO L93 Difference]: Finished difference Result 805 states and 2274 transitions. [2022-01-18 05:19:40,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-18 05:19:40,564 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 28 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:19:40,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:19:40,565 INFO L225 Difference]: With dead ends: 805 [2022-01-18 05:19:40,565 INFO L226 Difference]: Without dead ends: 775 [2022-01-18 05:19:40,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=305, Invalid=1501, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 05:19:40,565 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 268 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 05:19:40,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 313 Invalid, 928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 05:19:40,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2022-01-18 05:19:40,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 428. [2022-01-18 05:19:40,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 427 states have (on average 3.0070257611241216) internal successors, (1284), 427 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:19:40,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 1284 transitions. [2022-01-18 05:19:40,571 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 1284 transitions. Word has length 20 [2022-01-18 05:19:40,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:19:40,571 INFO L470 AbstractCegarLoop]: Abstraction has 428 states and 1284 transitions. [2022-01-18 05:19:40,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 28 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:19:40,571 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 1284 transitions. [2022-01-18 05:19:40,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:19:40,572 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:19:40,572 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:19:40,588 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (266)] Ended with exit code 0 [2022-01-18 05:19:40,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 266 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable455 [2022-01-18 05:19:40,772 INFO L402 AbstractCegarLoop]: === Iteration 457 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:19:40,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:19:40,772 INFO L85 PathProgramCache]: Analyzing trace with hash 879453259, now seen corresponding path program 66 times [2022-01-18 05:19:40,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:19:40,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196982704] [2022-01-18 05:19:40,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:19:40,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:19:40,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:19:41,144 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:19:41,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:19:41,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196982704] [2022-01-18 05:19:41,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196982704] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:19:41,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870017078] [2022-01-18 05:19:41,144 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 05:19:41,145 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:19:41,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:19:41,145 INFO L229 MonitoredProcess]: Starting monitored process 267 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:19:41,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (267)] Waiting until timeout for monitored process [2022-01-18 05:19:41,169 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 05:19:41,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:19:41,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 05:19:41,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:19:41,568 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:19:41,569 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 102 [2022-01-18 05:19:42,466 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:19:42,467 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 219 treesize of output 189 [2022-01-18 05:19:42,469 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 189 treesize of output 159 [2022-01-18 05:19:43,096 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:19:43,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:19:43,734 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:19:43,735 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 135 treesize of output 123 [2022-01-18 05:19:44,059 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:19:44,059 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 101 treesize of output 95 [2022-01-18 05:19:44,064 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:19:44,064 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-01-18 05:19:44,120 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:19:44,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870017078] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:19:44,120 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:19:44,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:19:44,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438256899] [2022-01-18 05:19:44,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:19:44,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:19:44,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:19:44,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:19:44,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:19:44,120 INFO L87 Difference]: Start difference. First operand 428 states and 1284 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:19:44,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:19:44,950 INFO L93 Difference]: Finished difference Result 568 states and 1719 transitions. [2022-01-18 05:19:44,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 05:19:44,950 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:19:44,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:19:44,951 INFO L225 Difference]: With dead ends: 568 [2022-01-18 05:19:44,951 INFO L226 Difference]: Without dead ends: 561 [2022-01-18 05:19:44,951 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=134, Invalid=1056, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 05:19:44,951 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 57 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 86 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:19:44,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 297 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 273 Invalid, 0 Unknown, 86 Unchecked, 0.1s Time] [2022-01-18 05:19:44,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2022-01-18 05:19:44,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 428. [2022-01-18 05:19:44,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 427 states have (on average 3.0070257611241216) internal successors, (1284), 427 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:19:44,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 1284 transitions. [2022-01-18 05:19:44,956 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 1284 transitions. Word has length 20 [2022-01-18 05:19:44,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:19:44,956 INFO L470 AbstractCegarLoop]: Abstraction has 428 states and 1284 transitions. [2022-01-18 05:19:44,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:19:44,956 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 1284 transitions. [2022-01-18 05:19:44,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:19:44,957 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:19:44,957 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:19:44,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (267)] Forceful destruction successful, exit code 0 [2022-01-18 05:19:45,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable456,267 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:19:45,157 INFO L402 AbstractCegarLoop]: === Iteration 458 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:19:45,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:19:45,158 INFO L85 PathProgramCache]: Analyzing trace with hash -883782707, now seen corresponding path program 67 times [2022-01-18 05:19:45,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:19:45,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622830100] [2022-01-18 05:19:45,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:19:45,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:19:45,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:19:45,519 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:19:45,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:19:45,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622830100] [2022-01-18 05:19:45,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622830100] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:19:45,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381193701] [2022-01-18 05:19:45,519 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 05:19:45,519 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:19:45,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:19:45,520 INFO L229 MonitoredProcess]: Starting monitored process 268 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:19:45,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (268)] Waiting until timeout for monitored process [2022-01-18 05:19:45,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:19:45,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-18 05:19:45,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:19:45,984 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:19:45,985 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 122 treesize of output 104 [2022-01-18 05:19:46,918 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:19:46,919 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 211 treesize of output 183 [2022-01-18 05:19:46,922 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 183 treesize of output 155 [2022-01-18 05:19:47,905 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:19:47,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:19:48,991 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:19:48,991 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 163 treesize of output 151 [2022-01-18 05:19:49,434 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:19:49,434 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 101 treesize of output 95 [2022-01-18 05:19:49,440 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:19:49,440 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 87 treesize of output 81 [2022-01-18 05:19:49,482 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:19:49,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381193701] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:19:49,482 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:19:49,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:19:49,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562012401] [2022-01-18 05:19:49,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:19:49,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:19:49,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:19:49,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:19:49,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:19:49,483 INFO L87 Difference]: Start difference. First operand 428 states and 1284 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:19:50,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:19:50,494 INFO L93 Difference]: Finished difference Result 562 states and 1700 transitions. [2022-01-18 05:19:50,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 05:19:50,494 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:19:50,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:19:50,495 INFO L225 Difference]: With dead ends: 562 [2022-01-18 05:19:50,495 INFO L226 Difference]: Without dead ends: 555 [2022-01-18 05:19:50,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=134, Invalid=1056, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 05:19:50,495 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 54 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 63 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:19:50,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 318 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 442 Invalid, 0 Unknown, 63 Unchecked, 0.2s Time] [2022-01-18 05:19:50,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2022-01-18 05:19:50,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 430. [2022-01-18 05:19:50,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 429 states have (on average 3.011655011655012) internal successors, (1292), 429 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:19:50,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 1292 transitions. [2022-01-18 05:19:50,500 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 1292 transitions. Word has length 20 [2022-01-18 05:19:50,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:19:50,500 INFO L470 AbstractCegarLoop]: Abstraction has 430 states and 1292 transitions. [2022-01-18 05:19:50,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:19:50,500 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 1292 transitions. [2022-01-18 05:19:50,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:19:50,501 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:19:50,501 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:19:50,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (268)] Forceful destruction successful, exit code 0 [2022-01-18 05:19:50,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 268 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable457 [2022-01-18 05:19:50,701 INFO L402 AbstractCegarLoop]: === Iteration 459 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:19:50,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:19:50,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1259762277, now seen corresponding path program 68 times [2022-01-18 05:19:50,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:19:50,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920096748] [2022-01-18 05:19:50,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:19:50,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:19:50,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:19:51,068 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:19:51,068 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:19:51,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920096748] [2022-01-18 05:19:51,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920096748] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:19:51,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389752326] [2022-01-18 05:19:51,068 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 05:19:51,068 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:19:51,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:19:51,069 INFO L229 MonitoredProcess]: Starting monitored process 269 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:19:51,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (269)] Waiting until timeout for monitored process [2022-01-18 05:19:51,093 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:19:51,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:19:51,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 05:19:51,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:19:51,483 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:19:51,484 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 124 treesize of output 106 [2022-01-18 05:19:52,153 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:19:52,153 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 213 treesize of output 185 [2022-01-18 05:19:52,156 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 157 [2022-01-18 05:19:52,827 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:19:52,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:19:53,475 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:19:53,475 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 143 treesize of output 131 [2022-01-18 05:19:53,782 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:19:53,782 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-01-18 05:19:53,787 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:19:53,787 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 87 treesize of output 81 [2022-01-18 05:19:53,834 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:19:53,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389752326] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:19:53,834 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:19:53,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:19:53,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096100657] [2022-01-18 05:19:53,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:19:53,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:19:53,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:19:53,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:19:53,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:19:53,835 INFO L87 Difference]: Start difference. First operand 430 states and 1292 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:19:55,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:19:55,402 INFO L93 Difference]: Finished difference Result 726 states and 2195 transitions. [2022-01-18 05:19:55,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-18 05:19:55,403 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:19:55,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:19:55,404 INFO L225 Difference]: With dead ends: 726 [2022-01-18 05:19:55,404 INFO L226 Difference]: Without dead ends: 712 [2022-01-18 05:19:55,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=172, Invalid=1388, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 05:19:55,404 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 136 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 482 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:19:55,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 436 Invalid, 992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 497 Invalid, 0 Unknown, 482 Unchecked, 0.2s Time] [2022-01-18 05:19:55,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2022-01-18 05:19:55,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 434. [2022-01-18 05:19:55,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 433 states have (on average 3.02540415704388) internal successors, (1310), 433 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:19:55,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 1310 transitions. [2022-01-18 05:19:55,410 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 1310 transitions. Word has length 20 [2022-01-18 05:19:55,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:19:55,410 INFO L470 AbstractCegarLoop]: Abstraction has 434 states and 1310 transitions. [2022-01-18 05:19:55,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:19:55,410 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 1310 transitions. [2022-01-18 05:19:55,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:19:55,411 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:19:55,411 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:19:55,426 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (269)] Ended with exit code 0 [2022-01-18 05:19:55,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 269 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable458 [2022-01-18 05:19:55,611 INFO L402 AbstractCegarLoop]: === Iteration 460 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:19:55,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:19:55,612 INFO L85 PathProgramCache]: Analyzing trace with hash -663551065, now seen corresponding path program 69 times [2022-01-18 05:19:55,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:19:55,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782998178] [2022-01-18 05:19:55,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:19:55,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:19:55,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:19:55,983 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:19:55,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:19:55,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782998178] [2022-01-18 05:19:55,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782998178] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:19:55,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221826227] [2022-01-18 05:19:55,984 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:19:55,984 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:19:55,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:19:55,985 INFO L229 MonitoredProcess]: Starting monitored process 270 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:19:55,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (270)] Waiting until timeout for monitored process [2022-01-18 05:19:56,009 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 05:19:56,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:19:56,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 05:19:56,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:19:56,393 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:19:56,393 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 102 [2022-01-18 05:19:57,062 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:19:57,063 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 219 treesize of output 189 [2022-01-18 05:19:57,065 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 189 treesize of output 159 [2022-01-18 05:19:57,846 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:19:57,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:19:58,486 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:19:58,486 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 143 treesize of output 131 [2022-01-18 05:19:58,765 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:19:58,765 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-01-18 05:19:58,770 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:19:58,770 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-01-18 05:19:58,828 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:19:58,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221826227] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:19:58,829 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:19:58,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:19:58,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582298063] [2022-01-18 05:19:58,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:19:58,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:19:58,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:19:58,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:19:58,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:19:58,829 INFO L87 Difference]: Start difference. First operand 434 states and 1310 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:20:00,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:20:00,125 INFO L93 Difference]: Finished difference Result 686 states and 2098 transitions. [2022-01-18 05:20:00,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 05:20:00,125 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:20:00,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:20:00,126 INFO L225 Difference]: With dead ends: 686 [2022-01-18 05:20:00,127 INFO L226 Difference]: Without dead ends: 656 [2022-01-18 05:20:00,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=165, Invalid=1317, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 05:20:00,127 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 95 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 221 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:20:00,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 358 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 418 Invalid, 0 Unknown, 221 Unchecked, 0.2s Time] [2022-01-18 05:20:00,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2022-01-18 05:20:00,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 438. [2022-01-18 05:20:00,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 437 states have (on average 3.0389016018306636) internal successors, (1328), 437 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:20:00,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 1328 transitions. [2022-01-18 05:20:00,132 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 1328 transitions. Word has length 20 [2022-01-18 05:20:00,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:20:00,132 INFO L470 AbstractCegarLoop]: Abstraction has 438 states and 1328 transitions. [2022-01-18 05:20:00,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:20:00,132 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 1328 transitions. [2022-01-18 05:20:00,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:20:00,133 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:20:00,133 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:20:00,148 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (270)] Ended with exit code 0 [2022-01-18 05:20:00,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 270 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable459 [2022-01-18 05:20:00,333 INFO L402 AbstractCegarLoop]: === Iteration 461 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:20:00,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:20:00,333 INFO L85 PathProgramCache]: Analyzing trace with hash 168564395, now seen corresponding path program 70 times [2022-01-18 05:20:00,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:20:00,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451764542] [2022-01-18 05:20:00,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:20:00,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:20:00,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:20:00,715 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:20:00,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:20:00,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451764542] [2022-01-18 05:20:00,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451764542] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:20:00,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861733379] [2022-01-18 05:20:00,715 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 05:20:00,715 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:20:00,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:20:00,717 INFO L229 MonitoredProcess]: Starting monitored process 271 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:20:00,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (271)] Waiting until timeout for monitored process [2022-01-18 05:20:00,740 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 05:20:00,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:20:00,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 33 conjunts are in the unsatisfiable core [2022-01-18 05:20:00,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:20:01,225 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:20:01,225 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 102 [2022-01-18 05:20:02,020 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:20:02,020 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 219 treesize of output 191 [2022-01-18 05:20:02,024 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 191 treesize of output 163 [2022-01-18 05:20:04,324 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:20:04,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:20:06,042 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:20:06,043 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 190 treesize of output 176 [2022-01-18 05:20:06,726 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:20:06,727 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 106 treesize of output 100 [2022-01-18 05:20:06,734 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:20:06,734 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 92 treesize of output 86 [2022-01-18 05:20:06,824 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:20:06,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861733379] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:20:06,824 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:20:06,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:20:06,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345441790] [2022-01-18 05:20:06,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:20:06,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:20:06,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:20:06,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:20:06,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:20:06,825 INFO L87 Difference]: Start difference. First operand 438 states and 1328 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:20:07,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:20:07,845 INFO L93 Difference]: Finished difference Result 596 states and 1825 transitions. [2022-01-18 05:20:07,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 05:20:07,845 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:20:07,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:20:07,846 INFO L225 Difference]: With dead ends: 596 [2022-01-18 05:20:07,846 INFO L226 Difference]: Without dead ends: 589 [2022-01-18 05:20:07,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=137, Invalid=1123, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 05:20:07,846 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 80 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 495 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:20:07,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 341 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 294 Invalid, 0 Unknown, 495 Unchecked, 0.1s Time] [2022-01-18 05:20:07,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2022-01-18 05:20:07,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 438. [2022-01-18 05:20:07,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 437 states have (on average 3.0297482837528604) internal successors, (1324), 437 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:20:07,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 1324 transitions. [2022-01-18 05:20:07,851 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 1324 transitions. Word has length 20 [2022-01-18 05:20:07,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:20:07,851 INFO L470 AbstractCegarLoop]: Abstraction has 438 states and 1324 transitions. [2022-01-18 05:20:07,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:20:07,851 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 1324 transitions. [2022-01-18 05:20:07,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:20:07,852 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:20:07,852 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:20:07,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (271)] Forceful destruction successful, exit code 0 [2022-01-18 05:20:08,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable460,271 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:20:08,052 INFO L402 AbstractCegarLoop]: === Iteration 462 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:20:08,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:20:08,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1255598775, now seen corresponding path program 71 times [2022-01-18 05:20:08,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:20:08,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827492417] [2022-01-18 05:20:08,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:20:08,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:20:08,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:20:08,404 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:20:08,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:20:08,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827492417] [2022-01-18 05:20:08,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827492417] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:20:08,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291989073] [2022-01-18 05:20:08,404 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 05:20:08,404 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:20:08,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:20:08,405 INFO L229 MonitoredProcess]: Starting monitored process 272 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:20:08,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (272)] Waiting until timeout for monitored process [2022-01-18 05:20:08,431 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:20:08,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:20:08,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 05:20:08,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:20:08,677 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-01-18 05:20:09,129 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-01-18 05:20:09,131 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 143 treesize of output 119 [2022-01-18 05:20:09,459 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:20:09,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:20:10,106 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:20:10,106 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 123 treesize of output 111 [2022-01-18 05:20:10,393 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 05:20:10,394 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 84 [2022-01-18 05:20:10,395 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 65 [2022-01-18 05:20:10,399 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:20:10,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291989073] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:20:10,400 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:20:10,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-01-18 05:20:10,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749024807] [2022-01-18 05:20:10,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:20:10,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-18 05:20:10,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:20:10,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-18 05:20:10,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=679, Unknown=0, NotChecked=0, Total=756 [2022-01-18 05:20:10,400 INFO L87 Difference]: Start difference. First operand 438 states and 1324 transitions. Second operand has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 28 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:20:14,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:20:14,420 INFO L93 Difference]: Finished difference Result 822 states and 2312 transitions. [2022-01-18 05:20:14,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-18 05:20:14,420 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 28 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:20:14,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:20:14,421 INFO L225 Difference]: With dead ends: 822 [2022-01-18 05:20:14,421 INFO L226 Difference]: Without dead ends: 793 [2022-01-18 05:20:14,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=358, Invalid=1804, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 05:20:14,422 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 271 mSDsluCounter, 959 mSDsCounter, 0 mSdLazyCounter, 1060 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 1135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 53 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 05:20:14,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [271 Valid, 449 Invalid, 1135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1060 Invalid, 0 Unknown, 53 Unchecked, 0.5s Time] [2022-01-18 05:20:14,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2022-01-18 05:20:14,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 429. [2022-01-18 05:20:14,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 428 states have (on average 3.039719626168224) internal successors, (1301), 428 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) [2022-01-18 05:20:14,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 1301 transitions. [2022-01-18 05:20:14,427 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 1301 transitions. Word has length 20 [2022-01-18 05:20:14,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:20:14,427 INFO L470 AbstractCegarLoop]: Abstraction has 429 states and 1301 transitions. [2022-01-18 05:20:14,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 28 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:20:14,427 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 1301 transitions. [2022-01-18 05:20:14,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:20:14,428 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:20:14,428 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:20:14,443 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (272)] Ended with exit code 0 [2022-01-18 05:20:14,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable461,272 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:20:14,628 INFO L402 AbstractCegarLoop]: === Iteration 463 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:20:14,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:20:14,629 INFO L85 PathProgramCache]: Analyzing trace with hash -892143301, now seen corresponding path program 72 times [2022-01-18 05:20:14,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:20:14,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174172885] [2022-01-18 05:20:14,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:20:14,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:20:14,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:20:15,010 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:20:15,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:20:15,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174172885] [2022-01-18 05:20:15,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174172885] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:20:15,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250250312] [2022-01-18 05:20:15,010 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 05:20:15,010 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:20:15,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:20:15,011 INFO L229 MonitoredProcess]: Starting monitored process 273 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:20:15,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (273)] Waiting until timeout for monitored process [2022-01-18 05:20:15,036 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 05:20:15,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:20:15,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 05:20:15,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:20:15,484 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:20:15,485 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 102 [2022-01-18 05:20:16,187 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:20:16,187 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 210 treesize of output 180 [2022-01-18 05:20:16,189 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 180 treesize of output 150 [2022-01-18 05:20:16,902 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:20:16,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:20:17,503 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:20:17,503 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 139 treesize of output 127 [2022-01-18 05:20:17,822 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:20:17,822 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-01-18 05:20:17,827 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:20:17,827 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-01-18 05:20:17,873 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:20:17,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250250312] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:20:17,874 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:20:17,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:20:17,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902763804] [2022-01-18 05:20:17,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:20:17,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:20:17,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:20:17,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:20:17,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:20:17,874 INFO L87 Difference]: Start difference. First operand 429 states and 1301 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:20:18,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:20:18,981 INFO L93 Difference]: Finished difference Result 565 states and 1724 transitions. [2022-01-18 05:20:18,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 05:20:18,981 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:20:18,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:20:18,982 INFO L225 Difference]: With dead ends: 565 [2022-01-18 05:20:18,982 INFO L226 Difference]: Without dead ends: 558 [2022-01-18 05:20:18,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=134, Invalid=1056, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 05:20:18,982 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 52 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 204 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:20:18,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 388 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 418 Invalid, 0 Unknown, 204 Unchecked, 0.2s Time] [2022-01-18 05:20:18,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2022-01-18 05:20:18,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 430. [2022-01-18 05:20:18,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 429 states have (on average 3.0372960372960374) internal successors, (1303), 429 states have internal predecessors, (1303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:20:18,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 1303 transitions. [2022-01-18 05:20:18,987 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 1303 transitions. Word has length 20 [2022-01-18 05:20:18,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:20:18,987 INFO L470 AbstractCegarLoop]: Abstraction has 430 states and 1303 transitions. [2022-01-18 05:20:18,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:20:18,987 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 1303 transitions. [2022-01-18 05:20:18,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:20:18,988 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:20:18,988 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:20:19,004 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (273)] Ended with exit code 0 [2022-01-18 05:20:19,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 273 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable462 [2022-01-18 05:20:19,192 INFO L402 AbstractCegarLoop]: === Iteration 464 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:20:19,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:20:19,193 INFO L85 PathProgramCache]: Analyzing trace with hash -602111603, now seen corresponding path program 73 times [2022-01-18 05:20:19,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:20:19,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300550565] [2022-01-18 05:20:19,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:20:19,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:20:19,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:20:19,553 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:20:19,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:20:19,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300550565] [2022-01-18 05:20:19,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300550565] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:20:19,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021422414] [2022-01-18 05:20:19,553 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 05:20:19,553 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:20:19,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:20:19,554 INFO L229 MonitoredProcess]: Starting monitored process 274 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:20:19,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (274)] Waiting until timeout for monitored process [2022-01-18 05:20:19,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:20:19,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-18 05:20:19,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:20:20,177 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:20:20,178 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2022-01-18 05:20:21,595 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:20:21,596 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 249 treesize of output 217 [2022-01-18 05:20:21,598 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 217 treesize of output 185 [2022-01-18 05:20:22,268 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:20:22,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:20:23,216 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:20:23,216 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 174 treesize of output 158 [2022-01-18 05:20:23,896 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:20:23,896 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-01-18 05:20:23,901 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:20:23,902 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-01-18 05:20:23,955 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:20:23,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021422414] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:20:23,956 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:20:23,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:20:23,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702477932] [2022-01-18 05:20:23,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:20:23,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:20:23,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:20:23,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:20:23,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=626, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:20:23,956 INFO L87 Difference]: Start difference. First operand 430 states and 1303 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:20:24,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:20:24,729 INFO L93 Difference]: Finished difference Result 598 states and 1796 transitions. [2022-01-18 05:20:24,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 05:20:24,729 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:20:24,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:20:24,730 INFO L225 Difference]: With dead ends: 598 [2022-01-18 05:20:24,730 INFO L226 Difference]: Without dead ends: 591 [2022-01-18 05:20:24,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=138, Invalid=1122, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 05:20:24,730 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 71 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 286 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:20:24,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 283 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 305 Invalid, 0 Unknown, 286 Unchecked, 0.1s Time] [2022-01-18 05:20:24,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2022-01-18 05:20:24,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 433. [2022-01-18 05:20:24,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 432 states have (on average 3.0324074074074074) internal successors, (1310), 432 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:20:24,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 1310 transitions. [2022-01-18 05:20:24,735 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 1310 transitions. Word has length 20 [2022-01-18 05:20:24,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:20:24,735 INFO L470 AbstractCegarLoop]: Abstraction has 433 states and 1310 transitions. [2022-01-18 05:20:24,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:20:24,735 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 1310 transitions. [2022-01-18 05:20:24,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:20:24,736 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:20:24,736 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:20:24,751 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (274)] Ended with exit code 0 [2022-01-18 05:20:24,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 274 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable463 [2022-01-18 05:20:24,936 INFO L402 AbstractCegarLoop]: === Iteration 465 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:20:24,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:20:24,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1698390537, now seen corresponding path program 74 times [2022-01-18 05:20:24,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:20:24,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436058904] [2022-01-18 05:20:24,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:20:24,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:20:24,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:20:25,335 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:20:25,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:20:25,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436058904] [2022-01-18 05:20:25,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436058904] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:20:25,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569666341] [2022-01-18 05:20:25,336 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 05:20:25,336 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:20:25,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:20:25,337 INFO L229 MonitoredProcess]: Starting monitored process 275 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:20:25,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (275)] Waiting until timeout for monitored process [2022-01-18 05:20:25,361 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:20:25,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:20:25,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-18 05:20:25,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:20:26,085 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:20:26,085 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 149 treesize of output 129 [2022-01-18 05:20:26,874 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:20:26,874 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 308 treesize of output 268 [2022-01-18 05:20:26,877 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 268 treesize of output 228 [2022-01-18 05:20:28,145 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:20:28,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:20:29,224 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:20:29,225 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 276 treesize of output 254 [2022-01-18 05:20:30,248 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:20:30,248 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-01-18 05:20:30,253 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:20:30,253 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-01-18 05:20:30,304 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:20:30,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569666341] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:20:30,305 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:20:30,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:20:30,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583850648] [2022-01-18 05:20:30,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:20:30,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:20:30,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:20:30,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:20:30,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=611, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:20:30,305 INFO L87 Difference]: Start difference. First operand 433 states and 1310 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:20:30,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:20:30,828 INFO L93 Difference]: Finished difference Result 584 states and 1745 transitions. [2022-01-18 05:20:30,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 05:20:30,828 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:20:30,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:20:30,829 INFO L225 Difference]: With dead ends: 584 [2022-01-18 05:20:30,829 INFO L226 Difference]: Without dead ends: 577 [2022-01-18 05:20:30,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=111, Invalid=701, Unknown=0, NotChecked=0, Total=812 [2022-01-18 05:20:30,829 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 73 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:20:30,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 233 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 364 Invalid, 0 Unknown, 57 Unchecked, 0.2s Time] [2022-01-18 05:20:30,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2022-01-18 05:20:30,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 434. [2022-01-18 05:20:30,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 433 states have (on average 3.0300230946882216) internal successors, (1312), 433 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:20:30,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 1312 transitions. [2022-01-18 05:20:30,834 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 1312 transitions. Word has length 20 [2022-01-18 05:20:30,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:20:30,834 INFO L470 AbstractCegarLoop]: Abstraction has 434 states and 1312 transitions. [2022-01-18 05:20:30,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:20:30,834 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 1312 transitions. [2022-01-18 05:20:30,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:20:30,835 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:20:30,835 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:20:30,851 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (275)] Ended with exit code 0 [2022-01-18 05:20:31,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable464,275 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:20:31,035 INFO L402 AbstractCegarLoop]: === Iteration 466 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:20:31,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:20:31,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1720987085, now seen corresponding path program 75 times [2022-01-18 05:20:31,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:20:31,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363562889] [2022-01-18 05:20:31,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:20:31,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:20:31,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:20:31,325 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:20:31,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:20:31,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363562889] [2022-01-18 05:20:31,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363562889] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:20:31,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428744113] [2022-01-18 05:20:31,326 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:20:31,326 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:20:31,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:20:31,327 INFO L229 MonitoredProcess]: Starting monitored process 276 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:20:31,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (276)] Waiting until timeout for monitored process [2022-01-18 05:20:31,352 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 05:20:31,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:20:31,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 05:20:31,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:20:31,868 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:20:31,869 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 120 treesize of output 102 [2022-01-18 05:20:32,369 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:20:32,369 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 224 treesize of output 194 [2022-01-18 05:20:32,372 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 194 treesize of output 164 [2022-01-18 05:20:33,091 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:20:33,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:20:33,646 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:20:33,647 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 146 treesize of output 134 [2022-01-18 05:20:34,131 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:20:34,131 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-01-18 05:20:34,136 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:20:34,136 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-01-18 05:20:34,184 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:20:34,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428744113] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:20:34,185 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:20:34,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:20:34,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066732838] [2022-01-18 05:20:34,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:20:34,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:20:34,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:20:34,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:20:34,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=609, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:20:34,185 INFO L87 Difference]: Start difference. First operand 434 states and 1312 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:20:34,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:20:34,826 INFO L93 Difference]: Finished difference Result 631 states and 1876 transitions. [2022-01-18 05:20:34,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 05:20:34,826 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:20:34,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:20:34,827 INFO L225 Difference]: With dead ends: 631 [2022-01-18 05:20:34,827 INFO L226 Difference]: Without dead ends: 624 [2022-01-18 05:20:34,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=113, Invalid=699, Unknown=0, NotChecked=0, Total=812 [2022-01-18 05:20:34,828 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 59 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 168 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:20:34,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 329 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 491 Invalid, 0 Unknown, 168 Unchecked, 0.2s Time] [2022-01-18 05:20:34,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2022-01-18 05:20:34,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 433. [2022-01-18 05:20:34,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 432 states have (on average 3.0300925925925926) internal successors, (1309), 432 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:20:34,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 1309 transitions. [2022-01-18 05:20:34,833 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 1309 transitions. Word has length 20 [2022-01-18 05:20:34,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:20:34,833 INFO L470 AbstractCegarLoop]: Abstraction has 433 states and 1309 transitions. [2022-01-18 05:20:34,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:20:34,833 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 1309 transitions. [2022-01-18 05:20:34,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:20:34,833 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:20:34,833 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:20:34,849 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (276)] Ended with exit code 0 [2022-01-18 05:20:35,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 276 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable465 [2022-01-18 05:20:35,034 INFO L402 AbstractCegarLoop]: === Iteration 467 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:20:35,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:20:35,034 INFO L85 PathProgramCache]: Analyzing trace with hash -427809451, now seen corresponding path program 76 times [2022-01-18 05:20:35,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:20:35,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074432332] [2022-01-18 05:20:35,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:20:35,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:20:35,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:20:35,418 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:20:35,418 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:20:35,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074432332] [2022-01-18 05:20:35,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074432332] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:20:35,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028052847] [2022-01-18 05:20:35,418 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 05:20:35,418 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:20:35,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:20:35,419 INFO L229 MonitoredProcess]: Starting monitored process 277 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:20:35,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (277)] Waiting until timeout for monitored process [2022-01-18 05:20:35,443 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 05:20:35,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:20:35,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 33 conjunts are in the unsatisfiable core [2022-01-18 05:20:35,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:20:36,103 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:20:36,104 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 122 treesize of output 104 [2022-01-18 05:20:36,644 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:20:36,645 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 219 treesize of output 189 [2022-01-18 05:20:36,648 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 189 treesize of output 159 [2022-01-18 05:20:38,978 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:20:38,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:20:40,463 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:20:40,463 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 227 treesize of output 207 [2022-01-18 05:20:41,266 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:20:41,267 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 106 treesize of output 100 [2022-01-18 05:20:41,273 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:20:41,273 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 92 treesize of output 86 [2022-01-18 05:20:41,380 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:20:41,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028052847] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:20:41,380 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:20:41,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:20:41,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889003036] [2022-01-18 05:20:41,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:20:41,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:20:41,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:20:41,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:20:41,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=621, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:20:41,381 INFO L87 Difference]: Start difference. First operand 433 states and 1309 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:20:42,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:20:42,369 INFO L93 Difference]: Finished difference Result 573 states and 1725 transitions. [2022-01-18 05:20:42,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 05:20:42,369 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:20:42,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:20:42,370 INFO L225 Difference]: With dead ends: 573 [2022-01-18 05:20:42,370 INFO L226 Difference]: Without dead ends: 566 [2022-01-18 05:20:42,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=152, Invalid=1108, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 05:20:42,370 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 51 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 107 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:20:42,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 286 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 176 Invalid, 0 Unknown, 107 Unchecked, 0.1s Time] [2022-01-18 05:20:42,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2022-01-18 05:20:42,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 434. [2022-01-18 05:20:42,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 433 states have (on average 3.0300230946882216) internal successors, (1312), 433 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:20:42,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 1312 transitions. [2022-01-18 05:20:42,375 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 1312 transitions. Word has length 20 [2022-01-18 05:20:42,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:20:42,376 INFO L470 AbstractCegarLoop]: Abstraction has 434 states and 1312 transitions. [2022-01-18 05:20:42,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:20:42,376 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 1312 transitions. [2022-01-18 05:20:42,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:20:42,376 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:20:42,376 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:20:42,391 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (277)] Ended with exit code 0 [2022-01-18 05:20:42,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 277 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable466 [2022-01-18 05:20:42,577 INFO L402 AbstractCegarLoop]: === Iteration 468 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:20:42,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:20:42,577 INFO L85 PathProgramCache]: Analyzing trace with hash 143645355, now seen corresponding path program 77 times [2022-01-18 05:20:42,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:20:42,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060973420] [2022-01-18 05:20:42,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:20:42,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:20:42,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:20:42,977 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:20:42,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:20:42,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060973420] [2022-01-18 05:20:42,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060973420] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:20:42,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751882132] [2022-01-18 05:20:42,977 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 05:20:42,977 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:20:42,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:20:42,978 INFO L229 MonitoredProcess]: Starting monitored process 278 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:20:42,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (278)] Waiting until timeout for monitored process [2022-01-18 05:20:43,002 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:20:43,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:20:43,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 05:20:43,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:20:43,274 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 122 treesize of output 104 [2022-01-18 05:20:43,647 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 166 treesize of output 142 [2022-01-18 05:20:43,648 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 118 [2022-01-18 05:20:43,958 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:20:43,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:20:44,505 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:20:44,506 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 123 treesize of output 111 [2022-01-18 05:20:44,815 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 05:20:44,815 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 78 [2022-01-18 05:20:44,817 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 61 [2022-01-18 05:20:44,821 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:20:44,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751882132] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:20:44,821 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:20:44,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-01-18 05:20:44,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826904840] [2022-01-18 05:20:44,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:20:44,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-18 05:20:44,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:20:44,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-18 05:20:44,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=676, Unknown=0, NotChecked=0, Total=756 [2022-01-18 05:20:44,822 INFO L87 Difference]: Start difference. First operand 434 states and 1312 transitions. Second operand has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 28 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:20:47,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:20:47,160 INFO L93 Difference]: Finished difference Result 693 states and 2008 transitions. [2022-01-18 05:20:47,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-18 05:20:47,161 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 28 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:20:47,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:20:47,162 INFO L225 Difference]: With dead ends: 693 [2022-01-18 05:20:47,162 INFO L226 Difference]: Without dead ends: 663 [2022-01-18 05:20:47,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=274, Invalid=1618, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 05:20:47,162 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 211 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 989 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 1070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 63 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 05:20:47,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 357 Invalid, 1070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 989 Invalid, 0 Unknown, 63 Unchecked, 0.5s Time] [2022-01-18 05:20:47,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2022-01-18 05:20:47,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 424. [2022-01-18 05:20:47,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 423 states have (on average 3.044917257683215) internal successors, (1288), 423 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:20:47,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 1288 transitions. [2022-01-18 05:20:47,167 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 1288 transitions. Word has length 20 [2022-01-18 05:20:47,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:20:47,168 INFO L470 AbstractCegarLoop]: Abstraction has 424 states and 1288 transitions. [2022-01-18 05:20:47,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 28 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:20:47,168 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 1288 transitions. [2022-01-18 05:20:47,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:20:47,168 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:20:47,168 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:20:47,184 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (278)] Ended with exit code 0 [2022-01-18 05:20:47,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 278 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable467 [2022-01-18 05:20:47,369 INFO L402 AbstractCegarLoop]: === Iteration 469 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:20:47,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:20:47,369 INFO L85 PathProgramCache]: Analyzing trace with hash -308290761, now seen corresponding path program 78 times [2022-01-18 05:20:47,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:20:47,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388381332] [2022-01-18 05:20:47,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:20:47,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:20:47,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:20:47,773 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:20:47,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:20:47,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388381332] [2022-01-18 05:20:47,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388381332] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:20:47,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703394176] [2022-01-18 05:20:47,773 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 05:20:47,773 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:20:47,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:20:47,774 INFO L229 MonitoredProcess]: Starting monitored process 279 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:20:47,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (279)] Waiting until timeout for monitored process [2022-01-18 05:20:47,798 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 05:20:47,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:20:47,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-18 05:20:47,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:20:48,324 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:20:48,325 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2022-01-18 05:20:49,931 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:20:49,932 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 249 treesize of output 217 [2022-01-18 05:20:49,934 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 217 treesize of output 185 [2022-01-18 05:20:50,676 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:20:50,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:20:51,565 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:20:51,566 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 184 treesize of output 166 [2022-01-18 05:20:52,101 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:20:52,101 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-01-18 05:20:52,105 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:20:52,106 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 87 treesize of output 81 [2022-01-18 05:20:52,146 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:20:52,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703394176] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:20:52,146 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:20:52,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:20:52,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401598639] [2022-01-18 05:20:52,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:20:52,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:20:52,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:20:52,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:20:52,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=626, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:20:52,147 INFO L87 Difference]: Start difference. First operand 424 states and 1288 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:20:52,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:20:52,886 INFO L93 Difference]: Finished difference Result 547 states and 1658 transitions. [2022-01-18 05:20:52,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 05:20:52,887 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:20:52,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:20:52,887 INFO L225 Difference]: With dead ends: 547 [2022-01-18 05:20:52,888 INFO L226 Difference]: Without dead ends: 540 [2022-01-18 05:20:52,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=138, Invalid=1122, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 05:20:52,888 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 46 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:20:52,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 268 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 260 Invalid, 0 Unknown, 58 Unchecked, 0.1s Time] [2022-01-18 05:20:52,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2022-01-18 05:20:52,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 432. [2022-01-18 05:20:52,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 431 states have (on average 3.0440835266821344) internal successors, (1312), 431 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:20:52,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 1312 transitions. [2022-01-18 05:20:52,893 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 1312 transitions. Word has length 20 [2022-01-18 05:20:52,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:20:52,893 INFO L470 AbstractCegarLoop]: Abstraction has 432 states and 1312 transitions. [2022-01-18 05:20:52,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:20:52,893 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 1312 transitions. [2022-01-18 05:20:52,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:20:52,893 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:20:52,893 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] [2022-01-18 05:20:52,908 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (279)] Ended with exit code 0 [2022-01-18 05:20:53,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 279 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable468 [2022-01-18 05:20:53,094 INFO L402 AbstractCegarLoop]: === Iteration 470 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:20:53,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:20:53,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1982036017, now seen corresponding path program 79 times [2022-01-18 05:20:53,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:20:53,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443067492] [2022-01-18 05:20:53,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:20:53,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:20:53,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:20:53,445 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:20:53,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:20:53,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443067492] [2022-01-18 05:20:53,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443067492] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:20:53,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418723372] [2022-01-18 05:20:53,446 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 05:20:53,446 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:20:53,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:20:53,447 INFO L229 MonitoredProcess]: Starting monitored process 280 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:20:53,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (280)] Waiting until timeout for monitored process [2022-01-18 05:20:53,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:20:53,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 05:20:53,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:20:53,983 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:20:53,983 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 106 [2022-01-18 05:20:54,701 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:20:54,701 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 174 treesize of output 150 [2022-01-18 05:20:54,703 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-01-18 05:20:55,040 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:20:55,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:20:55,745 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:20:55,745 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 139 treesize of output 127 [2022-01-18 05:20:56,151 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:20:56,152 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 101 [2022-01-18 05:20:56,157 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:20:56,157 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 85 [2022-01-18 05:20:56,209 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:20:56,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418723372] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:20:56,209 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:20:56,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:20:56,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918631910] [2022-01-18 05:20:56,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:20:56,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:20:56,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:20:56,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:20:56,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=626, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:20:56,210 INFO L87 Difference]: Start difference. First operand 432 states and 1312 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:20:56,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:20:56,855 INFO L93 Difference]: Finished difference Result 554 states and 1665 transitions. [2022-01-18 05:20:56,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 05:20:56,856 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:20:56,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:20:56,857 INFO L225 Difference]: With dead ends: 554 [2022-01-18 05:20:56,857 INFO L226 Difference]: Without dead ends: 547 [2022-01-18 05:20:56,857 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=132, Invalid=1058, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 05:20:56,857 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 53 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 122 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:20:56,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 306 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 285 Invalid, 0 Unknown, 122 Unchecked, 0.1s Time] [2022-01-18 05:20:56,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2022-01-18 05:20:56,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 428. [2022-01-18 05:20:56,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 427 states have (on average 3.0491803278688523) internal successors, (1302), 427 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:20:56,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 1302 transitions. [2022-01-18 05:20:56,862 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 1302 transitions. Word has length 20 [2022-01-18 05:20:56,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:20:56,862 INFO L470 AbstractCegarLoop]: Abstraction has 428 states and 1302 transitions. [2022-01-18 05:20:56,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:20:56,862 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 1302 transitions. [2022-01-18 05:20:56,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:20:56,863 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:20:56,863 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] [2022-01-18 05:20:56,878 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (280)] Ended with exit code 0 [2022-01-18 05:20:57,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 280 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable469 [2022-01-18 05:20:57,063 INFO L402 AbstractCegarLoop]: === Iteration 471 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:20:57,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:20:57,063 INFO L85 PathProgramCache]: Analyzing trace with hash -262503019, now seen corresponding path program 80 times [2022-01-18 05:20:57,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:20:57,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277349004] [2022-01-18 05:20:57,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:20:57,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:20:57,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:20:57,416 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:20:57,416 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:20:57,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277349004] [2022-01-18 05:20:57,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277349004] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:20:57,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477042045] [2022-01-18 05:20:57,417 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 05:20:57,417 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:20:57,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:20:57,418 INFO L229 MonitoredProcess]: Starting monitored process 281 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:20:57,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (281)] Waiting until timeout for monitored process [2022-01-18 05:20:57,441 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:20:57,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:20:57,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-18 05:20:57,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:20:57,984 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:20:57,984 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 122 treesize of output 104 [2022-01-18 05:20:59,001 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:20:59,002 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 169 treesize of output 145 [2022-01-18 05:20:59,004 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 121 [2022-01-18 05:20:59,621 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:20:59,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:21:00,557 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:21:00,557 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 178 treesize of output 162 [2022-01-18 05:21:01,159 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:21:01,159 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-01-18 05:21:01,164 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:21:01,164 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-01-18 05:21:01,221 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:21:01,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477042045] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:21:01,221 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:21:01,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:21:01,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210767229] [2022-01-18 05:21:01,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:21:01,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:21:01,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:21:01,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:21:01,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=626, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:21:01,222 INFO L87 Difference]: Start difference. First operand 428 states and 1302 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:21:01,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:21:01,944 INFO L93 Difference]: Finished difference Result 543 states and 1650 transitions. [2022-01-18 05:21:01,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 05:21:01,944 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:21:01,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:21:01,945 INFO L225 Difference]: With dead ends: 543 [2022-01-18 05:21:01,945 INFO L226 Difference]: Without dead ends: 528 [2022-01-18 05:21:01,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=138, Invalid=1122, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 05:21:01,945 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 44 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 130 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:21:01,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 309 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 238 Invalid, 0 Unknown, 130 Unchecked, 0.1s Time] [2022-01-18 05:21:01,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2022-01-18 05:21:01,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 428. [2022-01-18 05:21:01,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 427 states have (on average 3.0491803278688523) internal successors, (1302), 427 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:21:01,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 1302 transitions. [2022-01-18 05:21:01,950 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 1302 transitions. Word has length 20 [2022-01-18 05:21:01,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:21:01,950 INFO L470 AbstractCegarLoop]: Abstraction has 428 states and 1302 transitions. [2022-01-18 05:21:01,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:21:01,950 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 1302 transitions. [2022-01-18 05:21:01,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:21:01,950 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:21:01,950 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:21:01,965 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (281)] Ended with exit code 0 [2022-01-18 05:21:02,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable470,281 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:21:02,151 INFO L402 AbstractCegarLoop]: === Iteration 472 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:21:02,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:21:02,151 INFO L85 PathProgramCache]: Analyzing trace with hash 490749243, now seen corresponding path program 81 times [2022-01-18 05:21:02,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:21:02,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125954654] [2022-01-18 05:21:02,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:21:02,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:21:02,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:21:02,554 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:21:02,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:21:02,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125954654] [2022-01-18 05:21:02,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125954654] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:21:02,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046956725] [2022-01-18 05:21:02,554 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:21:02,555 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:21:02,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:21:02,555 INFO L229 MonitoredProcess]: Starting monitored process 282 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:21:02,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (282)] Waiting until timeout for monitored process [2022-01-18 05:21:02,580 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 05:21:02,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:21:02,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 05:21:02,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:21:03,090 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:21:03,090 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2022-01-18 05:21:04,066 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:21:04,067 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2022-01-18 05:21:04,069 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-01-18 05:21:04,358 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:21:04,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:21:04,992 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:21:04,992 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 138 treesize of output 126 [2022-01-18 05:21:05,435 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:21:05,435 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 109 treesize of output 101 [2022-01-18 05:21:05,440 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:21:05,440 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 93 treesize of output 85 [2022-01-18 05:21:05,500 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:21:05,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046956725] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:21:05,500 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:21:05,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:21:05,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719585835] [2022-01-18 05:21:05,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:21:05,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:21:05,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:21:05,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:21:05,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=626, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:21:05,501 INFO L87 Difference]: Start difference. First operand 428 states and 1302 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:21:06,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:21:06,148 INFO L93 Difference]: Finished difference Result 540 states and 1641 transitions. [2022-01-18 05:21:06,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 05:21:06,148 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:21:06,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:21:06,149 INFO L225 Difference]: With dead ends: 540 [2022-01-18 05:21:06,149 INFO L226 Difference]: Without dead ends: 533 [2022-01-18 05:21:06,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=132, Invalid=1058, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 05:21:06,150 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 42 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 98 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:21:06,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 299 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 281 Invalid, 0 Unknown, 98 Unchecked, 0.1s Time] [2022-01-18 05:21:06,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2022-01-18 05:21:06,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 429. [2022-01-18 05:21:06,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 428 states have (on average 3.0490654205607477) internal successors, (1305), 428 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:21:06,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 1305 transitions. [2022-01-18 05:21:06,155 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 1305 transitions. Word has length 20 [2022-01-18 05:21:06,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:21:06,155 INFO L470 AbstractCegarLoop]: Abstraction has 429 states and 1305 transitions. [2022-01-18 05:21:06,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:21:06,155 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 1305 transitions. [2022-01-18 05:21:06,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:21:06,155 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:21:06,155 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] [2022-01-18 05:21:06,170 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (282)] Ended with exit code 0 [2022-01-18 05:21:06,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable471,282 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:21:06,356 INFO L402 AbstractCegarLoop]: === Iteration 473 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:21:06,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:21:06,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1503715913, now seen corresponding path program 82 times [2022-01-18 05:21:06,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:21:06,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651494836] [2022-01-18 05:21:06,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:21:06,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:21:06,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:21:06,731 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:21:06,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:21:06,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651494836] [2022-01-18 05:21:06,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651494836] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:21:06,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707769811] [2022-01-18 05:21:06,731 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 05:21:06,731 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:21:06,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:21:06,732 INFO L229 MonitoredProcess]: Starting monitored process 283 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:21:06,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (283)] Waiting until timeout for monitored process [2022-01-18 05:21:06,755 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 05:21:06,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:21:06,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 05:21:06,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:21:07,229 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:21:07,230 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 102 [2022-01-18 05:21:07,855 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:21:07,856 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 223 treesize of output 195 [2022-01-18 05:21:07,858 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 195 treesize of output 167 [2022-01-18 05:21:08,550 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:21:08,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:21:09,213 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:21:09,213 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 140 treesize of output 128 [2022-01-18 05:21:09,610 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:21:09,611 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 109 treesize of output 101 [2022-01-18 05:21:09,616 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:21:09,616 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 93 treesize of output 85 [2022-01-18 05:21:09,672 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:21:09,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707769811] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:21:09,672 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:21:09,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:21:09,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111704355] [2022-01-18 05:21:09,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:21:09,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:21:09,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:21:09,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:21:09,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:21:09,673 INFO L87 Difference]: Start difference. First operand 429 states and 1305 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:21:10,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:21:10,727 INFO L93 Difference]: Finished difference Result 569 states and 1710 transitions. [2022-01-18 05:21:10,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 05:21:10,727 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:21:10,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:21:10,728 INFO L225 Difference]: With dead ends: 569 [2022-01-18 05:21:10,728 INFO L226 Difference]: Without dead ends: 562 [2022-01-18 05:21:10,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=148, Invalid=1042, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 05:21:10,728 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 66 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 105 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:21:10,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 300 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 310 Invalid, 0 Unknown, 105 Unchecked, 0.1s Time] [2022-01-18 05:21:10,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2022-01-18 05:21:10,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 428. [2022-01-18 05:21:10,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 427 states have (on average 3.0491803278688523) internal successors, (1302), 427 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:21:10,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 1302 transitions. [2022-01-18 05:21:10,733 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 1302 transitions. Word has length 20 [2022-01-18 05:21:10,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:21:10,733 INFO L470 AbstractCegarLoop]: Abstraction has 428 states and 1302 transitions. [2022-01-18 05:21:10,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:21:10,733 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 1302 transitions. [2022-01-18 05:21:10,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:21:10,734 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:21:10,734 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:21:10,749 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (283)] Ended with exit code 0 [2022-01-18 05:21:10,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 283 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable472 [2022-01-18 05:21:10,938 INFO L402 AbstractCegarLoop]: === Iteration 474 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:21:10,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:21:10,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1481119365, now seen corresponding path program 83 times [2022-01-18 05:21:10,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:21:10,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503673544] [2022-01-18 05:21:10,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:21:10,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:21:10,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:21:11,247 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:21:11,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:21:11,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503673544] [2022-01-18 05:21:11,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503673544] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:21:11,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945970958] [2022-01-18 05:21:11,247 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 05:21:11,247 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:21:11,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:21:11,248 INFO L229 MonitoredProcess]: Starting monitored process 284 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:21:11,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (284)] Waiting until timeout for monitored process [2022-01-18 05:21:11,275 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 05:21:11,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:21:11,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 05:21:11,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:21:11,525 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-01-18 05:21:11,827 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 210 treesize of output 182 [2022-01-18 05:21:11,829 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 182 treesize of output 154 [2022-01-18 05:21:12,475 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:21:12,476 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:21:13,002 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:21:13,002 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 127 treesize of output 115 [2022-01-18 05:21:13,329 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 05:21:13,329 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 89 treesize of output 78 [2022-01-18 05:21:13,331 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 61 [2022-01-18 05:21:13,335 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:21:13,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945970958] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:21:13,335 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:21:13,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-01-18 05:21:13,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982385494] [2022-01-18 05:21:13,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:21:13,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-18 05:21:13,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:21:13,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-18 05:21:13,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2022-01-18 05:21:13,336 INFO L87 Difference]: Start difference. First operand 428 states and 1302 transitions. Second operand has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 28 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:21:15,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:21:15,404 INFO L93 Difference]: Finished difference Result 754 states and 2174 transitions. [2022-01-18 05:21:15,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-18 05:21:15,405 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 28 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:21:15,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:21:15,406 INFO L225 Difference]: With dead ends: 754 [2022-01-18 05:21:15,406 INFO L226 Difference]: Without dead ends: 724 [2022-01-18 05:21:15,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=298, Invalid=1508, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 05:21:15,406 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 279 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 853 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 65 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 05:21:15,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 323 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 853 Invalid, 0 Unknown, 65 Unchecked, 0.4s Time] [2022-01-18 05:21:15,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2022-01-18 05:21:15,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 429. [2022-01-18 05:21:15,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 428 states have (on average 3.0490654205607477) internal successors, (1305), 428 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:21:15,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 1305 transitions. [2022-01-18 05:21:15,412 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 1305 transitions. Word has length 20 [2022-01-18 05:21:15,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:21:15,412 INFO L470 AbstractCegarLoop]: Abstraction has 429 states and 1305 transitions. [2022-01-18 05:21:15,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 28 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:21:15,412 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 1305 transitions. [2022-01-18 05:21:15,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:21:15,412 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:21:15,412 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:21:15,427 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (284)] Ended with exit code 0 [2022-01-18 05:21:15,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable473,284 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:21:15,613 INFO L402 AbstractCegarLoop]: === Iteration 475 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:21:15,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:21:15,613 INFO L85 PathProgramCache]: Analyzing trace with hash 614053587, now seen corresponding path program 84 times [2022-01-18 05:21:15,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:21:15,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141596591] [2022-01-18 05:21:15,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:21:15,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:21:15,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:21:15,997 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:21:15,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:21:15,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141596591] [2022-01-18 05:21:15,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141596591] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:21:15,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516997072] [2022-01-18 05:21:15,997 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 05:21:15,998 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:21:15,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:21:15,998 INFO L229 MonitoredProcess]: Starting monitored process 285 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:21:15,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (285)] Waiting until timeout for monitored process [2022-01-18 05:21:16,023 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 05:21:16,024 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:21:16,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-18 05:21:16,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:21:16,565 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:21:16,566 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2022-01-18 05:21:17,030 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:21:17,031 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 217 treesize of output 189 [2022-01-18 05:21:17,033 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 189 treesize of output 161 [2022-01-18 05:21:18,804 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:21:18,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:21:19,697 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:21:19,697 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 157 treesize of output 145 [2022-01-18 05:21:20,313 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:21:20,313 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-01-18 05:21:20,322 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:21:20,322 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-01-18 05:21:20,375 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:21:20,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516997072] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:21:20,375 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:21:20,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:21:20,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601151447] [2022-01-18 05:21:20,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:21:20,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:21:20,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:21:20,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:21:20,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:21:20,376 INFO L87 Difference]: Start difference. First operand 429 states and 1305 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:21:22,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:21:22,059 INFO L93 Difference]: Finished difference Result 563 states and 1700 transitions. [2022-01-18 05:21:22,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 05:21:22,060 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:21:22,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:21:22,060 INFO L225 Difference]: With dead ends: 563 [2022-01-18 05:21:22,061 INFO L226 Difference]: Without dead ends: 556 [2022-01-18 05:21:22,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=165, Invalid=1167, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 05:21:22,061 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 89 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 207 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:21:22,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 288 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 356 Invalid, 0 Unknown, 207 Unchecked, 0.2s Time] [2022-01-18 05:21:22,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2022-01-18 05:21:22,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 435. [2022-01-18 05:21:22,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 434 states have (on average 3.057603686635945) internal successors, (1327), 434 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:21:22,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 1327 transitions. [2022-01-18 05:21:22,066 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 1327 transitions. Word has length 20 [2022-01-18 05:21:22,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:21:22,066 INFO L470 AbstractCegarLoop]: Abstraction has 435 states and 1327 transitions. [2022-01-18 05:21:22,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:21:22,066 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 1327 transitions. [2022-01-18 05:21:22,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:21:22,066 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:21:22,066 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] [2022-01-18 05:21:22,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (285)] Forceful destruction successful, exit code 0 [2022-01-18 05:21:22,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable474,285 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:21:22,267 INFO L402 AbstractCegarLoop]: === Iteration 476 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:21:22,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:21:22,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1961380711, now seen corresponding path program 85 times [2022-01-18 05:21:22,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:21:22,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25960833] [2022-01-18 05:21:22,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:21:22,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:21:22,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:21:22,599 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:21:22,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:21:22,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25960833] [2022-01-18 05:21:22,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25960833] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:21:22,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83261095] [2022-01-18 05:21:22,600 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 05:21:22,600 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:21:22,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:21:22,601 INFO L229 MonitoredProcess]: Starting monitored process 286 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:21:22,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (286)] Waiting until timeout for monitored process [2022-01-18 05:21:22,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:21:22,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 05:21:22,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:21:23,082 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:21:23,083 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 102 [2022-01-18 05:21:23,568 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:21:23,569 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 226 treesize of output 196 [2022-01-18 05:21:23,571 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 196 treesize of output 166 [2022-01-18 05:21:24,215 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:21:24,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:21:24,845 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:21:24,845 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 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 131 [2022-01-18 05:21:25,213 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:21:25,213 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-01-18 05:21:25,218 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:21:25,218 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-01-18 05:21:25,273 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:21:25,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83261095] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:21:25,273 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:21:25,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:21:25,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132936907] [2022-01-18 05:21:25,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:21:25,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:21:25,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:21:25,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:21:25,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=610, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:21:25,274 INFO L87 Difference]: Start difference. First operand 435 states and 1327 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:21:25,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:21:25,816 INFO L93 Difference]: Finished difference Result 584 states and 1786 transitions. [2022-01-18 05:21:25,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 05:21:25,816 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:21:25,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:21:25,817 INFO L225 Difference]: With dead ends: 584 [2022-01-18 05:21:25,817 INFO L226 Difference]: Without dead ends: 569 [2022-01-18 05:21:25,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=112, Invalid=700, Unknown=0, NotChecked=0, Total=812 [2022-01-18 05:21:25,817 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 78 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 198 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:21:25,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 247 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 278 Invalid, 0 Unknown, 198 Unchecked, 0.1s Time] [2022-01-18 05:21:25,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2022-01-18 05:21:25,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 445. [2022-01-18 05:21:25,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 444 states have (on average 3.074324324324324) internal successors, (1365), 444 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:21:25,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 1365 transitions. [2022-01-18 05:21:25,822 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 1365 transitions. Word has length 20 [2022-01-18 05:21:25,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:21:25,822 INFO L470 AbstractCegarLoop]: Abstraction has 445 states and 1365 transitions. [2022-01-18 05:21:25,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:21:25,822 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 1365 transitions. [2022-01-18 05:21:25,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:21:25,823 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:21:25,823 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:21:25,837 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (286)] Ended with exit code 0 [2022-01-18 05:21:26,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 286 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable475 [2022-01-18 05:21:26,023 INFO L402 AbstractCegarLoop]: === Iteration 477 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:21:26,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:21:26,023 INFO L85 PathProgramCache]: Analyzing trace with hash 639829071, now seen corresponding path program 86 times [2022-01-18 05:21:26,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:21:26,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413247068] [2022-01-18 05:21:26,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:21:26,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:21:26,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:21:26,388 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:21:26,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:21:26,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413247068] [2022-01-18 05:21:26,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413247068] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:21:26,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095493462] [2022-01-18 05:21:26,389 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 05:21:26,389 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:21:26,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:21:26,389 INFO L229 MonitoredProcess]: Starting monitored process 287 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:21:26,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (287)] Waiting until timeout for monitored process [2022-01-18 05:21:26,412 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:21:26,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:21:26,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 05:21:26,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:21:26,881 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:21:26,882 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2022-01-18 05:21:27,384 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:21:27,385 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 202 treesize of output 174 [2022-01-18 05:21:27,387 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 174 treesize of output 146 [2022-01-18 05:21:28,043 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:21:28,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:21:28,681 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:21:28,681 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 138 treesize of output 126 [2022-01-18 05:21:29,213 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:21:29,213 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-01-18 05:21:29,218 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:21:29,218 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-01-18 05:21:29,273 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:21:29,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095493462] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:21:29,273 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:21:29,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:21:29,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879875873] [2022-01-18 05:21:29,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:21:29,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:21:29,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:21:29,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:21:29,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:21:29,274 INFO L87 Difference]: Start difference. First operand 445 states and 1365 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:21:30,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:21:30,221 INFO L93 Difference]: Finished difference Result 563 states and 1722 transitions. [2022-01-18 05:21:30,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 05:21:30,221 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:21:30,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:21:30,222 INFO L225 Difference]: With dead ends: 563 [2022-01-18 05:21:30,222 INFO L226 Difference]: Without dead ends: 556 [2022-01-18 05:21:30,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=148, Invalid=1042, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 05:21:30,223 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 51 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 70 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:21:30,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 294 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 347 Invalid, 0 Unknown, 70 Unchecked, 0.2s Time] [2022-01-18 05:21:30,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2022-01-18 05:21:30,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 443. [2022-01-18 05:21:30,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 442 states have (on average 3.070135746606335) internal successors, (1357), 442 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:21:30,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 1357 transitions. [2022-01-18 05:21:30,228 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 1357 transitions. Word has length 20 [2022-01-18 05:21:30,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:21:30,228 INFO L470 AbstractCegarLoop]: Abstraction has 443 states and 1357 transitions. [2022-01-18 05:21:30,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:21:30,228 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 1357 transitions. [2022-01-18 05:21:30,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:21:30,228 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:21:30,228 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:21:30,243 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (287)] Ended with exit code 0 [2022-01-18 05:21:30,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 287 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable476 [2022-01-18 05:21:30,429 INFO L402 AbstractCegarLoop]: === Iteration 478 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:21:30,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:21:30,429 INFO L85 PathProgramCache]: Analyzing trace with hash 572148299, now seen corresponding path program 87 times [2022-01-18 05:21:30,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:21:30,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946599341] [2022-01-18 05:21:30,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:21:30,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:21:30,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:21:30,771 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:21:30,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:21:30,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946599341] [2022-01-18 05:21:30,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946599341] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:21:30,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238129128] [2022-01-18 05:21:30,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:21:30,771 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:21:30,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:21:30,772 INFO L229 MonitoredProcess]: Starting monitored process 288 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:21:30,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (288)] Waiting until timeout for monitored process [2022-01-18 05:21:30,795 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 05:21:30,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:21:30,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-18 05:21:30,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:21:31,416 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:21:31,416 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2022-01-18 05:21:32,736 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:21:32,736 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 222 treesize of output 190 [2022-01-18 05:21:32,739 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 190 treesize of output 158 [2022-01-18 05:21:33,508 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:21:33,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:21:34,434 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:21:34,434 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 178 treesize of output 162 [2022-01-18 05:21:35,062 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:21:35,062 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-01-18 05:21:35,067 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:21:35,068 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 87 treesize of output 81 [2022-01-18 05:21:35,118 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:21:35,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238129128] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:21:35,118 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:21:35,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:21:35,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018789773] [2022-01-18 05:21:35,119 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:21:35,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:21:35,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:21:35,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:21:35,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=626, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:21:35,119 INFO L87 Difference]: Start difference. First operand 443 states and 1357 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:21:36,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:21:36,166 INFO L93 Difference]: Finished difference Result 759 states and 2281 transitions. [2022-01-18 05:21:36,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-18 05:21:36,166 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:21:36,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:21:36,168 INFO L225 Difference]: With dead ends: 759 [2022-01-18 05:21:36,168 INFO L226 Difference]: Without dead ends: 745 [2022-01-18 05:21:36,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=163, Invalid=1319, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 05:21:36,168 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 92 mSDsluCounter, 752 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 452 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:21:36,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 489 Invalid, 877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 422 Invalid, 0 Unknown, 452 Unchecked, 0.2s Time] [2022-01-18 05:21:36,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2022-01-18 05:21:36,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 443. [2022-01-18 05:21:36,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 442 states have (on average 3.070135746606335) internal successors, (1357), 442 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:21:36,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 1357 transitions. [2022-01-18 05:21:36,174 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 1357 transitions. Word has length 20 [2022-01-18 05:21:36,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:21:36,174 INFO L470 AbstractCegarLoop]: Abstraction has 443 states and 1357 transitions. [2022-01-18 05:21:36,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:21:36,174 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 1357 transitions. [2022-01-18 05:21:36,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:21:36,175 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:21:36,175 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:21:36,189 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (288)] Forceful destruction successful, exit code 0 [2022-01-18 05:21:36,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 288 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable477 [2022-01-18 05:21:36,375 INFO L402 AbstractCegarLoop]: === Iteration 479 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:21:36,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:21:36,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1422316857, now seen corresponding path program 88 times [2022-01-18 05:21:36,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:21:36,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699509980] [2022-01-18 05:21:36,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:21:36,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:21:36,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:21:36,751 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:21:36,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:21:36,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699509980] [2022-01-18 05:21:36,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699509980] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:21:36,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194772720] [2022-01-18 05:21:36,751 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 05:21:36,751 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:21:36,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:21:36,752 INFO L229 MonitoredProcess]: Starting monitored process 289 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:21:36,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (289)] Waiting until timeout for monitored process [2022-01-18 05:21:36,775 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 05:21:36,776 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:21:36,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-18 05:21:36,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:21:37,490 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:21:37,491 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 123 treesize of output 105 [2022-01-18 05:21:38,056 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:21:38,056 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 220 treesize of output 190 [2022-01-18 05:21:38,059 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 190 treesize of output 160 [2022-01-18 05:21:39,068 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:21:39,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:21:40,039 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:21:40,040 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 259 treesize of output 239 [2022-01-18 05:21:40,881 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:21:40,882 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-01-18 05:21:40,887 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:21:40,887 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 87 treesize of output 81 [2022-01-18 05:21:40,942 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:21:40,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194772720] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:21:40,942 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:21:40,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:21:40,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488240385] [2022-01-18 05:21:40,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:21:40,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:21:40,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:21:40,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:21:40,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=611, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:21:40,943 INFO L87 Difference]: Start difference. First operand 443 states and 1357 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:21:41,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:21:41,622 INFO L93 Difference]: Finished difference Result 600 states and 1829 transitions. [2022-01-18 05:21:41,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 05:21:41,622 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:21:41,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:21:41,623 INFO L225 Difference]: With dead ends: 600 [2022-01-18 05:21:41,623 INFO L226 Difference]: Without dead ends: 593 [2022-01-18 05:21:41,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=111, Invalid=701, Unknown=0, NotChecked=0, Total=812 [2022-01-18 05:21:41,623 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 51 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 166 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:21:41,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 288 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 444 Invalid, 0 Unknown, 166 Unchecked, 0.2s Time] [2022-01-18 05:21:41,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2022-01-18 05:21:41,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 444. [2022-01-18 05:21:41,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 443 states have (on average 3.0677200902934536) internal successors, (1359), 443 states have internal predecessors, (1359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:21:41,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 1359 transitions. [2022-01-18 05:21:41,628 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 1359 transitions. Word has length 20 [2022-01-18 05:21:41,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:21:41,628 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 1359 transitions. [2022-01-18 05:21:41,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:21:41,628 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 1359 transitions. [2022-01-18 05:21:41,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:21:41,629 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:21:41,629 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:21:41,643 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (289)] Ended with exit code 0 [2022-01-18 05:21:41,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable478,289 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:21:41,829 INFO L402 AbstractCegarLoop]: === Iteration 480 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:21:41,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:21:41,829 INFO L85 PathProgramCache]: Analyzing trace with hash 746450451, now seen corresponding path program 89 times [2022-01-18 05:21:41,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:21:41,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560295131] [2022-01-18 05:21:41,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:21:41,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:21:41,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:21:42,232 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:21:42,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:21:42,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560295131] [2022-01-18 05:21:42,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560295131] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:21:42,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878860101] [2022-01-18 05:21:42,233 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 05:21:42,233 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:21:42,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:21:42,234 INFO L229 MonitoredProcess]: Starting monitored process 290 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:21:42,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (290)] Waiting until timeout for monitored process [2022-01-18 05:21:42,257 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:21:42,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:21:42,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 05:21:42,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:21:42,530 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2022-01-18 05:21:42,799 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 203 treesize of output 175 [2022-01-18 05:21:42,800 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 175 treesize of output 147 [2022-01-18 05:21:43,507 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:21:43,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:21:44,021 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:21:44,022 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 113 [2022-01-18 05:21:44,423 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 05:21:44,424 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 84 [2022-01-18 05:21:44,425 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 65 [2022-01-18 05:21:44,429 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:21:44,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878860101] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:21:44,430 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:21:44,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-01-18 05:21:44,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959007781] [2022-01-18 05:21:44,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:21:44,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-18 05:21:44,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:21:44,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-18 05:21:44,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=675, Unknown=0, NotChecked=0, Total=756 [2022-01-18 05:21:44,430 INFO L87 Difference]: Start difference. First operand 444 states and 1359 transitions. Second operand has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 28 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:21:47,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:21:47,468 INFO L93 Difference]: Finished difference Result 761 states and 2171 transitions. [2022-01-18 05:21:47,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 05:21:47,468 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 28 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:21:47,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:21:47,469 INFO L225 Difference]: With dead ends: 761 [2022-01-18 05:21:47,469 INFO L226 Difference]: Without dead ends: 731 [2022-01-18 05:21:47,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=292, Invalid=1688, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 05:21:47,470 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 252 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 1100 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 05:21:47,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 398 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1100 Invalid, 0 Unknown, 4 Unchecked, 0.5s Time] [2022-01-18 05:21:47,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2022-01-18 05:21:47,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 441. [2022-01-18 05:21:47,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 440 states have (on average 3.0704545454545453) internal successors, (1351), 440 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:21:47,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 1351 transitions. [2022-01-18 05:21:47,476 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 1351 transitions. Word has length 20 [2022-01-18 05:21:47,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:21:47,476 INFO L470 AbstractCegarLoop]: Abstraction has 441 states and 1351 transitions. [2022-01-18 05:21:47,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 28 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:21:47,476 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 1351 transitions. [2022-01-18 05:21:47,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:21:47,477 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:21:47,477 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:21:47,491 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (290)] Forceful destruction successful, exit code 0 [2022-01-18 05:21:47,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 290 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable479 [2022-01-18 05:21:47,677 INFO L402 AbstractCegarLoop]: === Iteration 481 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:21:47,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:21:47,677 INFO L85 PathProgramCache]: Analyzing trace with hash 145403409, now seen corresponding path program 90 times [2022-01-18 05:21:47,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:21:47,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352240195] [2022-01-18 05:21:47,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:21:47,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:21:47,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:21:48,081 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:21:48,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:21:48,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352240195] [2022-01-18 05:21:48,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352240195] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:21:48,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917679891] [2022-01-18 05:21:48,081 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 05:21:48,081 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:21:48,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:21:48,082 INFO L229 MonitoredProcess]: Starting monitored process 291 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:21:48,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (291)] Waiting until timeout for monitored process [2022-01-18 05:21:48,105 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 05:21:48,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:21:48,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 05:21:48,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:21:48,586 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:21:48,586 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2022-01-18 05:21:49,015 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:21:49,015 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 215 treesize of output 187 [2022-01-18 05:21:49,017 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 187 treesize of output 159 [2022-01-18 05:21:49,739 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:21:49,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:21:50,307 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:21:50,307 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 148 treesize of output 136 [2022-01-18 05:21:50,711 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:21:50,711 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 101 treesize of output 95 [2022-01-18 05:21:50,716 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:21:50,716 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-01-18 05:21:50,768 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:21:50,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917679891] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:21:50,768 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:21:50,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:21:50,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497957554] [2022-01-18 05:21:50,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:21:50,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:21:50,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:21:50,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:21:50,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=621, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:21:50,769 INFO L87 Difference]: Start difference. First operand 441 states and 1351 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:21:51,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:21:51,885 INFO L93 Difference]: Finished difference Result 617 states and 1869 transitions. [2022-01-18 05:21:51,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 05:21:51,885 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:21:51,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:21:51,886 INFO L225 Difference]: With dead ends: 617 [2022-01-18 05:21:51,886 INFO L226 Difference]: Without dead ends: 579 [2022-01-18 05:21:51,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=170, Invalid=1090, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 05:21:51,886 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 83 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 221 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:21:51,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 319 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 379 Invalid, 0 Unknown, 221 Unchecked, 0.2s Time] [2022-01-18 05:21:51,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2022-01-18 05:21:51,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 451. [2022-01-18 05:21:51,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 450 states have (on average 3.077777777777778) internal successors, (1385), 450 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:21:51,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 1385 transitions. [2022-01-18 05:21:51,891 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 1385 transitions. Word has length 20 [2022-01-18 05:21:51,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:21:51,891 INFO L470 AbstractCegarLoop]: Abstraction has 451 states and 1385 transitions. [2022-01-18 05:21:51,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:21:51,891 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 1385 transitions. [2022-01-18 05:21:51,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:21:51,892 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:21:51,892 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:21:51,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (291)] Forceful destruction successful, exit code 0 [2022-01-18 05:21:52,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable480,291 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:21:52,092 INFO L402 AbstractCegarLoop]: === Iteration 482 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:21:52,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:21:52,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1445794725, now seen corresponding path program 91 times [2022-01-18 05:21:52,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:21:52,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797090976] [2022-01-18 05:21:52,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:21:52,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:21:52,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:21:52,460 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:21:52,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:21:52,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797090976] [2022-01-18 05:21:52,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797090976] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:21:52,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643417329] [2022-01-18 05:21:52,460 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 05:21:52,460 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:21:52,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:21:52,461 INFO L229 MonitoredProcess]: Starting monitored process 292 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:21:52,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (292)] Waiting until timeout for monitored process [2022-01-18 05:21:52,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:21:52,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 05:21:52,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:21:53,026 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:21:53,026 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 119 treesize of output 101 [2022-01-18 05:21:53,504 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:21:53,504 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 206 treesize of output 178 [2022-01-18 05:21:53,506 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 178 treesize of output 150 [2022-01-18 05:21:54,237 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:21:54,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:21:54,822 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:21:54,823 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 150 treesize of output 138 [2022-01-18 05:21:55,348 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:21:55,349 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2022-01-18 05:21:55,354 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:21:55,354 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 85 [2022-01-18 05:21:55,416 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:21:55,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643417329] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:21:55,416 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:21:55,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:21:55,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014915696] [2022-01-18 05:21:55,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:21:55,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:21:55,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:21:55,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:21:55,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:21:55,417 INFO L87 Difference]: Start difference. First operand 451 states and 1385 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:21:56,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:21:56,585 INFO L93 Difference]: Finished difference Result 623 states and 1882 transitions. [2022-01-18 05:21:56,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 05:21:56,586 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:21:56,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:21:56,587 INFO L225 Difference]: With dead ends: 623 [2022-01-18 05:21:56,587 INFO L226 Difference]: Without dead ends: 616 [2022-01-18 05:21:56,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 23 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=157, Invalid=1033, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 05:21:56,587 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 75 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 193 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:21:56,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 266 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 375 Invalid, 0 Unknown, 193 Unchecked, 0.2s Time] [2022-01-18 05:21:56,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2022-01-18 05:21:56,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 451. [2022-01-18 05:21:56,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 450 states have (on average 3.077777777777778) internal successors, (1385), 450 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:21:56,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 1385 transitions. [2022-01-18 05:21:56,592 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 1385 transitions. Word has length 20 [2022-01-18 05:21:56,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:21:56,592 INFO L470 AbstractCegarLoop]: Abstraction has 451 states and 1385 transitions. [2022-01-18 05:21:56,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:21:56,592 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 1385 transitions. [2022-01-18 05:21:56,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:21:56,593 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:21:56,593 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:21:56,608 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (292)] Ended with exit code 0 [2022-01-18 05:21:56,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable481,292 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:21:56,793 INFO L402 AbstractCegarLoop]: === Iteration 483 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:21:56,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:21:56,793 INFO L85 PathProgramCache]: Analyzing trace with hash 882897989, now seen corresponding path program 92 times [2022-01-18 05:21:56,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:21:56,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120009763] [2022-01-18 05:21:56,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:21:56,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:21:56,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:21:57,170 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:21:57,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:21:57,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120009763] [2022-01-18 05:21:57,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120009763] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:21:57,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281690495] [2022-01-18 05:21:57,171 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 05:21:57,171 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:21:57,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:21:57,172 INFO L229 MonitoredProcess]: Starting monitored process 293 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:21:57,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (293)] Waiting until timeout for monitored process [2022-01-18 05:21:57,196 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:21:57,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:21:57,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-18 05:21:57,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:21:57,739 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:21:57,739 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 123 treesize of output 105 [2022-01-18 05:21:58,944 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:21:58,945 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 235 treesize of output 207 [2022-01-18 05:21:58,947 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 207 treesize of output 179 [2022-01-18 05:21:59,994 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:21:59,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:22:01,140 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:22:01,140 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 226 treesize of output 214 [2022-01-18 05:22:01,866 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:22:01,866 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-01-18 05:22:01,871 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:22:01,871 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-01-18 05:22:01,923 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:22:01,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281690495] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:22:01,923 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:22:01,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:22:01,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947051140] [2022-01-18 05:22:01,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:22:01,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:22:01,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:22:01,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:22:01,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:22:01,924 INFO L87 Difference]: Start difference. First operand 451 states and 1385 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:22:02,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:22:02,486 INFO L93 Difference]: Finished difference Result 616 states and 1899 transitions. [2022-01-18 05:22:02,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 05:22:02,486 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:22:02,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:22:02,487 INFO L225 Difference]: With dead ends: 616 [2022-01-18 05:22:02,487 INFO L226 Difference]: Without dead ends: 601 [2022-01-18 05:22:02,487 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=103, Invalid=709, Unknown=0, NotChecked=0, Total=812 [2022-01-18 05:22:02,488 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 42 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 05:22:02,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 324 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 525 Invalid, 0 Unknown, 26 Unchecked, 0.3s Time] [2022-01-18 05:22:02,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2022-01-18 05:22:02,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 457. [2022-01-18 05:22:02,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 456 states have (on average 3.085526315789474) internal successors, (1407), 456 states have internal predecessors, (1407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:22:02,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 1407 transitions. [2022-01-18 05:22:02,493 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 1407 transitions. Word has length 20 [2022-01-18 05:22:02,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:22:02,493 INFO L470 AbstractCegarLoop]: Abstraction has 457 states and 1407 transitions. [2022-01-18 05:22:02,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:22:02,493 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 1407 transitions. [2022-01-18 05:22:02,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:22:02,494 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:22:02,494 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:22:02,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (293)] Forceful destruction successful, exit code 0 [2022-01-18 05:22:02,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable482,293 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:22:02,694 INFO L402 AbstractCegarLoop]: === Iteration 484 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:22:02,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:22:02,694 INFO L85 PathProgramCache]: Analyzing trace with hash -292592655, now seen corresponding path program 93 times [2022-01-18 05:22:02,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:22:02,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424092611] [2022-01-18 05:22:02,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:22:02,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:22:02,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:22:03,121 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:22:03,121 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:22:03,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424092611] [2022-01-18 05:22:03,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424092611] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:22:03,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366433995] [2022-01-18 05:22:03,122 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:22:03,122 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:22:03,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:22:03,122 INFO L229 MonitoredProcess]: Starting monitored process 294 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:22:03,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (294)] Waiting until timeout for monitored process [2022-01-18 05:22:03,146 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 05:22:03,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:22:03,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-18 05:22:03,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:22:03,637 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:22:03,637 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 107 [2022-01-18 05:22:05,102 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:22:05,103 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 235 treesize of output 205 [2022-01-18 05:22:05,105 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 205 treesize of output 175 [2022-01-18 05:22:06,179 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:22:06,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:22:07,450 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:22:07,451 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 258 treesize of output 238 [2022-01-18 05:22:08,192 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:22:08,193 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2022-01-18 05:22:08,198 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:22:08,198 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 85 [2022-01-18 05:22:08,262 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:22:08,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366433995] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:22:08,262 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:22:08,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:22:08,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337263426] [2022-01-18 05:22:08,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:22:08,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:22:08,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:22:08,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:22:08,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:22:08,263 INFO L87 Difference]: Start difference. First operand 457 states and 1407 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:22:08,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:22:08,712 INFO L93 Difference]: Finished difference Result 624 states and 1932 transitions. [2022-01-18 05:22:08,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 05:22:08,712 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:22:08,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:22:08,713 INFO L225 Difference]: With dead ends: 624 [2022-01-18 05:22:08,713 INFO L226 Difference]: Without dead ends: 617 [2022-01-18 05:22:08,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=103, Invalid=709, Unknown=0, NotChecked=0, Total=812 [2022-01-18 05:22:08,714 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 98 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 425 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:22:08,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 270 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 341 Invalid, 0 Unknown, 425 Unchecked, 0.2s Time] [2022-01-18 05:22:08,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2022-01-18 05:22:08,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 459. [2022-01-18 05:22:08,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 458 states have (on average 3.087336244541485) internal successors, (1414), 458 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:22:08,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 1414 transitions. [2022-01-18 05:22:08,719 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 1414 transitions. Word has length 20 [2022-01-18 05:22:08,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:22:08,719 INFO L470 AbstractCegarLoop]: Abstraction has 459 states and 1414 transitions. [2022-01-18 05:22:08,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:22:08,719 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 1414 transitions. [2022-01-18 05:22:08,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:22:08,720 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:22:08,720 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:22:08,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (294)] Forceful destruction successful, exit code 0 [2022-01-18 05:22:08,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable483,294 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:22:08,920 INFO L402 AbstractCegarLoop]: === Iteration 485 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:22:08,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:22:08,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1401693573, now seen corresponding path program 94 times [2022-01-18 05:22:08,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:22:08,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968116837] [2022-01-18 05:22:08,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:22:08,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:22:08,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:22:09,302 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:22:09,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:22:09,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968116837] [2022-01-18 05:22:09,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968116837] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:22:09,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934850073] [2022-01-18 05:22:09,302 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 05:22:09,302 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:22:09,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:22:09,303 INFO L229 MonitoredProcess]: Starting monitored process 295 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:22:09,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (295)] Waiting until timeout for monitored process [2022-01-18 05:22:09,326 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 05:22:09,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:22:09,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 05:22:09,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:22:09,824 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:22:09,825 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 102 [2022-01-18 05:22:10,259 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:22:10,260 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 219 treesize of output 191 [2022-01-18 05:22:10,262 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 191 treesize of output 163 [2022-01-18 05:22:10,943 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:22:10,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:22:11,615 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:22:11,615 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 142 treesize of output 130 [2022-01-18 05:22:11,965 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:22:11,966 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-01-18 05:22:11,970 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:22:11,970 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 87 treesize of output 81 [2022-01-18 05:22:12,018 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:22:12,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934850073] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:22:12,018 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:22:12,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:22:12,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949426555] [2022-01-18 05:22:12,018 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:22:12,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:22:12,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:22:12,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:22:12,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:22:12,019 INFO L87 Difference]: Start difference. First operand 459 states and 1414 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:22:12,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:22:12,734 INFO L93 Difference]: Finished difference Result 594 states and 1830 transitions. [2022-01-18 05:22:12,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 05:22:12,734 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:22:12,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:22:12,735 INFO L225 Difference]: With dead ends: 594 [2022-01-18 05:22:12,735 INFO L226 Difference]: Without dead ends: 579 [2022-01-18 05:22:12,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=141, Invalid=1049, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 05:22:12,736 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 42 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 118 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:22:12,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 303 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 214 Invalid, 0 Unknown, 118 Unchecked, 0.1s Time] [2022-01-18 05:22:12,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2022-01-18 05:22:12,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 463. [2022-01-18 05:22:12,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 462 states have (on average 3.090909090909091) internal successors, (1428), 462 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:22:12,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 1428 transitions. [2022-01-18 05:22:12,741 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 1428 transitions. Word has length 20 [2022-01-18 05:22:12,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:22:12,741 INFO L470 AbstractCegarLoop]: Abstraction has 463 states and 1428 transitions. [2022-01-18 05:22:12,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:22:12,741 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 1428 transitions. [2022-01-18 05:22:12,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:22:12,742 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:22:12,742 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:22:12,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (295)] Forceful destruction successful, exit code 0 [2022-01-18 05:22:12,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable484,295 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:22:12,958 INFO L402 AbstractCegarLoop]: === Iteration 486 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:22:12,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:22:12,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1427469057, now seen corresponding path program 95 times [2022-01-18 05:22:12,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:22:12,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977523688] [2022-01-18 05:22:12,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:22:12,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:22:12,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:22:13,336 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:22:13,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:22:13,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977523688] [2022-01-18 05:22:13,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977523688] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:22:13,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454334215] [2022-01-18 05:22:13,336 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 05:22:13,336 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:22:13,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:22:13,337 INFO L229 MonitoredProcess]: Starting monitored process 296 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:22:13,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (296)] Waiting until timeout for monitored process [2022-01-18 05:22:13,361 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:22:13,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:22:13,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 05:22:13,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:22:13,623 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 122 treesize of output 104 [2022-01-18 05:22:13,859 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 221 treesize of output 193 [2022-01-18 05:22:13,861 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 193 treesize of output 165 [2022-01-18 05:22:14,740 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:22:14,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:22:15,323 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:22:15,323 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 127 treesize of output 115 [2022-01-18 05:22:15,636 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 05:22:15,636 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 97 treesize of output 84 [2022-01-18 05:22:15,638 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 65 [2022-01-18 05:22:15,642 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:22:15,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454334215] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:22:15,642 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:22:15,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-01-18 05:22:15,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437116578] [2022-01-18 05:22:15,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:22:15,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-18 05:22:15,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:22:15,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-18 05:22:15,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=673, Unknown=0, NotChecked=0, Total=756 [2022-01-18 05:22:15,643 INFO L87 Difference]: Start difference. First operand 463 states and 1428 transitions. Second operand has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 28 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:22:18,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:22:18,771 INFO L93 Difference]: Finished difference Result 767 states and 2235 transitions. [2022-01-18 05:22:18,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 05:22:18,771 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 28 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:22:18,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:22:18,772 INFO L225 Difference]: With dead ends: 767 [2022-01-18 05:22:18,772 INFO L226 Difference]: Without dead ends: 737 [2022-01-18 05:22:18,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=295, Invalid=1685, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 05:22:18,773 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 188 mSDsluCounter, 907 mSDsCounter, 0 mSdLazyCounter, 1207 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 1238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 05:22:18,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [188 Valid, 420 Invalid, 1238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1207 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 05:22:18,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2022-01-18 05:22:18,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 422. [2022-01-18 05:22:18,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 421 states have (on average 3.0617577197149646) internal successors, (1289), 421 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:22:18,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 1289 transitions. [2022-01-18 05:22:18,783 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 1289 transitions. Word has length 20 [2022-01-18 05:22:18,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:22:18,784 INFO L470 AbstractCegarLoop]: Abstraction has 422 states and 1289 transitions. [2022-01-18 05:22:18,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 28 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:22:18,784 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 1289 transitions. [2022-01-18 05:22:18,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:22:18,784 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:22:18,784 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:22:18,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (296)] Forceful destruction successful, exit code 0 [2022-01-18 05:22:18,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 296 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable485 [2022-01-18 05:22:18,985 INFO L402 AbstractCegarLoop]: === Iteration 487 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:22:18,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:22:18,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1235273679, now seen corresponding path program 96 times [2022-01-18 05:22:18,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:22:18,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982692622] [2022-01-18 05:22:18,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:22:18,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:22:18,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:22:19,481 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:22:19,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:22:19,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982692622] [2022-01-18 05:22:19,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982692622] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:22:19,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530919680] [2022-01-18 05:22:19,482 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 05:22:19,482 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:22:19,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:22:19,482 INFO L229 MonitoredProcess]: Starting monitored process 297 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:22:19,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (297)] Waiting until timeout for monitored process [2022-01-18 05:22:19,506 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 05:22:19,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:22:19,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 05:22:19,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:22:19,847 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:22:19,848 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 102 [2022-01-18 05:22:21,060 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:22:21,061 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 232 treesize of output 202 [2022-01-18 05:22:21,063 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 202 treesize of output 172 [2022-01-18 05:22:21,697 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:22:21,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:22:22,408 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:22:22,408 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 129 treesize of output 119 [2022-01-18 05:22:22,748 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:22:22,748 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 101 [2022-01-18 05:22:22,753 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:22:22,753 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 85 [2022-01-18 05:22:22,809 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:22:22,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530919680] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:22:22,809 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:22:22,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:22:22,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736659193] [2022-01-18 05:22:22,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:22:22,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:22:22,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:22:22,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:22:22,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:22:22,810 INFO L87 Difference]: Start difference. First operand 422 states and 1289 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:22:24,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:22:24,684 INFO L93 Difference]: Finished difference Result 691 states and 2025 transitions. [2022-01-18 05:22:24,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-18 05:22:24,685 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:22:24,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:22:24,686 INFO L225 Difference]: With dead ends: 691 [2022-01-18 05:22:24,686 INFO L226 Difference]: Without dead ends: 606 [2022-01-18 05:22:24,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=207, Invalid=1353, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 05:22:24,686 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 185 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 142 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 05:22:24,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 369 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 493 Invalid, 0 Unknown, 142 Unchecked, 0.3s Time] [2022-01-18 05:22:24,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2022-01-18 05:22:24,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 440. [2022-01-18 05:22:24,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 439 states have (on average 3.068337129840547) internal successors, (1347), 439 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:22:24,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 1347 transitions. [2022-01-18 05:22:24,691 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 1347 transitions. Word has length 20 [2022-01-18 05:22:24,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:22:24,691 INFO L470 AbstractCegarLoop]: Abstraction has 440 states and 1347 transitions. [2022-01-18 05:22:24,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:22:24,691 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 1347 transitions. [2022-01-18 05:22:24,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:22:24,692 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:22:24,692 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:22:24,707 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (297)] Ended with exit code 0 [2022-01-18 05:22:24,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 297 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable486 [2022-01-18 05:22:24,892 INFO L402 AbstractCegarLoop]: === Iteration 488 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:22:24,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:22:24,892 INFO L85 PathProgramCache]: Analyzing trace with hash -563500751, now seen corresponding path program 97 times [2022-01-18 05:22:24,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:22:24,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702036408] [2022-01-18 05:22:24,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:22:24,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:22:24,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:22:25,222 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:22:25,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:22:25,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702036408] [2022-01-18 05:22:25,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702036408] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:22:25,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591016536] [2022-01-18 05:22:25,222 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 05:22:25,222 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:22:25,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:22:25,223 INFO L229 MonitoredProcess]: Starting monitored process 298 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:22:25,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (298)] Waiting until timeout for monitored process [2022-01-18 05:22:25,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:22:25,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 33 conjunts are in the unsatisfiable core [2022-01-18 05:22:25,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:22:25,831 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:22:25,832 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2022-01-18 05:22:26,639 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:22:26,640 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2022-01-18 05:22:26,643 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 177 treesize of output 147 [2022-01-18 05:22:29,068 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:22:29,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:22:30,616 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:22:30,616 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 181 treesize of output 167 [2022-01-18 05:22:31,167 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:22:31,167 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 105 [2022-01-18 05:22:31,173 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:22:31,174 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 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 [2022-01-18 05:22:31,259 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:22:31,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591016536] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:22:31,259 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:22:31,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:22:31,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972840720] [2022-01-18 05:22:31,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:22:31,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:22:31,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:22:31,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:22:31,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=617, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:22:31,260 INFO L87 Difference]: Start difference. First operand 440 states and 1347 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:22:31,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:22:31,930 INFO L93 Difference]: Finished difference Result 716 states and 2155 transitions. [2022-01-18 05:22:31,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 05:22:31,931 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:22:31,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:22:31,932 INFO L225 Difference]: With dead ends: 716 [2022-01-18 05:22:31,932 INFO L226 Difference]: Without dead ends: 709 [2022-01-18 05:22:31,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=105, Invalid=707, Unknown=0, NotChecked=0, Total=812 [2022-01-18 05:22:31,932 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 61 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 199 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:22:31,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 287 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 340 Invalid, 0 Unknown, 199 Unchecked, 0.2s Time] [2022-01-18 05:22:31,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2022-01-18 05:22:31,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 443. [2022-01-18 05:22:31,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 442 states have (on average 3.070135746606335) internal successors, (1357), 442 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:22:31,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 1357 transitions. [2022-01-18 05:22:31,938 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 1357 transitions. Word has length 20 [2022-01-18 05:22:31,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:22:31,938 INFO L470 AbstractCegarLoop]: Abstraction has 443 states and 1357 transitions. [2022-01-18 05:22:31,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:22:31,938 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 1357 transitions. [2022-01-18 05:22:31,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:22:31,939 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:22:31,939 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:22:31,954 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (298)] Ended with exit code 0 [2022-01-18 05:22:32,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable487,298 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:22:32,139 INFO L402 AbstractCegarLoop]: === Iteration 489 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:22:32,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:22:32,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1106492785, now seen corresponding path program 98 times [2022-01-18 05:22:32,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:22:32,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937186229] [2022-01-18 05:22:32,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:22:32,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:22:32,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:22:32,579 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:22:32,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:22:32,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937186229] [2022-01-18 05:22:32,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937186229] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:22:32,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743567054] [2022-01-18 05:22:32,580 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 05:22:32,580 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:22:32,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:22:32,581 INFO L229 MonitoredProcess]: Starting monitored process 299 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:22:32,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (299)] Waiting until timeout for monitored process [2022-01-18 05:22:32,605 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:22:32,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:22:32,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 31 conjunts are in the unsatisfiable core [2022-01-18 05:22:32,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:22:33,369 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:22:33,369 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 147 treesize of output 127 [2022-01-18 05:22:34,435 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:22:34,436 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 300 treesize of output 264 [2022-01-18 05:22:34,438 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 264 treesize of output 228 [2022-01-18 05:22:35,961 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:22:35,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:22:37,077 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:22:37,078 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 223 treesize of output 211 [2022-01-18 05:22:38,039 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:22:38,039 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 112 treesize of output 104 [2022-01-18 05:22:38,045 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:22:38,046 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 96 treesize of output 88 [2022-01-18 05:22:38,145 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:22:38,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743567054] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:22:38,145 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:22:38,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:22:38,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044824946] [2022-01-18 05:22:38,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:22:38,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:22:38,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:22:38,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:22:38,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:22:38,146 INFO L87 Difference]: Start difference. First operand 443 states and 1357 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:22:38,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:22:38,820 INFO L93 Difference]: Finished difference Result 709 states and 2149 transitions. [2022-01-18 05:22:38,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 05:22:38,821 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:22:38,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:22:38,822 INFO L225 Difference]: With dead ends: 709 [2022-01-18 05:22:38,822 INFO L226 Difference]: Without dead ends: 702 [2022-01-18 05:22:38,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=104, Invalid=708, Unknown=0, NotChecked=0, Total=812 [2022-01-18 05:22:38,822 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 53 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 199 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:22:38,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 309 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 380 Invalid, 0 Unknown, 199 Unchecked, 0.2s Time] [2022-01-18 05:22:38,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2022-01-18 05:22:38,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 449. [2022-01-18 05:22:38,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 448 states have (on average 3.064732142857143) internal successors, (1373), 448 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:22:38,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 1373 transitions. [2022-01-18 05:22:38,828 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 1373 transitions. Word has length 20 [2022-01-18 05:22:38,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:22:38,828 INFO L470 AbstractCegarLoop]: Abstraction has 449 states and 1373 transitions. [2022-01-18 05:22:38,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:22:38,828 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 1373 transitions. [2022-01-18 05:22:38,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:22:38,828 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:22:38,828 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:22:38,843 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (299)] Ended with exit code 0 [2022-01-18 05:22:39,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 299 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable488 [2022-01-18 05:22:39,029 INFO L402 AbstractCegarLoop]: === Iteration 490 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:22:39,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:22:39,029 INFO L85 PathProgramCache]: Analyzing trace with hash -518607439, now seen corresponding path program 99 times [2022-01-18 05:22:39,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:22:39,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714873983] [2022-01-18 05:22:39,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:22:39,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:22:39,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:22:39,577 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:22:39,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:22:39,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714873983] [2022-01-18 05:22:39,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714873983] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:22:39,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411477433] [2022-01-18 05:22:39,577 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:22:39,577 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:22:39,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:22:39,578 INFO L229 MonitoredProcess]: Starting monitored process 300 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:22:39,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (300)] Waiting until timeout for monitored process [2022-01-18 05:22:39,602 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 05:22:39,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:22:39,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 32 conjunts are in the unsatisfiable core [2022-01-18 05:22:39,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:22:40,180 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:22:40,180 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 102 [2022-01-18 05:22:41,049 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:22:41,050 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 226 treesize of output 196 [2022-01-18 05:22:41,053 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 196 treesize of output 166 [2022-01-18 05:22:42,880 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:22:42,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:22:44,497 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:22:44,497 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 204 treesize of output 192 [2022-01-18 05:22:45,452 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:22:45,453 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 162 treesize of output 148 [2022-01-18 05:22:45,460 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:22:45,461 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 140 treesize of output 126 [2022-01-18 05:22:45,700 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:22:45,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411477433] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:22:45,701 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:22:45,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:22:45,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102596163] [2022-01-18 05:22:45,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:22:45,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:22:45,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:22:45,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:22:45,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:22:45,701 INFO L87 Difference]: Start difference. First operand 449 states and 1373 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:22:46,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:22:46,885 INFO L93 Difference]: Finished difference Result 671 states and 2020 transitions. [2022-01-18 05:22:46,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 05:22:46,885 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:22:46,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:22:46,886 INFO L225 Difference]: With dead ends: 671 [2022-01-18 05:22:46,886 INFO L226 Difference]: Without dead ends: 668 [2022-01-18 05:22:46,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=147, Invalid=1185, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 05:22:46,887 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 87 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 393 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:22:46,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 290 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 248 Invalid, 0 Unknown, 393 Unchecked, 0.1s Time] [2022-01-18 05:22:46,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2022-01-18 05:22:46,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 449. [2022-01-18 05:22:46,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 448 states have (on average 3.0691964285714284) internal successors, (1375), 448 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:22:46,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 1375 transitions. [2022-01-18 05:22:46,892 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 1375 transitions. Word has length 20 [2022-01-18 05:22:46,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:22:46,892 INFO L470 AbstractCegarLoop]: Abstraction has 449 states and 1375 transitions. [2022-01-18 05:22:46,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:22:46,892 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 1375 transitions. [2022-01-18 05:22:46,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:22:46,893 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:22:46,893 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] [2022-01-18 05:22:46,908 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (300)] Ended with exit code 0 [2022-01-18 05:22:47,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable489,300 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:22:47,093 INFO L402 AbstractCegarLoop]: === Iteration 491 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:22:47,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:22:47,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1396524483, now seen corresponding path program 100 times [2022-01-18 05:22:47,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:22:47,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38389582] [2022-01-18 05:22:47,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:22:47,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:22:47,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:22:47,422 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:22:47,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:22:47,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38389582] [2022-01-18 05:22:47,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38389582] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:22:47,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142081875] [2022-01-18 05:22:47,423 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 05:22:47,423 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:22:47,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:22:47,424 INFO L229 MonitoredProcess]: Starting monitored process 301 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:22:47,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (301)] Waiting until timeout for monitored process [2022-01-18 05:22:47,446 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 05:22:47,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:22:47,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 05:22:47,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:22:47,997 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:22:47,998 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2022-01-18 05:22:48,779 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:22:48,780 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2022-01-18 05:22:48,782 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 147 treesize of output 123 [2022-01-18 05:22:49,062 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:22:49,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:22:49,676 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:22:49,676 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 137 treesize of output 125 [2022-01-18 05:22:50,064 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:22:50,064 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-01-18 05:22:50,069 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:22:50,069 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-01-18 05:22:50,112 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:22:50,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142081875] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:22:50,112 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:22:50,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:22:50,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064703138] [2022-01-18 05:22:50,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:22:50,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:22:50,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:22:50,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:22:50,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:22:50,112 INFO L87 Difference]: Start difference. First operand 449 states and 1375 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:22:50,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:22:50,293 INFO L93 Difference]: Finished difference Result 677 states and 2014 transitions. [2022-01-18 05:22:50,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 05:22:50,293 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:22:50,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:22:50,294 INFO L225 Difference]: With dead ends: 677 [2022-01-18 05:22:50,294 INFO L226 Difference]: Without dead ends: 670 [2022-01-18 05:22:50,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=95, Invalid=661, Unknown=0, NotChecked=0, Total=756 [2022-01-18 05:22:50,294 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 49 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 230 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:22:50,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 344 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 315 Invalid, 0 Unknown, 230 Unchecked, 0.1s Time] [2022-01-18 05:22:50,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2022-01-18 05:22:50,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 447. [2022-01-18 05:22:50,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 446 states have (on average 3.0739910313901344) internal successors, (1371), 446 states have internal predecessors, (1371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:22:50,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 1371 transitions. [2022-01-18 05:22:50,299 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 1371 transitions. Word has length 20 [2022-01-18 05:22:50,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:22:50,299 INFO L470 AbstractCegarLoop]: Abstraction has 447 states and 1371 transitions. [2022-01-18 05:22:50,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:22:50,299 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 1371 transitions. [2022-01-18 05:22:50,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:22:50,300 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:22:50,300 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] [2022-01-18 05:22:50,315 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (301)] Ended with exit code 0 [2022-01-18 05:22:50,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable490,301 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:22:50,500 INFO L402 AbstractCegarLoop]: === Iteration 492 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:22:50,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:22:50,501 INFO L85 PathProgramCache]: Analyzing trace with hash -158754613, now seen corresponding path program 101 times [2022-01-18 05:22:50,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:22:50,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473365367] [2022-01-18 05:22:50,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:22:50,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:22:50,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:22:50,832 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:22:50,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:22:50,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473365367] [2022-01-18 05:22:50,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473365367] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:22:50,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931438192] [2022-01-18 05:22:50,832 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 05:22:50,832 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:22:50,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:22:50,842 INFO L229 MonitoredProcess]: Starting monitored process 302 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:22:50,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (302)] Waiting until timeout for monitored process [2022-01-18 05:22:50,864 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:22:50,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:22:50,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 05:22:50,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:22:51,074 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 122 treesize of output 104 [2022-01-18 05:22:51,577 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 223 treesize of output 193 [2022-01-18 05:22:51,579 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 193 treesize of output 163 [2022-01-18 05:22:52,300 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:22:52,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:22:52,973 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:22:52,973 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 122 treesize of output 110 [2022-01-18 05:22:53,251 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 05:22:53,251 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 84 [2022-01-18 05:22:53,253 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 65 [2022-01-18 05:22:53,257 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:22:53,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931438192] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:22:53,257 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:22:53,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-01-18 05:22:53,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446490079] [2022-01-18 05:22:53,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:22:53,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-18 05:22:53,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:22:53,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-18 05:22:53,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=670, Unknown=0, NotChecked=0, Total=756 [2022-01-18 05:22:53,258 INFO L87 Difference]: Start difference. First operand 447 states and 1371 transitions. Second operand has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 28 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:22:56,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:22:56,304 INFO L93 Difference]: Finished difference Result 848 states and 2396 transitions. [2022-01-18 05:22:56,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 05:22:56,304 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 28 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:22:56,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:22:56,305 INFO L225 Difference]: With dead ends: 848 [2022-01-18 05:22:56,305 INFO L226 Difference]: Without dead ends: 834 [2022-01-18 05:22:56,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=346, Invalid=1634, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 05:22:56,305 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 287 mSDsluCounter, 768 mSDsCounter, 0 mSdLazyCounter, 941 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 1049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 05:22:56,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [287 Valid, 359 Invalid, 1049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 941 Invalid, 0 Unknown, 62 Unchecked, 0.5s Time] [2022-01-18 05:22:56,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2022-01-18 05:22:56,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 438. [2022-01-18 05:22:56,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 437 states have (on average 3.066361556064073) internal successors, (1340), 437 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) [2022-01-18 05:22:56,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 1340 transitions. [2022-01-18 05:22:56,312 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 1340 transitions. Word has length 20 [2022-01-18 05:22:56,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:22:56,312 INFO L470 AbstractCegarLoop]: Abstraction has 438 states and 1340 transitions. [2022-01-18 05:22:56,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 28 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:22:56,312 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 1340 transitions. [2022-01-18 05:22:56,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:22:56,312 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:22:56,312 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] [2022-01-18 05:22:56,327 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (302)] Ended with exit code 0 [2022-01-18 05:22:56,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 302 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable491 [2022-01-18 05:22:56,513 INFO L402 AbstractCegarLoop]: === Iteration 493 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:22:56,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:22:56,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1034782921, now seen corresponding path program 102 times [2022-01-18 05:22:56,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:22:56,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874161286] [2022-01-18 05:22:56,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:22:56,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:22:56,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:22:56,834 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:22:56,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:22:56,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874161286] [2022-01-18 05:22:56,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874161286] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:22:56,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379579313] [2022-01-18 05:22:56,834 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 05:22:56,834 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:22:56,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:22:56,835 INFO L229 MonitoredProcess]: Starting monitored process 303 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:22:56,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (303)] Waiting until timeout for monitored process [2022-01-18 05:22:56,858 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 05:22:56,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:22:56,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 05:22:56,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:22:57,272 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:22:57,273 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 122 treesize of output 104 [2022-01-18 05:22:57,959 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:22:57,960 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 209 treesize of output 179 [2022-01-18 05:22:57,962 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 179 treesize of output 149 [2022-01-18 05:22:58,589 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:22:58,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:22:59,197 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:22:59,197 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 136 treesize of output 124 [2022-01-18 05:22:59,596 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:22:59,596 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 109 treesize of output 101 [2022-01-18 05:22:59,601 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:22:59,602 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 85 [2022-01-18 05:22:59,665 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:22:59,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379579313] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:22:59,665 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:22:59,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:22:59,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888840537] [2022-01-18 05:22:59,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:22:59,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:22:59,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:22:59,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:22:59,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:22:59,666 INFO L87 Difference]: Start difference. First operand 438 states and 1340 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:23:00,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:23:00,111 INFO L93 Difference]: Finished difference Result 601 states and 1859 transitions. [2022-01-18 05:23:00,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 05:23:00,111 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:23:00,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:23:00,112 INFO L225 Difference]: With dead ends: 601 [2022-01-18 05:23:00,112 INFO L226 Difference]: Without dead ends: 586 [2022-01-18 05:23:00,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=104, Invalid=708, Unknown=0, NotChecked=0, Total=812 [2022-01-18 05:23:00,112 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 71 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 380 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:23:00,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 299 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 355 Invalid, 0 Unknown, 380 Unchecked, 0.2s Time] [2022-01-18 05:23:00,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2022-01-18 05:23:00,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 440. [2022-01-18 05:23:00,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 439 states have (on average 3.068337129840547) internal successors, (1347), 439 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:23:00,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 1347 transitions. [2022-01-18 05:23:00,117 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 1347 transitions. Word has length 20 [2022-01-18 05:23:00,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:23:00,117 INFO L470 AbstractCegarLoop]: Abstraction has 440 states and 1347 transitions. [2022-01-18 05:23:00,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:23:00,118 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 1347 transitions. [2022-01-18 05:23:00,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:23:00,118 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:23:00,118 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] [2022-01-18 05:23:00,133 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (303)] Ended with exit code 0 [2022-01-18 05:23:00,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable492,303 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:23:00,318 INFO L402 AbstractCegarLoop]: === Iteration 494 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:23:00,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:23:00,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1486987987, now seen corresponding path program 103 times [2022-01-18 05:23:00,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:23:00,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497430904] [2022-01-18 05:23:00,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:23:00,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:23:00,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:23:00,728 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:23:00,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:23:00,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497430904] [2022-01-18 05:23:00,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497430904] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:23:00,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198917689] [2022-01-18 05:23:00,729 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 05:23:00,729 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:23:00,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:23:00,729 INFO L229 MonitoredProcess]: Starting monitored process 304 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:23:00,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (304)] Waiting until timeout for monitored process [2022-01-18 05:23:00,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:23:00,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-18 05:23:00,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:23:01,386 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:23:01,386 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 147 treesize of output 127 [2022-01-18 05:23:02,819 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:23:02,819 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 317 treesize of output 277 [2022-01-18 05:23:02,822 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 277 treesize of output 237 [2022-01-18 05:23:04,163 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:23:04,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:23:05,234 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:23:05,234 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 228 treesize of output 216 [2022-01-18 05:23:06,116 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:23:06,116 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 101 treesize of output 95 [2022-01-18 05:23:06,121 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:23:06,121 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 87 treesize of output 81 [2022-01-18 05:23:06,173 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:23:06,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198917689] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:23:06,174 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:23:06,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:23:06,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872826478] [2022-01-18 05:23:06,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:23:06,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:23:06,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:23:06,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:23:06,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:23:06,174 INFO L87 Difference]: Start difference. First operand 440 states and 1347 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:23:06,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:23:06,932 INFO L93 Difference]: Finished difference Result 591 states and 1822 transitions. [2022-01-18 05:23:06,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 05:23:06,932 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:23:06,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:23:06,933 INFO L225 Difference]: With dead ends: 591 [2022-01-18 05:23:06,933 INFO L226 Difference]: Without dead ends: 584 [2022-01-18 05:23:06,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=104, Invalid=708, Unknown=0, NotChecked=0, Total=812 [2022-01-18 05:23:06,934 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 57 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 208 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:23:06,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 282 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 364 Invalid, 0 Unknown, 208 Unchecked, 0.2s Time] [2022-01-18 05:23:06,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2022-01-18 05:23:06,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 446. [2022-01-18 05:23:06,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 445 states have (on average 3.0719101123595505) internal successors, (1367), 445 states have internal predecessors, (1367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:23:06,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 1367 transitions. [2022-01-18 05:23:06,939 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 1367 transitions. Word has length 20 [2022-01-18 05:23:06,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:23:06,939 INFO L470 AbstractCegarLoop]: Abstraction has 446 states and 1367 transitions. [2022-01-18 05:23:06,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:23:06,939 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 1367 transitions. [2022-01-18 05:23:06,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:23:06,939 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:23:06,939 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:23:06,954 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (304)] Ended with exit code 0 [2022-01-18 05:23:07,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable493,304 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:23:07,140 INFO L402 AbstractCegarLoop]: === Iteration 495 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:23:07,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:23:07,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1044743343, now seen corresponding path program 104 times [2022-01-18 05:23:07,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:23:07,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651389165] [2022-01-18 05:23:07,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:23:07,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:23:07,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:23:07,544 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:23:07,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:23:07,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651389165] [2022-01-18 05:23:07,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651389165] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:23:07,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364917265] [2022-01-18 05:23:07,544 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 05:23:07,544 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:23:07,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:23:07,545 INFO L229 MonitoredProcess]: Starting monitored process 305 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:23:07,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (305)] Waiting until timeout for monitored process [2022-01-18 05:23:07,569 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:23:07,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:23:07,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-18 05:23:07,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:23:08,097 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:23:08,097 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 107 [2022-01-18 05:23:09,426 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:23:09,427 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 235 treesize of output 205 [2022-01-18 05:23:09,429 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 205 treesize of output 175 [2022-01-18 05:23:10,572 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:23:10,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:23:11,717 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:23:11,717 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 228 treesize of output 216 [2022-01-18 05:23:12,426 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:23:12,426 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-01-18 05:23:12,431 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:23:12,431 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 87 treesize of output 81 [2022-01-18 05:23:12,485 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:23:12,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364917265] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:23:12,485 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:23:12,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:23:12,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414530936] [2022-01-18 05:23:12,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:23:12,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:23:12,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:23:12,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:23:12,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:23:12,486 INFO L87 Difference]: Start difference. First operand 446 states and 1367 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:23:13,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:23:13,226 INFO L93 Difference]: Finished difference Result 587 states and 1811 transitions. [2022-01-18 05:23:13,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 05:23:13,226 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:23:13,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:23:13,227 INFO L225 Difference]: With dead ends: 587 [2022-01-18 05:23:13,227 INFO L226 Difference]: Without dead ends: 580 [2022-01-18 05:23:13,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=104, Invalid=708, Unknown=0, NotChecked=0, Total=812 [2022-01-18 05:23:13,228 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 54 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 77 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:23:13,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 297 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 378 Invalid, 0 Unknown, 77 Unchecked, 0.2s Time] [2022-01-18 05:23:13,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2022-01-18 05:23:13,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 448. [2022-01-18 05:23:13,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 447 states have (on average 3.0715883668903805) internal successors, (1373), 447 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:23:13,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 1373 transitions. [2022-01-18 05:23:13,232 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 1373 transitions. Word has length 20 [2022-01-18 05:23:13,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:23:13,233 INFO L470 AbstractCegarLoop]: Abstraction has 448 states and 1373 transitions. [2022-01-18 05:23:13,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:23:13,233 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 1373 transitions. [2022-01-18 05:23:13,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:23:13,233 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:23:13,233 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:23:13,248 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (305)] Ended with exit code 0 [2022-01-18 05:23:13,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 305 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable494 [2022-01-18 05:23:13,434 INFO L402 AbstractCegarLoop]: === Iteration 496 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:23:13,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:23:13,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1036382749, now seen corresponding path program 105 times [2022-01-18 05:23:13,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:23:13,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637586144] [2022-01-18 05:23:13,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:23:13,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:23:13,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:23:13,864 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:23:13,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:23:13,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637586144] [2022-01-18 05:23:13,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637586144] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:23:13,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199502924] [2022-01-18 05:23:13,864 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:23:13,864 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:23:13,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:23:13,865 INFO L229 MonitoredProcess]: Starting monitored process 306 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:23:13,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (306)] Waiting until timeout for monitored process [2022-01-18 05:23:13,889 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 05:23:13,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:23:13,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 05:23:13,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:23:14,357 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:23:14,358 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2022-01-18 05:23:15,015 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:23:15,015 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 216 treesize of output 188 [2022-01-18 05:23:15,018 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 188 treesize of output 160 [2022-01-18 05:23:15,734 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:23:15,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:23:16,364 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:23:16,364 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 147 treesize of output 135 [2022-01-18 05:23:16,672 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:23:16,672 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-01-18 05:23:16,679 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:23:16,679 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-01-18 05:23:16,727 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:23:16,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199502924] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:23:16,727 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:23:16,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:23:16,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106734033] [2022-01-18 05:23:16,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:23:16,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:23:16,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:23:16,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:23:16,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:23:16,728 INFO L87 Difference]: Start difference. First operand 448 states and 1373 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:23:18,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:23:18,013 INFO L93 Difference]: Finished difference Result 616 states and 1888 transitions. [2022-01-18 05:23:18,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-18 05:23:18,013 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:23:18,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:23:18,014 INFO L225 Difference]: With dead ends: 616 [2022-01-18 05:23:18,014 INFO L226 Difference]: Without dead ends: 609 [2022-01-18 05:23:18,014 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=149, Invalid=1183, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 05:23:18,014 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 102 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 224 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:23:18,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 339 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 454 Invalid, 0 Unknown, 224 Unchecked, 0.2s Time] [2022-01-18 05:23:18,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2022-01-18 05:23:18,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 449. [2022-01-18 05:23:18,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 448 states have (on average 3.0691964285714284) internal successors, (1375), 448 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:23:18,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 1375 transitions. [2022-01-18 05:23:18,019 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 1375 transitions. Word has length 20 [2022-01-18 05:23:18,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:23:18,019 INFO L470 AbstractCegarLoop]: Abstraction has 449 states and 1375 transitions. [2022-01-18 05:23:18,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:23:18,019 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 1375 transitions. [2022-01-18 05:23:18,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:23:18,020 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:23:18,020 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:23:18,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (306)] Forceful destruction successful, exit code 0 [2022-01-18 05:23:18,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable495,306 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:23:18,220 INFO L402 AbstractCegarLoop]: === Iteration 497 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:23:18,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:23:18,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1326414447, now seen corresponding path program 106 times [2022-01-18 05:23:18,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:23:18,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531030294] [2022-01-18 05:23:18,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:23:18,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:23:18,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:23:18,535 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:23:18,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:23:18,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531030294] [2022-01-18 05:23:18,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531030294] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:23:18,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963083119] [2022-01-18 05:23:18,535 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 05:23:18,535 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:23:18,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:23:18,536 INFO L229 MonitoredProcess]: Starting monitored process 307 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:23:18,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (307)] Waiting until timeout for monitored process [2022-01-18 05:23:18,560 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 05:23:18,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:23:18,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 05:23:18,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:23:19,108 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:23:19,108 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2022-01-18 05:23:19,852 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:23:19,852 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 168 treesize of output 144 [2022-01-18 05:23:19,854 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 144 treesize of output 120 [2022-01-18 05:23:20,162 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:23:20,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:23:20,751 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:23:20,751 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 138 treesize of output 126 [2022-01-18 05:23:21,095 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:23:21,095 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-01-18 05:23:21,101 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:23:21,101 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-01-18 05:23:21,143 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:23:21,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963083119] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:23:21,144 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:23:21,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:23:21,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974048305] [2022-01-18 05:23:21,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:23:21,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:23:21,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:23:21,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:23:21,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:23:21,144 INFO L87 Difference]: Start difference. First operand 449 states and 1375 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:23:21,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:23:21,366 INFO L93 Difference]: Finished difference Result 645 states and 1942 transitions. [2022-01-18 05:23:21,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 05:23:21,366 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:23:21,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:23:21,367 INFO L225 Difference]: With dead ends: 645 [2022-01-18 05:23:21,367 INFO L226 Difference]: Without dead ends: 638 [2022-01-18 05:23:21,367 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=95, Invalid=661, Unknown=0, NotChecked=0, Total=756 [2022-01-18 05:23:21,367 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 50 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 309 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:23:21,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 368 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 419 Invalid, 0 Unknown, 309 Unchecked, 0.2s Time] [2022-01-18 05:23:21,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2022-01-18 05:23:21,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 450. [2022-01-18 05:23:21,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 449 states have (on average 3.066815144766147) internal successors, (1377), 449 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:23:21,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 1377 transitions. [2022-01-18 05:23:21,373 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 1377 transitions. Word has length 20 [2022-01-18 05:23:21,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:23:21,373 INFO L470 AbstractCegarLoop]: Abstraction has 450 states and 1377 transitions. [2022-01-18 05:23:21,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:23:21,373 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 1377 transitions. [2022-01-18 05:23:21,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:23:21,373 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:23:21,373 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:23:21,388 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (307)] Ended with exit code 0 [2022-01-18 05:23:21,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 307 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable496 [2022-01-18 05:23:21,574 INFO L402 AbstractCegarLoop]: === Iteration 498 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:23:21,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:23:21,574 INFO L85 PathProgramCache]: Analyzing trace with hash -668050709, now seen corresponding path program 107 times [2022-01-18 05:23:21,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:23:21,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020025994] [2022-01-18 05:23:21,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:23:21,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:23:21,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:23:22,193 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:23:22,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:23:22,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020025994] [2022-01-18 05:23:22,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020025994] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:23:22,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891524567] [2022-01-18 05:23:22,194 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 05:23:22,194 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:23:22,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:23:22,194 INFO L229 MonitoredProcess]: Starting monitored process 308 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:23:22,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (308)] Waiting until timeout for monitored process [2022-01-18 05:23:22,218 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:23:22,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:23:22,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 05:23:22,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:23:22,485 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 120 treesize of output 102 [2022-01-18 05:23:22,721 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 210 treesize of output 182 [2022-01-18 05:23:22,723 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 182 treesize of output 154 [2022-01-18 05:23:23,323 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:23:23,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:23:23,848 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:23:23,848 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 126 treesize of output 114 [2022-01-18 05:23:24,188 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 05:23:24,188 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 97 treesize of output 84 [2022-01-18 05:23:24,190 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 65 [2022-01-18 05:23:24,194 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:23:24,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891524567] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:23:24,194 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:23:24,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-01-18 05:23:24,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985053994] [2022-01-18 05:23:24,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:23:24,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-18 05:23:24,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:23:24,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-18 05:23:24,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=669, Unknown=0, NotChecked=0, Total=756 [2022-01-18 05:23:24,195 INFO L87 Difference]: Start difference. First operand 450 states and 1377 transitions. Second operand has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 28 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:23:26,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:23:26,285 INFO L93 Difference]: Finished difference Result 770 states and 2203 transitions. [2022-01-18 05:23:26,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-18 05:23:26,286 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 28 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:23:26,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:23:26,287 INFO L225 Difference]: With dead ends: 770 [2022-01-18 05:23:26,287 INFO L226 Difference]: Without dead ends: 748 [2022-01-18 05:23:26,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=297, Invalid=1509, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 05:23:26,287 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 240 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 05:23:26,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [240 Valid, 338 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 916 Invalid, 0 Unknown, 4 Unchecked, 0.4s Time] [2022-01-18 05:23:26,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2022-01-18 05:23:26,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 430. [2022-01-18 05:23:26,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 429 states have (on average 3.041958041958042) internal successors, (1305), 429 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:23:26,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 1305 transitions. [2022-01-18 05:23:26,293 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 1305 transitions. Word has length 20 [2022-01-18 05:23:26,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:23:26,293 INFO L470 AbstractCegarLoop]: Abstraction has 430 states and 1305 transitions. [2022-01-18 05:23:26,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 28 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:23:26,293 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 1305 transitions. [2022-01-18 05:23:26,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:23:26,294 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:23:26,294 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:23:26,309 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (308)] Ended with exit code 0 [2022-01-18 05:23:26,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 308 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable497 [2022-01-18 05:23:26,494 INFO L402 AbstractCegarLoop]: === Iteration 499 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:23:26,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:23:26,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1620235289, now seen corresponding path program 108 times [2022-01-18 05:23:26,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:23:26,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596070781] [2022-01-18 05:23:26,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:23:26,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:23:26,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:23:26,812 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:23:26,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:23:26,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596070781] [2022-01-18 05:23:26,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596070781] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:23:26,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007884886] [2022-01-18 05:23:26,812 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 05:23:26,812 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:23:26,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:23:26,813 INFO L229 MonitoredProcess]: Starting monitored process 309 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:23:26,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (309)] Waiting until timeout for monitored process [2022-01-18 05:23:26,836 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 05:23:26,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:23:26,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 05:23:26,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:23:27,332 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:23:27,332 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 102 [2022-01-18 05:23:28,129 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:23:28,129 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2022-01-18 05:23:28,131 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-01-18 05:23:28,424 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:23:28,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:23:29,080 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:23:29,080 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 137 treesize of output 125 [2022-01-18 05:23:29,507 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:23:29,507 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 109 treesize of output 101 [2022-01-18 05:23:29,512 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:23:29,512 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 93 treesize of output 85 [2022-01-18 05:23:29,568 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:23:29,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007884886] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:23:29,568 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:23:29,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:23:29,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155753739] [2022-01-18 05:23:29,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:23:29,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:23:29,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:23:29,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:23:29,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:23:29,569 INFO L87 Difference]: Start difference. First operand 430 states and 1305 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:23:29,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:23:29,767 INFO L93 Difference]: Finished difference Result 587 states and 1765 transitions. [2022-01-18 05:23:29,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 05:23:29,767 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:23:29,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:23:29,768 INFO L225 Difference]: With dead ends: 587 [2022-01-18 05:23:29,768 INFO L226 Difference]: Without dead ends: 580 [2022-01-18 05:23:29,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=95, Invalid=661, Unknown=0, NotChecked=0, Total=756 [2022-01-18 05:23:29,768 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 65 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 343 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:23:29,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 371 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 353 Invalid, 0 Unknown, 343 Unchecked, 0.1s Time] [2022-01-18 05:23:29,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2022-01-18 05:23:29,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 436. [2022-01-18 05:23:29,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 435 states have (on average 3.0413793103448277) internal successors, (1323), 435 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) [2022-01-18 05:23:29,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 1323 transitions. [2022-01-18 05:23:29,773 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 1323 transitions. Word has length 20 [2022-01-18 05:23:29,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:23:29,774 INFO L470 AbstractCegarLoop]: Abstraction has 436 states and 1323 transitions. [2022-01-18 05:23:29,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:23:29,774 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 1323 transitions. [2022-01-18 05:23:29,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:23:29,774 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:23:29,774 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] [2022-01-18 05:23:29,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (309)] Forceful destruction successful, exit code 0 [2022-01-18 05:23:29,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable498,309 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:23:29,975 INFO L402 AbstractCegarLoop]: === Iteration 500 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:23:29,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:23:29,975 INFO L85 PathProgramCache]: Analyzing trace with hash -53509967, now seen corresponding path program 109 times [2022-01-18 05:23:29,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:23:29,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560030526] [2022-01-18 05:23:29,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:23:29,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:23:29,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:23:30,305 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:23:30,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:23:30,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560030526] [2022-01-18 05:23:30,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560030526] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:23:30,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655158019] [2022-01-18 05:23:30,305 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 05:23:30,305 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:23:30,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:23:30,306 INFO L229 MonitoredProcess]: Starting monitored process 310 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:23:30,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (310)] Waiting until timeout for monitored process [2022-01-18 05:23:30,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:23:30,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 05:23:30,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:23:30,882 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:23:30,883 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 119 treesize of output 101 [2022-01-18 05:23:31,583 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:23:31,584 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 159 treesize of output 135 [2022-01-18 05:23:31,586 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 135 treesize of output 111 [2022-01-18 05:23:31,979 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:23:31,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:23:32,601 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:23:32,601 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 138 treesize of output 126 [2022-01-18 05:23:32,947 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:23:32,948 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-01-18 05:23:32,952 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:23:32,953 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 87 treesize of output 81 [2022-01-18 05:23:33,004 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:23:33,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655158019] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:23:33,004 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:23:33,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:23:33,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979547871] [2022-01-18 05:23:33,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:23:33,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:23:33,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:23:33,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:23:33,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:23:33,005 INFO L87 Difference]: Start difference. First operand 436 states and 1323 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:23:33,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:23:33,179 INFO L93 Difference]: Finished difference Result 577 states and 1739 transitions. [2022-01-18 05:23:33,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 05:23:33,180 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:23:33,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:23:33,180 INFO L225 Difference]: With dead ends: 577 [2022-01-18 05:23:33,180 INFO L226 Difference]: Without dead ends: 570 [2022-01-18 05:23:33,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=95, Invalid=661, Unknown=0, NotChecked=0, Total=756 [2022-01-18 05:23:33,181 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 42 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 89 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:23:33,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 318 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 285 Invalid, 0 Unknown, 89 Unchecked, 0.1s Time] [2022-01-18 05:23:33,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2022-01-18 05:23:33,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 440. [2022-01-18 05:23:33,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 439 states have (on average 3.0455580865603644) internal successors, (1337), 439 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:23:33,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 1337 transitions. [2022-01-18 05:23:33,186 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 1337 transitions. Word has length 20 [2022-01-18 05:23:33,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:23:33,186 INFO L470 AbstractCegarLoop]: Abstraction has 440 states and 1337 transitions. [2022-01-18 05:23:33,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:23:33,186 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 1337 transitions. [2022-01-18 05:23:33,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:23:33,186 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:23:33,186 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:23:33,201 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (310)] Ended with exit code 0 [2022-01-18 05:23:33,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 310 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable499 [2022-01-18 05:23:33,387 INFO L402 AbstractCegarLoop]: === Iteration 501 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:23:33,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:23:33,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1666023031, now seen corresponding path program 110 times [2022-01-18 05:23:33,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:23:33,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615106283] [2022-01-18 05:23:33,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:23:33,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:23:33,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:23:33,701 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:23:33,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:23:33,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615106283] [2022-01-18 05:23:33,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615106283] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:23:33,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159064354] [2022-01-18 05:23:33,701 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 05:23:33,701 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:23:33,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:23:33,702 INFO L229 MonitoredProcess]: Starting monitored process 311 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:23:33,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (311)] Waiting until timeout for monitored process [2022-01-18 05:23:33,726 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:23:33,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:23:33,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 05:23:33,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:23:34,275 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:23:34,276 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 101 [2022-01-18 05:23:34,965 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:23:34,966 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 139 [2022-01-18 05:23:34,968 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 117 [2022-01-18 05:23:35,303 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:23:35,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:23:35,950 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:23:35,950 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 138 treesize of output 126 [2022-01-18 05:23:36,298 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:23:36,298 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 101 treesize of output 95 [2022-01-18 05:23:36,303 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:23:36,304 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-01-18 05:23:36,359 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:23:36,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159064354] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:23:36,360 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:23:36,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:23:36,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688349809] [2022-01-18 05:23:36,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:23:36,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:23:36,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:23:36,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:23:36,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:23:36,360 INFO L87 Difference]: Start difference. First operand 440 states and 1337 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:23:36,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:23:36,532 INFO L93 Difference]: Finished difference Result 615 states and 1867 transitions. [2022-01-18 05:23:36,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 05:23:36,533 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:23:36,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:23:36,534 INFO L225 Difference]: With dead ends: 615 [2022-01-18 05:23:36,534 INFO L226 Difference]: Without dead ends: 600 [2022-01-18 05:23:36,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=95, Invalid=661, Unknown=0, NotChecked=0, Total=756 [2022-01-18 05:23:36,534 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 62 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 304 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:23:36,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 305 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 262 Invalid, 0 Unknown, 304 Unchecked, 0.1s Time] [2022-01-18 05:23:36,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2022-01-18 05:23:36,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 450. [2022-01-18 05:23:36,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 449 states have (on average 3.0400890868596884) internal successors, (1365), 449 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:23:36,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 1365 transitions. [2022-01-18 05:23:36,539 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 1365 transitions. Word has length 20 [2022-01-18 05:23:36,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:23:36,539 INFO L470 AbstractCegarLoop]: Abstraction has 450 states and 1365 transitions. [2022-01-18 05:23:36,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:23:36,539 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 1365 transitions. [2022-01-18 05:23:36,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:23:36,540 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:23:36,540 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:23:36,555 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (311)] Ended with exit code 0 [2022-01-18 05:23:36,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable500,311 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:23:36,753 INFO L402 AbstractCegarLoop]: === Iteration 502 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:23:36,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:23:36,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1875692003, now seen corresponding path program 111 times [2022-01-18 05:23:36,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:23:36,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096081470] [2022-01-18 05:23:36,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:23:36,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:23:36,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:23:37,081 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:23:37,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:23:37,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096081470] [2022-01-18 05:23:37,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096081470] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:23:37,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899981862] [2022-01-18 05:23:37,081 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:23:37,081 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:23:37,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:23:37,082 INFO L229 MonitoredProcess]: Starting monitored process 312 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:23:37,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (312)] Waiting until timeout for monitored process [2022-01-18 05:23:37,105 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 05:23:37,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:23:37,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 05:23:37,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:23:37,648 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:23:37,648 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 124 treesize of output 106 [2022-01-18 05:23:38,582 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:23:38,583 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 180 treesize of output 156 [2022-01-18 05:23:38,585 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 156 treesize of output 132 [2022-01-18 05:23:38,965 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:23:38,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:23:39,629 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:23:39,629 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 139 treesize of output 127 [2022-01-18 05:23:40,007 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:23:40,007 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-01-18 05:23:40,012 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:23:40,012 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 87 treesize of output 81 [2022-01-18 05:23:40,060 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:23:40,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899981862] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:23:40,060 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:23:40,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:23:40,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615436715] [2022-01-18 05:23:40,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:23:40,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:23:40,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:23:40,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:23:40,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:23:40,061 INFO L87 Difference]: Start difference. First operand 450 states and 1365 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:23:40,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:23:40,215 INFO L93 Difference]: Finished difference Result 573 states and 1733 transitions. [2022-01-18 05:23:40,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 05:23:40,216 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:23:40,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:23:40,217 INFO L225 Difference]: With dead ends: 573 [2022-01-18 05:23:40,217 INFO L226 Difference]: Without dead ends: 566 [2022-01-18 05:23:40,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=95, Invalid=661, Unknown=0, NotChecked=0, Total=756 [2022-01-18 05:23:40,217 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 36 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 52 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:23:40,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 267 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 232 Invalid, 0 Unknown, 52 Unchecked, 0.1s Time] [2022-01-18 05:23:40,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2022-01-18 05:23:40,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 448. [2022-01-18 05:23:40,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 447 states have (on average 3.0357941834451903) internal successors, (1357), 447 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:23:40,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 1357 transitions. [2022-01-18 05:23:40,222 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 1357 transitions. Word has length 20 [2022-01-18 05:23:40,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:23:40,222 INFO L470 AbstractCegarLoop]: Abstraction has 448 states and 1357 transitions. [2022-01-18 05:23:40,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:23:40,222 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 1357 transitions. [2022-01-18 05:23:40,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:23:40,222 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:23:40,223 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] [2022-01-18 05:23:40,237 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (312)] Ended with exit code 0 [2022-01-18 05:23:40,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 312 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable501 [2022-01-18 05:23:40,423 INFO L402 AbstractCegarLoop]: === Iteration 503 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:23:40,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:23:40,423 INFO L85 PathProgramCache]: Analyzing trace with hash 2073929459, now seen corresponding path program 112 times [2022-01-18 05:23:40,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:23:40,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177631131] [2022-01-18 05:23:40,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:23:40,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:23:40,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:23:40,879 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:23:40,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:23:40,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177631131] [2022-01-18 05:23:40,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177631131] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:23:40,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050841228] [2022-01-18 05:23:40,879 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 05:23:40,879 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:23:40,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:23:40,880 INFO L229 MonitoredProcess]: Starting monitored process 313 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:23:40,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (313)] Waiting until timeout for monitored process [2022-01-18 05:23:40,903 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 05:23:40,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:23:40,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-18 05:23:40,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:23:41,516 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:23:41,516 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2022-01-18 05:23:41,945 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:23:41,945 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 202 treesize of output 174 [2022-01-18 05:23:41,948 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 174 treesize of output 146 [2022-01-18 05:23:43,311 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:23:43,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:23:44,261 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:23:44,262 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 170 treesize of output 156 [2022-01-18 05:23:44,774 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:23:44,774 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-01-18 05:23:44,779 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:23:44,779 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-01-18 05:23:44,828 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:23:44,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050841228] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:23:44,828 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:23:44,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:23:44,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123907168] [2022-01-18 05:23:44,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:23:44,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:23:44,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:23:44,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:23:44,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:23:44,829 INFO L87 Difference]: Start difference. First operand 448 states and 1357 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:23:46,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:23:46,165 INFO L93 Difference]: Finished difference Result 610 states and 1836 transitions. [2022-01-18 05:23:46,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-18 05:23:46,166 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:23:46,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:23:46,167 INFO L225 Difference]: With dead ends: 610 [2022-01-18 05:23:46,167 INFO L226 Difference]: Without dead ends: 557 [2022-01-18 05:23:46,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 23 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=178, Invalid=1228, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 05:23:46,167 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 101 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 164 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:23:46,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 393 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 442 Invalid, 0 Unknown, 164 Unchecked, 0.2s Time] [2022-01-18 05:23:46,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2022-01-18 05:23:46,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 465. [2022-01-18 05:23:46,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 464 states have (on average 3.0258620689655173) internal successors, (1404), 464 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:23:46,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 1404 transitions. [2022-01-18 05:23:46,172 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 1404 transitions. Word has length 20 [2022-01-18 05:23:46,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:23:46,172 INFO L470 AbstractCegarLoop]: Abstraction has 465 states and 1404 transitions. [2022-01-18 05:23:46,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:23:46,172 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 1404 transitions. [2022-01-18 05:23:46,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:23:46,172 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:23:46,173 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:23:46,187 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (313)] Ended with exit code 0 [2022-01-18 05:23:46,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable502,313 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:23:46,373 INFO L402 AbstractCegarLoop]: === Iteration 504 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:23:46,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:23:46,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1220717837, now seen corresponding path program 113 times [2022-01-18 05:23:46,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:23:46,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315949598] [2022-01-18 05:23:46,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:23:46,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:23:46,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:23:46,722 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:23:46,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:23:46,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315949598] [2022-01-18 05:23:46,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315949598] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:23:46,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820554417] [2022-01-18 05:23:46,722 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 05:23:46,722 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:23:46,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:23:46,723 INFO L229 MonitoredProcess]: Starting monitored process 314 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:23:46,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (314)] Waiting until timeout for monitored process [2022-01-18 05:23:46,746 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:23:46,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:23:46,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 05:23:46,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:23:46,997 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-01-18 05:23:47,581 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 169 treesize of output 145 [2022-01-18 05:23:47,582 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 121 [2022-01-18 05:23:47,851 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:23:47,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:23:48,518 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:23:48,518 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 133 treesize of output 121 [2022-01-18 05:23:48,851 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 05:23:48,851 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 78 [2022-01-18 05:23:48,853 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 61 [2022-01-18 05:23:48,857 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:23:48,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820554417] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:23:48,857 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:23:48,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-01-18 05:23:48,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802534220] [2022-01-18 05:23:48,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:23:48,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-18 05:23:48,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:23:48,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-18 05:23:48,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=680, Unknown=0, NotChecked=0, Total=756 [2022-01-18 05:23:48,858 INFO L87 Difference]: Start difference. First operand 465 states and 1404 transitions. Second operand has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 28 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:23:53,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:23:53,223 INFO L93 Difference]: Finished difference Result 1006 states and 2831 transitions. [2022-01-18 05:23:53,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-18 05:23:53,223 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 28 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:23:53,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:23:53,224 INFO L225 Difference]: With dead ends: 1006 [2022-01-18 05:23:53,224 INFO L226 Difference]: Without dead ends: 934 [2022-01-18 05:23:53,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=361, Invalid=1895, Unknown=0, NotChecked=0, Total=2256 [2022-01-18 05:23:53,224 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 360 mSDsluCounter, 1050 mSDsCounter, 0 mSdLazyCounter, 1197 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 1388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 82 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 05:23:53,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [360 Valid, 451 Invalid, 1388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1197 Invalid, 0 Unknown, 82 Unchecked, 0.7s Time] [2022-01-18 05:23:53,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2022-01-18 05:23:53,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 535. [2022-01-18 05:23:53,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 534 states have (on average 3.0205992509363297) internal successors, (1613), 534 states have internal predecessors, (1613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:23:53,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 1613 transitions. [2022-01-18 05:23:53,231 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 1613 transitions. Word has length 20 [2022-01-18 05:23:53,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:23:53,232 INFO L470 AbstractCegarLoop]: Abstraction has 535 states and 1613 transitions. [2022-01-18 05:23:53,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 28 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:23:53,232 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 1613 transitions. [2022-01-18 05:23:53,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:23:53,232 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:23:53,232 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:23:53,247 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (314)] Ended with exit code 0 [2022-01-18 05:23:53,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable503,314 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:23:53,433 INFO L402 AbstractCegarLoop]: === Iteration 505 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:23:53,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:23:53,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1943004467, now seen corresponding path program 114 times [2022-01-18 05:23:53,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:23:53,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398317930] [2022-01-18 05:23:53,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:23:53,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:23:53,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:23:53,941 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:23:53,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:23:53,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398317930] [2022-01-18 05:23:53,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398317930] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:23:53,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054117383] [2022-01-18 05:23:53,941 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 05:23:53,941 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:23:53,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:23:53,942 INFO L229 MonitoredProcess]: Starting monitored process 315 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:23:53,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (315)] Waiting until timeout for monitored process [2022-01-18 05:23:53,966 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 05:23:53,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:23:53,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 05:23:53,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:23:54,484 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:23:54,484 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 120 treesize of output 102 [2022-01-18 05:23:55,204 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 05:23:55,205 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 203 treesize of output 175 [2022-01-18 05:23:55,207 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 175 treesize of output 147 [2022-01-18 05:23:55,885 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:23:55,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:23:56,544 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:23:56,545 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 133 treesize of output 121 [2022-01-18 05:23:56,930 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:23:56,930 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 110 treesize of output 102 [2022-01-18 05:23:56,935 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:23:56,935 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 94 treesize of output 86 [2022-01-18 05:23:56,993 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:23:56,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054117383] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:23:56,993 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:23:56,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:23:56,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279313185] [2022-01-18 05:23:56,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:23:56,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:23:56,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:23:56,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:23:56,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:23:56,993 INFO L87 Difference]: Start difference. First operand 535 states and 1613 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:23:59,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:23:59,482 INFO L93 Difference]: Finished difference Result 815 states and 2320 transitions. [2022-01-18 05:23:59,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-18 05:23:59,482 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 05:23:59,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:23:59,484 INFO L225 Difference]: With dead ends: 815 [2022-01-18 05:23:59,484 INFO L226 Difference]: Without dead ends: 773 [2022-01-18 05:23:59,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=193, Invalid=1447, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 05:23:59,484 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 158 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 467 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 05:23:59,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 448 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 633 Invalid, 0 Unknown, 467 Unchecked, 0.4s Time] [2022-01-18 05:23:59,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2022-01-18 05:23:59,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 547. [2022-01-18 05:23:59,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 546 states have (on average 3.029304029304029) internal successors, (1654), 546 states have internal predecessors, (1654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:23:59,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 1654 transitions. [2022-01-18 05:23:59,491 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 1654 transitions. Word has length 20 [2022-01-18 05:23:59,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:23:59,491 INFO L470 AbstractCegarLoop]: Abstraction has 547 states and 1654 transitions. [2022-01-18 05:23:59,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:23:59,491 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 1654 transitions. [2022-01-18 05:23:59,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 05:23:59,492 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:23:59,492 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:23:59,507 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (315)] Ended with exit code 0 [2022-01-18 05:23:59,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 315 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable504 [2022-01-18 05:23:59,692 INFO L402 AbstractCegarLoop]: === Iteration 506 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:23:59,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:23:59,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1920407919, now seen corresponding path program 115 times [2022-01-18 05:23:59,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:23:59,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703097082] [2022-01-18 05:23:59,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:23:59,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:23:59,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:00,036 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:24:00,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:24:00,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703097082] [2022-01-18 05:24:00,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703097082] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:24:00,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107319750] [2022-01-18 05:24:00,037 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 05:24:00,037 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:00,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:24:00,037 INFO L229 MonitoredProcess]: Starting monitored process 316 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:24:00,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (316)] Waiting until timeout for monitored process [2022-01-18 05:24:00,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:00,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 33 conjunts are in the unsatisfiable core [2022-01-18 05:24:00,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:24:00,350 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-01-18 05:24:00,715 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 219 treesize of output 191 [2022-01-18 05:24:00,718 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 191 treesize of output 163 [2022-01-18 05:24:03,023 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:24:03,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:24:04,589 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:24:04,589 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 206 treesize of output 188 [2022-01-18 05:24:05,402 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:24:05,402 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 113 treesize of output 105 [2022-01-18 05:24:05,409 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 05:24:05,410 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 97 treesize of output 89 [2022-01-18 05:24:05,497 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:24:05,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107319750] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:24:05,497 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:24:05,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 05:24:05,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881165337] [2022-01-18 05:24:05,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:24:05,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 05:24:05,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:24:05,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 05:24:05,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=626, Unknown=0, NotChecked=0, Total=702 [2022-01-18 05:24:05,498 INFO L87 Difference]: Start difference. First operand 547 states and 1654 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2022-01-18 05:24:06,635 WARN L244 SmtUtils]: Removed 10 from assertion stack [2022-01-18 05:24:06,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 05:24:06,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=151, Invalid=1039, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 05:24:06,635 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 53 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 05:24:06,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 100 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 05:24:06,636 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (3 of 4 remaining) [2022-01-18 05:24:06,646 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (316)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-18 05:24:06,651 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (316)] Ended with exit code 0 [2022-01-18 05:24:06,656 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 [2022-01-18 05:24:06,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable505,316 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:06,837 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (547states) and FLOYD_HOARE automaton (currently 13 states, 27 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 74 for 21ms.. [2022-01-18 05:24:06,839 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-01-18 05:24:06,839 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-01-18 05:24:06,839 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-01-18 05:24:06,842 INFO L732 BasicCegarLoop]: Path program histogram: [115, 90, 90, 90, 90, 10, 6, 6, 4, 4, 1] [2022-01-18 05:24:06,844 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 05:24:06,844 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 05:24:06,852 INFO L202 PluginConnector]: Adding new model word-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 05:24:06 BasicIcfg [2022-01-18 05:24:06,852 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 05:24:06,852 INFO L158 Benchmark]: Toolchain (without parser) took 767672.23ms. Allocated memory was 398.5MB in the beginning and 629.1MB in the end (delta: 230.7MB). Free memory was 354.8MB in the beginning and 345.5MB in the end (delta: 9.3MB). Peak memory consumption was 242.9MB. Max. memory is 16.0GB. [2022-01-18 05:24:06,852 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.10ms. Allocated memory is still 398.5MB. Free memory is still 356.2MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 05:24:06,852 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.88ms. Allocated memory is still 398.5MB. Free memory was 354.8MB in the beginning and 353.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 05:24:06,853 INFO L158 Benchmark]: Boogie Preprocessor took 16.15ms. Allocated memory is still 398.5MB. Free memory was 353.3MB in the beginning and 352.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 05:24:06,853 INFO L158 Benchmark]: RCFGBuilder took 326.63ms. Allocated memory is still 398.5MB. Free memory was 352.1MB in the beginning and 339.4MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2022-01-18 05:24:06,853 INFO L158 Benchmark]: TraceAbstraction took 767296.88ms. Allocated memory was 398.5MB in the beginning and 629.1MB in the end (delta: 230.7MB). Free memory was 338.9MB in the beginning and 345.5MB in the end (delta: -6.6MB). Peak memory consumption was 226.1MB. Max. memory is 16.0GB. [2022-01-18 05:24:06,853 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 398.5MB. Free memory is still 356.2MB. There was no memory consumed. Max. memory is 16.0GB. * Boogie Procedure Inliner took 24.88ms. Allocated memory is still 398.5MB. Free memory was 354.8MB in the beginning and 353.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 16.15ms. Allocated memory is still 398.5MB. Free memory was 353.3MB in the beginning and 352.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 326.63ms. Allocated memory is still 398.5MB. Free memory was 352.1MB in the beginning and 339.4MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 767296.88ms. Allocated memory was 398.5MB in the beginning and 629.1MB in the end (delta: 230.7MB). Free memory was 338.9MB in the beginning and 345.5MB in the end (delta: -6.6MB). Peak memory consumption was 226.1MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 128]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while BasicCegarLoop was constructing difference of abstraction (547states) and FLOYD_HOARE automaton (currently 13 states, 27 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 74 for 21ms.. - TimeoutResultAtElement [Line: 122]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (547states) and FLOYD_HOARE automaton (currently 13 states, 27 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 74 for 21ms.. - TimeoutResultAtElement [Line: 121]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (547states) and FLOYD_HOARE automaton (currently 13 states, 27 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 74 for 21ms.. - TimeoutResultAtElement [Line: 118]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (547states) and FLOYD_HOARE automaton (currently 13 states, 27 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 74 for 21ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 38 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 767.2s, OverallIterations: 506, TraceHistogramMax: 1, PathProgramHistogramMax: 115, EmptinessCheckTime: 0.2s, AutomataDifference: 188.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 42797 SdHoareTripleChecker+Valid, 59.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 42797 mSDsluCounter, 68951 SdHoareTripleChecker+Invalid, 49.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 21577 IncrementalHoareTripleChecker+Unchecked, 122884 mSDsCounter, 3346 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 145306 IncrementalHoareTripleChecker+Invalid, 170229 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3346 mSolverCounterUnsat, 9405 mSDtfsCounter, 145306 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 18067 GetRequests, 9207 SyntacticMatches, 629 SemanticMatches, 8230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24660 ImplicationChecksByTransitivity, 232.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=547occurred in iteration=505, InterpolantAutomatonStates: 4506, 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, 505 MinimizatonAttempts, 88894 StatesRemovedByMinimization, 502 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.1s SsaConstructionTime, 3.1s SatisfiabilityAnalysisTime, 502.2s InterpolantComputationTime, 15392 NumberOfCodeBlocks, 15392 NumberOfCodeBlocksAsserted, 1049 NumberOfCheckSat, 20258 ConstructedInterpolants, 1224 QuantifiedInterpolants, 423183 SizeOfPredicates, 4146 NumberOfNonLiveVariables, 23131 ConjunctsInSsa, 4951 ConjunctsInUnsatCore, 1136 InterpolantComputations, 221 PerfectInterpolantSequences, 392/2105 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