/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-MCRwithDepranks-BasicCegarLoop.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/sum-array-hom.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-44898dd [2022-02-10 03:53:59,257 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-10 03:53:59,259 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-10 03:53:59,329 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-10 03:53:59,376 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-MCRwithDepranks-BasicCegarLoop.epf [2022-02-10 03:53:59,398 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-10 03:53:59,399 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-10 03:53:59,399 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-10 03:53:59,399 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-10 03:53:59,400 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-10 03:53:59,400 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-10 03:53:59,400 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-10 03:53:59,400 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-10 03:53:59,400 INFO L138 SettingsManager]: * Use SBE=true [2022-02-10 03:53:59,401 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-10 03:53:59,401 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-10 03:53:59,401 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-10 03:53:59,401 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-10 03:53:59,401 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-10 03:53:59,402 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-10 03:53:59,402 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-10 03:53:59,402 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-10 03:53:59,402 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-10 03:53:59,402 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-10 03:53:59,402 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-10 03:53:59,402 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-10 03:53:59,402 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-10 03:53:59,402 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-10 03:53:59,403 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-10 03:53:59,403 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-10 03:53:59,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 03:53:59,404 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-10 03:53:59,404 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-10 03:53:59,404 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-10 03:53:59,404 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-10 03:53:59,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-10 03:53:59,404 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-10 03:53:59,404 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-10 03:53:59,404 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITH_DEPRANKS [2022-02-10 03:53:59,405 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-10 03:53:59,604 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-10 03:53:59,624 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-10 03:53:59,625 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-10 03:53:59,626 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-02-10 03:53:59,627 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-02-10 03:53:59,627 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/sum-array-hom.wvr.bpl [2022-02-10 03:53:59,628 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/sum-array-hom.wvr.bpl' [2022-02-10 03:53:59,650 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-10 03:53:59,651 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-10 03:53:59,652 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-10 03:53:59,652 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-10 03:53:59,652 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-10 03:53:59,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "sum-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 03:53:59" (1/1) ... [2022-02-10 03:53:59,666 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "sum-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 03:53:59" (1/1) ... [2022-02-10 03:53:59,671 INFO L137 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-02-10 03:53:59,672 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-10 03:53:59,673 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-10 03:53:59,673 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-10 03:53:59,673 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-10 03:53:59,678 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "sum-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 03:53:59" (1/1) ... [2022-02-10 03:53:59,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "sum-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 03:53:59" (1/1) ... [2022-02-10 03:53:59,680 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "sum-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 03:53:59" (1/1) ... [2022-02-10 03:53:59,680 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "sum-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 03:53:59" (1/1) ... [2022-02-10 03:53:59,683 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "sum-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 03:53:59" (1/1) ... [2022-02-10 03:53:59,687 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "sum-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 03:53:59" (1/1) ... [2022-02-10 03:53:59,688 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "sum-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 03:53:59" (1/1) ... [2022-02-10 03:53:59,689 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-10 03:53:59,690 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-10 03:53:59,690 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-10 03:53:59,690 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-10 03:53:59,691 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "sum-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 03:53:59" (1/1) ... [2022-02-10 03:53:59,696 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 03:53:59,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:53:59,729 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) [2022-02-10 03:53:59,743 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 [2022-02-10 03:53:59,758 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-02-10 03:53:59,758 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-02-10 03:53:59,758 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-02-10 03:53:59,758 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-02-10 03:53:59,758 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-02-10 03:53:59,758 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-02-10 03:53:59,758 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-02-10 03:53:59,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-10 03:53:59,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-10 03:53:59,759 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2022-02-10 03:53:59,759 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-02-10 03:53:59,759 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-02-10 03:53:59,760 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-10 03:53:59,794 INFO L234 CfgBuilder]: Building ICFG [2022-02-10 03:53:59,795 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-10 03:53:59,878 INFO L275 CfgBuilder]: Performing block encoding [2022-02-10 03:53:59,889 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-10 03:53:59,889 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-10 03:53:59,890 INFO L202 PluginConnector]: Adding new model sum-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 03:53:59 BoogieIcfgContainer [2022-02-10 03:53:59,891 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-10 03:53:59,892 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-10 03:53:59,892 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-10 03:53:59,901 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-10 03:53:59,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sum-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 03:53:59" (1/2) ... [2022-02-10 03:53:59,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5969f53a and model type sum-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 03:53:59, skipping insertion in model container [2022-02-10 03:53:59,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sum-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 03:53:59" (2/2) ... [2022-02-10 03:53:59,917 INFO L111 eAbstractionObserver]: Analyzing ICFG sum-array-hom.wvr.bpl [2022-02-10 03:53:59,921 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-10 03:53:59,921 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-10 03:53:59,921 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-10 03:53:59,921 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-10 03:53:59,958 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-02-10 03:53:59,985 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-10 03:53:59,990 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-10 03:53:59,990 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-02-10 03:54:00,013 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 36 places, 29 transitions, 82 flow [2022-02-10 03:54:00,052 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 112 states, 111 states have (on average 2.810810810810811) internal successors, (312), 111 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:54:05,695 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 526838 transitions and produced 183322 states. [2022-02-10 03:54:06,462 INFO L276 IsEmpty]: Start isEmpty. Operand has 183322 states, 122589 states have (on average 2.0976759741901803) internal successors, (257152), 183321 states have internal predecessors, (257152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:54:06,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 03:54:06,943 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:54:06,943 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:54:06,944 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:54:06,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:54:06,952 INFO L85 PathProgramCache]: Analyzing trace with hash -234537446, now seen corresponding path program 1 times [2022-02-10 03:54:06,968 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:54:06,968 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434340762] [2022-02-10 03:54:06,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:54:06,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:54:07,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:54:07,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:54:07,113 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:54:07,113 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434340762] [2022-02-10 03:54:07,113 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434340762] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:54:07,113 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:54:07,114 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-10 03:54:07,115 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929392107] [2022-02-10 03:54:07,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:54:07,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 03:54:07,119 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:54:07,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 03:54:07,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-02-10 03:54:07,962 INFO L87 Difference]: Start difference. First operand has 183322 states, 122589 states have (on average 2.0976759741901803) internal successors, (257152), 183321 states have internal predecessors, (257152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:54:11,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:54:11,295 INFO L93 Difference]: Finished difference Result 179106 states and 252083 transitions. [2022-02-10 03:54:11,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 03:54:11,301 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have 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 [2022-02-10 03:54:11,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:54:11,817 INFO L225 Difference]: With dead ends: 179106 [2022-02-10 03:54:11,818 INFO L226 Difference]: Without dead ends: 55816 [2022-02-10 03:54:11,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-02-10 03:54:11,833 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 63 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 03:54:11,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 14 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 03:54:11,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55816 states. [2022-02-10 03:54:12,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55816 to 134. [2022-02-10 03:54:12,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 133 states have (on average 2.037593984962406) internal successors, (271), 133 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:54:12,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 271 transitions. [2022-02-10 03:54:12,837 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 271 transitions. Word has length 18 [2022-02-10 03:54:12,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:54:12,837 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 271 transitions. [2022-02-10 03:54:12,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:54:12,847 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 271 transitions. [2022-02-10 03:54:12,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:54:12,848 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:54:12,848 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:54:12,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-10 03:54:12,849 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:54:12,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:54:12,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1872873864, now seen corresponding path program 1 times [2022-02-10 03:54:12,853 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:54:12,853 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877221426] [2022-02-10 03:54:12,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:54:12,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:54:12,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:54:12,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:54:12,922 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:54:12,922 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877221426] [2022-02-10 03:54:12,922 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877221426] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:54:12,922 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:54:12,922 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-10 03:54:12,922 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507369972] [2022-02-10 03:54:12,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:54:12,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-10 03:54:12,923 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:54:12,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-10 03:54:12,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-10 03:54:12,924 INFO L87 Difference]: Start difference. First operand 134 states and 271 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:54:12,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:54:12,957 INFO L93 Difference]: Finished difference Result 145 states and 282 transitions. [2022-02-10 03:54:12,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-10 03:54:12,958 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-02-10 03:54:12,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:54:12,959 INFO L225 Difference]: With dead ends: 145 [2022-02-10 03:54:12,959 INFO L226 Difference]: Without dead ends: 145 [2022-02-10 03:54:12,959 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 [2022-02-10 03:54:12,960 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 32 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 03:54:12,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 15 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 03:54:12,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-02-10 03:54:12,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 143. [2022-02-10 03:54:12,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.971830985915493) internal successors, (280), 142 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:54:12,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 280 transitions. [2022-02-10 03:54:12,964 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 280 transitions. Word has length 20 [2022-02-10 03:54:12,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:54:12,965 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 280 transitions. [2022-02-10 03:54:12,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:54:12,965 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 280 transitions. [2022-02-10 03:54:12,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-10 03:54:12,966 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:54:12,966 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:54:12,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-10 03:54:12,966 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:54:12,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:54:12,967 INFO L85 PathProgramCache]: Analyzing trace with hash 196648534, now seen corresponding path program 1 times [2022-02-10 03:54:12,967 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:54:12,967 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529204466] [2022-02-10 03:54:12,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:54:12,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:54:12,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:54:13,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:54:13,278 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:54:13,281 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529204466] [2022-02-10 03:54:13,281 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529204466] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:54:13,282 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886826992] [2022-02-10 03:54:13,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:54:13,284 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:54:13,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:54:13,289 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) [2022-02-10 03:54:13,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-10 03:54:13,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:54:13,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-10 03:54:13,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:54:13,588 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:54:13,592 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-02-10 03:54:13,641 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:54:13,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:54:13,706 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:54:13,706 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 17 [2022-02-10 03:54:13,817 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:54:13,818 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886826992] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:54:13,818 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:54:13,818 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2022-02-10 03:54:13,818 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623670527] [2022-02-10 03:54:13,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:54:13,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-10 03:54:13,819 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:54:13,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-10 03:54:13,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-02-10 03:54:13,820 INFO L87 Difference]: Start difference. First operand 143 states and 280 transitions. Second operand has 18 states, 18 states have (on average 3.0) internal successors, (54), 17 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) [2022-02-10 03:54:14,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:54:14,039 INFO L93 Difference]: Finished difference Result 237 states and 443 transitions. [2022-02-10 03:54:14,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 03:54:14,040 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.0) internal successors, (54), 17 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 22 [2022-02-10 03:54:14,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:54:14,040 INFO L225 Difference]: With dead ends: 237 [2022-02-10 03:54:14,040 INFO L226 Difference]: Without dead ends: 232 [2022-02-10 03:54:14,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 30 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552 [2022-02-10 03:54:14,041 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 203 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 74 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:54:14,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 42 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 128 Invalid, 0 Unknown, 74 Unchecked, 0.1s Time] [2022-02-10 03:54:14,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-02-10 03:54:14,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 158. [2022-02-10 03:54:14,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 1.9426751592356688) internal successors, (305), 157 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:54:14,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 305 transitions. [2022-02-10 03:54:14,170 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 305 transitions. Word has length 22 [2022-02-10 03:54:14,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:54:14,170 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 305 transitions. [2022-02-10 03:54:14,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.0) internal successors, (54), 17 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) [2022-02-10 03:54:14,170 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 305 transitions. [2022-02-10 03:54:14,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-10 03:54:14,171 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:54:14,171 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:54:14,189 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-02-10 03:54:14,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:54:14,372 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:54:14,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:54:14,373 INFO L85 PathProgramCache]: Analyzing trace with hash 805974298, now seen corresponding path program 2 times [2022-02-10 03:54:14,373 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:54:14,373 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613923412] [2022-02-10 03:54:14,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:54:14,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:54:14,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:54:14,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:54:14,557 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:54:14,557 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613923412] [2022-02-10 03:54:14,557 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613923412] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:54:14,557 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465310395] [2022-02-10 03:54:14,557 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:54:14,557 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:54:14,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:54:14,559 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) [2022-02-10 03:54:14,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-10 03:54:14,594 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:54:14,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:54:14,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-10 03:54:14,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:54:14,830 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:54:14,831 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-02-10 03:54:14,930 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:54:14,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:54:15,002 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:54:15,002 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 12 treesize of output 17 [2022-02-10 03:54:15,100 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:54:15,100 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465310395] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:54:15,100 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:54:15,100 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 18 [2022-02-10 03:54:15,100 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797721589] [2022-02-10 03:54:15,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:54:15,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 03:54:15,101 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:54:15,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 03:54:15,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2022-02-10 03:54:15,101 INFO L87 Difference]: Start difference. First operand 158 states and 305 transitions. Second operand has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 18 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:54:15,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:54:15,580 INFO L93 Difference]: Finished difference Result 266 states and 502 transitions. [2022-02-10 03:54:15,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-10 03:54:15,580 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 18 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-02-10 03:54:15,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:54:15,581 INFO L225 Difference]: With dead ends: 266 [2022-02-10 03:54:15,582 INFO L226 Difference]: Without dead ends: 260 [2022-02-10 03:54:15,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=207, Invalid=663, Unknown=0, NotChecked=0, Total=870 [2022-02-10 03:54:15,583 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 149 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 59 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:54:15,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 70 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 321 Invalid, 0 Unknown, 59 Unchecked, 0.2s Time] [2022-02-10 03:54:15,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-02-10 03:54:15,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 159. [2022-02-10 03:54:15,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 158 states have (on average 1.9430379746835442) internal successors, (307), 158 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:54:15,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 307 transitions. [2022-02-10 03:54:15,588 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 307 transitions. Word has length 22 [2022-02-10 03:54:15,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:54:15,588 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 307 transitions. [2022-02-10 03:54:15,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 18 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:54:15,588 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 307 transitions. [2022-02-10 03:54:15,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-10 03:54:15,589 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:54:15,589 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:54:15,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-10 03:54:15,796 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,SelfDestructingSolverStorable3 [2022-02-10 03:54:15,796 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:54:15,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:54:15,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1394777570, now seen corresponding path program 3 times [2022-02-10 03:54:15,797 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:54:15,797 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114636856] [2022-02-10 03:54:15,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:54:15,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:54:15,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:54:15,935 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:54:15,935 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:54:15,935 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114636856] [2022-02-10 03:54:15,935 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114636856] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:54:15,935 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983596063] [2022-02-10 03:54:15,935 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:54:15,936 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:54:15,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:54:15,940 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) [2022-02-10 03:54:15,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-10 03:54:15,967 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-10 03:54:15,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:54:15,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 18 conjunts are in the unsatisfiable core [2022-02-10 03:54:15,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:54:16,181 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-02-10 03:54:16,255 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:54:16,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:54:16,292 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:54:16,292 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 17 [2022-02-10 03:54:16,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:54:16,425 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983596063] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:54:16,425 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:54:16,425 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-02-10 03:54:16,425 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928272625] [2022-02-10 03:54:16,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:54:16,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-10 03:54:16,426 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:54:16,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-10 03:54:16,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2022-02-10 03:54:16,426 INFO L87 Difference]: Start difference. First operand 159 states and 307 transitions. Second operand has 16 states, 16 states have (on average 3.125) internal successors, (50), 15 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:54:16,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:54:16,596 INFO L93 Difference]: Finished difference Result 232 states and 426 transitions. [2022-02-10 03:54:16,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-10 03:54:16,596 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 15 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-02-10 03:54:16,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:54:16,598 INFO L225 Difference]: With dead ends: 232 [2022-02-10 03:54:16,598 INFO L226 Difference]: Without dead ends: 226 [2022-02-10 03:54:16,598 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-02-10 03:54:16,599 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 91 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 86 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:54:16,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 88 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 120 Invalid, 0 Unknown, 86 Unchecked, 0.1s Time] [2022-02-10 03:54:16,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2022-02-10 03:54:16,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 168. [2022-02-10 03:54:16,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 167 states have (on average 1.9221556886227544) internal successors, (321), 167 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:54:16,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 321 transitions. [2022-02-10 03:54:16,619 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 321 transitions. Word has length 22 [2022-02-10 03:54:16,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:54:16,619 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 321 transitions. [2022-02-10 03:54:16,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 15 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:54:16,619 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 321 transitions. [2022-02-10 03:54:16,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-10 03:54:16,620 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:54:16,620 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:54:16,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-02-10 03:54:16,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:54:16,821 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:54:16,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:54:16,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1778530228, now seen corresponding path program 4 times [2022-02-10 03:54:16,821 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:54:16,821 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068786295] [2022-02-10 03:54:16,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:54:16,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:54:16,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:54:16,868 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:54:16,868 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:54:16,868 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068786295] [2022-02-10 03:54:16,868 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068786295] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:54:16,868 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075169931] [2022-02-10 03:54:16,868 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:54:16,869 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:54:16,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:54:16,870 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) [2022-02-10 03:54:16,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-10 03:54:16,895 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:54:16,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:54:16,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-10 03:54:16,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:54:16,990 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:54:16,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:54:17,101 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:54:17,101 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075169931] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:54:17,101 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:54:17,101 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2022-02-10 03:54:17,101 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743060750] [2022-02-10 03:54:17,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:54:17,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-10 03:54:17,102 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:54:17,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-10 03:54:17,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-02-10 03:54:17,103 INFO L87 Difference]: Start difference. First operand 168 states and 321 transitions. Second operand has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:54:17,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:54:17,797 INFO L93 Difference]: Finished difference Result 507 states and 929 transitions. [2022-02-10 03:54:17,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-10 03:54:17,798 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-02-10 03:54:17,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:54:17,799 INFO L225 Difference]: With dead ends: 507 [2022-02-10 03:54:17,799 INFO L226 Difference]: Without dead ends: 507 [2022-02-10 03:54:17,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 570 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=492, Invalid=1488, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 03:54:17,800 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 199 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:54:17,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 193 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 03:54:17,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2022-02-10 03:54:17,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 202. [2022-02-10 03:54:17,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 201 states have (on average 1.9751243781094527) internal successors, (397), 201 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:54:17,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 397 transitions. [2022-02-10 03:54:17,805 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 397 transitions. Word has length 24 [2022-02-10 03:54:17,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:54:17,805 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 397 transitions. [2022-02-10 03:54:17,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:54:17,805 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 397 transitions. [2022-02-10 03:54:17,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-10 03:54:17,806 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:54:17,806 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:54:17,825 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-02-10 03:54:18,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:54:18,022 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:54:18,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:54:18,023 INFO L85 PathProgramCache]: Analyzing trace with hash -2007404748, now seen corresponding path program 1 times [2022-02-10 03:54:18,023 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:54:18,023 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716128078] [2022-02-10 03:54:18,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:54:18,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:54:18,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:54:18,055 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:54:18,055 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:54:18,055 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716128078] [2022-02-10 03:54:18,055 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716128078] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:54:18,055 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367372908] [2022-02-10 03:54:18,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:54:18,056 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:54:18,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:54:18,057 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) [2022-02-10 03:54:18,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-10 03:54:18,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:54:18,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core [2022-02-10 03:54:18,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:54:18,140 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:54:18,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:54:18,223 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:54:18,223 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367372908] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:54:18,223 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:54:18,223 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2022-02-10 03:54:18,223 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785021405] [2022-02-10 03:54:18,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:54:18,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-10 03:54:18,226 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:54:18,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-10 03:54:18,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-02-10 03:54:18,227 INFO L87 Difference]: Start difference. First operand 202 states and 397 transitions. Second operand has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 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) [2022-02-10 03:54:18,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:54:18,370 INFO L93 Difference]: Finished difference Result 454 states and 874 transitions. [2022-02-10 03:54:18,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-10 03:54:18,370 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 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 24 [2022-02-10 03:54:18,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:54:18,371 INFO L225 Difference]: With dead ends: 454 [2022-02-10 03:54:18,371 INFO L226 Difference]: Without dead ends: 454 [2022-02-10 03:54:18,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=143, Unknown=0, NotChecked=0, Total=240 [2022-02-10 03:54:18,372 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 107 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:54:18,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 36 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:54:18,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2022-02-10 03:54:18,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 316. [2022-02-10 03:54:18,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 315 states have (on average 2.123809523809524) internal successors, (669), 315 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:54:18,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 669 transitions. [2022-02-10 03:54:18,377 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 669 transitions. Word has length 24 [2022-02-10 03:54:18,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:54:18,377 INFO L470 AbstractCegarLoop]: Abstraction has 316 states and 669 transitions. [2022-02-10 03:54:18,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 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) [2022-02-10 03:54:18,377 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 669 transitions. [2022-02-10 03:54:18,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-10 03:54:18,378 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:54:18,378 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:54:18,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-02-10 03:54:18,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:54:18,599 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:54:18,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:54:18,599 INFO L85 PathProgramCache]: Analyzing trace with hash 437814964, now seen corresponding path program 5 times [2022-02-10 03:54:18,599 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:54:18,599 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276984165] [2022-02-10 03:54:18,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:54:18,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:54:18,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:54:18,636 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:54:18,636 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:54:18,636 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276984165] [2022-02-10 03:54:18,636 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276984165] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:54:18,636 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703612891] [2022-02-10 03:54:18,637 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 03:54:18,637 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:54:18,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:54:18,638 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) [2022-02-10 03:54:18,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-02-10 03:54:18,660 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 03:54:18,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:54:18,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-10 03:54:18,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:54:18,756 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:54:18,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:54:18,812 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:54:18,813 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703612891] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:54:18,813 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:54:18,813 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-02-10 03:54:18,813 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993497112] [2022-02-10 03:54:18,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:54:18,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-10 03:54:18,813 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:54:18,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-10 03:54:18,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-02-10 03:54:18,814 INFO L87 Difference]: Start difference. First operand 316 states and 669 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:54:19,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:54:19,111 INFO L93 Difference]: Finished difference Result 798 states and 1650 transitions. [2022-02-10 03:54:19,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-10 03:54:19,112 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-02-10 03:54:19,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:54:19,114 INFO L225 Difference]: With dead ends: 798 [2022-02-10 03:54:19,114 INFO L226 Difference]: Without dead ends: 791 [2022-02-10 03:54:19,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=240, Invalid=690, Unknown=0, NotChecked=0, Total=930 [2022-02-10 03:54:19,115 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 244 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:54:19,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [244 Valid, 115 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:54:19,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2022-02-10 03:54:19,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 541. [2022-02-10 03:54:19,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 540 states have (on average 2.224074074074074) internal successors, (1201), 540 states have internal predecessors, (1201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:54:19,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 1201 transitions. [2022-02-10 03:54:19,123 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 1201 transitions. Word has length 24 [2022-02-10 03:54:19,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:54:19,123 INFO L470 AbstractCegarLoop]: Abstraction has 541 states and 1201 transitions. [2022-02-10 03:54:19,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:54:19,123 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 1201 transitions. [2022-02-10 03:54:19,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-10 03:54:19,124 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:54:19,124 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:54:19,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-02-10 03:54:19,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:54:19,331 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:54:19,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:54:19,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1364786488, now seen corresponding path program 2 times [2022-02-10 03:54:19,332 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:54:19,332 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104366915] [2022-02-10 03:54:19,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:54:19,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:54:19,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:54:19,371 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:54:19,371 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:54:19,371 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104366915] [2022-02-10 03:54:19,371 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104366915] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:54:19,371 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008378372] [2022-02-10 03:54:19,371 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:54:19,372 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:54:19,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:54:19,373 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) [2022-02-10 03:54:19,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-02-10 03:54:19,396 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:54:19,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:54:19,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core [2022-02-10 03:54:19,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:54:19,458 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:54:19,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:54:19,534 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:54:19,534 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008378372] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:54:19,534 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:54:19,534 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2022-02-10 03:54:19,536 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142892453] [2022-02-10 03:54:19,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:54:19,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-10 03:54:19,537 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:54:19,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-10 03:54:19,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-02-10 03:54:19,537 INFO L87 Difference]: Start difference. First operand 541 states and 1201 transitions. Second operand has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 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) [2022-02-10 03:54:19,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:54:19,724 INFO L93 Difference]: Finished difference Result 920 states and 1841 transitions. [2022-02-10 03:54:19,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-10 03:54:19,724 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 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 24 [2022-02-10 03:54:19,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:54:19,726 INFO L225 Difference]: With dead ends: 920 [2022-02-10 03:54:19,726 INFO L226 Difference]: Without dead ends: 920 [2022-02-10 03:54:19,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=146, Invalid=234, Unknown=0, NotChecked=0, Total=380 [2022-02-10 03:54:19,727 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 136 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:54:19,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 71 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:54:19,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2022-02-10 03:54:19,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 579. [2022-02-10 03:54:19,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 578 states have (on average 2.1747404844290656) internal successors, (1257), 578 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) [2022-02-10 03:54:19,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 1257 transitions. [2022-02-10 03:54:19,736 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 1257 transitions. Word has length 24 [2022-02-10 03:54:19,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:54:19,736 INFO L470 AbstractCegarLoop]: Abstraction has 579 states and 1257 transitions. [2022-02-10 03:54:19,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 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) [2022-02-10 03:54:19,736 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 1257 transitions. [2022-02-10 03:54:19,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-10 03:54:19,737 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:54:19,737 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:54:19,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-02-10 03:54:19,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:54:19,956 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:54:19,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:54:19,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1520202116, now seen corresponding path program 6 times [2022-02-10 03:54:19,956 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:54:19,956 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674475670] [2022-02-10 03:54:19,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:54:19,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:54:19,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:54:19,999 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:54:19,999 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:54:19,999 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674475670] [2022-02-10 03:54:20,000 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674475670] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:54:20,000 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135406717] [2022-02-10 03:54:20,000 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 03:54:20,000 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:54:20,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:54:20,001 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) [2022-02-10 03:54:20,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-02-10 03:54:20,032 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-10 03:54:20,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:54:20,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-10 03:54:20,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:54:20,091 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:54:20,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:54:20,153 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:54:20,153 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135406717] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:54:20,153 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:54:20,153 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2022-02-10 03:54:20,153 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506474793] [2022-02-10 03:54:20,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:54:20,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-10 03:54:20,154 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:54:20,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-10 03:54:20,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-02-10 03:54:20,154 INFO L87 Difference]: Start difference. First operand 579 states and 1257 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 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) [2022-02-10 03:54:20,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:54:20,561 INFO L93 Difference]: Finished difference Result 1166 states and 2392 transitions. [2022-02-10 03:54:20,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-10 03:54:20,561 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 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 24 [2022-02-10 03:54:20,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:54:20,563 INFO L225 Difference]: With dead ends: 1166 [2022-02-10 03:54:20,563 INFO L226 Difference]: Without dead ends: 1166 [2022-02-10 03:54:20,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=364, Invalid=1042, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 03:54:20,564 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 161 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:54:20,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 112 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 03:54:20,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2022-02-10 03:54:20,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 584. [2022-02-10 03:54:20,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 583 states have (on average 2.171526586620926) internal successors, (1266), 583 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:54:20,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 1266 transitions. [2022-02-10 03:54:20,576 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 1266 transitions. Word has length 24 [2022-02-10 03:54:20,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:54:20,576 INFO L470 AbstractCegarLoop]: Abstraction has 584 states and 1266 transitions. [2022-02-10 03:54:20,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 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) [2022-02-10 03:54:20,576 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 1266 transitions. [2022-02-10 03:54:20,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-10 03:54:20,578 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:54:20,578 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:54:20,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-02-10 03:54:20,787 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,SelfDestructingSolverStorable9 [2022-02-10 03:54:20,788 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:54:20,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:54:20,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1873818808, now seen corresponding path program 7 times [2022-02-10 03:54:20,788 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:54:20,789 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221336679] [2022-02-10 03:54:20,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:54:20,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:54:20,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:54:20,827 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:54:20,828 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:54:20,828 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221336679] [2022-02-10 03:54:20,828 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221336679] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:54:20,828 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626080459] [2022-02-10 03:54:20,828 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 03:54:20,828 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:54:20,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:54:20,829 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) [2022-02-10 03:54:20,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-02-10 03:54:20,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:54:20,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-10 03:54:20,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:54:20,941 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:54:20,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:54:20,986 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:54:20,987 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626080459] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:54:20,987 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:54:20,987 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2022-02-10 03:54:20,987 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819274968] [2022-02-10 03:54:20,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:54:20,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-10 03:54:20,987 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:54:20,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-10 03:54:20,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-02-10 03:54:20,988 INFO L87 Difference]: Start difference. First operand 584 states and 1266 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:54:21,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:54:21,274 INFO L93 Difference]: Finished difference Result 1141 states and 2328 transitions. [2022-02-10 03:54:21,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-10 03:54:21,274 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-02-10 03:54:21,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:54:21,276 INFO L225 Difference]: With dead ends: 1141 [2022-02-10 03:54:21,277 INFO L226 Difference]: Without dead ends: 1141 [2022-02-10 03:54:21,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=219, Invalid=537, Unknown=0, NotChecked=0, Total=756 [2022-02-10 03:54:21,277 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 205 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:54:21,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 117 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 03:54:21,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1141 states. [2022-02-10 03:54:21,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1141 to 821. [2022-02-10 03:54:21,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 820 states have (on average 2.2621951219512195) internal successors, (1855), 820 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:54:21,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1855 transitions. [2022-02-10 03:54:21,339 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1855 transitions. Word has length 24 [2022-02-10 03:54:21,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:54:21,339 INFO L470 AbstractCegarLoop]: Abstraction has 821 states and 1855 transitions. [2022-02-10 03:54:21,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:54:21,340 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1855 transitions. [2022-02-10 03:54:21,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-10 03:54:21,342 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:54:21,342 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:54:21,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-02-10 03:54:21,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:54:21,559 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:54:21,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:54:21,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1749610500, now seen corresponding path program 8 times [2022-02-10 03:54:21,560 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:54:21,560 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559472468] [2022-02-10 03:54:21,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:54:21,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:54:21,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:54:21,605 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:54:21,605 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:54:21,606 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559472468] [2022-02-10 03:54:21,606 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559472468] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:54:21,606 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13021132] [2022-02-10 03:54:21,606 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:54:21,606 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:54:21,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:54:21,607 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) [2022-02-10 03:54:21,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-02-10 03:54:21,628 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:54:21,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:54:21,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-10 03:54:21,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:54:21,709 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:54:21,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:54:21,786 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:54:21,787 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13021132] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:54:21,787 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:54:21,787 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2022-02-10 03:54:21,787 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640755602] [2022-02-10 03:54:21,787 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:54:21,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-10 03:54:21,788 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:54:21,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-10 03:54:21,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-02-10 03:54:21,789 INFO L87 Difference]: Start difference. First operand 821 states and 1855 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 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) [2022-02-10 03:54:22,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:54:22,198 INFO L93 Difference]: Finished difference Result 1523 states and 3273 transitions. [2022-02-10 03:54:22,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-10 03:54:22,203 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 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 24 [2022-02-10 03:54:22,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:54:22,206 INFO L225 Difference]: With dead ends: 1523 [2022-02-10 03:54:22,206 INFO L226 Difference]: Without dead ends: 1522 [2022-02-10 03:54:22,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=363, Invalid=1197, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 03:54:22,207 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 168 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:54:22,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 131 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 03:54:22,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1522 states. [2022-02-10 03:54:22,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1522 to 854. [2022-02-10 03:54:22,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 853 states have (on average 2.246189917936694) internal successors, (1916), 853 states have internal predecessors, (1916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:54:22,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1916 transitions. [2022-02-10 03:54:22,224 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1916 transitions. Word has length 24 [2022-02-10 03:54:22,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:54:22,224 INFO L470 AbstractCegarLoop]: Abstraction has 854 states and 1916 transitions. [2022-02-10 03:54:22,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 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) [2022-02-10 03:54:22,224 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1916 transitions. [2022-02-10 03:54:22,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-10 03:54:22,225 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:54:22,226 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:54:22,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-02-10 03:54:22,439 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,SelfDestructingSolverStorable11 [2022-02-10 03:54:22,439 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:54:22,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:54:22,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1212838136, now seen corresponding path program 3 times [2022-02-10 03:54:22,440 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:54:22,440 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410448572] [2022-02-10 03:54:22,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:54:22,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:54:22,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:54:22,478 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:54:22,478 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:54:22,479 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410448572] [2022-02-10 03:54:22,479 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410448572] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:54:22,479 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661595600] [2022-02-10 03:54:22,479 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:54:22,479 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:54:22,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:54:22,480 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) [2022-02-10 03:54:22,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-02-10 03:54:22,503 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-10 03:54:22,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:54:22,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core [2022-02-10 03:54:22,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:54:22,562 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:54:22,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:54:22,628 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:54:22,629 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661595600] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:54:22,629 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:54:22,629 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 9 [2022-02-10 03:54:22,629 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808703595] [2022-02-10 03:54:22,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:54:22,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-10 03:54:22,629 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:54:22,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-10 03:54:22,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-02-10 03:54:22,630 INFO L87 Difference]: Start difference. First operand 854 states and 1916 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 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) [2022-02-10 03:54:22,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:54:22,748 INFO L93 Difference]: Finished difference Result 1018 states and 2194 transitions. [2022-02-10 03:54:22,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-10 03:54:22,749 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 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 24 [2022-02-10 03:54:22,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:54:22,751 INFO L225 Difference]: With dead ends: 1018 [2022-02-10 03:54:22,751 INFO L226 Difference]: Without dead ends: 1018 [2022-02-10 03:54:22,751 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2022-02-10 03:54:22,751 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 94 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:54:22,751 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 42 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:54:22,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1018 states. [2022-02-10 03:54:22,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1018 to 835. [2022-02-10 03:54:22,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 835 states, 834 states have (on average 2.2553956834532376) internal successors, (1881), 834 states have internal predecessors, (1881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:54:22,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 1881 transitions. [2022-02-10 03:54:22,763 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 1881 transitions. Word has length 24 [2022-02-10 03:54:22,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:54:22,763 INFO L470 AbstractCegarLoop]: Abstraction has 835 states and 1881 transitions. [2022-02-10 03:54:22,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 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) [2022-02-10 03:54:22,764 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 1881 transitions. [2022-02-10 03:54:22,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-10 03:54:22,765 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:54:22,765 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:54:22,782 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-02-10 03:54:22,982 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,SelfDestructingSolverStorable12 [2022-02-10 03:54:22,982 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:54:22,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:54:22,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1763307140, now seen corresponding path program 9 times [2022-02-10 03:54:22,983 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:54:22,983 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115152161] [2022-02-10 03:54:22,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:54:22,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:54:22,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:54:23,020 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:54:23,021 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:54:23,021 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115152161] [2022-02-10 03:54:23,021 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115152161] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:54:23,021 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68425707] [2022-02-10 03:54:23,021 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:54:23,021 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:54:23,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:54:23,022 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) [2022-02-10 03:54:23,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-02-10 03:54:23,043 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 03:54:23,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:54:23,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-10 03:54:23,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:54:23,105 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:54:23,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:54:23,177 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:54:23,177 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68425707] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:54:23,177 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:54:23,177 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-02-10 03:54:23,177 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283329314] [2022-02-10 03:54:23,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:54:23,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-10 03:54:23,180 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:54:23,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-10 03:54:23,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-02-10 03:54:23,181 INFO L87 Difference]: Start difference. First operand 835 states and 1881 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 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) [2022-02-10 03:54:23,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:54:23,458 INFO L93 Difference]: Finished difference Result 1257 states and 2700 transitions. [2022-02-10 03:54:23,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-10 03:54:23,459 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 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 24 [2022-02-10 03:54:23,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:54:23,461 INFO L225 Difference]: With dead ends: 1257 [2022-02-10 03:54:23,461 INFO L226 Difference]: Without dead ends: 1257 [2022-02-10 03:54:23,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=213, Invalid=599, Unknown=0, NotChecked=0, Total=812 [2022-02-10 03:54:23,462 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 161 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:54:23,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 98 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:54:23,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1257 states. [2022-02-10 03:54:23,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1257 to 891. [2022-02-10 03:54:23,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 891 states, 890 states have (on average 2.251685393258427) internal successors, (2004), 890 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:54:23,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 2004 transitions. [2022-02-10 03:54:23,479 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 2004 transitions. Word has length 24 [2022-02-10 03:54:23,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:54:23,479 INFO L470 AbstractCegarLoop]: Abstraction has 891 states and 2004 transitions. [2022-02-10 03:54:23,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 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) [2022-02-10 03:54:23,479 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 2004 transitions. [2022-02-10 03:54:23,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-10 03:54:23,480 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:54:23,480 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:54:23,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-02-10 03:54:23,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-02-10 03:54:23,695 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:54:23,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:54:23,696 INFO L85 PathProgramCache]: Analyzing trace with hash 85686396, now seen corresponding path program 10 times [2022-02-10 03:54:23,696 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:54:23,696 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234099406] [2022-02-10 03:54:23,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:54:23,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:54:23,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:54:23,731 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:54:23,732 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:54:23,732 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234099406] [2022-02-10 03:54:23,732 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234099406] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:54:23,732 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111901480] [2022-02-10 03:54:23,732 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:54:23,732 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:54:23,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:54:23,733 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) [2022-02-10 03:54:23,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-02-10 03:54:23,755 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:54:23,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:54:23,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-10 03:54:23,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:54:23,844 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:54:23,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:54:23,896 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:54:23,897 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111901480] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:54:23,897 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:54:23,897 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 14 [2022-02-10 03:54:23,897 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294167312] [2022-02-10 03:54:23,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:54:23,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-10 03:54:23,897 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:54:23,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-10 03:54:23,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-02-10 03:54:23,898 INFO L87 Difference]: Start difference. First operand 891 states and 2004 transitions. Second operand has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 14 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:54:24,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:54:24,130 INFO L93 Difference]: Finished difference Result 1151 states and 2521 transitions. [2022-02-10 03:54:24,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-10 03:54:24,130 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 14 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-02-10 03:54:24,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:54:24,132 INFO L225 Difference]: With dead ends: 1151 [2022-02-10 03:54:24,132 INFO L226 Difference]: Without dead ends: 1149 [2022-02-10 03:54:24,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=184, Invalid=572, Unknown=0, NotChecked=0, Total=756 [2022-02-10 03:54:24,133 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 133 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:54:24,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 102 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:54:24,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1149 states. [2022-02-10 03:54:24,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1149 to 1019. [2022-02-10 03:54:24,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1019 states, 1018 states have (on average 2.2858546168958744) internal successors, (2327), 1018 states have internal predecessors, (2327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:54:24,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019 states to 1019 states and 2327 transitions. [2022-02-10 03:54:24,150 INFO L78 Accepts]: Start accepts. Automaton has 1019 states and 2327 transitions. Word has length 24 [2022-02-10 03:54:24,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:54:24,150 INFO L470 AbstractCegarLoop]: Abstraction has 1019 states and 2327 transitions. [2022-02-10 03:54:24,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 14 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:54:24,150 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 2327 transitions. [2022-02-10 03:54:24,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-10 03:54:24,152 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:54:24,152 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:54:24,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-02-10 03:54:24,367 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,SelfDestructingSolverStorable14 [2022-02-10 03:54:24,367 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:54:24,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:54:24,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1903831492, now seen corresponding path program 11 times [2022-02-10 03:54:24,368 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:54:24,368 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549761452] [2022-02-10 03:54:24,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:54:24,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:54:24,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:54:24,404 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:54:24,405 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:54:24,405 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549761452] [2022-02-10 03:54:24,405 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549761452] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:54:24,405 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583192739] [2022-02-10 03:54:24,405 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 03:54:24,405 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:54:24,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:54:24,406 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) [2022-02-10 03:54:24,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-02-10 03:54:24,428 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 03:54:24,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:54:24,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-10 03:54:24,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:54:24,477 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:54:24,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:54:24,555 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:54:24,555 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583192739] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:54:24,555 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:54:24,555 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-02-10 03:54:24,555 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34864857] [2022-02-10 03:54:24,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:54:24,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-10 03:54:24,556 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:54:24,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-10 03:54:24,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-02-10 03:54:24,556 INFO L87 Difference]: Start difference. First operand 1019 states and 2327 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 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) [2022-02-10 03:54:24,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:54:24,797 INFO L93 Difference]: Finished difference Result 1424 states and 3124 transitions. [2022-02-10 03:54:24,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-10 03:54:24,797 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 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 24 [2022-02-10 03:54:24,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:54:24,799 INFO L225 Difference]: With dead ends: 1424 [2022-02-10 03:54:24,799 INFO L226 Difference]: Without dead ends: 1423 [2022-02-10 03:54:24,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=143, Invalid=409, Unknown=0, NotChecked=0, Total=552 [2022-02-10 03:54:24,800 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 129 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:54:24,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 95 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 03:54:24,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1423 states. [2022-02-10 03:54:24,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1423 to 1019. [2022-02-10 03:54:24,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1019 states, 1018 states have (on average 2.2848722986247543) internal successors, (2326), 1018 states have internal predecessors, (2326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:54:24,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019 states to 1019 states and 2326 transitions. [2022-02-10 03:54:24,814 INFO L78 Accepts]: Start accepts. Automaton has 1019 states and 2326 transitions. Word has length 24 [2022-02-10 03:54:24,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:54:24,815 INFO L470 AbstractCegarLoop]: Abstraction has 1019 states and 2326 transitions. [2022-02-10 03:54:24,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 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) [2022-02-10 03:54:24,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 2326 transitions. [2022-02-10 03:54:24,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-10 03:54:24,816 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:54:24,816 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:54:24,834 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-02-10 03:54:25,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:54:25,031 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:54:25,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:54:25,032 INFO L85 PathProgramCache]: Analyzing trace with hash -369242560, now seen corresponding path program 12 times [2022-02-10 03:54:25,032 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:54:25,032 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517061948] [2022-02-10 03:54:25,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:54:25,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:54:25,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:54:25,068 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:54:25,068 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:54:25,068 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517061948] [2022-02-10 03:54:25,068 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517061948] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:54:25,068 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685156263] [2022-02-10 03:54:25,068 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 03:54:25,068 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:54:25,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:54:25,070 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) [2022-02-10 03:54:25,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-02-10 03:54:25,093 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 03:54:25,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:54:25,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-10 03:54:25,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:54:25,141 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:54:25,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:54:25,185 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:54:25,185 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685156263] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:54:25,186 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:54:25,186 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 11 [2022-02-10 03:54:25,186 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440483522] [2022-02-10 03:54:25,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:54:25,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-10 03:54:25,187 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:54:25,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-10 03:54:25,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-02-10 03:54:25,188 INFO L87 Difference]: Start difference. First operand 1019 states and 2326 transitions. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 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) [2022-02-10 03:54:25,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:54:25,471 INFO L93 Difference]: Finished difference Result 1430 states and 3155 transitions. [2022-02-10 03:54:25,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-10 03:54:25,471 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 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 24 [2022-02-10 03:54:25,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:54:25,474 INFO L225 Difference]: With dead ends: 1430 [2022-02-10 03:54:25,474 INFO L226 Difference]: Without dead ends: 1430 [2022-02-10 03:54:25,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=211, Invalid=545, Unknown=0, NotChecked=0, Total=756 [2022-02-10 03:54:25,475 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 104 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:54:25,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 120 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:54:25,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1430 states. [2022-02-10 03:54:25,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1430 to 1042. [2022-02-10 03:54:25,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1042 states, 1041 states have (on average 2.2804995196926034) internal successors, (2374), 1041 states have internal predecessors, (2374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:54:25,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1042 states to 1042 states and 2374 transitions. [2022-02-10 03:54:25,491 INFO L78 Accepts]: Start accepts. Automaton has 1042 states and 2374 transitions. Word has length 24 [2022-02-10 03:54:25,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:54:25,491 INFO L470 AbstractCegarLoop]: Abstraction has 1042 states and 2374 transitions. [2022-02-10 03:54:25,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 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) [2022-02-10 03:54:25,491 INFO L276 IsEmpty]: Start isEmpty. Operand 1042 states and 2374 transitions. [2022-02-10 03:54:25,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-10 03:54:25,492 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:54:25,492 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:54:25,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-02-10 03:54:25,699 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,SelfDestructingSolverStorable16 [2022-02-10 03:54:25,699 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:54:25,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:54:25,700 INFO L85 PathProgramCache]: Analyzing trace with hash -715193216, now seen corresponding path program 13 times [2022-02-10 03:54:25,700 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:54:25,700 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214486076] [2022-02-10 03:54:25,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:54:25,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:54:25,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:54:25,746 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:54:25,746 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:54:25,746 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214486076] [2022-02-10 03:54:25,746 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214486076] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:54:25,746 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878326776] [2022-02-10 03:54:25,746 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 03:54:25,746 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:54:25,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:54:25,747 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) [2022-02-10 03:54:25,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-02-10 03:54:25,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:54:25,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-10 03:54:25,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:54:25,822 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:54:25,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:54:25,878 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:54:25,878 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878326776] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:54:25,878 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:54:25,878 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2022-02-10 03:54:25,878 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545259794] [2022-02-10 03:54:25,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:54:25,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-10 03:54:25,879 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:54:25,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-10 03:54:25,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-02-10 03:54:25,879 INFO L87 Difference]: Start difference. First operand 1042 states and 2374 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 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) [2022-02-10 03:54:26,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:54:26,113 INFO L93 Difference]: Finished difference Result 1445 states and 3168 transitions. [2022-02-10 03:54:26,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-10 03:54:26,113 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 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 24 [2022-02-10 03:54:26,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:54:26,115 INFO L225 Difference]: With dead ends: 1445 [2022-02-10 03:54:26,115 INFO L226 Difference]: Without dead ends: 1442 [2022-02-10 03:54:26,116 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=163, Invalid=487, Unknown=0, NotChecked=0, Total=650 [2022-02-10 03:54:26,116 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 156 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:54:26,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 95 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:54:26,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1442 states. [2022-02-10 03:54:26,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1442 to 1045. [2022-02-10 03:54:26,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1045 states, 1044 states have (on average 2.2768199233716473) internal successors, (2377), 1044 states have internal predecessors, (2377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:54:26,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1045 states to 1045 states and 2377 transitions. [2022-02-10 03:54:26,130 INFO L78 Accepts]: Start accepts. Automaton has 1045 states and 2377 transitions. Word has length 24 [2022-02-10 03:54:26,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:54:26,131 INFO L470 AbstractCegarLoop]: Abstraction has 1045 states and 2377 transitions. [2022-02-10 03:54:26,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 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) [2022-02-10 03:54:26,131 INFO L276 IsEmpty]: Start isEmpty. Operand 1045 states and 2377 transitions. [2022-02-10 03:54:26,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 03:54:26,132 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:54:26,132 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:54:26,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-02-10 03:54:26,349 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,SelfDestructingSolverStorable17 [2022-02-10 03:54:26,349 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:54:26,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:54:26,350 INFO L85 PathProgramCache]: Analyzing trace with hash 2057447698, now seen corresponding path program 4 times [2022-02-10 03:54:26,350 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:54:26,350 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101632379] [2022-02-10 03:54:26,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:54:26,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:54:26,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:54:26,579 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:54:26,579 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:54:26,579 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101632379] [2022-02-10 03:54:26,579 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101632379] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:54:26,579 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97733093] [2022-02-10 03:54:26,579 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:54:26,579 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:54:26,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:54:26,580 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) [2022-02-10 03:54:26,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-02-10 03:54:26,603 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:54:26,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:54:26,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2022-02-10 03:54:26,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:54:26,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:54:26,943 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:54:26,944 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2022-02-10 03:54:26,974 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:54:26,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:54:27,164 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:54:27,179 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:54:27,179 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 56 [2022-02-10 03:54:27,385 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:54:27,388 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:54:27,402 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:54:27,402 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 47 [2022-02-10 03:54:27,681 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:54:27,681 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97733093] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:54:27,681 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:54:27,681 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-02-10 03:54:27,682 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002714871] [2022-02-10 03:54:27,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:54:27,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 03:54:27,682 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:54:27,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 03:54:27,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=489, Unknown=0, NotChecked=0, Total=600 [2022-02-10 03:54:27,683 INFO L87 Difference]: Start difference. First operand 1045 states and 2377 transitions. Second operand has 25 states, 25 states have (on average 2.4) internal successors, (60), 25 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:54:29,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:54:29,722 INFO L93 Difference]: Finished difference Result 1696 states and 3597 transitions. [2022-02-10 03:54:29,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-02-10 03:54:29,723 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.4) internal successors, (60), 25 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 03:54:29,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:54:29,726 INFO L225 Difference]: With dead ends: 1696 [2022-02-10 03:54:29,726 INFO L226 Difference]: Without dead ends: 1691 [2022-02-10 03:54:29,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1111 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=721, Invalid=2939, Unknown=0, NotChecked=0, Total=3660 [2022-02-10 03:54:29,728 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 288 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 03:54:29,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 138 Invalid, 843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 749 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 03:54:29,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1691 states. [2022-02-10 03:54:29,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1691 to 1085. [2022-02-10 03:54:29,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1085 states, 1084 states have (on average 2.2924354243542435) internal successors, (2485), 1084 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:54:29,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1085 states to 1085 states and 2485 transitions. [2022-02-10 03:54:29,744 INFO L78 Accepts]: Start accepts. Automaton has 1085 states and 2485 transitions. Word has length 26 [2022-02-10 03:54:29,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:54:29,744 INFO L470 AbstractCegarLoop]: Abstraction has 1085 states and 2485 transitions. [2022-02-10 03:54:29,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.4) internal successors, (60), 25 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:54:29,744 INFO L276 IsEmpty]: Start isEmpty. Operand 1085 states and 2485 transitions. [2022-02-10 03:54:29,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 03:54:29,746 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:54:29,746 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:54:29,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-02-10 03:54:29,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:54:29,960 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:54:29,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:54:29,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1983730474, now seen corresponding path program 5 times [2022-02-10 03:54:29,960 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:54:29,960 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698235420] [2022-02-10 03:54:29,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:54:29,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:54:29,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:54:30,221 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:54:30,221 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:54:30,221 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698235420] [2022-02-10 03:54:30,221 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698235420] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:54:30,221 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773862910] [2022-02-10 03:54:30,221 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 03:54:30,221 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:54:30,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:54:30,224 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) [2022-02-10 03:54:30,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-02-10 03:54:30,245 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 03:54:30,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:54:30,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-10 03:54:30,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:54:30,626 INFO L353 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2022-02-10 03:54:30,626 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 47 [2022-02-10 03:54:30,673 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:54:30,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:54:30,953 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:54:30,953 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 71 [2022-02-10 03:54:31,593 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:54:31,593 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773862910] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:54:31,593 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:54:31,593 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-02-10 03:54:31,593 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105910938] [2022-02-10 03:54:31,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:54:31,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 03:54:31,594 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:54:31,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 03:54:31,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=594, Unknown=0, NotChecked=0, Total=702 [2022-02-10 03:54:31,595 INFO L87 Difference]: Start difference. First operand 1085 states and 2485 transitions. Second operand has 27 states, 27 states have (on average 2.111111111111111) internal successors, (57), 27 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:54:33,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:54:33,399 INFO L93 Difference]: Finished difference Result 2274 states and 5218 transitions. [2022-02-10 03:54:33,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-02-10 03:54:33,400 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.111111111111111) internal successors, (57), 27 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 03:54:33,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:54:33,405 INFO L225 Difference]: With dead ends: 2274 [2022-02-10 03:54:33,405 INFO L226 Difference]: Without dead ends: 2269 [2022-02-10 03:54:33,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1151 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=561, Invalid=3221, Unknown=0, NotChecked=0, Total=3782 [2022-02-10 03:54:33,407 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 232 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 269 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 03:54:33,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [232 Valid, 128 Invalid, 832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 483 Invalid, 0 Unknown, 269 Unchecked, 0.4s Time] [2022-02-10 03:54:33,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2269 states. [2022-02-10 03:54:33,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2269 to 1097. [2022-02-10 03:54:33,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1097 states, 1096 states have (on average 2.291970802919708) internal successors, (2512), 1096 states have internal predecessors, (2512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:54:33,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1097 states to 1097 states and 2512 transitions. [2022-02-10 03:54:33,429 INFO L78 Accepts]: Start accepts. Automaton has 1097 states and 2512 transitions. Word has length 26 [2022-02-10 03:54:33,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:54:33,429 INFO L470 AbstractCegarLoop]: Abstraction has 1097 states and 2512 transitions. [2022-02-10 03:54:33,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.111111111111111) internal successors, (57), 27 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:54:33,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1097 states and 2512 transitions. [2022-02-10 03:54:33,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 03:54:33,431 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:54:33,431 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:54:33,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-02-10 03:54:33,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:54:33,643 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:54:33,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:54:33,644 INFO L85 PathProgramCache]: Analyzing trace with hash 207700114, now seen corresponding path program 14 times [2022-02-10 03:54:33,644 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:54:33,644 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130078849] [2022-02-10 03:54:33,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:54:33,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:54:33,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:54:33,961 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:54:33,961 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:54:33,962 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130078849] [2022-02-10 03:54:33,962 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130078849] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:54:33,962 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935082725] [2022-02-10 03:54:33,962 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:54:33,962 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:54:33,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:54:33,963 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) [2022-02-10 03:54:33,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-02-10 03:54:33,986 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:54:33,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:54:33,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 03:54:33,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:54:34,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:54:34,320 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:54:34,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:54:34,321 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:54:34,321 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2022-02-10 03:54:34,370 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:54:34,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:54:34,524 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-02-10 03:54:34,524 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 22 treesize of output 47 [2022-02-10 03:54:34,661 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:54:34,661 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935082725] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:54:34,662 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:54:34,662 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 24 [2022-02-10 03:54:34,662 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674288190] [2022-02-10 03:54:34,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:54:34,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 03:54:34,662 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:54:34,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 03:54:34,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=513, Unknown=0, NotChecked=0, Total=600 [2022-02-10 03:54:34,663 INFO L87 Difference]: Start difference. First operand 1097 states and 2512 transitions. Second operand has 25 states, 25 states have (on average 2.68) internal successors, (67), 24 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:54:36,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:54:36,876 INFO L93 Difference]: Finished difference Result 1711 states and 3776 transitions. [2022-02-10 03:54:36,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-02-10 03:54:36,877 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.68) internal successors, (67), 24 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 03:54:36,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:54:36,880 INFO L225 Difference]: With dead ends: 1711 [2022-02-10 03:54:36,880 INFO L226 Difference]: Without dead ends: 1699 [2022-02-10 03:54:36,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1569 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=784, Invalid=4328, Unknown=0, NotChecked=0, Total=5112 [2022-02-10 03:54:36,882 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 242 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 1025 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 1120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 03:54:36,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 225 Invalid, 1120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1025 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 03:54:36,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1699 states. [2022-02-10 03:54:36,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1699 to 1115. [2022-02-10 03:54:36,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 1114 states have (on average 2.279174147217235) internal successors, (2539), 1114 states have internal predecessors, (2539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:54:36,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 2539 transitions. [2022-02-10 03:54:36,901 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 2539 transitions. Word has length 26 [2022-02-10 03:54:36,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:54:36,901 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 2539 transitions. [2022-02-10 03:54:36,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.68) internal successors, (67), 24 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:54:36,902 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 2539 transitions. [2022-02-10 03:54:36,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 03:54:36,904 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:54:36,904 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:54:36,921 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-02-10 03:54:37,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:54:37,121 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:54:37,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:54:37,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1134671638, now seen corresponding path program 6 times [2022-02-10 03:54:37,121 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:54:37,121 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719269639] [2022-02-10 03:54:37,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:54:37,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:54:37,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:54:37,308 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:54:37,308 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:54:37,308 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719269639] [2022-02-10 03:54:37,308 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719269639] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:54:37,308 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114554322] [2022-02-10 03:54:37,308 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 03:54:37,308 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:54:37,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:54:37,309 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) [2022-02-10 03:54:37,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-02-10 03:54:37,332 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 03:54:37,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:54:37,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2022-02-10 03:54:37,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:54:37,665 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:54:37,666 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 30 [2022-02-10 03:54:37,783 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:54:37,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:54:38,038 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:54:38,039 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:54:38,055 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:54:38,056 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 21 treesize of output 48 [2022-02-10 03:54:38,111 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:54:38,112 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 5 [2022-02-10 03:54:38,312 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:54:38,312 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114554322] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:54:38,312 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:54:38,312 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 12] total 28 [2022-02-10 03:54:38,312 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181740447] [2022-02-10 03:54:38,312 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:54:38,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-10 03:54:38,313 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:54:38,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-10 03:54:38,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=664, Unknown=0, NotChecked=0, Total=756 [2022-02-10 03:54:38,313 INFO L87 Difference]: Start difference. First operand 1115 states and 2539 transitions. Second operand has 28 states, 28 states have (on average 2.2857142857142856) internal successors, (64), 28 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:54:42,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:54:42,788 INFO L93 Difference]: Finished difference Result 1775 states and 3751 transitions. [2022-02-10 03:54:42,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-02-10 03:54:42,788 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.2857142857142856) internal successors, (64), 28 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 03:54:42,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:54:42,792 INFO L225 Difference]: With dead ends: 1775 [2022-02-10 03:54:42,792 INFO L226 Difference]: Without dead ends: 1754 [2022-02-10 03:54:42,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2060 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1066, Invalid=6074, Unknown=0, NotChecked=0, Total=7140 [2022-02-10 03:54:42,795 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 367 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 1680 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 1756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-10 03:54:42,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [367 Valid, 305 Invalid, 1756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1680 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-10 03:54:42,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1754 states. [2022-02-10 03:54:42,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1754 to 1124. [2022-02-10 03:54:42,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1124 states, 1123 states have (on average 2.2751558325912735) internal successors, (2555), 1123 states have internal predecessors, (2555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:54:42,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1124 states to 1124 states and 2555 transitions. [2022-02-10 03:54:42,815 INFO L78 Accepts]: Start accepts. Automaton has 1124 states and 2555 transitions. Word has length 26 [2022-02-10 03:54:42,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:54:42,815 INFO L470 AbstractCegarLoop]: Abstraction has 1124 states and 2555 transitions. [2022-02-10 03:54:42,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.2857142857142856) internal successors, (64), 28 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:54:42,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1124 states and 2555 transitions. [2022-02-10 03:54:42,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 03:54:42,817 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:54:42,817 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:54:42,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-02-10 03:54:43,031 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,SelfDestructingSolverStorable21 [2022-02-10 03:54:43,032 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:54:43,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:54:43,032 INFO L85 PathProgramCache]: Analyzing trace with hash 245927254, now seen corresponding path program 7 times [2022-02-10 03:54:43,032 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:54:43,032 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307133159] [2022-02-10 03:54:43,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:54:43,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:54:43,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:54:43,261 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:54:43,262 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:54:43,262 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307133159] [2022-02-10 03:54:43,262 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307133159] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:54:43,262 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410246223] [2022-02-10 03:54:43,262 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 03:54:43,262 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:54:43,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:54:43,263 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) [2022-02-10 03:54:43,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-02-10 03:54:43,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:54:43,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2022-02-10 03:54:43,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:54:43,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:54:43,581 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:54:43,581 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2022-02-10 03:54:43,622 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:54:43,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:54:43,822 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:54:43,838 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:54:43,838 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 56 [2022-02-10 03:54:43,991 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:54:43,994 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:54:44,006 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:54:44,006 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 47 [2022-02-10 03:54:44,228 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:54:44,228 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410246223] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:54:44,229 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:54:44,229 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-02-10 03:54:44,229 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323289451] [2022-02-10 03:54:44,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:54:44,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 03:54:44,229 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:54:44,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 03:54:44,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=488, Unknown=0, NotChecked=0, Total=600 [2022-02-10 03:54:44,230 INFO L87 Difference]: Start difference. First operand 1124 states and 2555 transitions. Second operand has 25 states, 25 states have (on average 2.24) internal successors, (56), 25 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:54:46,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:54:46,040 INFO L93 Difference]: Finished difference Result 1767 states and 3716 transitions. [2022-02-10 03:54:46,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-02-10 03:54:46,040 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.24) internal successors, (56), 25 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 03:54:46,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:54:46,043 INFO L225 Difference]: With dead ends: 1767 [2022-02-10 03:54:46,043 INFO L226 Difference]: Without dead ends: 1762 [2022-02-10 03:54:46,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1121 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=710, Invalid=2950, Unknown=0, NotChecked=0, Total=3660 [2022-02-10 03:54:46,044 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 334 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 990 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 1186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 71 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 03:54:46,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [334 Valid, 237 Invalid, 1186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 990 Invalid, 0 Unknown, 71 Unchecked, 0.5s Time] [2022-02-10 03:54:46,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1762 states. [2022-02-10 03:54:46,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1762 to 1130. [2022-02-10 03:54:46,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1130 states, 1129 states have (on average 2.274579273693534) internal successors, (2568), 1129 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:54:46,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 2568 transitions. [2022-02-10 03:54:46,062 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 2568 transitions. Word has length 26 [2022-02-10 03:54:46,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:54:46,062 INFO L470 AbstractCegarLoop]: Abstraction has 1130 states and 2568 transitions. [2022-02-10 03:54:46,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.24) internal successors, (56), 25 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:54:46,062 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 2568 transitions. [2022-02-10 03:54:46,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 03:54:46,064 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:54:46,064 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:54:46,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-02-10 03:54:46,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-02-10 03:54:46,280 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:54:46,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:54:46,281 INFO L85 PathProgramCache]: Analyzing trace with hash 948958874, now seen corresponding path program 8 times [2022-02-10 03:54:46,281 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:54:46,281 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839851215] [2022-02-10 03:54:46,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:54:46,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:54:46,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:54:46,510 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:54:46,511 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:54:46,511 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839851215] [2022-02-10 03:54:46,511 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839851215] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:54:46,511 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378348243] [2022-02-10 03:54:46,511 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:54:46,511 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:54:46,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:54:46,512 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) [2022-02-10 03:54:46,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-02-10 03:54:46,535 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:54:46,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:54:46,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 03:54:46,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:54:46,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:54:46,923 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:54:46,923 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 28 [2022-02-10 03:54:47,156 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:54:47,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:54:47,401 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:54:47,401 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 71 [2022-02-10 03:54:48,469 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:54:48,469 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378348243] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:54:48,469 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:54:48,469 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 26 [2022-02-10 03:54:48,470 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940293220] [2022-02-10 03:54:48,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:54:48,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-10 03:54:48,470 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:54:48,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-10 03:54:48,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=551, Unknown=0, NotChecked=0, Total=650 [2022-02-10 03:54:48,471 INFO L87 Difference]: Start difference. First operand 1130 states and 2568 transitions. Second operand has 26 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 26 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:54:52,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:54:52,200 INFO L93 Difference]: Finished difference Result 2158 states and 4686 transitions. [2022-02-10 03:54:52,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-02-10 03:54:52,200 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 26 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 03:54:52,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:54:52,203 INFO L225 Difference]: With dead ends: 2158 [2022-02-10 03:54:52,203 INFO L226 Difference]: Without dead ends: 2152 [2022-02-10 03:54:52,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2179 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1159, Invalid=5321, Unknown=0, NotChecked=0, Total=6480 [2022-02-10 03:54:52,206 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 287 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 1251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 438 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 03:54:52,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [287 Valid, 204 Invalid, 1251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 714 Invalid, 0 Unknown, 438 Unchecked, 0.4s Time] [2022-02-10 03:54:52,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2152 states. [2022-02-10 03:54:52,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2152 to 1135. [2022-02-10 03:54:52,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1135 states, 1134 states have (on average 2.2742504409171076) internal successors, (2579), 1134 states have internal predecessors, (2579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:54:52,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 2579 transitions. [2022-02-10 03:54:52,223 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 2579 transitions. Word has length 26 [2022-02-10 03:54:52,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:54:52,223 INFO L470 AbstractCegarLoop]: Abstraction has 1135 states and 2579 transitions. [2022-02-10 03:54:52,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 26 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:54:52,224 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 2579 transitions. [2022-02-10 03:54:52,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 03:54:52,225 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:54:52,225 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:54:52,242 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-02-10 03:54:52,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:54:52,426 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:54:52,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:54:52,426 INFO L85 PathProgramCache]: Analyzing trace with hash 982723286, now seen corresponding path program 9 times [2022-02-10 03:54:52,426 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:54:52,426 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905213893] [2022-02-10 03:54:52,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:54:52,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:54:52,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:54:52,633 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:54:52,633 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:54:52,633 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905213893] [2022-02-10 03:54:52,633 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905213893] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:54:52,633 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433066555] [2022-02-10 03:54:52,633 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:54:52,633 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:54:52,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:54:52,635 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) [2022-02-10 03:54:52,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-02-10 03:54:52,655 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 03:54:52,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:54:52,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 03:54:52,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:54:52,964 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:54:52,965 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 41 [2022-02-10 03:54:53,220 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:54:53,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:54:53,498 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:54:53,498 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 71 [2022-02-10 03:54:54,579 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:54:54,579 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433066555] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:54:54,579 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:54:54,579 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 26 [2022-02-10 03:54:54,579 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002804275] [2022-02-10 03:54:54,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:54:54,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-10 03:54:54,580 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:54:54,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-10 03:54:54,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=554, Unknown=0, NotChecked=0, Total=650 [2022-02-10 03:54:54,580 INFO L87 Difference]: Start difference. First operand 1135 states and 2579 transitions. Second operand has 26 states, 26 states have (on average 2.3461538461538463) internal successors, (61), 26 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:54:56,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:54:56,025 INFO L93 Difference]: Finished difference Result 1437 states and 3157 transitions. [2022-02-10 03:54:56,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-10 03:54:56,025 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.3461538461538463) internal successors, (61), 26 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 03:54:56,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:54:56,028 INFO L225 Difference]: With dead ends: 1437 [2022-02-10 03:54:56,028 INFO L226 Difference]: Without dead ends: 1427 [2022-02-10 03:54:56,029 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 37 SyntacticMatches, 4 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 640 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=443, Invalid=2209, Unknown=0, NotChecked=0, Total=2652 [2022-02-10 03:54:56,029 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 214 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 266 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 03:54:56,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [214 Valid, 198 Invalid, 964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 649 Invalid, 0 Unknown, 266 Unchecked, 0.4s Time] [2022-02-10 03:54:56,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1427 states. [2022-02-10 03:54:56,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1427 to 1143. [2022-02-10 03:54:56,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1143 states, 1142 states have (on average 2.268826619964974) internal successors, (2591), 1142 states have internal predecessors, (2591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:54:56,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 2591 transitions. [2022-02-10 03:54:56,045 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 2591 transitions. Word has length 26 [2022-02-10 03:54:56,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:54:56,045 INFO L470 AbstractCegarLoop]: Abstraction has 1143 states and 2591 transitions. [2022-02-10 03:54:56,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.3461538461538463) internal successors, (61), 26 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:54:56,045 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 2591 transitions. [2022-02-10 03:54:56,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 03:54:56,047 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:54:56,047 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:54:56,067 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-02-10 03:54:56,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:54:56,248 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:54:56,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:54:56,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1592049050, now seen corresponding path program 10 times [2022-02-10 03:54:56,248 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:54:56,248 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479409957] [2022-02-10 03:54:56,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:54:56,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:54:56,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:54:56,503 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:54:56,504 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:54:56,504 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479409957] [2022-02-10 03:54:56,504 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479409957] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:54:56,504 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965867003] [2022-02-10 03:54:56,504 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:54:56,504 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:54:56,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:54:56,505 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) [2022-02-10 03:54:56,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-02-10 03:54:56,526 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:54:56,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:54:56,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2022-02-10 03:54:56,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:54:56,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:54:56,830 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:54:56,839 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2022-02-10 03:54:56,884 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:54:56,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:54:57,158 INFO L353 Elim1Store]: treesize reduction 10, result has 81.8 percent of original size [2022-02-10 03:54:57,158 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 21 treesize of output 56 [2022-02-10 03:54:57,347 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:54:57,350 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:54:57,363 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:54:57,364 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 47 [2022-02-10 03:54:57,672 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:54:57,672 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965867003] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:54:57,672 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:54:57,672 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2022-02-10 03:54:57,672 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577612118] [2022-02-10 03:54:57,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:54:57,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 03:54:57,673 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:54:57,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 03:54:57,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2022-02-10 03:54:57,673 INFO L87 Difference]: Start difference. First operand 1143 states and 2591 transitions. Second operand has 22 states, 22 states have (on average 2.272727272727273) internal successors, (50), 22 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:54:58,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:54:58,894 INFO L93 Difference]: Finished difference Result 1606 states and 3456 transitions. [2022-02-10 03:54:58,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-10 03:54:58,894 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.272727272727273) internal successors, (50), 22 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 03:54:58,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:54:58,897 INFO L225 Difference]: With dead ends: 1606 [2022-02-10 03:54:58,897 INFO L226 Difference]: Without dead ends: 1592 [2022-02-10 03:54:58,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 563 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=290, Invalid=1690, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 03:54:58,898 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 177 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 846 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 03:54:58,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 200 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 846 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 03:54:58,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1592 states. [2022-02-10 03:54:58,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1592 to 1146. [2022-02-10 03:54:58,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1146 states, 1145 states have (on average 2.274235807860262) internal successors, (2604), 1145 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:54:58,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 2604 transitions. [2022-02-10 03:54:58,912 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 2604 transitions. Word has length 26 [2022-02-10 03:54:58,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:54:58,912 INFO L470 AbstractCegarLoop]: Abstraction has 1146 states and 2604 transitions. [2022-02-10 03:54:58,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.272727272727273) internal successors, (50), 22 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:54:58,912 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 2604 transitions. [2022-02-10 03:54:58,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 03:54:58,914 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:54:58,914 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:54:58,929 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-02-10 03:54:59,122 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,SelfDestructingSolverStorable25 [2022-02-10 03:54:59,122 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:54:59,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:54:59,123 INFO L85 PathProgramCache]: Analyzing trace with hash -608702818, now seen corresponding path program 11 times [2022-02-10 03:54:59,123 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:54:59,123 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891247368] [2022-02-10 03:54:59,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:54:59,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:54:59,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:54:59,335 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:54:59,336 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:54:59,336 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891247368] [2022-02-10 03:54:59,336 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891247368] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:54:59,336 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705468793] [2022-02-10 03:54:59,336 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 03:54:59,336 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:54:59,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:54:59,337 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) [2022-02-10 03:54:59,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-02-10 03:54:59,359 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-10 03:54:59,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:54:59,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2022-02-10 03:54:59,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:54:59,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:54:59,620 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:54:59,621 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2022-02-10 03:54:59,656 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:54:59,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:54:59,841 INFO L353 Elim1Store]: treesize reduction 10, result has 81.8 percent of original size [2022-02-10 03:54:59,841 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 20 treesize of output 55 [2022-02-10 03:54:59,974 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:54:59,977 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:54:59,990 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:54:59,990 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 47 [2022-02-10 03:55:00,191 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:55:00,191 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705468793] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:55:00,191 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:55:00,191 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-02-10 03:55:00,192 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323590688] [2022-02-10 03:55:00,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:55:00,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 03:55:00,192 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:55:00,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 03:55:00,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-02-10 03:55:00,192 INFO L87 Difference]: Start difference. First operand 1146 states and 2604 transitions. Second operand has 21 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 21 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:55:01,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:55:01,029 INFO L93 Difference]: Finished difference Result 1600 states and 3422 transitions. [2022-02-10 03:55:01,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-10 03:55:01,029 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 21 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 03:55:01,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:55:01,032 INFO L225 Difference]: With dead ends: 1600 [2022-02-10 03:55:01,032 INFO L226 Difference]: Without dead ends: 1588 [2022-02-10 03:55:01,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 35 SyntacticMatches, 6 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=207, Invalid=1125, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 03:55:01,033 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 136 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 786 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 46 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 03:55:01,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 179 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 786 Invalid, 0 Unknown, 46 Unchecked, 0.4s Time] [2022-02-10 03:55:01,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1588 states. [2022-02-10 03:55:01,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1588 to 1164. [2022-02-10 03:55:01,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1164 states, 1163 states have (on average 2.2656921754084265) internal successors, (2635), 1163 states have internal predecessors, (2635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:55:01,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1164 states to 1164 states and 2635 transitions. [2022-02-10 03:55:01,050 INFO L78 Accepts]: Start accepts. Automaton has 1164 states and 2635 transitions. Word has length 26 [2022-02-10 03:55:01,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:55:01,050 INFO L470 AbstractCegarLoop]: Abstraction has 1164 states and 2635 transitions. [2022-02-10 03:55:01,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 21 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:55:01,050 INFO L276 IsEmpty]: Start isEmpty. Operand 1164 states and 2635 transitions. [2022-02-10 03:55:01,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 03:55:01,052 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:55:01,052 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:55:01,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-02-10 03:55:01,252 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,SelfDestructingSolverStorable26 [2022-02-10 03:55:01,252 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:55:01,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:55:01,253 INFO L85 PathProgramCache]: Analyzing trace with hash -908829230, now seen corresponding path program 12 times [2022-02-10 03:55:01,253 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:55:01,253 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469202365] [2022-02-10 03:55:01,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:55:01,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:55:01,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:55:01,468 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:55:01,469 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:55:01,469 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469202365] [2022-02-10 03:55:01,469 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469202365] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:55:01,469 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678888126] [2022-02-10 03:55:01,469 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 03:55:01,469 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:55:01,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:55:01,470 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) [2022-02-10 03:55:01,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-02-10 03:55:01,492 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 03:55:01,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:55:01,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2022-02-10 03:55:01,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:55:01,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:55:01,744 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:55:01,745 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 24 [2022-02-10 03:55:01,806 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:55:01,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:55:02,034 INFO L353 Elim1Store]: treesize reduction 10, result has 81.8 percent of original size [2022-02-10 03:55:02,035 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 21 treesize of output 56 [2022-02-10 03:55:02,176 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:55:02,178 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:55:02,191 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:55:02,192 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 47 [2022-02-10 03:55:02,416 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:55:02,416 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678888126] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:55:02,416 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:55:02,416 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 25 [2022-02-10 03:55:02,416 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719571178] [2022-02-10 03:55:02,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:55:02,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 03:55:02,416 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:55:02,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 03:55:02,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=501, Unknown=0, NotChecked=0, Total=600 [2022-02-10 03:55:02,417 INFO L87 Difference]: Start difference. First operand 1164 states and 2635 transitions. Second operand has 25 states, 25 states have (on average 2.36) internal successors, (59), 25 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:55:04,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:55:04,686 INFO L93 Difference]: Finished difference Result 1830 states and 3870 transitions. [2022-02-10 03:55:04,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-02-10 03:55:04,686 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.36) internal successors, (59), 25 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 03:55:04,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:55:04,689 INFO L225 Difference]: With dead ends: 1830 [2022-02-10 03:55:04,689 INFO L226 Difference]: Without dead ends: 1813 [2022-02-10 03:55:04,690 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1710 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=801, Invalid=4601, Unknown=0, NotChecked=0, Total=5402 [2022-02-10 03:55:04,691 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 310 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 860 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 03:55:04,691 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [310 Valid, 161 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 860 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 03:55:04,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1813 states. [2022-02-10 03:55:04,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1813 to 1197. [2022-02-10 03:55:04,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1197 states, 1196 states have (on average 2.259197324414716) internal successors, (2702), 1196 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:55:04,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 2702 transitions. [2022-02-10 03:55:04,709 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 2702 transitions. Word has length 26 [2022-02-10 03:55:04,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:55:04,710 INFO L470 AbstractCegarLoop]: Abstraction has 1197 states and 2702 transitions. [2022-02-10 03:55:04,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.36) internal successors, (59), 25 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:55:04,710 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 2702 transitions. [2022-02-10 03:55:04,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 03:55:04,711 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:55:04,712 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:55:04,732 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-02-10 03:55:04,912 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,SelfDestructingSolverStorable27 [2022-02-10 03:55:04,912 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:55:04,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:55:04,913 INFO L85 PathProgramCache]: Analyzing trace with hash -2064882602, now seen corresponding path program 13 times [2022-02-10 03:55:04,913 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:55:04,913 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143020073] [2022-02-10 03:55:04,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:55:04,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:55:04,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:55:05,128 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:55:05,129 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:55:05,129 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143020073] [2022-02-10 03:55:05,129 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143020073] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:55:05,129 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256450774] [2022-02-10 03:55:05,129 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 03:55:05,129 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:55:05,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:55:05,130 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) [2022-02-10 03:55:05,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-02-10 03:55:05,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:55:05,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2022-02-10 03:55:05,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:55:05,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:55:05,435 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:55:05,436 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2022-02-10 03:55:05,505 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:55:05,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:55:05,668 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:55:05,684 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:55:05,684 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 20 treesize of output 55 [2022-02-10 03:55:05,868 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:55:05,870 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:55:05,883 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:55:05,883 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 47 [2022-02-10 03:55:06,134 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:55:06,135 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256450774] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:55:06,135 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:55:06,135 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2022-02-10 03:55:06,135 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851507660] [2022-02-10 03:55:06,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:55:06,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 03:55:06,135 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:55:06,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 03:55:06,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2022-02-10 03:55:06,136 INFO L87 Difference]: Start difference. First operand 1197 states and 2702 transitions. Second operand has 23 states, 23 states have (on average 2.260869565217391) internal successors, (52), 23 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:55:08,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:55:08,245 INFO L93 Difference]: Finished difference Result 1932 states and 3988 transitions. [2022-02-10 03:55:08,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-02-10 03:55:08,245 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.260869565217391) internal successors, (52), 23 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 03:55:08,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:55:08,248 INFO L225 Difference]: With dead ends: 1932 [2022-02-10 03:55:08,248 INFO L226 Difference]: Without dead ends: 1908 [2022-02-10 03:55:08,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 35 SyntacticMatches, 6 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1619 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=840, Invalid=3852, Unknown=0, NotChecked=0, Total=4692 [2022-02-10 03:55:08,250 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 353 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 1092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 251 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 03:55:08,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [353 Valid, 224 Invalid, 1092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 754 Invalid, 0 Unknown, 251 Unchecked, 0.4s Time] [2022-02-10 03:55:08,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1908 states. [2022-02-10 03:55:08,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1908 to 1224. [2022-02-10 03:55:08,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1224 states, 1223 states have (on average 2.2583810302534753) internal successors, (2762), 1223 states have internal predecessors, (2762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:55:08,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1224 states to 1224 states and 2762 transitions. [2022-02-10 03:55:08,267 INFO L78 Accepts]: Start accepts. Automaton has 1224 states and 2762 transitions. Word has length 26 [2022-02-10 03:55:08,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:55:08,267 INFO L470 AbstractCegarLoop]: Abstraction has 1224 states and 2762 transitions. [2022-02-10 03:55:08,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.260869565217391) internal successors, (52), 23 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:55:08,267 INFO L276 IsEmpty]: Start isEmpty. Operand 1224 states and 2762 transitions. [2022-02-10 03:55:08,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 03:55:08,269 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:55:08,269 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:55:08,285 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-02-10 03:55:08,469 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,SelfDestructingSolverStorable28 [2022-02-10 03:55:08,469 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:55:08,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:55:08,470 INFO L85 PathProgramCache]: Analyzing trace with hash -144428454, now seen corresponding path program 15 times [2022-02-10 03:55:08,470 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:55:08,470 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913499965] [2022-02-10 03:55:08,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:55:08,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:55:08,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:55:08,807 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:55:08,808 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:55:08,808 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913499965] [2022-02-10 03:55:08,808 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913499965] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:55:08,808 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799929655] [2022-02-10 03:55:08,808 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:55:08,809 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:55:08,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:55:08,810 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) [2022-02-10 03:55:08,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-02-10 03:55:08,832 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 03:55:08,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:55:08,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 32 conjunts are in the unsatisfiable core [2022-02-10 03:55:08,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:55:09,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:55:09,290 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:55:09,299 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:55:09,300 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 31 [2022-02-10 03:55:09,447 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:55:09,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:55:09,823 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:55:09,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:55:09,831 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:55:09,832 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 29 [2022-02-10 03:55:09,951 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:55:09,952 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799929655] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:55:09,952 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:55:09,952 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 32 [2022-02-10 03:55:09,952 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126020674] [2022-02-10 03:55:09,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:55:09,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-10 03:55:09,953 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:55:09,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-10 03:55:09,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=904, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 03:55:09,953 INFO L87 Difference]: Start difference. First operand 1224 states and 2762 transitions. Second operand has 33 states, 33 states have (on average 2.0303030303030303) internal successors, (67), 32 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:55:11,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:55:11,275 INFO L93 Difference]: Finished difference Result 1397 states and 3116 transitions. [2022-02-10 03:55:11,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-10 03:55:11,275 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.0303030303030303) internal successors, (67), 32 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 03:55:11,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:55:11,277 INFO L225 Difference]: With dead ends: 1397 [2022-02-10 03:55:11,277 INFO L226 Difference]: Without dead ends: 1369 [2022-02-10 03:55:11,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 955 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=507, Invalid=3033, Unknown=0, NotChecked=0, Total=3540 [2022-02-10 03:55:11,278 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 137 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 487 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:55:11,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 181 Invalid, 937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 432 Invalid, 0 Unknown, 487 Unchecked, 0.2s Time] [2022-02-10 03:55:11,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1369 states. [2022-02-10 03:55:11,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1369 to 1230. [2022-02-10 03:55:11,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1230 states, 1229 states have (on average 2.256305939788446) internal successors, (2773), 1229 states have internal predecessors, (2773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:55:11,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1230 states to 1230 states and 2773 transitions. [2022-02-10 03:55:11,291 INFO L78 Accepts]: Start accepts. Automaton has 1230 states and 2773 transitions. Word has length 26 [2022-02-10 03:55:11,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:55:11,291 INFO L470 AbstractCegarLoop]: Abstraction has 1230 states and 2773 transitions. [2022-02-10 03:55:11,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.0303030303030303) internal successors, (67), 32 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:55:11,292 INFO L276 IsEmpty]: Start isEmpty. Operand 1230 states and 2773 transitions. [2022-02-10 03:55:11,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 03:55:11,294 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:55:11,294 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:55:11,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-02-10 03:55:11,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:55:11,511 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:55:11,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:55:11,512 INFO L85 PathProgramCache]: Analyzing trace with hash -2008570082, now seen corresponding path program 16 times [2022-02-10 03:55:11,512 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:55:11,512 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931433509] [2022-02-10 03:55:11,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:55:11,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:55:11,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:55:11,764 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:55:11,765 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:55:11,765 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931433509] [2022-02-10 03:55:11,765 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931433509] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:55:11,765 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7939409] [2022-02-10 03:55:11,765 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:55:11,765 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:55:11,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:55:11,770 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) [2022-02-10 03:55:11,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-02-10 03:55:11,791 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:55:11,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:55:11,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2022-02-10 03:55:11,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:55:12,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:55:12,035 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:55:12,035 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:55:12,036 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-02-10 03:55:12,081 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:55:12,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:55:12,197 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-02-10 03:55:12,197 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 22 treesize of output 47 [2022-02-10 03:55:12,549 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:55:12,549 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7939409] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:55:12,549 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:55:12,549 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 23 [2022-02-10 03:55:12,549 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548833000] [2022-02-10 03:55:12,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:55:12,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 03:55:12,550 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:55:12,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 03:55:12,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=466, Unknown=0, NotChecked=0, Total=552 [2022-02-10 03:55:12,550 INFO L87 Difference]: Start difference. First operand 1230 states and 2773 transitions. Second operand has 24 states, 24 states have (on average 2.75) internal successors, (66), 23 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:55:14,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:55:14,388 INFO L93 Difference]: Finished difference Result 1689 states and 3739 transitions. [2022-02-10 03:55:14,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-02-10 03:55:14,388 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.75) internal successors, (66), 23 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 03:55:14,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:55:14,391 INFO L225 Difference]: With dead ends: 1689 [2022-02-10 03:55:14,391 INFO L226 Difference]: Without dead ends: 1677 [2022-02-10 03:55:14,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 37 SyntacticMatches, 4 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1330 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=607, Invalid=3815, Unknown=0, NotChecked=0, Total=4422 [2022-02-10 03:55:14,392 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 217 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 953 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 1203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 195 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 03:55:14,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [217 Valid, 233 Invalid, 1203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 953 Invalid, 0 Unknown, 195 Unchecked, 0.4s Time] [2022-02-10 03:55:14,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1677 states. [2022-02-10 03:55:14,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1677 to 1241. [2022-02-10 03:55:14,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1241 states, 1240 states have (on average 2.253225806451613) internal successors, (2794), 1240 states have internal predecessors, (2794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:55:14,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1241 states to 1241 states and 2794 transitions. [2022-02-10 03:55:14,409 INFO L78 Accepts]: Start accepts. Automaton has 1241 states and 2794 transitions. Word has length 26 [2022-02-10 03:55:14,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:55:14,409 INFO L470 AbstractCegarLoop]: Abstraction has 1241 states and 2794 transitions. [2022-02-10 03:55:14,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.75) internal successors, (66), 23 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:55:14,409 INFO L276 IsEmpty]: Start isEmpty. Operand 1241 states and 2794 transitions. [2022-02-10 03:55:14,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 03:55:14,411 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:55:14,411 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:55:14,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-02-10 03:55:14,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:55:14,614 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:55:14,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:55:14,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1938107238, now seen corresponding path program 14 times [2022-02-10 03:55:14,615 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:55:14,615 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637919771] [2022-02-10 03:55:14,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:55:14,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:55:14,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:55:14,841 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:55:14,841 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:55:14,841 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637919771] [2022-02-10 03:55:14,841 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637919771] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:55:14,841 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911671720] [2022-02-10 03:55:14,841 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:55:14,841 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:55:14,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:55:14,842 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) [2022-02-10 03:55:14,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-02-10 03:55:14,865 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:55:14,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:55:14,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 03:55:14,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:55:15,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:55:15,142 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:55:15,143 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2022-02-10 03:55:15,196 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:55:15,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:55:15,380 INFO L353 Elim1Store]: treesize reduction 10, result has 81.8 percent of original size [2022-02-10 03:55:15,380 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 21 treesize of output 56 [2022-02-10 03:55:15,630 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:55:15,634 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:55:15,646 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:55:15,647 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 47 [2022-02-10 03:55:15,856 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:55:15,857 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911671720] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:55:15,857 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:55:15,857 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2022-02-10 03:55:15,857 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779274442] [2022-02-10 03:55:15,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:55:15,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 03:55:15,857 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:55:15,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 03:55:15,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2022-02-10 03:55:15,858 INFO L87 Difference]: Start difference. First operand 1241 states and 2794 transitions. Second operand has 22 states, 22 states have (on average 2.272727272727273) internal successors, (50), 22 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:55:16,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:55:16,584 INFO L93 Difference]: Finished difference Result 1565 states and 3393 transitions. [2022-02-10 03:55:16,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-10 03:55:16,584 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.272727272727273) internal successors, (50), 22 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 03:55:16,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:55:16,587 INFO L225 Difference]: With dead ends: 1565 [2022-02-10 03:55:16,587 INFO L226 Difference]: Without dead ends: 1558 [2022-02-10 03:55:16,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=186, Invalid=1004, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 03:55:16,588 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 122 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:55:16,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 158 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 674 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 03:55:16,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1558 states. [2022-02-10 03:55:16,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1558 to 1241. [2022-02-10 03:55:16,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1241 states, 1240 states have (on average 2.253225806451613) internal successors, (2794), 1240 states have internal predecessors, (2794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:55:16,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1241 states to 1241 states and 2794 transitions. [2022-02-10 03:55:16,604 INFO L78 Accepts]: Start accepts. Automaton has 1241 states and 2794 transitions. Word has length 26 [2022-02-10 03:55:16,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:55:16,604 INFO L470 AbstractCegarLoop]: Abstraction has 1241 states and 2794 transitions. [2022-02-10 03:55:16,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.272727272727273) internal successors, (50), 22 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:55:16,604 INFO L276 IsEmpty]: Start isEmpty. Operand 1241 states and 2794 transitions. [2022-02-10 03:55:16,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 03:55:16,606 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:55:16,606 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:55:16,622 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2022-02-10 03:55:16,807 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,SelfDestructingSolverStorable31 [2022-02-10 03:55:16,807 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:55:16,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:55:16,807 INFO L85 PathProgramCache]: Analyzing trace with hash -400894506, now seen corresponding path program 15 times [2022-02-10 03:55:16,807 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:55:16,807 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708873643] [2022-02-10 03:55:16,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:55:16,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:55:16,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:55:17,049 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:55:17,049 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:55:17,049 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708873643] [2022-02-10 03:55:17,049 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708873643] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:55:17,049 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121834104] [2022-02-10 03:55:17,049 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:55:17,050 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:55:17,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:55:17,051 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) [2022-02-10 03:55:17,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-02-10 03:55:17,086 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 03:55:17,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:55:17,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2022-02-10 03:55:17,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:55:17,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:55:17,386 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:55:17,387 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2022-02-10 03:55:17,422 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:55:17,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:55:17,581 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:55:17,597 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:55:17,597 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 56 [2022-02-10 03:55:17,787 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:55:17,790 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:55:17,802 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:55:17,803 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 47 [2022-02-10 03:55:18,061 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:55:18,062 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121834104] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:55:18,062 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:55:18,062 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-02-10 03:55:18,062 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866133564] [2022-02-10 03:55:18,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:55:18,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 03:55:18,062 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:55:18,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 03:55:18,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=499, Unknown=0, NotChecked=0, Total=600 [2022-02-10 03:55:18,063 INFO L87 Difference]: Start difference. First operand 1241 states and 2794 transitions. Second operand has 25 states, 25 states have (on average 2.24) internal successors, (56), 25 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:55:19,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:55:19,313 INFO L93 Difference]: Finished difference Result 1676 states and 3580 transitions. [2022-02-10 03:55:19,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-10 03:55:19,313 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.24) internal successors, (56), 25 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 03:55:19,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:55:19,316 INFO L225 Difference]: With dead ends: 1676 [2022-02-10 03:55:19,316 INFO L226 Difference]: Without dead ends: 1671 [2022-02-10 03:55:19,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 33 SyntacticMatches, 5 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 795 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=469, Invalid=2183, Unknown=0, NotChecked=0, Total=2652 [2022-02-10 03:55:19,318 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 198 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 45 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:55:19,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [198 Valid, 148 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 640 Invalid, 0 Unknown, 45 Unchecked, 0.3s Time] [2022-02-10 03:55:19,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1671 states. [2022-02-10 03:55:19,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1671 to 1253. [2022-02-10 03:55:19,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1253 states, 1252 states have (on average 2.2563897763578273) internal successors, (2825), 1252 states have internal predecessors, (2825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:55:19,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1253 states to 1253 states and 2825 transitions. [2022-02-10 03:55:19,333 INFO L78 Accepts]: Start accepts. Automaton has 1253 states and 2825 transitions. Word has length 26 [2022-02-10 03:55:19,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:55:19,333 INFO L470 AbstractCegarLoop]: Abstraction has 1253 states and 2825 transitions. [2022-02-10 03:55:19,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.24) internal successors, (56), 25 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:55:19,333 INFO L276 IsEmpty]: Start isEmpty. Operand 1253 states and 2825 transitions. [2022-02-10 03:55:19,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 03:55:19,335 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:55:19,335 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:55:19,351 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-02-10 03:55:19,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:55:19,536 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:55:19,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:55:19,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1458190486, now seen corresponding path program 16 times [2022-02-10 03:55:19,536 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:55:19,537 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883519011] [2022-02-10 03:55:19,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:55:19,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:55:19,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:55:19,765 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:55:19,765 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:55:19,766 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883519011] [2022-02-10 03:55:19,766 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883519011] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:55:19,766 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803977985] [2022-02-10 03:55:19,766 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:55:19,766 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:55:19,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:55:19,767 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) [2022-02-10 03:55:19,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-02-10 03:55:19,789 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:55:19,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:55:19,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2022-02-10 03:55:19,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:55:20,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:55:20,145 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:55:20,152 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2022-02-10 03:55:20,192 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:55:20,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:55:20,411 INFO L353 Elim1Store]: treesize reduction 10, result has 81.8 percent of original size [2022-02-10 03:55:20,411 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 21 treesize of output 56 [2022-02-10 03:55:20,644 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:55:20,646 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:55:20,660 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:55:20,660 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 47 [2022-02-10 03:55:20,954 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:55:20,955 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803977985] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:55:20,955 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:55:20,955 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2022-02-10 03:55:20,955 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434295688] [2022-02-10 03:55:20,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:55:20,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 03:55:20,955 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:55:20,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 03:55:20,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2022-02-10 03:55:20,955 INFO L87 Difference]: Start difference. First operand 1253 states and 2825 transitions. Second operand has 22 states, 22 states have (on average 2.272727272727273) internal successors, (50), 22 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:55:21,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:55:21,652 INFO L93 Difference]: Finished difference Result 1619 states and 3490 transitions. [2022-02-10 03:55:21,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-10 03:55:21,652 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.272727272727273) internal successors, (50), 22 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 03:55:21,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:55:21,655 INFO L225 Difference]: With dead ends: 1619 [2022-02-10 03:55:21,655 INFO L226 Difference]: Without dead ends: 1607 [2022-02-10 03:55:21,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=171, Invalid=951, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 03:55:21,656 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 119 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:55:21,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 165 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 03:55:21,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1607 states. [2022-02-10 03:55:21,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1607 to 1258. [2022-02-10 03:55:21,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1258 states, 1257 states have (on average 2.252983293556086) internal successors, (2832), 1257 states have internal predecessors, (2832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:55:21,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 2832 transitions. [2022-02-10 03:55:21,671 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 2832 transitions. Word has length 26 [2022-02-10 03:55:21,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:55:21,671 INFO L470 AbstractCegarLoop]: Abstraction has 1258 states and 2832 transitions. [2022-02-10 03:55:21,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.272727272727273) internal successors, (50), 22 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:55:21,671 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 2832 transitions. [2022-02-10 03:55:21,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 03:55:21,673 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:55:21,673 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:55:21,690 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2022-02-10 03:55:21,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:55:21,874 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:55:21,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:55:21,874 INFO L85 PathProgramCache]: Analyzing trace with hash 302137114, now seen corresponding path program 17 times [2022-02-10 03:55:21,874 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:55:21,874 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688087827] [2022-02-10 03:55:21,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:55:21,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:55:21,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:55:22,142 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:55:22,143 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:55:22,143 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688087827] [2022-02-10 03:55:22,143 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688087827] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:55:22,143 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113333777] [2022-02-10 03:55:22,143 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 03:55:22,143 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:55:22,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:55:22,144 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) [2022-02-10 03:55:22,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-02-10 03:55:22,166 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 03:55:22,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:55:22,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2022-02-10 03:55:22,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:55:22,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:55:22,537 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:55:22,538 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 20 [2022-02-10 03:55:22,649 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:55:22,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:55:22,929 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:55:22,929 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:55:22,944 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:55:22,944 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 21 treesize of output 48 [2022-02-10 03:55:23,066 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:55:23,066 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 5 [2022-02-10 03:55:23,245 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:55:23,245 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113333777] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:55:23,245 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:55:23,245 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 12] total 26 [2022-02-10 03:55:23,245 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664963151] [2022-02-10 03:55:23,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:55:23,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-10 03:55:23,245 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:55:23,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-10 03:55:23,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2022-02-10 03:55:23,246 INFO L87 Difference]: Start difference. First operand 1258 states and 2832 transitions. Second operand has 26 states, 26 states have (on average 2.0) internal successors, (52), 26 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:55:27,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:55:27,131 INFO L93 Difference]: Finished difference Result 1978 states and 4230 transitions. [2022-02-10 03:55:27,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-02-10 03:55:27,132 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.0) internal successors, (52), 26 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 03:55:27,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:55:27,135 INFO L225 Difference]: With dead ends: 1978 [2022-02-10 03:55:27,135 INFO L226 Difference]: Without dead ends: 1966 [2022-02-10 03:55:27,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 32 SyntacticMatches, 4 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1785 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=983, Invalid=4567, Unknown=0, NotChecked=0, Total=5550 [2022-02-10 03:55:27,136 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 283 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 1157 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 1247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 03:55:27,136 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 234 Invalid, 1247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1157 Invalid, 0 Unknown, 31 Unchecked, 0.6s Time] [2022-02-10 03:55:27,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1966 states. [2022-02-10 03:55:27,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1966 to 1270. [2022-02-10 03:55:27,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1270 states, 1269 states have (on average 2.260047281323877) internal successors, (2868), 1269 states have internal predecessors, (2868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:55:27,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1270 states to 1270 states and 2868 transitions. [2022-02-10 03:55:27,157 INFO L78 Accepts]: Start accepts. Automaton has 1270 states and 2868 transitions. Word has length 26 [2022-02-10 03:55:27,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:55:27,157 INFO L470 AbstractCegarLoop]: Abstraction has 1270 states and 2868 transitions. [2022-02-10 03:55:27,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.0) internal successors, (52), 26 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:55:27,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1270 states and 2868 transitions. [2022-02-10 03:55:27,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 03:55:27,159 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:55:27,159 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:55:27,174 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2022-02-10 03:55:27,359 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,SelfDestructingSolverStorable34 [2022-02-10 03:55:27,359 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:55:27,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:55:27,360 INFO L85 PathProgramCache]: Analyzing trace with hash -188218022, now seen corresponding path program 17 times [2022-02-10 03:55:27,360 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:55:27,360 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465797091] [2022-02-10 03:55:27,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:55:27,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:55:27,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:55:27,652 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:55:27,652 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:55:27,652 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465797091] [2022-02-10 03:55:27,652 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465797091] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:55:27,652 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304764019] [2022-02-10 03:55:27,652 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 03:55:27,652 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:55:27,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:55:27,653 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) [2022-02-10 03:55:27,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-02-10 03:55:27,685 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 03:55:27,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:55:27,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2022-02-10 03:55:27,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:55:28,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:55:28,003 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:55:28,004 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:55:28,004 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 11 [2022-02-10 03:55:28,087 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:55:28,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:55:28,204 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-02-10 03:55:28,204 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 22 treesize of output 47 [2022-02-10 03:55:28,327 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:55:28,328 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304764019] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:55:28,328 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:55:28,328 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 23 [2022-02-10 03:55:28,328 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415883871] [2022-02-10 03:55:28,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:55:28,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 03:55:28,328 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:55:28,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 03:55:28,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=465, Unknown=0, NotChecked=0, Total=552 [2022-02-10 03:55:28,328 INFO L87 Difference]: Start difference. First operand 1270 states and 2868 transitions. Second operand has 24 states, 24 states have (on average 2.75) internal successors, (66), 23 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:55:29,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:55:29,380 INFO L93 Difference]: Finished difference Result 1690 states and 3731 transitions. [2022-02-10 03:55:29,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-02-10 03:55:29,381 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.75) internal successors, (66), 23 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 03:55:29,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:55:29,383 INFO L225 Difference]: With dead ends: 1690 [2022-02-10 03:55:29,383 INFO L226 Difference]: Without dead ends: 1678 [2022-02-10 03:55:29,384 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 805 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=429, Invalid=2433, Unknown=0, NotChecked=0, Total=2862 [2022-02-10 03:55:29,384 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 177 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 701 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:55:29,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 195 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 701 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 03:55:29,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1678 states. [2022-02-10 03:55:29,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1678 to 1277. [2022-02-10 03:55:29,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1277 states, 1276 states have (on average 2.2586206896551726) internal successors, (2882), 1276 states have internal predecessors, (2882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:55:29,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1277 states to 1277 states and 2882 transitions. [2022-02-10 03:55:29,399 INFO L78 Accepts]: Start accepts. Automaton has 1277 states and 2882 transitions. Word has length 26 [2022-02-10 03:55:29,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:55:29,399 INFO L470 AbstractCegarLoop]: Abstraction has 1277 states and 2882 transitions. [2022-02-10 03:55:29,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.75) internal successors, (66), 23 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:55:29,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1277 states and 2882 transitions. [2022-02-10 03:55:29,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 03:55:29,400 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:55:29,401 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:55:29,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-02-10 03:55:29,607 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,SelfDestructingSolverStorable35 [2022-02-10 03:55:29,607 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:55:29,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:55:29,608 INFO L85 PathProgramCache]: Analyzing trace with hash -585222294, now seen corresponding path program 18 times [2022-02-10 03:55:29,608 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:55:29,608 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597254855] [2022-02-10 03:55:29,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:55:29,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:55:29,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:55:29,838 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:55:29,838 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:55:29,838 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597254855] [2022-02-10 03:55:29,838 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597254855] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:55:29,838 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534629102] [2022-02-10 03:55:29,839 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 03:55:29,839 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:55:29,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:55:29,840 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) [2022-02-10 03:55:29,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-02-10 03:55:29,860 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 03:55:29,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:55:29,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2022-02-10 03:55:29,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:55:30,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:55:30,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:55:30,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:55:30,149 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:55:30,149 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 47 [2022-02-10 03:55:30,262 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:55:30,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:55:30,439 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:55:30,439 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:55:30,440 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:55:30,449 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:55:30,449 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 41 [2022-02-10 03:55:30,606 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:55:30,606 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534629102] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:55:30,606 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:55:30,606 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2022-02-10 03:55:30,606 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553169235] [2022-02-10 03:55:30,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:55:30,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-10 03:55:30,607 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:55:30,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-10 03:55:30,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=669, Unknown=0, NotChecked=0, Total=812 [2022-02-10 03:55:30,607 INFO L87 Difference]: Start difference. First operand 1277 states and 2882 transitions. Second operand has 29 states, 29 states have (on average 2.3793103448275863) internal successors, (69), 29 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:55:31,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:55:31,951 INFO L93 Difference]: Finished difference Result 1535 states and 3368 transitions. [2022-02-10 03:55:31,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-10 03:55:31,952 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.3793103448275863) internal successors, (69), 29 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 03:55:31,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:55:31,953 INFO L225 Difference]: With dead ends: 1535 [2022-02-10 03:55:31,953 INFO L226 Difference]: Without dead ends: 1506 [2022-02-10 03:55:31,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1162 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=673, Invalid=3487, Unknown=0, NotChecked=0, Total=4160 [2022-02-10 03:55:31,954 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 212 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 197 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:55:31,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [212 Valid, 160 Invalid, 866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 627 Invalid, 0 Unknown, 197 Unchecked, 0.3s Time] [2022-02-10 03:55:31,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2022-02-10 03:55:31,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1289. [2022-02-10 03:55:31,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1289 states, 1288 states have (on average 2.2569875776397517) internal successors, (2907), 1288 states have internal predecessors, (2907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:55:31,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1289 states to 1289 states and 2907 transitions. [2022-02-10 03:55:31,967 INFO L78 Accepts]: Start accepts. Automaton has 1289 states and 2907 transitions. Word has length 26 [2022-02-10 03:55:31,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:55:31,967 INFO L470 AbstractCegarLoop]: Abstraction has 1289 states and 2907 transitions. [2022-02-10 03:55:31,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.3793103448275863) internal successors, (69), 29 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:55:31,968 INFO L276 IsEmpty]: Start isEmpty. Operand 1289 states and 2907 transitions. [2022-02-10 03:55:31,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 03:55:31,969 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:55:31,969 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:55:31,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-02-10 03:55:32,172 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,SelfDestructingSolverStorable36 [2022-02-10 03:55:32,173 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:55:32,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:55:32,174 INFO L85 PathProgramCache]: Analyzing trace with hash -915805738, now seen corresponding path program 18 times [2022-02-10 03:55:32,174 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:55:32,174 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762354290] [2022-02-10 03:55:32,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:55:32,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:55:32,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:55:32,353 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:55:32,353 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:55:32,353 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762354290] [2022-02-10 03:55:32,354 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762354290] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:55:32,354 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518207125] [2022-02-10 03:55:32,354 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 03:55:32,354 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:55:32,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:55:32,355 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) [2022-02-10 03:55:32,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-02-10 03:55:32,376 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 03:55:32,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:55:32,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 03:55:32,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:55:32,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:55:32,717 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:55:32,717 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 30 [2022-02-10 03:55:32,850 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:55:32,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:55:33,094 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:55:33,096 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:55:33,108 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:55:33,108 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 55 [2022-02-10 03:55:33,407 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:55:33,407 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518207125] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:55:33,407 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:55:33,407 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-02-10 03:55:33,407 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818231720] [2022-02-10 03:55:33,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:55:33,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 03:55:33,408 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:55:33,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 03:55:33,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=598, Unknown=0, NotChecked=0, Total=702 [2022-02-10 03:55:33,408 INFO L87 Difference]: Start difference. First operand 1289 states and 2907 transitions. Second operand has 27 states, 27 states have (on average 2.3333333333333335) internal successors, (63), 27 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:55:35,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:55:35,881 INFO L93 Difference]: Finished difference Result 1708 states and 3737 transitions. [2022-02-10 03:55:35,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-02-10 03:55:35,882 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.3333333333333335) internal successors, (63), 27 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 03:55:35,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:55:35,884 INFO L225 Difference]: With dead ends: 1708 [2022-02-10 03:55:35,884 INFO L226 Difference]: Without dead ends: 1703 [2022-02-10 03:55:35,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 41 SyntacticMatches, 5 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1877 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=952, Invalid=5210, Unknown=0, NotChecked=0, Total=6162 [2022-02-10 03:55:35,889 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 240 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 313 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:55:35,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [240 Valid, 218 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 652 Invalid, 0 Unknown, 313 Unchecked, 0.3s Time] [2022-02-10 03:55:35,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2022-02-10 03:55:35,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1307. [2022-02-10 03:55:35,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1307 states, 1306 states have (on average 2.254977029096478) internal successors, (2945), 1306 states have internal predecessors, (2945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:55:35,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1307 states to 1307 states and 2945 transitions. [2022-02-10 03:55:35,906 INFO L78 Accepts]: Start accepts. Automaton has 1307 states and 2945 transitions. Word has length 26 [2022-02-10 03:55:35,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:55:35,906 INFO L470 AbstractCegarLoop]: Abstraction has 1307 states and 2945 transitions. [2022-02-10 03:55:35,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.3333333333333335) internal successors, (63), 27 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:55:35,906 INFO L276 IsEmpty]: Start isEmpty. Operand 1307 states and 2945 transitions. [2022-02-10 03:55:35,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 03:55:35,908 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:55:35,908 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:55:35,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-02-10 03:55:36,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:55:36,109 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:55:36,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:55:36,111 INFO L85 PathProgramCache]: Analyzing trace with hash -306479974, now seen corresponding path program 19 times [2022-02-10 03:55:36,111 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:55:36,111 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58885697] [2022-02-10 03:55:36,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:55:36,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:55:36,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:55:36,271 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:55:36,271 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:55:36,271 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58885697] [2022-02-10 03:55:36,271 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58885697] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:55:36,271 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176405452] [2022-02-10 03:55:36,271 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 03:55:36,271 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:55:36,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:55:36,272 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) [2022-02-10 03:55:36,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-02-10 03:55:36,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:55:36,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 03:55:36,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:55:36,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:55:36,587 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:55:36,588 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2022-02-10 03:55:36,624 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:55:36,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:55:36,796 INFO L353 Elim1Store]: treesize reduction 10, result has 81.8 percent of original size [2022-02-10 03:55:36,796 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 21 treesize of output 56 [2022-02-10 03:55:36,987 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:55:36,990 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:55:37,003 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:55:37,004 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 47 [2022-02-10 03:55:37,283 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:55:37,284 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176405452] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:55:37,284 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:55:37,284 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 25 [2022-02-10 03:55:37,284 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949585509] [2022-02-10 03:55:37,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:55:37,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 03:55:37,284 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:55:37,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 03:55:37,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600 [2022-02-10 03:55:37,285 INFO L87 Difference]: Start difference. First operand 1307 states and 2945 transitions. Second operand has 25 states, 25 states have (on average 2.36) internal successors, (59), 25 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:55:39,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:55:39,317 INFO L93 Difference]: Finished difference Result 2004 states and 4289 transitions. [2022-02-10 03:55:39,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-10 03:55:39,317 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.36) internal successors, (59), 25 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 03:55:39,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:55:39,320 INFO L225 Difference]: With dead ends: 2004 [2022-02-10 03:55:39,320 INFO L226 Difference]: Without dead ends: 1998 [2022-02-10 03:55:39,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1055 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=593, Invalid=3189, Unknown=0, NotChecked=0, Total=3782 [2022-02-10 03:55:39,321 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 207 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 1073 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 1126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 03:55:39,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 212 Invalid, 1126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1073 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 03:55:39,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1998 states. [2022-02-10 03:55:39,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1998 to 1310. [2022-02-10 03:55:39,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1310 states, 1309 states have (on average 2.2536287242169597) internal successors, (2950), 1309 states have internal predecessors, (2950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:55:39,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1310 states to 1310 states and 2950 transitions. [2022-02-10 03:55:39,337 INFO L78 Accepts]: Start accepts. Automaton has 1310 states and 2950 transitions. Word has length 26 [2022-02-10 03:55:39,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:55:39,338 INFO L470 AbstractCegarLoop]: Abstraction has 1310 states and 2950 transitions. [2022-02-10 03:55:39,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.36) internal successors, (59), 25 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:55:39,338 INFO L276 IsEmpty]: Start isEmpty. Operand 1310 states and 2950 transitions. [2022-02-10 03:55:39,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 03:55:39,339 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:55:39,339 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:55:39,355 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2022-02-10 03:55:39,540 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,SelfDestructingSolverStorable38 [2022-02-10 03:55:39,540 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:55:39,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:55:39,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1787735454, now seen corresponding path program 20 times [2022-02-10 03:55:39,540 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:55:39,540 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675360663] [2022-02-10 03:55:39,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:55:39,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:55:39,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:55:39,702 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:55:39,703 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:55:39,703 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675360663] [2022-02-10 03:55:39,703 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675360663] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:55:39,703 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842404863] [2022-02-10 03:55:39,703 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:55:39,703 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:55:39,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:55:39,704 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) [2022-02-10 03:55:39,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-02-10 03:55:39,728 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:55:39,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:55:39,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 03:55:39,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:55:40,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:55:40,077 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:55:40,077 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 32 [2022-02-10 03:55:40,221 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:55:40,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:55:40,401 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:55:40,402 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 70 [2022-02-10 03:55:41,681 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:55:41,681 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842404863] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:55:41,681 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:55:41,681 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-02-10 03:55:41,681 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66833184] [2022-02-10 03:55:41,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:55:41,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 03:55:41,682 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:55:41,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 03:55:41,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2022-02-10 03:55:41,682 INFO L87 Difference]: Start difference. First operand 1310 states and 2950 transitions. Second operand has 24 states, 24 states have (on average 2.375) internal successors, (57), 24 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:55:42,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:55:42,921 INFO L93 Difference]: Finished difference Result 1694 states and 3647 transitions. [2022-02-10 03:55:42,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-10 03:55:42,921 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.375) internal successors, (57), 24 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 03:55:42,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:55:42,924 INFO L225 Difference]: With dead ends: 1694 [2022-02-10 03:55:42,924 INFO L226 Difference]: Without dead ends: 1682 [2022-02-10 03:55:42,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 36 SyntacticMatches, 5 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 623 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=416, Invalid=1564, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 03:55:42,924 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 209 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 198 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:55:42,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [209 Valid, 125 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 490 Invalid, 0 Unknown, 198 Unchecked, 0.3s Time] [2022-02-10 03:55:42,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1682 states. [2022-02-10 03:55:42,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1682 to 1314. [2022-02-10 03:55:42,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1314 states, 1313 states have (on average 2.2513328255902514) internal successors, (2956), 1313 states have internal predecessors, (2956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:55:42,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1314 states to 1314 states and 2956 transitions. [2022-02-10 03:55:42,939 INFO L78 Accepts]: Start accepts. Automaton has 1314 states and 2956 transitions. Word has length 26 [2022-02-10 03:55:42,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:55:42,939 INFO L470 AbstractCegarLoop]: Abstraction has 1314 states and 2956 transitions. [2022-02-10 03:55:42,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.375) internal successors, (57), 24 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:55:42,940 INFO L276 IsEmpty]: Start isEmpty. Operand 1314 states and 2956 transitions. [2022-02-10 03:55:42,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 03:55:42,941 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:55:42,941 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:55:42,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-02-10 03:55:43,151 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,SelfDestructingSolverStorable39 [2022-02-10 03:55:43,151 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:55:43,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:55:43,152 INFO L85 PathProgramCache]: Analyzing trace with hash -162675810, now seen corresponding path program 21 times [2022-02-10 03:55:43,152 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:55:43,152 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866324997] [2022-02-10 03:55:43,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:55:43,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:55:43,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:55:43,312 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:55:43,312 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:55:43,312 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866324997] [2022-02-10 03:55:43,312 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866324997] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:55:43,312 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974030052] [2022-02-10 03:55:43,312 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:55:43,312 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:55:43,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:55:43,313 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) [2022-02-10 03:55:43,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-02-10 03:55:43,334 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 03:55:43,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:55:43,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 03:55:43,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:55:43,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:55:43,646 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:55:43,647 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 33 [2022-02-10 03:55:43,916 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:55:43,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:55:44,213 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:55:44,214 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 70 [2022-02-10 03:55:45,573 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:55:45,574 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974030052] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:55:45,574 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:55:45,574 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2022-02-10 03:55:45,574 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513107989] [2022-02-10 03:55:45,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:55:45,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 03:55:45,574 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:55:45,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 03:55:45,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2022-02-10 03:55:45,575 INFO L87 Difference]: Start difference. First operand 1314 states and 2956 transitions. Second operand has 21 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 21 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:55:47,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:55:47,079 INFO L93 Difference]: Finished difference Result 1712 states and 3685 transitions. [2022-02-10 03:55:47,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-10 03:55:47,079 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 21 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 03:55:47,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:55:47,081 INFO L225 Difference]: With dead ends: 1712 [2022-02-10 03:55:47,081 INFO L226 Difference]: Without dead ends: 1700 [2022-02-10 03:55:47,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 34 SyntacticMatches, 8 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 520 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=363, Invalid=1443, Unknown=0, NotChecked=0, Total=1806 [2022-02-10 03:55:47,082 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 206 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 274 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:55:47,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 92 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 280 Invalid, 0 Unknown, 274 Unchecked, 0.2s Time] [2022-02-10 03:55:47,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1700 states. [2022-02-10 03:55:47,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1700 to 1333. [2022-02-10 03:55:47,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1333 states, 1332 states have (on average 2.2477477477477477) internal successors, (2994), 1332 states have internal predecessors, (2994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:55:47,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1333 states to 1333 states and 2994 transitions. [2022-02-10 03:55:47,098 INFO L78 Accepts]: Start accepts. Automaton has 1333 states and 2994 transitions. Word has length 26 [2022-02-10 03:55:47,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:55:47,098 INFO L470 AbstractCegarLoop]: Abstraction has 1333 states and 2994 transitions. [2022-02-10 03:55:47,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 21 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:55:47,098 INFO L276 IsEmpty]: Start isEmpty. Operand 1333 states and 2994 transitions. [2022-02-10 03:55:47,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 03:55:47,100 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:55:47,100 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:55:47,115 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2022-02-10 03:55:47,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:55:47,300 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:55:47,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:55:47,301 INFO L85 PathProgramCache]: Analyzing trace with hash 870573974, now seen corresponding path program 22 times [2022-02-10 03:55:47,301 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:55:47,301 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887725827] [2022-02-10 03:55:47,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:55:47,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:55:47,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:55:47,476 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:55:47,476 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:55:47,476 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887725827] [2022-02-10 03:55:47,476 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887725827] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:55:47,476 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656312955] [2022-02-10 03:55:47,476 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:55:47,477 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:55:47,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:55:47,478 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) [2022-02-10 03:55:47,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-02-10 03:55:47,498 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:55:47,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:55:47,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 03:55:47,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:55:47,962 INFO L353 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2022-02-10 03:55:47,963 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 47 [2022-02-10 03:55:48,006 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:55:48,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:55:48,212 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:55:48,213 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 71 [2022-02-10 03:55:49,742 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:55:49,742 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656312955] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:55:49,742 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:55:49,743 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-02-10 03:55:49,743 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984942018] [2022-02-10 03:55:49,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:55:49,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-10 03:55:49,743 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:55:49,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-10 03:55:49,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=522, Unknown=0, NotChecked=0, Total=650 [2022-02-10 03:55:49,744 INFO L87 Difference]: Start difference. First operand 1333 states and 2994 transitions. Second operand has 26 states, 26 states have (on average 2.1923076923076925) internal successors, (57), 26 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:55:50,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:55:50,515 INFO L93 Difference]: Finished difference Result 1495 states and 3291 transitions. [2022-02-10 03:55:50,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-10 03:55:50,515 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.1923076923076925) internal successors, (57), 26 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 03:55:50,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:55:50,518 INFO L225 Difference]: With dead ends: 1495 [2022-02-10 03:55:50,518 INFO L226 Difference]: Without dead ends: 1490 [2022-02-10 03:55:50,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 587 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=341, Invalid=1551, Unknown=0, NotChecked=0, Total=1892 [2022-02-10 03:55:50,518 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 109 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 202 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:55:50,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 130 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 244 Invalid, 0 Unknown, 202 Unchecked, 0.1s Time] [2022-02-10 03:55:50,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1490 states. [2022-02-10 03:55:50,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1490 to 1337. [2022-02-10 03:55:50,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1337 states, 1336 states have (on average 2.252245508982036) internal successors, (3009), 1336 states have internal predecessors, (3009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:55:50,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1337 states to 1337 states and 3009 transitions. [2022-02-10 03:55:50,535 INFO L78 Accepts]: Start accepts. Automaton has 1337 states and 3009 transitions. Word has length 26 [2022-02-10 03:55:50,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:55:50,535 INFO L470 AbstractCegarLoop]: Abstraction has 1337 states and 3009 transitions. [2022-02-10 03:55:50,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.1923076923076925) internal successors, (57), 26 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:55:50,536 INFO L276 IsEmpty]: Start isEmpty. Operand 1337 states and 3009 transitions. [2022-02-10 03:55:50,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 03:55:50,537 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:55:50,537 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:55:50,554 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2022-02-10 03:55:50,738 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,SelfDestructingSolverStorable41 [2022-02-10 03:55:50,738 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:55:50,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:55:50,738 INFO L85 PathProgramCache]: Analyzing trace with hash 483673174, now seen corresponding path program 23 times [2022-02-10 03:55:50,738 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:55:50,738 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432341318] [2022-02-10 03:55:50,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:55:50,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:55:50,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:55:50,999 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:55:51,000 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:55:51,000 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432341318] [2022-02-10 03:55:51,000 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432341318] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:55:51,000 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642538047] [2022-02-10 03:55:51,000 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 03:55:51,000 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:55:51,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:55:51,001 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) [2022-02-10 03:55:51,032 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-10 03:55:51,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:55:51,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2022-02-10 03:55:51,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:55:51,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-02-10 03:55:51,509 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:55:51,518 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:55:51,518 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 34 [2022-02-10 03:55:51,701 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:55:51,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:55:52,039 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:55:52,040 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:55:52,056 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:55:52,057 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 21 treesize of output 48 [2022-02-10 03:55:52,255 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:55:52,256 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 5 [2022-02-10 03:55:52,641 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:55:52,642 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642538047] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:55:52,642 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:55:52,642 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 26 [2022-02-10 03:55:52,642 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228294473] [2022-02-10 03:55:52,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:55:52,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-10 03:55:52,642 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:55:52,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-10 03:55:52,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=521, Unknown=0, NotChecked=0, Total=650 [2022-02-10 03:55:52,643 INFO L87 Difference]: Start difference. First operand 1337 states and 3009 transitions. Second operand has 26 states, 26 states have (on average 2.230769230769231) internal successors, (58), 26 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:55:57,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:55:57,843 INFO L93 Difference]: Finished difference Result 2445 states and 5160 transitions. [2022-02-10 03:55:57,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-02-10 03:55:57,844 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.230769230769231) internal successors, (58), 26 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 03:55:57,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:55:57,848 INFO L225 Difference]: With dead ends: 2445 [2022-02-10 03:55:57,848 INFO L226 Difference]: Without dead ends: 2427 [2022-02-10 03:55:57,849 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3484 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=1747, Invalid=8153, Unknown=0, NotChecked=0, Total=9900 [2022-02-10 03:55:57,850 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 440 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 1320 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 1420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 03:55:57,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [440 Valid, 248 Invalid, 1420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1320 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-10 03:55:57,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2427 states. [2022-02-10 03:55:57,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2427 to 1403. [2022-02-10 03:55:57,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1403 states, 1402 states have (on average 2.2796005706134093) internal successors, (3196), 1402 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:55:57,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1403 states to 1403 states and 3196 transitions. [2022-02-10 03:55:57,876 INFO L78 Accepts]: Start accepts. Automaton has 1403 states and 3196 transitions. Word has length 26 [2022-02-10 03:55:57,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:55:57,877 INFO L470 AbstractCegarLoop]: Abstraction has 1403 states and 3196 transitions. [2022-02-10 03:55:57,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.230769230769231) internal successors, (58), 26 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:55:57,877 INFO L276 IsEmpty]: Start isEmpty. Operand 1403 states and 3196 transitions. [2022-02-10 03:55:57,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 03:55:57,879 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:55:57,879 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:55:57,895 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2022-02-10 03:55:58,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:55:58,080 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:55:58,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:55:58,080 INFO L85 PathProgramCache]: Analyzing trace with hash -285479398, now seen corresponding path program 24 times [2022-02-10 03:55:58,080 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:55:58,080 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890637108] [2022-02-10 03:55:58,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:55:58,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:55:58,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:55:58,286 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:55:58,286 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:55:58,286 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890637108] [2022-02-10 03:55:58,286 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890637108] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:55:58,287 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839877952] [2022-02-10 03:55:58,287 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 03:55:58,287 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:55:58,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:55:58,288 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) [2022-02-10 03:55:58,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-02-10 03:55:58,310 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 03:55:58,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:55:58,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2022-02-10 03:55:58,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:55:58,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:55:58,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:55:58,687 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:55:58,687 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 36 [2022-02-10 03:55:58,783 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:55:58,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:55:58,989 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:55:59,009 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:55:59,010 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 20 treesize of output 55 [2022-02-10 03:55:59,339 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:55:59,342 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:55:59,358 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:55:59,358 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 47 [2022-02-10 03:55:59,939 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:55:59,940 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839877952] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:55:59,940 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:55:59,940 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-02-10 03:55:59,940 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286169482] [2022-02-10 03:55:59,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:55:59,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 03:55:59,940 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:55:59,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 03:55:59,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=435, Unknown=0, NotChecked=0, Total=552 [2022-02-10 03:55:59,941 INFO L87 Difference]: Start difference. First operand 1403 states and 3196 transitions. Second operand has 24 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 24 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:56:01,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:56:01,562 INFO L93 Difference]: Finished difference Result 1877 states and 4103 transitions. [2022-02-10 03:56:01,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-10 03:56:01,563 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 24 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 03:56:01,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:56:01,565 INFO L225 Difference]: With dead ends: 1877 [2022-02-10 03:56:01,565 INFO L226 Difference]: Without dead ends: 1872 [2022-02-10 03:56:01,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 35 SyntacticMatches, 5 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 922 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=543, Invalid=2319, Unknown=0, NotChecked=0, Total=2862 [2022-02-10 03:56:01,566 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 190 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 327 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:56:01,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [190 Valid, 158 Invalid, 901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 531 Invalid, 0 Unknown, 327 Unchecked, 0.3s Time] [2022-02-10 03:56:01,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1872 states. [2022-02-10 03:56:01,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1872 to 1423. [2022-02-10 03:56:01,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1423 states, 1422 states have (on average 2.2862165963431784) internal successors, (3251), 1422 states have internal predecessors, (3251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:56:01,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1423 states to 1423 states and 3251 transitions. [2022-02-10 03:56:01,585 INFO L78 Accepts]: Start accepts. Automaton has 1423 states and 3251 transitions. Word has length 26 [2022-02-10 03:56:01,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:56:01,585 INFO L470 AbstractCegarLoop]: Abstraction has 1423 states and 3251 transitions. [2022-02-10 03:56:01,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 24 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:56:01,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1423 states and 3251 transitions. [2022-02-10 03:56:01,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 03:56:01,587 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:56:01,587 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:56:01,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-02-10 03:56:01,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:56:01,788 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:56:01,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:56:01,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1206269730, now seen corresponding path program 25 times [2022-02-10 03:56:01,788 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:56:01,788 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370323147] [2022-02-10 03:56:01,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:56:01,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:56:01,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:56:01,962 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:56:01,962 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:56:01,962 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370323147] [2022-02-10 03:56:01,962 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370323147] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:56:01,963 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475443515] [2022-02-10 03:56:01,963 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 03:56:01,963 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:56:01,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:56:01,964 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) [2022-02-10 03:56:01,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-02-10 03:56:01,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:56:01,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 03:56:01,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:56:02,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:56:02,348 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:56:02,349 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 29 [2022-02-10 03:56:02,407 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:56:02,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:56:02,535 INFO L353 Elim1Store]: treesize reduction 10, result has 81.8 percent of original size [2022-02-10 03:56:02,536 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 20 treesize of output 55 [2022-02-10 03:56:02,668 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:56:02,670 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:56:02,686 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:56:02,686 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 47 [2022-02-10 03:56:02,919 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:56:02,919 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475443515] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:56:02,919 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:56:02,919 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2022-02-10 03:56:02,919 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982340619] [2022-02-10 03:56:02,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:56:02,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 03:56:02,920 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:56:02,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 03:56:02,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=351, Unknown=0, NotChecked=0, Total=462 [2022-02-10 03:56:02,920 INFO L87 Difference]: Start difference. First operand 1423 states and 3251 transitions. Second operand has 22 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 22 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:56:03,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:56:03,639 INFO L93 Difference]: Finished difference Result 1860 states and 4067 transitions. [2022-02-10 03:56:03,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-10 03:56:03,640 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 22 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 03:56:03,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:56:03,643 INFO L225 Difference]: With dead ends: 1860 [2022-02-10 03:56:03,643 INFO L226 Difference]: Without dead ends: 1851 [2022-02-10 03:56:03,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=218, Invalid=972, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 03:56:03,643 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 129 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 765 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:56:03,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 241 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 765 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 03:56:03,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1851 states. [2022-02-10 03:56:03,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1851 to 1425. [2022-02-10 03:56:03,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1425 states, 1424 states have (on average 2.2851123595505616) internal successors, (3254), 1424 states have internal predecessors, (3254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:56:03,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 3254 transitions. [2022-02-10 03:56:03,661 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 3254 transitions. Word has length 26 [2022-02-10 03:56:03,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:56:03,662 INFO L470 AbstractCegarLoop]: Abstraction has 1425 states and 3254 transitions. [2022-02-10 03:56:03,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 22 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:56:03,662 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 3254 transitions. [2022-02-10 03:56:03,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 03:56:03,664 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:56:03,664 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:56:03,679 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2022-02-10 03:56:03,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2022-02-10 03:56:03,864 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:56:03,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:56:03,865 INFO L85 PathProgramCache]: Analyzing trace with hash -755801834, now seen corresponding path program 26 times [2022-02-10 03:56:03,865 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:56:03,865 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130281755] [2022-02-10 03:56:03,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:56:03,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:56:03,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:56:03,998 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:56:03,998 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:56:03,998 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130281755] [2022-02-10 03:56:03,998 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130281755] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:56:03,998 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034918633] [2022-02-10 03:56:03,998 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:56:03,998 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:56:03,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:56:03,999 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) [2022-02-10 03:56:04,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-02-10 03:56:04,021 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:56:04,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:56:04,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 03:56:04,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:56:04,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:56:04,341 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:56:04,341 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 33 [2022-02-10 03:56:04,480 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:56:04,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:56:04,665 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:56:04,666 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 71 [2022-02-10 03:56:05,681 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:56:05,681 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034918633] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:56:05,682 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:56:05,682 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 26 [2022-02-10 03:56:05,682 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135753929] [2022-02-10 03:56:05,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:56:05,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-10 03:56:05,682 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:56:05,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-10 03:56:05,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=539, Unknown=0, NotChecked=0, Total=650 [2022-02-10 03:56:05,683 INFO L87 Difference]: Start difference. First operand 1425 states and 3254 transitions. Second operand has 26 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 26 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:56:07,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:56:07,663 INFO L93 Difference]: Finished difference Result 1887 states and 4125 transitions. [2022-02-10 03:56:07,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-10 03:56:07,663 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 26 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 03:56:07,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:56:07,666 INFO L225 Difference]: With dead ends: 1887 [2022-02-10 03:56:07,666 INFO L226 Difference]: Without dead ends: 1875 [2022-02-10 03:56:07,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 881 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=568, Invalid=2738, Unknown=0, NotChecked=0, Total=3306 [2022-02-10 03:56:07,667 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 228 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 339 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:56:07,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [228 Valid, 170 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 518 Invalid, 0 Unknown, 339 Unchecked, 0.3s Time] [2022-02-10 03:56:07,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1875 states. [2022-02-10 03:56:07,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1875 to 1428. [2022-02-10 03:56:07,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1427 states have (on average 2.283812193412754) internal successors, (3259), 1427 states have internal predecessors, (3259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:56:07,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 3259 transitions. [2022-02-10 03:56:07,684 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 3259 transitions. Word has length 26 [2022-02-10 03:56:07,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:56:07,684 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 3259 transitions. [2022-02-10 03:56:07,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 26 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:56:07,684 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 3259 transitions. [2022-02-10 03:56:07,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 03:56:07,686 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:56:07,686 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:56:07,701 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2022-02-10 03:56:07,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2022-02-10 03:56:07,886 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:56:07,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:56:07,887 INFO L85 PathProgramCache]: Analyzing trace with hash -2095905962, now seen corresponding path program 27 times [2022-02-10 03:56:07,887 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:56:07,887 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533621049] [2022-02-10 03:56:07,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:56:07,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:56:07,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:56:08,056 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:56:08,057 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:56:08,057 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533621049] [2022-02-10 03:56:08,057 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533621049] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:56:08,057 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271543567] [2022-02-10 03:56:08,057 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:56:08,057 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:56:08,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:56:08,058 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) [2022-02-10 03:56:08,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-02-10 03:56:08,088 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 03:56:08,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:56:08,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 03:56:08,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:56:08,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:56:08,391 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:56:08,391 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 30 [2022-02-10 03:56:08,523 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:56:08,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:56:08,695 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:56:08,695 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 70 [2022-02-10 03:56:09,578 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:56:09,578 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271543567] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:56:09,578 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:56:09,579 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-02-10 03:56:09,579 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196637260] [2022-02-10 03:56:09,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:56:09,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 03:56:09,579 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:56:09,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 03:56:09,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552 [2022-02-10 03:56:09,579 INFO L87 Difference]: Start difference. First operand 1428 states and 3259 transitions. Second operand has 24 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 24 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:56:10,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:56:10,609 INFO L93 Difference]: Finished difference Result 1743 states and 3852 transitions. [2022-02-10 03:56:10,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-10 03:56:10,609 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 24 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 03:56:10,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:56:10,612 INFO L225 Difference]: With dead ends: 1743 [2022-02-10 03:56:10,612 INFO L226 Difference]: Without dead ends: 1738 [2022-02-10 03:56:10,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 36 SyntacticMatches, 5 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 613 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=354, Invalid=1626, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 03:56:10,612 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 117 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 439 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:56:10,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 147 Invalid, 790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 322 Invalid, 0 Unknown, 439 Unchecked, 0.2s Time] [2022-02-10 03:56:10,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1738 states. [2022-02-10 03:56:10,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 1434. [2022-02-10 03:56:10,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1434 states, 1433 states have (on average 2.286113049546406) internal successors, (3276), 1433 states have internal predecessors, (3276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:56:10,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1434 states to 1434 states and 3276 transitions. [2022-02-10 03:56:10,629 INFO L78 Accepts]: Start accepts. Automaton has 1434 states and 3276 transitions. Word has length 26 [2022-02-10 03:56:10,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:56:10,629 INFO L470 AbstractCegarLoop]: Abstraction has 1434 states and 3276 transitions. [2022-02-10 03:56:10,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 24 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:56:10,629 INFO L276 IsEmpty]: Start isEmpty. Operand 1434 states and 3276 transitions. [2022-02-10 03:56:10,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 03:56:10,631 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:56:10,631 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:56:10,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-02-10 03:56:10,831 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,SelfDestructingSolverStorable46 [2022-02-10 03:56:10,832 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:56:10,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:56:10,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1278271002, now seen corresponding path program 28 times [2022-02-10 03:56:10,832 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:56:10,832 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889513466] [2022-02-10 03:56:10,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:56:10,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:56:10,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:56:10,996 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:56:10,996 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:56:10,996 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889513466] [2022-02-10 03:56:10,996 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889513466] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:56:10,996 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279846814] [2022-02-10 03:56:10,996 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:56:10,996 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:56:10,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:56:10,997 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) [2022-02-10 03:56:10,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-02-10 03:56:11,016 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:56:11,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:56:11,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2022-02-10 03:56:11,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:56:11,299 INFO L353 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2022-02-10 03:56:11,300 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 81 treesize of output 69 [2022-02-10 03:56:11,376 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:56:11,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:56:11,563 INFO L353 Elim1Store]: treesize reduction 10, result has 81.8 percent of original size [2022-02-10 03:56:11,563 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 21 treesize of output 56 [2022-02-10 03:56:11,749 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:56:11,752 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:56:11,765 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:56:11,766 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 47 [2022-02-10 03:56:12,106 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:56:12,106 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279846814] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:56:12,106 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:56:12,106 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 25 [2022-02-10 03:56:12,106 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424873751] [2022-02-10 03:56:12,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:56:12,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 03:56:12,107 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:56:12,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 03:56:12,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=499, Unknown=0, NotChecked=0, Total=600 [2022-02-10 03:56:12,107 INFO L87 Difference]: Start difference. First operand 1434 states and 3276 transitions. Second operand has 25 states, 25 states have (on average 2.32) internal successors, (58), 25 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:56:14,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:56:14,664 INFO L93 Difference]: Finished difference Result 2275 states and 4839 transitions. [2022-02-10 03:56:14,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-02-10 03:56:14,665 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.32) internal successors, (58), 25 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 03:56:14,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:56:14,668 INFO L225 Difference]: With dead ends: 2275 [2022-02-10 03:56:14,668 INFO L226 Difference]: Without dead ends: 2236 [2022-02-10 03:56:14,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1735 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=902, Invalid=5104, Unknown=0, NotChecked=0, Total=6006 [2022-02-10 03:56:14,669 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 333 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 1314 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 1383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 03:56:14,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [333 Valid, 262 Invalid, 1383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1314 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 03:56:14,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2236 states. [2022-02-10 03:56:14,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2236 to 1461. [2022-02-10 03:56:14,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1461 states, 1460 states have (on average 2.286986301369863) internal successors, (3339), 1460 states have internal predecessors, (3339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:56:14,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 3339 transitions. [2022-02-10 03:56:14,689 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 3339 transitions. Word has length 26 [2022-02-10 03:56:14,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:56:14,689 INFO L470 AbstractCegarLoop]: Abstraction has 1461 states and 3339 transitions. [2022-02-10 03:56:14,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.32) internal successors, (58), 25 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:56:14,689 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 3339 transitions. [2022-02-10 03:56:14,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 03:56:14,691 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:56:14,691 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:56:14,707 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2022-02-10 03:56:14,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:56:14,893 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:56:14,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:56:14,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1883912102, now seen corresponding path program 19 times [2022-02-10 03:56:14,894 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:56:14,894 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019080716] [2022-02-10 03:56:14,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:56:14,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:56:14,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:56:15,087 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:56:15,088 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:56:15,088 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019080716] [2022-02-10 03:56:15,088 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019080716] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:56:15,088 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758185403] [2022-02-10 03:56:15,088 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 03:56:15,088 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:56:15,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:56:15,089 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) [2022-02-10 03:56:15,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-02-10 03:56:15,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:56:15,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2022-02-10 03:56:15,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:56:15,381 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:56:15,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:56:15,382 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:56:15,383 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-02-10 03:56:15,422 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:56:15,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:56:15,521 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-02-10 03:56:15,521 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 22 treesize of output 47 [2022-02-10 03:56:15,751 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:56:15,751 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758185403] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:56:15,751 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:56:15,751 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 22 [2022-02-10 03:56:15,751 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686482789] [2022-02-10 03:56:15,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:56:15,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 03:56:15,752 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:56:15,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 03:56:15,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2022-02-10 03:56:15,752 INFO L87 Difference]: Start difference. First operand 1461 states and 3339 transitions. Second operand has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:56:16,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:56:16,584 INFO L93 Difference]: Finished difference Result 1669 states and 3697 transitions. [2022-02-10 03:56:16,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-10 03:56:16,585 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 03:56:16,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:56:16,588 INFO L225 Difference]: With dead ends: 1669 [2022-02-10 03:56:16,588 INFO L226 Difference]: Without dead ends: 1657 [2022-02-10 03:56:16,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=301, Invalid=1769, Unknown=0, NotChecked=0, Total=2070 [2022-02-10 03:56:16,588 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 181 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:56:16,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 180 Invalid, 809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 03:56:16,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1657 states. [2022-02-10 03:56:16,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1657 to 1474. [2022-02-10 03:56:16,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1474 states, 1473 states have (on average 2.2878479293957907) internal successors, (3370), 1473 states have internal predecessors, (3370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:56:16,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 3370 transitions. [2022-02-10 03:56:16,607 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 3370 transitions. Word has length 26 [2022-02-10 03:56:16,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:56:16,607 INFO L470 AbstractCegarLoop]: Abstraction has 1474 states and 3370 transitions. [2022-02-10 03:56:16,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:56:16,607 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 3370 transitions. [2022-02-10 03:56:16,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 03:56:16,609 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:56:16,609 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:56:16,626 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2022-02-10 03:56:16,814 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,SelfDestructingSolverStorable48 [2022-02-10 03:56:16,814 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:56:16,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:56:16,814 INFO L85 PathProgramCache]: Analyzing trace with hash 546913566, now seen corresponding path program 20 times [2022-02-10 03:56:16,814 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:56:16,815 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443949605] [2022-02-10 03:56:16,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:56:16,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:56:16,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:56:17,060 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:56:17,061 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:56:17,061 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443949605] [2022-02-10 03:56:17,061 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443949605] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:56:17,061 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445172177] [2022-02-10 03:56:17,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:56:17,061 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:56:17,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:56:17,062 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) [2022-02-10 03:56:17,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-02-10 03:56:17,082 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:56:17,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:56:17,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-10 03:56:17,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:56:17,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:56:17,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:56:17,392 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:56:17,393 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:56:17,394 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-02-10 03:56:17,470 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:56:17,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:56:17,607 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:56:17,607 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:56:17,608 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:56:17,618 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:56:17,618 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 41 [2022-02-10 03:56:17,821 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:56:17,821 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445172177] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:56:17,821 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:56:17,821 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-02-10 03:56:17,822 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125342049] [2022-02-10 03:56:17,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:56:17,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 03:56:17,822 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:56:17,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 03:56:17,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=569, Unknown=0, NotChecked=0, Total=702 [2022-02-10 03:56:17,822 INFO L87 Difference]: Start difference. First operand 1474 states and 3370 transitions. Second operand has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 27 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:56:19,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:56:19,251 INFO L93 Difference]: Finished difference Result 1925 states and 4277 transitions. [2022-02-10 03:56:19,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-02-10 03:56:19,252 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 27 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 03:56:19,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:56:19,255 INFO L225 Difference]: With dead ends: 1925 [2022-02-10 03:56:19,255 INFO L226 Difference]: Without dead ends: 1889 [2022-02-10 03:56:19,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 35 SyntacticMatches, 3 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1272 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=730, Invalid=3560, Unknown=0, NotChecked=0, Total=4290 [2022-02-10 03:56:19,256 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 203 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 165 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 03:56:19,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 272 Invalid, 973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 769 Invalid, 0 Unknown, 165 Unchecked, 0.4s Time] [2022-02-10 03:56:19,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1889 states. [2022-02-10 03:56:19,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1889 to 1498. [2022-02-10 03:56:19,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1498 states, 1497 states have (on average 2.282565130260521) internal successors, (3417), 1497 states have internal predecessors, (3417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:56:19,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1498 states to 1498 states and 3417 transitions. [2022-02-10 03:56:19,274 INFO L78 Accepts]: Start accepts. Automaton has 1498 states and 3417 transitions. Word has length 26 [2022-02-10 03:56:19,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:56:19,274 INFO L470 AbstractCegarLoop]: Abstraction has 1498 states and 3417 transitions. [2022-02-10 03:56:19,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 27 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:56:19,274 INFO L276 IsEmpty]: Start isEmpty. Operand 1498 states and 3417 transitions. [2022-02-10 03:56:19,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 03:56:19,276 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:56:19,276 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:56:19,292 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2022-02-10 03:56:19,476 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,SelfDestructingSolverStorable49 [2022-02-10 03:56:19,477 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:56:19,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:56:19,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1110352866, now seen corresponding path program 21 times [2022-02-10 03:56:19,477 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:56:19,477 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830547595] [2022-02-10 03:56:19,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:56:19,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:56:19,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:56:19,739 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:56:19,739 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:56:19,739 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830547595] [2022-02-10 03:56:19,739 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830547595] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:56:19,739 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947176766] [2022-02-10 03:56:19,739 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:56:19,740 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:56:19,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:56:19,741 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:56:19,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-02-10 03:56:19,763 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 03:56:19,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:56:19,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2022-02-10 03:56:19,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:56:20,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:56:20,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:56:20,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:56:20,067 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:56:20,067 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 52 [2022-02-10 03:56:20,171 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:56:20,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:56:20,325 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:56:20,326 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:56:20,326 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:56:20,338 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:56:20,338 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 41 [2022-02-10 03:56:20,489 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:56:20,489 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947176766] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:56:20,489 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:56:20,489 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 26 [2022-02-10 03:56:20,490 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398469539] [2022-02-10 03:56:20,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:56:20,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 03:56:20,490 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:56:20,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 03:56:20,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=575, Unknown=0, NotChecked=0, Total=702 [2022-02-10 03:56:20,490 INFO L87 Difference]: Start difference. First operand 1498 states and 3417 transitions. Second operand has 27 states, 27 states have (on average 2.4074074074074074) internal successors, (65), 26 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:56:21,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:56:21,220 INFO L93 Difference]: Finished difference Result 1720 states and 3846 transitions. [2022-02-10 03:56:21,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-10 03:56:21,221 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.4074074074074074) internal successors, (65), 26 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 03:56:21,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:56:21,224 INFO L225 Difference]: With dead ends: 1720 [2022-02-10 03:56:21,224 INFO L226 Difference]: Without dead ends: 1708 [2022-02-10 03:56:21,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=350, Invalid=1720, Unknown=0, NotChecked=0, Total=2070 [2022-02-10 03:56:21,226 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 119 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 1057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 380 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:56:21,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 126 Invalid, 1057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 659 Invalid, 0 Unknown, 380 Unchecked, 0.3s Time] [2022-02-10 03:56:21,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1708 states. [2022-02-10 03:56:21,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1708 to 1503. [2022-02-10 03:56:21,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1503 states, 1502 states have (on average 2.280958721704394) internal successors, (3426), 1502 states have internal predecessors, (3426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:56:21,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1503 states to 1503 states and 3426 transitions. [2022-02-10 03:56:21,245 INFO L78 Accepts]: Start accepts. Automaton has 1503 states and 3426 transitions. Word has length 26 [2022-02-10 03:56:21,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:56:21,245 INFO L470 AbstractCegarLoop]: Abstraction has 1503 states and 3426 transitions. [2022-02-10 03:56:21,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.4074074074074074) internal successors, (65), 26 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:56:21,245 INFO L276 IsEmpty]: Start isEmpty. Operand 1503 states and 3426 transitions. [2022-02-10 03:56:21,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 03:56:21,247 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:56:21,247 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:56:21,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-02-10 03:56:21,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:56:21,451 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:56:21,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:56:21,452 INFO L85 PathProgramCache]: Analyzing trace with hash 278449630, now seen corresponding path program 29 times [2022-02-10 03:56:21,452 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:56:21,452 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366071902] [2022-02-10 03:56:21,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:56:21,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:56:21,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:56:21,719 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:56:21,720 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:56:21,720 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366071902] [2022-02-10 03:56:21,720 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366071902] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:56:21,720 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707605102] [2022-02-10 03:56:21,721 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 03:56:21,721 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:56:21,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:56:21,736 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) [2022-02-10 03:56:21,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-02-10 03:56:21,758 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 03:56:21,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:56:21,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2022-02-10 03:56:21,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:56:22,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:56:22,246 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:56:22,247 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2022-02-10 03:56:22,300 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:56:22,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:56:22,515 INFO L353 Elim1Store]: treesize reduction 10, result has 81.8 percent of original size [2022-02-10 03:56:22,515 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 21 treesize of output 56 [2022-02-10 03:56:22,772 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:56:22,774 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:56:22,789 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:56:22,789 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 47 [2022-02-10 03:56:23,266 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:56:23,267 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707605102] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:56:23,267 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:56:23,267 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 25 [2022-02-10 03:56:23,267 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059535573] [2022-02-10 03:56:23,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:56:23,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 03:56:23,267 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:56:23,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 03:56:23,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=500, Unknown=0, NotChecked=0, Total=600 [2022-02-10 03:56:23,268 INFO L87 Difference]: Start difference. First operand 1503 states and 3426 transitions. Second operand has 25 states, 25 states have (on average 2.4) internal successors, (60), 25 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:56:24,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:56:24,174 INFO L93 Difference]: Finished difference Result 1986 states and 4334 transitions. [2022-02-10 03:56:24,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-10 03:56:24,174 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.4) internal successors, (60), 25 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 03:56:24,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:56:24,177 INFO L225 Difference]: With dead ends: 1986 [2022-02-10 03:56:24,177 INFO L226 Difference]: Without dead ends: 1980 [2022-02-10 03:56:24,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 35 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=289, Invalid=1517, Unknown=0, NotChecked=0, Total=1806 [2022-02-10 03:56:24,178 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 125 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 846 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 141 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 03:56:24,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 201 Invalid, 1016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 846 Invalid, 0 Unknown, 141 Unchecked, 0.4s Time] [2022-02-10 03:56:24,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1980 states. [2022-02-10 03:56:24,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1980 to 1503. [2022-02-10 03:56:24,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1503 states, 1502 states have (on average 2.280958721704394) internal successors, (3426), 1502 states have internal predecessors, (3426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:56:24,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1503 states to 1503 states and 3426 transitions. [2022-02-10 03:56:24,195 INFO L78 Accepts]: Start accepts. Automaton has 1503 states and 3426 transitions. Word has length 26 [2022-02-10 03:56:24,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:56:24,195 INFO L470 AbstractCegarLoop]: Abstraction has 1503 states and 3426 transitions. [2022-02-10 03:56:24,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.4) internal successors, (60), 25 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:56:24,195 INFO L276 IsEmpty]: Start isEmpty. Operand 1503 states and 3426 transitions. [2022-02-10 03:56:24,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 03:56:24,197 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:56:24,197 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:56:24,214 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2022-02-10 03:56:24,397 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,SelfDestructingSolverStorable51 [2022-02-10 03:56:24,397 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:56:24,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:56:24,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1662230250, now seen corresponding path program 30 times [2022-02-10 03:56:24,398 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:56:24,398 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865557497] [2022-02-10 03:56:24,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:56:24,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:56:24,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:56:24,669 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:56:24,670 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:56:24,670 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865557497] [2022-02-10 03:56:24,670 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865557497] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:56:24,670 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646469350] [2022-02-10 03:56:24,670 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 03:56:24,670 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:56:24,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:56:24,671 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) [2022-02-10 03:56:24,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-02-10 03:56:24,693 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 03:56:24,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:56:24,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 03:56:24,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:56:25,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:56:25,184 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:56:25,185 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 34 [2022-02-10 03:56:25,369 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:56:25,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:56:25,552 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:56:25,552 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 71 [2022-02-10 03:56:26,893 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:56:26,894 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646469350] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:56:26,894 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:56:26,894 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-02-10 03:56:26,894 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641276636] [2022-02-10 03:56:26,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:56:26,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 03:56:26,894 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:56:26,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 03:56:26,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=482, Unknown=0, NotChecked=0, Total=600 [2022-02-10 03:56:26,895 INFO L87 Difference]: Start difference. First operand 1503 states and 3426 transitions. Second operand has 25 states, 25 states have (on average 2.36) internal successors, (59), 25 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:56:28,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:56:28,899 INFO L93 Difference]: Finished difference Result 2141 states and 4612 transitions. [2022-02-10 03:56:28,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-10 03:56:28,899 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.36) internal successors, (59), 25 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 03:56:28,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:56:28,903 INFO L225 Difference]: With dead ends: 2141 [2022-02-10 03:56:28,903 INFO L226 Difference]: Without dead ends: 2129 [2022-02-10 03:56:28,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 914 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=623, Invalid=2347, Unknown=0, NotChecked=0, Total=2970 [2022-02-10 03:56:28,903 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 225 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 178 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:56:28,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 178 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 502 Invalid, 0 Unknown, 178 Unchecked, 0.3s Time] [2022-02-10 03:56:28,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2129 states. [2022-02-10 03:56:28,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2129 to 1519. [2022-02-10 03:56:28,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1519 states, 1518 states have (on average 2.2839262187088276) internal successors, (3467), 1518 states have internal predecessors, (3467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:56:28,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1519 states to 1519 states and 3467 transitions. [2022-02-10 03:56:28,924 INFO L78 Accepts]: Start accepts. Automaton has 1519 states and 3467 transitions. Word has length 26 [2022-02-10 03:56:28,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:56:28,924 INFO L470 AbstractCegarLoop]: Abstraction has 1519 states and 3467 transitions. [2022-02-10 03:56:28,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.36) internal successors, (59), 25 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:56:28,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1519 states and 3467 transitions. [2022-02-10 03:56:28,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 03:56:28,926 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:56:28,926 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:56:28,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2022-02-10 03:56:29,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:56:29,128 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:56:29,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:56:29,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1784114574, now seen corresponding path program 31 times [2022-02-10 03:56:29,129 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:56:29,129 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965358611] [2022-02-10 03:56:29,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:56:29,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:56:29,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:56:29,418 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:56:29,418 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:56:29,418 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965358611] [2022-02-10 03:56:29,419 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965358611] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:56:29,419 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20190186] [2022-02-10 03:56:29,419 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 03:56:29,419 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:56:29,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:56:29,424 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) [2022-02-10 03:56:29,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-02-10 03:56:29,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:56:29,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2022-02-10 03:56:29,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:56:29,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:56:29,857 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:56:29,858 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2022-02-10 03:56:29,901 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:56:29,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:56:30,120 INFO L353 Elim1Store]: treesize reduction 10, result has 81.8 percent of original size [2022-02-10 03:56:30,121 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 21 treesize of output 56 [2022-02-10 03:56:30,829 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:56:30,831 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:56:30,850 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:56:30,850 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 47 [2022-02-10 03:56:31,659 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:56:31,660 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20190186] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:56:31,660 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:56:31,660 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 25 [2022-02-10 03:56:31,660 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469691492] [2022-02-10 03:56:31,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:56:31,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 03:56:31,660 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:56:31,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 03:56:31,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2022-02-10 03:56:31,661 INFO L87 Difference]: Start difference. First operand 1519 states and 3467 transitions. Second operand has 25 states, 25 states have (on average 2.36) internal successors, (59), 25 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:56:33,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:56:33,194 INFO L93 Difference]: Finished difference Result 2073 states and 4527 transitions. [2022-02-10 03:56:33,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-10 03:56:33,194 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.36) internal successors, (59), 25 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 03:56:33,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:56:33,197 INFO L225 Difference]: With dead ends: 2073 [2022-02-10 03:56:33,197 INFO L226 Difference]: Without dead ends: 2066 [2022-02-10 03:56:33,198 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 661 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=454, Invalid=2302, Unknown=0, NotChecked=0, Total=2756 [2022-02-10 03:56:33,198 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 155 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 03:56:33,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 160 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 03:56:33,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2066 states. [2022-02-10 03:56:33,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2066 to 1519. [2022-02-10 03:56:33,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1519 states, 1518 states have (on average 2.2839262187088276) internal successors, (3467), 1518 states have internal predecessors, (3467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:56:33,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1519 states to 1519 states and 3467 transitions. [2022-02-10 03:56:33,216 INFO L78 Accepts]: Start accepts. Automaton has 1519 states and 3467 transitions. Word has length 26 [2022-02-10 03:56:33,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:56:33,216 INFO L470 AbstractCegarLoop]: Abstraction has 1519 states and 3467 transitions. [2022-02-10 03:56:33,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.36) internal successors, (59), 25 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:56:33,217 INFO L276 IsEmpty]: Start isEmpty. Operand 1519 states and 3467 transitions. [2022-02-10 03:56:33,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 03:56:33,218 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:56:33,218 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:56:33,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2022-02-10 03:56:33,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2022-02-10 03:56:33,419 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:56:33,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:56:33,419 INFO L85 PathProgramCache]: Analyzing trace with hash -861233066, now seen corresponding path program 32 times [2022-02-10 03:56:33,419 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:56:33,419 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584126828] [2022-02-10 03:56:33,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:56:33,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:56:33,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:56:33,818 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:56:33,818 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:56:33,818 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584126828] [2022-02-10 03:56:33,818 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584126828] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:56:33,818 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050404404] [2022-02-10 03:56:33,818 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:56:33,818 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:56:33,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:56:33,819 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) [2022-02-10 03:56:33,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-02-10 03:56:33,841 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:56:33,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:56:33,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2022-02-10 03:56:33,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:56:34,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:56:34,349 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:56:34,349 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 20 [2022-02-10 03:56:34,458 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:56:34,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:56:34,693 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:56:34,717 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:56:34,718 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 20 treesize of output 55 [2022-02-10 03:56:35,390 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:56:35,392 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:56:35,411 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:56:35,412 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 47 [2022-02-10 03:56:36,034 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:56:36,035 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050404404] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:56:36,035 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:56:36,035 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-02-10 03:56:36,035 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37953305] [2022-02-10 03:56:36,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:56:36,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 03:56:36,035 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:56:36,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 03:56:36,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552 [2022-02-10 03:56:36,035 INFO L87 Difference]: Start difference. First operand 1519 states and 3467 transitions. Second operand has 24 states, 24 states have (on average 2.375) internal successors, (57), 24 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:56:37,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:56:37,443 INFO L93 Difference]: Finished difference Result 1915 states and 4173 transitions. [2022-02-10 03:56:37,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-02-10 03:56:37,448 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.375) internal successors, (57), 24 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 03:56:37,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:56:37,450 INFO L225 Difference]: With dead ends: 1915 [2022-02-10 03:56:37,450 INFO L226 Difference]: Without dead ends: 1903 [2022-02-10 03:56:37,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 34 SyntacticMatches, 5 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 841 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=515, Invalid=2241, Unknown=0, NotChecked=0, Total=2756 [2022-02-10 03:56:37,451 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 233 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 108 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:56:37,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 121 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 505 Invalid, 0 Unknown, 108 Unchecked, 0.3s Time] [2022-02-10 03:56:37,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1903 states. [2022-02-10 03:56:37,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1903 to 1524. [2022-02-10 03:56:37,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1524 states, 1523 states have (on average 2.281680892974393) internal successors, (3475), 1523 states have internal predecessors, (3475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:56:37,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1524 states to 1524 states and 3475 transitions. [2022-02-10 03:56:37,467 INFO L78 Accepts]: Start accepts. Automaton has 1524 states and 3475 transitions. Word has length 26 [2022-02-10 03:56:37,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:56:37,467 INFO L470 AbstractCegarLoop]: Abstraction has 1524 states and 3475 transitions. [2022-02-10 03:56:37,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.375) internal successors, (57), 24 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:56:37,468 INFO L276 IsEmpty]: Start isEmpty. Operand 1524 states and 3475 transitions. [2022-02-10 03:56:37,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 03:56:37,469 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:56:37,469 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:56:37,486 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2022-02-10 03:56:37,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2022-02-10 03:56:37,670 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:56:37,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:56:37,670 INFO L85 PathProgramCache]: Analyzing trace with hash 166339530, now seen corresponding path program 33 times [2022-02-10 03:56:37,670 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:56:37,670 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171333680] [2022-02-10 03:56:37,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:56:37,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:56:37,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:56:37,810 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:56:37,810 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:56:37,810 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171333680] [2022-02-10 03:56:37,810 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171333680] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:56:37,810 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220263508] [2022-02-10 03:56:37,810 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:56:37,810 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:56:37,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:56:37,811 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) [2022-02-10 03:56:37,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-02-10 03:56:37,834 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-10 03:56:37,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:56:37,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 03:56:37,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:56:38,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:56:38,098 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:56:38,098 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 24 [2022-02-10 03:56:38,153 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:56:38,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:56:38,316 INFO L353 Elim1Store]: treesize reduction 10, result has 81.8 percent of original size [2022-02-10 03:56:38,316 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 21 treesize of output 56 [2022-02-10 03:56:38,445 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:56:38,447 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:56:38,459 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:56:38,460 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 47 [2022-02-10 03:56:38,711 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:56:38,711 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220263508] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:56:38,711 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:56:38,711 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 25 [2022-02-10 03:56:38,711 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771156542] [2022-02-10 03:56:38,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:56:38,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 03:56:38,711 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:56:38,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 03:56:38,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=493, Unknown=0, NotChecked=0, Total=600 [2022-02-10 03:56:38,712 INFO L87 Difference]: Start difference. First operand 1524 states and 3475 transitions. Second operand has 25 states, 25 states have (on average 2.36) internal successors, (59), 25 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:56:40,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:56:40,274 INFO L93 Difference]: Finished difference Result 1995 states and 4355 transitions. [2022-02-10 03:56:40,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-10 03:56:40,275 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.36) internal successors, (59), 25 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 03:56:40,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:56:40,278 INFO L225 Difference]: With dead ends: 1995 [2022-02-10 03:56:40,278 INFO L226 Difference]: Without dead ends: 1988 [2022-02-10 03:56:40,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 995 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=566, Invalid=3094, Unknown=0, NotChecked=0, Total=3660 [2022-02-10 03:56:40,279 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 190 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 03:56:40,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [190 Valid, 201 Invalid, 1090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1037 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 03:56:40,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1988 states. [2022-02-10 03:56:40,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1988 to 1524. [2022-02-10 03:56:40,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1524 states, 1523 states have (on average 2.2803676953381484) internal successors, (3473), 1523 states have internal predecessors, (3473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:56:40,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1524 states to 1524 states and 3473 transitions. [2022-02-10 03:56:40,297 INFO L78 Accepts]: Start accepts. Automaton has 1524 states and 3473 transitions. Word has length 26 [2022-02-10 03:56:40,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:56:40,297 INFO L470 AbstractCegarLoop]: Abstraction has 1524 states and 3473 transitions. [2022-02-10 03:56:40,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.36) internal successors, (59), 25 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:56:40,297 INFO L276 IsEmpty]: Start isEmpty. Operand 1524 states and 3473 transitions. [2022-02-10 03:56:40,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 03:56:40,299 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:56:40,299 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:56:40,317 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2022-02-10 03:56:40,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:56:40,515 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:56:40,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:56:40,516 INFO L85 PathProgramCache]: Analyzing trace with hash -989713842, now seen corresponding path program 34 times [2022-02-10 03:56:40,516 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:56:40,516 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642624663] [2022-02-10 03:56:40,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:56:40,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:56:40,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:56:40,671 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:56:40,672 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:56:40,672 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642624663] [2022-02-10 03:56:40,672 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642624663] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:56:40,672 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014852516] [2022-02-10 03:56:40,672 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:56:40,672 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:56:40,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:56:40,684 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) [2022-02-10 03:56:40,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-02-10 03:56:40,705 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:56:40,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:56:40,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2022-02-10 03:56:40,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:56:40,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:56:40,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:56:40,950 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:56:40,950 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 34 [2022-02-10 03:56:41,027 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:56:41,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:56:41,206 INFO L353 Elim1Store]: treesize reduction 10, result has 81.8 percent of original size [2022-02-10 03:56:41,207 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 21 treesize of output 56 [2022-02-10 03:56:41,352 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:56:41,354 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:56:41,366 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:56:41,367 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 47 [2022-02-10 03:56:41,635 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:56:41,635 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1014852516] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:56:41,635 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:56:41,635 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 25 [2022-02-10 03:56:41,635 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745053465] [2022-02-10 03:56:41,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:56:41,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 03:56:41,636 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:56:41,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 03:56:41,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=490, Unknown=0, NotChecked=0, Total=600 [2022-02-10 03:56:41,636 INFO L87 Difference]: Start difference. First operand 1524 states and 3473 transitions. Second operand has 25 states, 25 states have (on average 2.36) internal successors, (59), 25 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:56:43,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:56:43,203 INFO L93 Difference]: Finished difference Result 2151 states and 4645 transitions. [2022-02-10 03:56:43,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-10 03:56:43,203 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.36) internal successors, (59), 25 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 03:56:43,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:56:43,206 INFO L225 Difference]: With dead ends: 2151 [2022-02-10 03:56:43,206 INFO L226 Difference]: Without dead ends: 2127 [2022-02-10 03:56:43,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 795 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=548, Invalid=2644, Unknown=0, NotChecked=0, Total=3192 [2022-02-10 03:56:43,207 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 239 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 1020 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 1071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 03:56:43,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [239 Valid, 179 Invalid, 1071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1020 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 03:56:43,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2127 states. [2022-02-10 03:56:43,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2127 to 1528. [2022-02-10 03:56:43,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1528 states, 1527 states have (on average 2.280943025540275) internal successors, (3483), 1527 states have internal predecessors, (3483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:56:43,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1528 states to 1528 states and 3483 transitions. [2022-02-10 03:56:43,225 INFO L78 Accepts]: Start accepts. Automaton has 1528 states and 3483 transitions. Word has length 26 [2022-02-10 03:56:43,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:56:43,225 INFO L470 AbstractCegarLoop]: Abstraction has 1528 states and 3483 transitions. [2022-02-10 03:56:43,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.36) internal successors, (59), 25 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:56:43,225 INFO L276 IsEmpty]: Start isEmpty. Operand 1528 states and 3483 transitions. [2022-02-10 03:56:43,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 03:56:43,227 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:56:43,227 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:56:43,243 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2022-02-10 03:56:43,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:56:43,438 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:56:43,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:56:43,439 INFO L85 PathProgramCache]: Analyzing trace with hash 2077320222, now seen corresponding path program 22 times [2022-02-10 03:56:43,439 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:56:43,439 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643513554] [2022-02-10 03:56:43,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:56:43,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:56:43,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:56:43,662 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:56:43,662 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:56:43,662 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643513554] [2022-02-10 03:56:43,662 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643513554] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:56:43,663 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977419930] [2022-02-10 03:56:43,663 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:56:43,663 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:56:43,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:56:43,664 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) [2022-02-10 03:56:43,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-02-10 03:56:43,684 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:56:43,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:56:43,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2022-02-10 03:56:43,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:56:43,927 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2022-02-10 03:56:43,963 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:56:43,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:56:44,054 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-02-10 03:56:44,055 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 22 treesize of output 47 [2022-02-10 03:56:44,221 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:56:44,221 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977419930] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:56:44,221 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:56:44,221 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 22 [2022-02-10 03:56:44,221 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782788830] [2022-02-10 03:56:44,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:56:44,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 03:56:44,222 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:56:44,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 03:56:44,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506 [2022-02-10 03:56:44,222 INFO L87 Difference]: Start difference. First operand 1528 states and 3483 transitions. Second operand has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:56:44,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:56:44,544 INFO L93 Difference]: Finished difference Result 1565 states and 3537 transitions. [2022-02-10 03:56:44,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-10 03:56:44,544 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 03:56:44,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:56:44,547 INFO L225 Difference]: With dead ends: 1565 [2022-02-10 03:56:44,547 INFO L226 Difference]: Without dead ends: 1560 [2022-02-10 03:56:44,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=183, Invalid=873, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 03:56:44,548 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 75 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 67 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:56:44,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 123 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 309 Invalid, 0 Unknown, 67 Unchecked, 0.1s Time] [2022-02-10 03:56:44,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1560 states. [2022-02-10 03:56:44,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1560 to 1531. [2022-02-10 03:56:44,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1531 states, 1530 states have (on average 2.281045751633987) internal successors, (3490), 1530 states have internal predecessors, (3490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:56:44,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1531 states to 1531 states and 3490 transitions. [2022-02-10 03:56:44,566 INFO L78 Accepts]: Start accepts. Automaton has 1531 states and 3490 transitions. Word has length 26 [2022-02-10 03:56:44,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:56:44,566 INFO L470 AbstractCegarLoop]: Abstraction has 1531 states and 3490 transitions. [2022-02-10 03:56:44,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:56:44,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1531 states and 3490 transitions. [2022-02-10 03:56:44,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 03:56:44,567 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:56:44,568 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:56:44,585 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2022-02-10 03:56:44,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:56:44,768 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:56:44,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:56:44,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1501309406, now seen corresponding path program 23 times [2022-02-10 03:56:44,768 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:56:44,768 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549862854] [2022-02-10 03:56:44,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:56:44,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:56:44,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:56:44,993 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:56:44,993 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:56:44,994 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549862854] [2022-02-10 03:56:44,994 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549862854] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:56:44,994 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414635651] [2022-02-10 03:56:44,994 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 03:56:44,994 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:56:44,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:56:44,995 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) [2022-02-10 03:56:44,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-02-10 03:56:45,017 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 03:56:45,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:56:45,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 03:56:45,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:56:45,259 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 24 treesize of output 16 [2022-02-10 03:56:45,306 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:56:45,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:56:45,411 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-02-10 03:56:45,411 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 22 treesize of output 47 [2022-02-10 03:56:45,606 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:56:45,606 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414635651] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:56:45,606 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:56:45,606 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 23 [2022-02-10 03:56:45,606 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924115700] [2022-02-10 03:56:45,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:56:45,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 03:56:45,606 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:56:45,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 03:56:45,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2022-02-10 03:56:45,607 INFO L87 Difference]: Start difference. First operand 1531 states and 3490 transitions. Second operand has 24 states, 24 states have (on average 2.5833333333333335) internal successors, (62), 23 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:56:46,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:56:46,260 INFO L93 Difference]: Finished difference Result 1861 states and 4166 transitions. [2022-02-10 03:56:46,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-10 03:56:46,261 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.5833333333333335) internal successors, (62), 23 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 03:56:46,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:56:46,264 INFO L225 Difference]: With dead ends: 1861 [2022-02-10 03:56:46,264 INFO L226 Difference]: Without dead ends: 1843 [2022-02-10 03:56:46,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 520 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=301, Invalid=1591, Unknown=0, NotChecked=0, Total=1892 [2022-02-10 03:56:46,265 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 131 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:56:46,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 136 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 03:56:46,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1843 states. [2022-02-10 03:56:46,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1843 to 1537. [2022-02-10 03:56:46,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1537 states, 1536 states have (on average 2.279296875) internal successors, (3501), 1536 states have internal predecessors, (3501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:56:46,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1537 states to 1537 states and 3501 transitions. [2022-02-10 03:56:46,282 INFO L78 Accepts]: Start accepts. Automaton has 1537 states and 3501 transitions. Word has length 26 [2022-02-10 03:56:46,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:56:46,283 INFO L470 AbstractCegarLoop]: Abstraction has 1537 states and 3501 transitions. [2022-02-10 03:56:46,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.5833333333333335) internal successors, (62), 23 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:56:46,283 INFO L276 IsEmpty]: Start isEmpty. Operand 1537 states and 3501 transitions. [2022-02-10 03:56:46,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-10 03:56:46,284 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:56:46,284 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:56:46,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2022-02-10 03:56:46,485 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,SelfDestructingSolverStorable58 [2022-02-10 03:56:46,485 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:56:46,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:56:46,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1330432786, now seen corresponding path program 24 times [2022-02-10 03:56:46,485 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:56:46,486 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132521256] [2022-02-10 03:56:46,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:56:46,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:56:46,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:56:46,717 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:56:46,717 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:56:46,717 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132521256] [2022-02-10 03:56:46,717 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132521256] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:56:46,717 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435015393] [2022-02-10 03:56:46,718 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 03:56:46,718 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:56:46,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:56:46,718 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) [2022-02-10 03:56:46,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-02-10 03:56:46,740 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-10 03:56:46,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:56:46,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 03:56:46,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:56:46,996 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-02-10 03:56:47,043 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:56:47,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:56:47,137 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-02-10 03:56:47,137 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 22 treesize of output 47 [2022-02-10 03:56:47,295 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:56:47,295 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435015393] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:56:47,295 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:56:47,295 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 23 [2022-02-10 03:56:47,295 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368408781] [2022-02-10 03:56:47,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:56:47,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 03:56:47,295 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:56:47,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 03:56:47,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=453, Unknown=0, NotChecked=0, Total=552 [2022-02-10 03:56:47,296 INFO L87 Difference]: Start difference. First operand 1537 states and 3501 transitions. Second operand has 24 states, 24 states have (on average 2.6666666666666665) internal successors, (64), 23 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:56:48,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:56:48,519 INFO L93 Difference]: Finished difference Result 1978 states and 4463 transitions. [2022-02-10 03:56:48,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-10 03:56:48,520 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.6666666666666665) internal successors, (64), 23 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-10 03:56:48,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:56:48,523 INFO L225 Difference]: With dead ends: 1978 [2022-02-10 03:56:48,523 INFO L226 Difference]: Without dead ends: 1966 [2022-02-10 03:56:48,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 967 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=516, Invalid=2676, Unknown=0, NotChecked=0, Total=3192 [2022-02-10 03:56:48,523 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 130 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:56:48,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 167 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 693 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 03:56:48,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1966 states. [2022-02-10 03:56:48,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1966 to 1541. [2022-02-10 03:56:48,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1541 states, 1540 states have (on average 2.277922077922078) internal successors, (3508), 1540 states have internal predecessors, (3508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:56:48,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1541 states to 1541 states and 3508 transitions. [2022-02-10 03:56:48,542 INFO L78 Accepts]: Start accepts. Automaton has 1541 states and 3508 transitions. Word has length 26 [2022-02-10 03:56:48,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:56:48,542 INFO L470 AbstractCegarLoop]: Abstraction has 1541 states and 3508 transitions. [2022-02-10 03:56:48,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.6666666666666665) internal successors, (64), 23 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:56:48,542 INFO L276 IsEmpty]: Start isEmpty. Operand 1541 states and 3508 transitions. [2022-02-10 03:56:48,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:56:48,544 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:56:48,544 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:56:48,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2022-02-10 03:56:48,759 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,SelfDestructingSolverStorable59 [2022-02-10 03:56:48,759 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:56:48,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:56:48,760 INFO L85 PathProgramCache]: Analyzing trace with hash -39591056, now seen corresponding path program 35 times [2022-02-10 03:56:48,760 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:56:48,760 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44554860] [2022-02-10 03:56:48,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:56:48,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:56:48,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:56:48,818 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:56:48,818 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:56:48,818 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44554860] [2022-02-10 03:56:48,818 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44554860] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:56:48,818 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061625862] [2022-02-10 03:56:48,818 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 03:56:48,818 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:56:48,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:56:48,819 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) [2022-02-10 03:56:48,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-02-10 03:56:48,842 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-10 03:56:48,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:56:48,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 03:56:48,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:56:48,969 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:56:48,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:56:49,100 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:56:49,100 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061625862] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:56:49,100 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:56:49,100 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-02-10 03:56:49,100 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043568881] [2022-02-10 03:56:49,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:56:49,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 03:56:49,100 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:56:49,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 03:56:49,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2022-02-10 03:56:49,101 INFO L87 Difference]: Start difference. First operand 1541 states and 3508 transitions. Second operand has 21 states, 21 states have (on average 2.8095238095238093) internal successors, (59), 21 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:56:51,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:56:51,074 INFO L93 Difference]: Finished difference Result 3620 states and 7356 transitions. [2022-02-10 03:56:51,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2022-02-10 03:56:51,074 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.8095238095238093) internal successors, (59), 21 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:56:51,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:56:51,080 INFO L225 Difference]: With dead ends: 3620 [2022-02-10 03:56:51,080 INFO L226 Difference]: Without dead ends: 3620 [2022-02-10 03:56:51,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5608 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2680, Invalid=11362, Unknown=0, NotChecked=0, Total=14042 [2022-02-10 03:56:51,082 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 484 mSDsluCounter, 920 mSDsCounter, 0 mSdLazyCounter, 1623 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 1749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 03:56:51,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [484 Valid, 596 Invalid, 1749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1623 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-10 03:56:51,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3620 states. [2022-02-10 03:56:51,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3620 to 1785. [2022-02-10 03:56:51,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1785 states, 1784 states have (on average 2.3492152466367715) internal successors, (4191), 1784 states have internal predecessors, (4191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:56:51,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1785 states to 1785 states and 4191 transitions. [2022-02-10 03:56:51,114 INFO L78 Accepts]: Start accepts. Automaton has 1785 states and 4191 transitions. Word has length 28 [2022-02-10 03:56:51,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:56:51,114 INFO L470 AbstractCegarLoop]: Abstraction has 1785 states and 4191 transitions. [2022-02-10 03:56:51,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.8095238095238093) internal successors, (59), 21 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:56:51,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1785 states and 4191 transitions. [2022-02-10 03:56:51,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:56:51,117 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:56:51,117 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:56:51,132 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2022-02-10 03:56:51,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:56:51,317 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:56:51,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:56:51,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1889338640, now seen corresponding path program 25 times [2022-02-10 03:56:51,318 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:56:51,318 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967423996] [2022-02-10 03:56:51,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:56:51,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:56:51,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:56:51,372 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:56:51,372 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:56:51,372 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967423996] [2022-02-10 03:56:51,372 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967423996] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:56:51,372 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556558911] [2022-02-10 03:56:51,372 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 03:56:51,372 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:56:51,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:56:51,373 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) [2022-02-10 03:56:51,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-02-10 03:56:51,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:56:51,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 03:56:51,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:56:51,501 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:56:51,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:56:51,639 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:56:51,639 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556558911] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:56:51,639 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:56:51,640 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2022-02-10 03:56:51,640 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359059634] [2022-02-10 03:56:51,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:56:51,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 03:56:51,640 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:56:51,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 03:56:51,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2022-02-10 03:56:51,640 INFO L87 Difference]: Start difference. First operand 1785 states and 4191 transitions. Second operand has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:56:52,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:56:52,806 INFO L93 Difference]: Finished difference Result 4023 states and 8552 transitions. [2022-02-10 03:56:52,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-02-10 03:56:52,806 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:56:52,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:56:52,812 INFO L225 Difference]: With dead ends: 4023 [2022-02-10 03:56:52,812 INFO L226 Difference]: Without dead ends: 4023 [2022-02-10 03:56:52,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2229 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1231, Invalid=5249, Unknown=0, NotChecked=0, Total=6480 [2022-02-10 03:56:52,813 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 418 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 03:56:52,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [418 Valid, 364 Invalid, 988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 881 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 03:56:52,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4023 states. [2022-02-10 03:56:52,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4023 to 1841. [2022-02-10 03:56:52,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1841 states, 1840 states have (on average 2.3342391304347827) internal successors, (4295), 1840 states have internal predecessors, (4295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:56:52,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 4295 transitions. [2022-02-10 03:56:52,846 INFO L78 Accepts]: Start accepts. Automaton has 1841 states and 4295 transitions. Word has length 28 [2022-02-10 03:56:52,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:56:52,846 INFO L470 AbstractCegarLoop]: Abstraction has 1841 states and 4295 transitions. [2022-02-10 03:56:52,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:56:52,846 INFO L276 IsEmpty]: Start isEmpty. Operand 1841 states and 4295 transitions. [2022-02-10 03:56:52,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:56:52,848 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:56:52,848 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:56:52,874 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2022-02-10 03:56:53,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:56:53,049 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:56:53,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:56:53,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1289099312, now seen corresponding path program 36 times [2022-02-10 03:56:53,049 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:56:53,049 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754191226] [2022-02-10 03:56:53,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:56:53,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:56:53,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:56:53,107 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:56:53,107 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:56:53,107 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754191226] [2022-02-10 03:56:53,107 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754191226] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:56:53,107 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827708806] [2022-02-10 03:56:53,107 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 03:56:53,107 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:56:53,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:56:53,108 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) [2022-02-10 03:56:53,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-02-10 03:56:53,132 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-10 03:56:53,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:56:53,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 03:56:53,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:56:53,262 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:56:53,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:56:53,440 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:56:53,440 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827708806] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:56:53,440 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:56:53,440 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2022-02-10 03:56:53,440 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047991298] [2022-02-10 03:56:53,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:56:53,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 03:56:53,440 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:56:53,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 03:56:53,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2022-02-10 03:56:53,441 INFO L87 Difference]: Start difference. First operand 1841 states and 4295 transitions. Second operand has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 23 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:56:57,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:56:57,311 INFO L93 Difference]: Finished difference Result 4980 states and 9961 transitions. [2022-02-10 03:56:57,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2022-02-10 03:56:57,312 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 23 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:56:57,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:56:57,319 INFO L225 Difference]: With dead ends: 4980 [2022-02-10 03:56:57,319 INFO L226 Difference]: Without dead ends: 4980 [2022-02-10 03:56:57,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17220 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=7033, Invalid=31579, Unknown=0, NotChecked=0, Total=38612 [2022-02-10 03:56:57,325 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 848 mSDsluCounter, 981 mSDsCounter, 0 mSdLazyCounter, 1920 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 2132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 1920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-10 03:56:57,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [848 Valid, 629 Invalid, 2132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 1920 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-10 03:56:57,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4980 states. [2022-02-10 03:56:57,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4980 to 1859. [2022-02-10 03:56:57,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1859 states, 1858 states have (on average 2.3347685683530677) internal successors, (4338), 1858 states have internal predecessors, (4338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:56:57,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1859 states to 1859 states and 4338 transitions. [2022-02-10 03:56:57,370 INFO L78 Accepts]: Start accepts. Automaton has 1859 states and 4338 transitions. Word has length 28 [2022-02-10 03:56:57,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:56:57,371 INFO L470 AbstractCegarLoop]: Abstraction has 1859 states and 4338 transitions. [2022-02-10 03:56:57,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 23 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:56:57,371 INFO L276 IsEmpty]: Start isEmpty. Operand 1859 states and 4338 transitions. [2022-02-10 03:56:57,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:56:57,373 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:56:57,373 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:56:57,388 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2022-02-10 03:56:57,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:56:57,575 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:56:57,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:56:57,576 INFO L85 PathProgramCache]: Analyzing trace with hash -232014156, now seen corresponding path program 37 times [2022-02-10 03:56:57,576 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:56:57,576 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051489198] [2022-02-10 03:56:57,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:56:57,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:56:57,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:56:57,620 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:56:57,620 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:56:57,620 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051489198] [2022-02-10 03:56:57,620 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051489198] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:56:57,620 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918811023] [2022-02-10 03:56:57,620 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 03:56:57,621 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:56:57,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:56:57,621 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) [2022-02-10 03:56:57,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-02-10 03:56:57,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:56:57,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-10 03:56:57,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:56:57,742 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:56:57,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:56:57,850 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:56:57,850 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918811023] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:56:57,850 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:56:57,850 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2022-02-10 03:56:57,850 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507120496] [2022-02-10 03:56:57,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:56:57,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-10 03:56:57,851 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:56:57,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-10 03:56:57,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2022-02-10 03:56:57,854 INFO L87 Difference]: Start difference. First operand 1859 states and 4338 transitions. Second operand has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:56:58,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:56:58,066 INFO L93 Difference]: Finished difference Result 3209 states and 7124 transitions. [2022-02-10 03:56:58,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-10 03:56:58,066 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:56:58,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:56:58,071 INFO L225 Difference]: With dead ends: 3209 [2022-02-10 03:56:58,071 INFO L226 Difference]: Without dead ends: 3206 [2022-02-10 03:56:58,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=342, Unknown=0, NotChecked=0, Total=552 [2022-02-10 03:56:58,071 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 297 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:56:58,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 57 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:56:58,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3206 states. [2022-02-10 03:56:58,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3206 to 2351. [2022-02-10 03:56:58,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2351 states, 2350 states have (on average 2.4191489361702128) internal successors, (5685), 2350 states have internal predecessors, (5685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:56:58,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2351 states to 2351 states and 5685 transitions. [2022-02-10 03:56:58,100 INFO L78 Accepts]: Start accepts. Automaton has 2351 states and 5685 transitions. Word has length 28 [2022-02-10 03:56:58,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:56:58,100 INFO L470 AbstractCegarLoop]: Abstraction has 2351 states and 5685 transitions. [2022-02-10 03:56:58,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:56:58,101 INFO L276 IsEmpty]: Start isEmpty. Operand 2351 states and 5685 transitions. [2022-02-10 03:56:58,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:56:58,103 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:56:58,103 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:56:58,119 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2022-02-10 03:56:58,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:56:58,304 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:56:58,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:56:58,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1959416432, now seen corresponding path program 38 times [2022-02-10 03:56:58,304 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:56:58,304 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334824387] [2022-02-10 03:56:58,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:56:58,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:56:58,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:56:58,354 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:56:58,355 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:56:58,355 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334824387] [2022-02-10 03:56:58,355 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334824387] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:56:58,355 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287896254] [2022-02-10 03:56:58,356 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:56:58,358 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:56:58,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:56:58,359 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) [2022-02-10 03:56:58,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-02-10 03:56:58,383 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:56:58,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:56:58,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 03:56:58,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:56:58,486 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:56:58,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:56:58,584 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:56:58,584 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287896254] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:56:58,584 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:56:58,585 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-02-10 03:56:58,585 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34756942] [2022-02-10 03:56:58,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:56:58,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-10 03:56:58,585 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:56:58,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-10 03:56:58,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2022-02-10 03:56:58,585 INFO L87 Difference]: Start difference. First operand 2351 states and 5685 transitions. Second operand has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 18 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:00,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:57:00,053 INFO L93 Difference]: Finished difference Result 4596 states and 9981 transitions. [2022-02-10 03:57:00,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-02-10 03:57:00,053 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 18 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:57:00,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:57:00,060 INFO L225 Difference]: With dead ends: 4596 [2022-02-10 03:57:00,060 INFO L226 Difference]: Without dead ends: 4584 [2022-02-10 03:57:00,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3662 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2193, Invalid=7313, Unknown=0, NotChecked=0, Total=9506 [2022-02-10 03:57:00,062 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 592 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 03:57:00,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [592 Valid, 181 Invalid, 846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 03:57:00,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4584 states. [2022-02-10 03:57:00,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4584 to 2819. [2022-02-10 03:57:00,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2819 states, 2818 states have (on average 2.50638750887154) internal successors, (7063), 2818 states have internal predecessors, (7063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:00,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2819 states to 2819 states and 7063 transitions. [2022-02-10 03:57:00,108 INFO L78 Accepts]: Start accepts. Automaton has 2819 states and 7063 transitions. Word has length 28 [2022-02-10 03:57:00,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:57:00,108 INFO L470 AbstractCegarLoop]: Abstraction has 2819 states and 7063 transitions. [2022-02-10 03:57:00,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 18 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:00,108 INFO L276 IsEmpty]: Start isEmpty. Operand 2819 states and 7063 transitions. [2022-02-10 03:57:00,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:57:00,112 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:57:00,112 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:57:00,128 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2022-02-10 03:57:00,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2022-02-10 03:57:00,312 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:57:00,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:57:00,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1826518544, now seen corresponding path program 26 times [2022-02-10 03:57:00,313 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:57:00,313 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037930624] [2022-02-10 03:57:00,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:57:00,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:57:00,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:57:00,363 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:00,363 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:57:00,363 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037930624] [2022-02-10 03:57:00,363 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037930624] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:57:00,363 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778947661] [2022-02-10 03:57:00,363 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:57:00,363 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:57:00,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:57:00,364 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) [2022-02-10 03:57:00,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-02-10 03:57:00,390 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:57:00,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:57:00,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 03:57:00,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:57:00,501 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:00,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:57:00,558 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:00,558 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778947661] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:57:00,558 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:57:00,558 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-02-10 03:57:00,558 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023484498] [2022-02-10 03:57:00,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:57:00,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 03:57:00,558 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:57:00,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 03:57:00,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2022-02-10 03:57:00,559 INFO L87 Difference]: Start difference. First operand 2819 states and 7063 transitions. Second operand has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 18 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:01,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:57:01,100 INFO L93 Difference]: Finished difference Result 5268 states and 12577 transitions. [2022-02-10 03:57:01,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-02-10 03:57:01,100 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 18 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:57:01,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:57:01,109 INFO L225 Difference]: With dead ends: 5268 [2022-02-10 03:57:01,109 INFO L226 Difference]: Without dead ends: 5248 [2022-02-10 03:57:01,109 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 615 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=579, Invalid=1773, Unknown=0, NotChecked=0, Total=2352 [2022-02-10 03:57:01,110 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 370 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:57:01,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [370 Valid, 159 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 03:57:01,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5248 states. [2022-02-10 03:57:01,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5248 to 3799. [2022-02-10 03:57:01,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3799 states, 3798 states have (on average 2.528436018957346) internal successors, (9603), 3798 states have internal predecessors, (9603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:01,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3799 states to 3799 states and 9603 transitions. [2022-02-10 03:57:01,170 INFO L78 Accepts]: Start accepts. Automaton has 3799 states and 9603 transitions. Word has length 28 [2022-02-10 03:57:01,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:57:01,170 INFO L470 AbstractCegarLoop]: Abstraction has 3799 states and 9603 transitions. [2022-02-10 03:57:01,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 18 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:01,170 INFO L276 IsEmpty]: Start isEmpty. Operand 3799 states and 9603 transitions. [2022-02-10 03:57:01,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:57:01,175 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:57:01,175 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:57:01,191 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2022-02-10 03:57:01,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:57:01,375 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:57:01,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:57:01,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1886232332, now seen corresponding path program 39 times [2022-02-10 03:57:01,376 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:57:01,376 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026890293] [2022-02-10 03:57:01,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:57:01,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:57:01,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:57:01,407 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:01,407 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:57:01,407 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026890293] [2022-02-10 03:57:01,407 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026890293] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:57:01,407 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203482502] [2022-02-10 03:57:01,408 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:57:01,408 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:57:01,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:57:01,409 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) [2022-02-10 03:57:01,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-02-10 03:57:01,431 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-10 03:57:01,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:57:01,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-10 03:57:01,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:57:01,519 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:01,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:57:01,622 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:01,622 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203482502] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:57:01,622 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:57:01,622 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 14 [2022-02-10 03:57:01,622 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690811801] [2022-02-10 03:57:01,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:57:01,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-10 03:57:01,622 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:57:01,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-10 03:57:01,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2022-02-10 03:57:01,623 INFO L87 Difference]: Start difference. First operand 3799 states and 9603 transitions. Second operand has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:02,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:57:02,022 INFO L93 Difference]: Finished difference Result 6057 states and 13843 transitions. [2022-02-10 03:57:02,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-10 03:57:02,023 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:57:02,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:57:02,032 INFO L225 Difference]: With dead ends: 6057 [2022-02-10 03:57:02,032 INFO L226 Difference]: Without dead ends: 6057 [2022-02-10 03:57:02,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 47 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=464, Invalid=868, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 03:57:02,032 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 292 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:57:02,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [292 Valid, 100 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:57:02,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6057 states. [2022-02-10 03:57:02,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6057 to 3404. [2022-02-10 03:57:02,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3404 states, 3403 states have (on average 2.5019100793417572) internal successors, (8514), 3403 states have internal predecessors, (8514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:02,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3404 states to 3404 states and 8514 transitions. [2022-02-10 03:57:02,096 INFO L78 Accepts]: Start accepts. Automaton has 3404 states and 8514 transitions. Word has length 28 [2022-02-10 03:57:02,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:57:02,096 INFO L470 AbstractCegarLoop]: Abstraction has 3404 states and 8514 transitions. [2022-02-10 03:57:02,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:02,096 INFO L276 IsEmpty]: Start isEmpty. Operand 3404 states and 8514 transitions. [2022-02-10 03:57:02,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:57:02,100 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:57:02,100 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:57:02,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2022-02-10 03:57:02,301 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,SelfDestructingSolverStorable66 [2022-02-10 03:57:02,301 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:57:02,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:57:02,301 INFO L85 PathProgramCache]: Analyzing trace with hash -476253640, now seen corresponding path program 40 times [2022-02-10 03:57:02,301 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:57:02,301 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976350398] [2022-02-10 03:57:02,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:57:02,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:57:02,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:57:02,345 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:02,345 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:57:02,345 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976350398] [2022-02-10 03:57:02,345 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976350398] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:57:02,345 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780526169] [2022-02-10 03:57:02,346 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:57:02,346 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:57:02,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:57:02,347 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) [2022-02-10 03:57:02,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-02-10 03:57:02,367 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:57:02,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:57:02,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 03:57:02,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:57:02,465 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:02,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:57:02,569 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:02,570 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780526169] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:57:02,570 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:57:02,570 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 17 [2022-02-10 03:57:02,570 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548963352] [2022-02-10 03:57:02,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:57:02,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-10 03:57:02,570 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:57:02,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-10 03:57:02,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2022-02-10 03:57:02,570 INFO L87 Difference]: Start difference. First operand 3404 states and 8514 transitions. Second operand has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:03,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:57:03,600 INFO L93 Difference]: Finished difference Result 6016 states and 13540 transitions. [2022-02-10 03:57:03,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-02-10 03:57:03,600 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:57:03,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:57:03,609 INFO L225 Difference]: With dead ends: 6016 [2022-02-10 03:57:03,609 INFO L226 Difference]: Without dead ends: 6016 [2022-02-10 03:57:03,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1887 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1272, Invalid=4130, Unknown=0, NotChecked=0, Total=5402 [2022-02-10 03:57:03,610 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 386 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 839 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 03:57:03,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [386 Valid, 280 Invalid, 952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 839 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 03:57:03,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6016 states. [2022-02-10 03:57:03,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6016 to 3419. [2022-02-10 03:57:03,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3419 states, 3418 states have (on average 2.500292568753657) internal successors, (8546), 3418 states have internal predecessors, (8546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:03,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3419 states to 3419 states and 8546 transitions. [2022-02-10 03:57:03,694 INFO L78 Accepts]: Start accepts. Automaton has 3419 states and 8546 transitions. Word has length 28 [2022-02-10 03:57:03,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:57:03,694 INFO L470 AbstractCegarLoop]: Abstraction has 3419 states and 8546 transitions. [2022-02-10 03:57:03,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:03,694 INFO L276 IsEmpty]: Start isEmpty. Operand 3419 states and 8546 transitions. [2022-02-10 03:57:03,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:57:03,699 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:57:03,699 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:57:03,715 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2022-02-10 03:57:03,907 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,SelfDestructingSolverStorable67 [2022-02-10 03:57:03,907 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:57:03,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:57:03,908 INFO L85 PathProgramCache]: Analyzing trace with hash -65114252, now seen corresponding path program 41 times [2022-02-10 03:57:03,908 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:57:03,908 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030021985] [2022-02-10 03:57:03,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:57:03,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:57:03,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:57:03,969 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:03,969 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:57:03,969 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030021985] [2022-02-10 03:57:03,969 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030021985] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:57:03,969 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041034352] [2022-02-10 03:57:03,969 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 03:57:03,969 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:57:03,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:57:03,978 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) [2022-02-10 03:57:03,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-02-10 03:57:03,999 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 03:57:03,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:57:03,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 03:57:04,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:57:04,083 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:04,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:57:04,169 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:04,169 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041034352] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:57:04,170 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:57:04,170 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2022-02-10 03:57:04,170 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453575753] [2022-02-10 03:57:04,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:57:04,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-10 03:57:04,170 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:57:04,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-10 03:57:04,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2022-02-10 03:57:04,170 INFO L87 Difference]: Start difference. First operand 3419 states and 8546 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:05,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:57:05,282 INFO L93 Difference]: Finished difference Result 7290 states and 15682 transitions. [2022-02-10 03:57:05,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-02-10 03:57:05,283 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:57:05,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:57:05,293 INFO L225 Difference]: With dead ends: 7290 [2022-02-10 03:57:05,293 INFO L226 Difference]: Without dead ends: 7274 [2022-02-10 03:57:05,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2800 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1614, Invalid=5526, Unknown=0, NotChecked=0, Total=7140 [2022-02-10 03:57:05,294 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 578 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:57:05,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [578 Valid, 215 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 03:57:05,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7274 states. [2022-02-10 03:57:05,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7274 to 3558. [2022-02-10 03:57:05,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3558 states, 3557 states have (on average 2.5021085184143943) internal successors, (8900), 3557 states have internal predecessors, (8900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:05,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3558 states to 3558 states and 8900 transitions. [2022-02-10 03:57:05,365 INFO L78 Accepts]: Start accepts. Automaton has 3558 states and 8900 transitions. Word has length 28 [2022-02-10 03:57:05,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:57:05,365 INFO L470 AbstractCegarLoop]: Abstraction has 3558 states and 8900 transitions. [2022-02-10 03:57:05,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:05,366 INFO L276 IsEmpty]: Start isEmpty. Operand 3558 states and 8900 transitions. [2022-02-10 03:57:05,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:57:05,370 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:57:05,370 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:57:05,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2022-02-10 03:57:05,579 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,SelfDestructingSolverStorable68 [2022-02-10 03:57:05,579 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:57:05,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:57:05,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1377200012, now seen corresponding path program 42 times [2022-02-10 03:57:05,580 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:57:05,580 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737307263] [2022-02-10 03:57:05,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:57:05,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:57:05,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:57:05,619 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:05,619 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:57:05,619 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737307263] [2022-02-10 03:57:05,619 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737307263] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:57:05,619 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094654542] [2022-02-10 03:57:05,619 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 03:57:05,619 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:57:05,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:57:05,620 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) [2022-02-10 03:57:05,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-02-10 03:57:05,645 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 03:57:05,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:57:05,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 03:57:05,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:57:05,761 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:05,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:57:05,859 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:05,859 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094654542] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:57:05,859 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:57:05,859 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2022-02-10 03:57:05,859 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987413976] [2022-02-10 03:57:05,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:57:05,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-10 03:57:05,860 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:57:05,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-10 03:57:05,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-02-10 03:57:05,860 INFO L87 Difference]: Start difference. First operand 3558 states and 8900 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:07,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:57:07,074 INFO L93 Difference]: Finished difference Result 8770 states and 18688 transitions. [2022-02-10 03:57:07,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-02-10 03:57:07,074 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:57:07,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:57:07,089 INFO L225 Difference]: With dead ends: 8770 [2022-02-10 03:57:07,089 INFO L226 Difference]: Without dead ends: 8770 [2022-02-10 03:57:07,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 46 SyntacticMatches, 3 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2960 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1720, Invalid=5590, Unknown=0, NotChecked=0, Total=7310 [2022-02-10 03:57:07,090 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 544 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 03:57:07,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [544 Valid, 252 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 03:57:07,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8770 states. [2022-02-10 03:57:07,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8770 to 3832. [2022-02-10 03:57:07,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3832 states, 3831 states have (on average 2.5403288958496475) internal successors, (9732), 3831 states have internal predecessors, (9732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:07,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3832 states to 3832 states and 9732 transitions. [2022-02-10 03:57:07,200 INFO L78 Accepts]: Start accepts. Automaton has 3832 states and 9732 transitions. Word has length 28 [2022-02-10 03:57:07,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:57:07,201 INFO L470 AbstractCegarLoop]: Abstraction has 3832 states and 9732 transitions. [2022-02-10 03:57:07,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:07,201 INFO L276 IsEmpty]: Start isEmpty. Operand 3832 states and 9732 transitions. [2022-02-10 03:57:07,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:57:07,206 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:57:07,206 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:57:07,221 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2022-02-10 03:57:07,406 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,SelfDestructingSolverStorable69 [2022-02-10 03:57:07,407 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:57:07,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:57:07,407 INFO L85 PathProgramCache]: Analyzing trace with hash -705662024, now seen corresponding path program 43 times [2022-02-10 03:57:07,407 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:57:07,407 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796773243] [2022-02-10 03:57:07,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:57:07,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:57:07,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:57:07,450 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:07,450 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:57:07,450 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796773243] [2022-02-10 03:57:07,450 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796773243] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:57:07,450 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235411764] [2022-02-10 03:57:07,450 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 03:57:07,450 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:57:07,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:57:07,451 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) [2022-02-10 03:57:07,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-02-10 03:57:07,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:57:07,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 03:57:07,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:57:07,559 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:07,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:57:07,649 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:07,649 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235411764] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:57:07,649 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:57:07,649 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 17 [2022-02-10 03:57:07,649 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404814068] [2022-02-10 03:57:07,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:57:07,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-10 03:57:07,649 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:57:07,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-10 03:57:07,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-02-10 03:57:07,650 INFO L87 Difference]: Start difference. First operand 3832 states and 9732 transitions. Second operand has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:08,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:57:08,532 INFO L93 Difference]: Finished difference Result 6643 states and 15023 transitions. [2022-02-10 03:57:08,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-02-10 03:57:08,533 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:57:08,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:57:08,543 INFO L225 Difference]: With dead ends: 6643 [2022-02-10 03:57:08,544 INFO L226 Difference]: Without dead ends: 6642 [2022-02-10 03:57:08,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1604 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1062, Invalid=3768, Unknown=0, NotChecked=0, Total=4830 [2022-02-10 03:57:08,546 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 372 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 895 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 03:57:08,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [372 Valid, 271 Invalid, 990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 895 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 03:57:08,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6642 states. [2022-02-10 03:57:08,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6642 to 3837. [2022-02-10 03:57:08,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3837 states, 3836 states have (on average 2.5417101147028154) internal successors, (9750), 3836 states have internal predecessors, (9750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:08,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3837 states to 3837 states and 9750 transitions. [2022-02-10 03:57:08,639 INFO L78 Accepts]: Start accepts. Automaton has 3837 states and 9750 transitions. Word has length 28 [2022-02-10 03:57:08,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:57:08,639 INFO L470 AbstractCegarLoop]: Abstraction has 3837 states and 9750 transitions. [2022-02-10 03:57:08,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:08,639 INFO L276 IsEmpty]: Start isEmpty. Operand 3837 states and 9750 transitions. [2022-02-10 03:57:08,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:57:08,645 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:57:08,645 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:57:08,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2022-02-10 03:57:08,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:57:08,860 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:57:08,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:57:08,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1780386436, now seen corresponding path program 44 times [2022-02-10 03:57:08,860 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:57:08,860 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281090051] [2022-02-10 03:57:08,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:57:08,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:57:08,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:57:08,898 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:08,899 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:57:08,899 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281090051] [2022-02-10 03:57:08,899 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281090051] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:57:08,899 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418134585] [2022-02-10 03:57:08,899 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:57:08,899 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:57:08,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:57:08,900 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) [2022-02-10 03:57:08,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-02-10 03:57:08,923 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:57:08,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:57:08,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 03:57:08,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:57:09,023 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:09,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:57:09,119 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:09,120 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418134585] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:57:09,120 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:57:09,120 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 19 [2022-02-10 03:57:09,120 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103403191] [2022-02-10 03:57:09,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:57:09,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 03:57:09,120 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:57:09,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 03:57:09,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2022-02-10 03:57:09,121 INFO L87 Difference]: Start difference. First operand 3837 states and 9750 transitions. Second operand has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:10,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:57:10,542 INFO L93 Difference]: Finished difference Result 9569 states and 21576 transitions. [2022-02-10 03:57:10,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-02-10 03:57:10,544 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:57:10,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:57:10,561 INFO L225 Difference]: With dead ends: 9569 [2022-02-10 03:57:10,561 INFO L226 Difference]: Without dead ends: 9568 [2022-02-10 03:57:10,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3624 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2169, Invalid=7337, Unknown=0, NotChecked=0, Total=9506 [2022-02-10 03:57:10,563 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 570 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 1213 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 570 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 1312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 03:57:10,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [570 Valid, 396 Invalid, 1312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1213 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 03:57:10,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9568 states. [2022-02-10 03:57:10,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9568 to 4203. [2022-02-10 03:57:10,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4203 states, 4202 states have (on average 2.566872917658258) internal successors, (10786), 4202 states have internal predecessors, (10786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:10,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4203 states to 4203 states and 10786 transitions. [2022-02-10 03:57:10,683 INFO L78 Accepts]: Start accepts. Automaton has 4203 states and 10786 transitions. Word has length 28 [2022-02-10 03:57:10,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:57:10,683 INFO L470 AbstractCegarLoop]: Abstraction has 4203 states and 10786 transitions. [2022-02-10 03:57:10,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:10,683 INFO L276 IsEmpty]: Start isEmpty. Operand 4203 states and 10786 transitions. [2022-02-10 03:57:10,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:57:10,688 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:57:10,689 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:57:10,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2022-02-10 03:57:10,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:57:10,896 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:57:10,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:57:10,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1717145810, now seen corresponding path program 45 times [2022-02-10 03:57:10,897 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:57:10,897 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673985162] [2022-02-10 03:57:10,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:57:10,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:57:10,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:57:10,942 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:10,942 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:57:10,942 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673985162] [2022-02-10 03:57:10,942 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673985162] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:57:10,942 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049215655] [2022-02-10 03:57:10,942 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:57:10,942 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:57:10,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:57:10,943 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) [2022-02-10 03:57:10,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-02-10 03:57:10,967 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-10 03:57:10,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:57:10,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 03:57:10,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:57:11,081 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:11,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:57:11,187 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:11,187 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049215655] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:57:11,187 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:57:11,187 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 19 [2022-02-10 03:57:11,187 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441456255] [2022-02-10 03:57:11,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:57:11,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 03:57:11,187 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:57:11,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 03:57:11,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2022-02-10 03:57:11,188 INFO L87 Difference]: Start difference. First operand 4203 states and 10786 transitions. Second operand has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:12,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:57:12,865 INFO L93 Difference]: Finished difference Result 7976 states and 18093 transitions. [2022-02-10 03:57:12,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2022-02-10 03:57:12,865 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:57:12,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:57:12,877 INFO L225 Difference]: With dead ends: 7976 [2022-02-10 03:57:12,878 INFO L226 Difference]: Without dead ends: 7976 [2022-02-10 03:57:12,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6071 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2823, Invalid=11939, Unknown=0, NotChecked=0, Total=14762 [2022-02-10 03:57:12,880 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 517 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 1145 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 1264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 03:57:12,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [517 Valid, 403 Invalid, 1264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 1145 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 03:57:12,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7976 states. [2022-02-10 03:57:12,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7976 to 4213. [2022-02-10 03:57:12,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4213 states, 4212 states have (on average 2.5641025641025643) internal successors, (10800), 4212 states have internal predecessors, (10800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:12,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4213 states to 4213 states and 10800 transitions. [2022-02-10 03:57:12,979 INFO L78 Accepts]: Start accepts. Automaton has 4213 states and 10800 transitions. Word has length 28 [2022-02-10 03:57:12,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:57:12,979 INFO L470 AbstractCegarLoop]: Abstraction has 4213 states and 10800 transitions. [2022-02-10 03:57:12,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:12,979 INFO L276 IsEmpty]: Start isEmpty. Operand 4213 states and 10800 transitions. [2022-02-10 03:57:12,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:57:12,984 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:57:12,984 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:57:13,001 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2022-02-10 03:57:13,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:57:13,185 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:57:13,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:57:13,185 INFO L85 PathProgramCache]: Analyzing trace with hash 2009710520, now seen corresponding path program 27 times [2022-02-10 03:57:13,185 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:57:13,185 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019615364] [2022-02-10 03:57:13,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:57:13,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:57:13,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:57:13,232 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:13,232 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:57:13,232 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019615364] [2022-02-10 03:57:13,232 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019615364] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:57:13,232 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311787347] [2022-02-10 03:57:13,232 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:57:13,233 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:57:13,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:57:13,233 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) [2022-02-10 03:57:13,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-02-10 03:57:13,257 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-10 03:57:13,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:57:13,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 03:57:13,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:57:13,349 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:13,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:57:13,433 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:13,433 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311787347] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:57:13,433 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:57:13,433 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 17 [2022-02-10 03:57:13,433 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002499398] [2022-02-10 03:57:13,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:57:13,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-10 03:57:13,434 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:57:13,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-10 03:57:13,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2022-02-10 03:57:13,434 INFO L87 Difference]: Start difference. First operand 4213 states and 10800 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:14,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:57:14,260 INFO L93 Difference]: Finished difference Result 7868 states and 18562 transitions. [2022-02-10 03:57:14,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-02-10 03:57:14,260 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:57:14,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:57:14,273 INFO L225 Difference]: With dead ends: 7868 [2022-02-10 03:57:14,273 INFO L226 Difference]: Without dead ends: 7868 [2022-02-10 03:57:14,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1595 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=974, Invalid=3856, Unknown=0, NotChecked=0, Total=4830 [2022-02-10 03:57:14,274 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 358 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:57:14,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [358 Valid, 236 Invalid, 803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 03:57:14,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7868 states. [2022-02-10 03:57:14,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7868 to 4221. [2022-02-10 03:57:14,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4221 states, 4220 states have (on average 2.5627962085308056) internal successors, (10815), 4220 states have internal predecessors, (10815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:14,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4221 states to 4221 states and 10815 transitions. [2022-02-10 03:57:14,359 INFO L78 Accepts]: Start accepts. Automaton has 4221 states and 10815 transitions. Word has length 28 [2022-02-10 03:57:14,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:57:14,359 INFO L470 AbstractCegarLoop]: Abstraction has 4221 states and 10815 transitions. [2022-02-10 03:57:14,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:14,359 INFO L276 IsEmpty]: Start isEmpty. Operand 4221 states and 10815 transitions. [2022-02-10 03:57:14,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:57:14,365 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:57:14,365 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:57:14,380 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2022-02-10 03:57:14,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable73 [2022-02-10 03:57:14,566 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:57:14,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:57:14,567 INFO L85 PathProgramCache]: Analyzing trace with hash -922465864, now seen corresponding path program 28 times [2022-02-10 03:57:14,567 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:57:14,567 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135510917] [2022-02-10 03:57:14,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:57:14,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:57:14,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:57:14,606 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:14,606 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:57:14,606 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135510917] [2022-02-10 03:57:14,606 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135510917] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:57:14,606 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276114074] [2022-02-10 03:57:14,606 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:57:14,606 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:57:14,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:57:14,607 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) [2022-02-10 03:57:14,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-02-10 03:57:14,629 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:57:14,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:57:14,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 03:57:14,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:57:14,715 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:14,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:57:14,798 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:14,798 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276114074] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:57:14,798 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:57:14,798 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 17 [2022-02-10 03:57:14,798 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322299447] [2022-02-10 03:57:14,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:57:14,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-10 03:57:14,798 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:57:14,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-10 03:57:14,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2022-02-10 03:57:14,799 INFO L87 Difference]: Start difference. First operand 4221 states and 10815 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:15,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:57:15,816 INFO L93 Difference]: Finished difference Result 7941 states and 18650 transitions. [2022-02-10 03:57:15,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-02-10 03:57:15,816 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:57:15,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:57:15,829 INFO L225 Difference]: With dead ends: 7941 [2022-02-10 03:57:15,829 INFO L226 Difference]: Without dead ends: 7941 [2022-02-10 03:57:15,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2531 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1480, Invalid=5660, Unknown=0, NotChecked=0, Total=7140 [2022-02-10 03:57:15,830 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 378 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:57:15,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [378 Valid, 279 Invalid, 851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 733 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 03:57:15,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7941 states. [2022-02-10 03:57:15,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7941 to 4275. [2022-02-10 03:57:15,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4275 states, 4274 states have (on average 2.559429106223678) internal successors, (10939), 4274 states have internal predecessors, (10939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:15,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4275 states to 4275 states and 10939 transitions. [2022-02-10 03:57:15,931 INFO L78 Accepts]: Start accepts. Automaton has 4275 states and 10939 transitions. Word has length 28 [2022-02-10 03:57:15,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:57:15,931 INFO L470 AbstractCegarLoop]: Abstraction has 4275 states and 10939 transitions. [2022-02-10 03:57:15,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:15,932 INFO L276 IsEmpty]: Start isEmpty. Operand 4275 states and 10939 transitions. [2022-02-10 03:57:15,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:57:15,937 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:57:15,937 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:57:15,958 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2022-02-10 03:57:16,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:57:16,138 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:57:16,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:57:16,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1823412236, now seen corresponding path program 29 times [2022-02-10 03:57:16,138 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:57:16,138 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977702645] [2022-02-10 03:57:16,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:57:16,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:57:16,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:57:16,175 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:16,175 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:57:16,175 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977702645] [2022-02-10 03:57:16,175 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977702645] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:57:16,175 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879426370] [2022-02-10 03:57:16,175 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 03:57:16,175 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:57:16,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:57:16,176 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) [2022-02-10 03:57:16,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-02-10 03:57:16,198 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-10 03:57:16,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:57:16,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 03:57:16,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:57:16,302 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:16,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:57:16,348 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:16,348 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879426370] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:57:16,348 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:57:16,348 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 7] total 16 [2022-02-10 03:57:16,349 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036739049] [2022-02-10 03:57:16,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:57:16,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-10 03:57:16,349 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:57:16,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-10 03:57:16,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2022-02-10 03:57:16,349 INFO L87 Difference]: Start difference. First operand 4275 states and 10939 transitions. Second operand has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 16 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:16,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:57:16,833 INFO L93 Difference]: Finished difference Result 7196 states and 17625 transitions. [2022-02-10 03:57:16,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-10 03:57:16,834 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 16 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:57:16,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:57:16,844 INFO L225 Difference]: With dead ends: 7196 [2022-02-10 03:57:16,845 INFO L226 Difference]: Without dead ends: 7195 [2022-02-10 03:57:16,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 502 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=517, Invalid=1289, Unknown=0, NotChecked=0, Total=1806 [2022-02-10 03:57:16,845 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 256 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:57:16,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [256 Valid, 188 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 563 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 03:57:16,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7195 states. [2022-02-10 03:57:16,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7195 to 5520. [2022-02-10 03:57:16,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5520 states, 5519 states have (on average 2.596847254937489) internal successors, (14332), 5519 states have internal predecessors, (14332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:16,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5520 states to 5520 states and 14332 transitions. [2022-02-10 03:57:16,924 INFO L78 Accepts]: Start accepts. Automaton has 5520 states and 14332 transitions. Word has length 28 [2022-02-10 03:57:16,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:57:16,924 INFO L470 AbstractCegarLoop]: Abstraction has 5520 states and 14332 transitions. [2022-02-10 03:57:16,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 16 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:16,924 INFO L276 IsEmpty]: Start isEmpty. Operand 5520 states and 14332 transitions. [2022-02-10 03:57:16,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:57:16,930 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:57:16,930 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:57:16,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2022-02-10 03:57:17,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:57:17,131 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:57:17,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:57:17,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1151874248, now seen corresponding path program 30 times [2022-02-10 03:57:17,131 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:57:17,131 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714878148] [2022-02-10 03:57:17,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:57:17,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:57:17,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:57:17,174 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:17,175 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:57:17,175 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714878148] [2022-02-10 03:57:17,175 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714878148] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:57:17,175 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590900865] [2022-02-10 03:57:17,175 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 03:57:17,175 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:57:17,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:57:17,176 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) [2022-02-10 03:57:17,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-02-10 03:57:17,198 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-02-10 03:57:17,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:57:17,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 03:57:17,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:57:17,276 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:17,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:57:17,358 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:17,359 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590900865] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:57:17,359 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:57:17,359 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 17 [2022-02-10 03:57:17,359 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927455258] [2022-02-10 03:57:17,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:57:17,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-10 03:57:17,359 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:57:17,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-10 03:57:17,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2022-02-10 03:57:17,359 INFO L87 Difference]: Start difference. First operand 5520 states and 14332 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:18,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:57:18,279 INFO L93 Difference]: Finished difference Result 9162 states and 22424 transitions. [2022-02-10 03:57:18,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-02-10 03:57:18,279 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:57:18,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:57:18,294 INFO L225 Difference]: With dead ends: 9162 [2022-02-10 03:57:18,294 INFO L226 Difference]: Without dead ends: 9161 [2022-02-10 03:57:18,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2359 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1360, Invalid=5446, Unknown=0, NotChecked=0, Total=6806 [2022-02-10 03:57:18,296 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 364 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:57:18,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [364 Valid, 194 Invalid, 810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 709 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 03:57:18,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9161 states. [2022-02-10 03:57:18,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9161 to 5627. [2022-02-10 03:57:18,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5627 states, 5626 states have (on average 2.587273373622467) internal successors, (14556), 5626 states have internal predecessors, (14556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:18,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5627 states to 5627 states and 14556 transitions. [2022-02-10 03:57:18,400 INFO L78 Accepts]: Start accepts. Automaton has 5627 states and 14556 transitions. Word has length 28 [2022-02-10 03:57:18,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:57:18,401 INFO L470 AbstractCegarLoop]: Abstraction has 5627 states and 14556 transitions. [2022-02-10 03:57:18,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:18,401 INFO L276 IsEmpty]: Start isEmpty. Operand 5627 states and 14556 transitions. [2022-02-10 03:57:18,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:57:18,408 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:57:18,408 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:57:18,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2022-02-10 03:57:18,608 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,SelfDestructingSolverStorable76 [2022-02-10 03:57:18,609 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:57:18,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:57:18,609 INFO L85 PathProgramCache]: Analyzing trace with hash -58592460, now seen corresponding path program 46 times [2022-02-10 03:57:18,609 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:57:18,609 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496273231] [2022-02-10 03:57:18,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:57:18,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:57:18,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:57:18,645 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:18,645 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:57:18,645 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496273231] [2022-02-10 03:57:18,645 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496273231] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:57:18,645 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954505020] [2022-02-10 03:57:18,645 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:57:18,645 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:57:18,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:57:18,646 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) [2022-02-10 03:57:18,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-02-10 03:57:18,667 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:57:18,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:57:18,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 03:57:18,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:57:18,741 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:18,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:57:18,821 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:18,822 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954505020] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:57:18,822 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:57:18,822 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2022-02-10 03:57:18,822 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550825723] [2022-02-10 03:57:18,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:57:18,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-10 03:57:18,822 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:57:18,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-10 03:57:18,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2022-02-10 03:57:18,822 INFO L87 Difference]: Start difference. First operand 5627 states and 14556 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:19,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:57:19,474 INFO L93 Difference]: Finished difference Result 11950 states and 29181 transitions. [2022-02-10 03:57:19,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-02-10 03:57:19,474 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:57:19,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:57:19,498 INFO L225 Difference]: With dead ends: 11950 [2022-02-10 03:57:19,498 INFO L226 Difference]: Without dead ends: 11907 [2022-02-10 03:57:19,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 815 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=652, Invalid=2000, Unknown=0, NotChecked=0, Total=2652 [2022-02-10 03:57:19,499 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 300 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:57:19,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 223 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 03:57:19,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11907 states. [2022-02-10 03:57:19,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11907 to 9292. [2022-02-10 03:57:19,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9292 states, 9291 states have (on average 2.658594338607254) internal successors, (24701), 9291 states have internal predecessors, (24701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:19,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9292 states to 9292 states and 24701 transitions. [2022-02-10 03:57:19,670 INFO L78 Accepts]: Start accepts. Automaton has 9292 states and 24701 transitions. Word has length 28 [2022-02-10 03:57:19,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:57:19,670 INFO L470 AbstractCegarLoop]: Abstraction has 9292 states and 24701 transitions. [2022-02-10 03:57:19,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:19,670 INFO L276 IsEmpty]: Start isEmpty. Operand 9292 states and 24701 transitions. [2022-02-10 03:57:19,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:57:19,682 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:57:19,682 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:57:19,698 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2022-02-10 03:57:19,883 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,SelfDestructingSolverStorable77 [2022-02-10 03:57:19,884 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:57:19,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:57:19,884 INFO L85 PathProgramCache]: Analyzing trace with hash 716430712, now seen corresponding path program 47 times [2022-02-10 03:57:19,884 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:57:19,884 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522727208] [2022-02-10 03:57:19,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:57:19,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:57:19,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:57:19,915 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:57:19,915 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:57:19,915 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522727208] [2022-02-10 03:57:19,915 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522727208] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:57:19,915 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604420505] [2022-02-10 03:57:19,915 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 03:57:19,915 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:57:19,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:57:19,916 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) [2022-02-10 03:57:19,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-02-10 03:57:19,941 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-10 03:57:19,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:57:19,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-10 03:57:19,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:57:20,016 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:57:20,016 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:57:20,095 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:57:20,095 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604420505] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:57:20,095 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:57:20,095 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 13 [2022-02-10 03:57:20,095 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927147689] [2022-02-10 03:57:20,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:57:20,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-10 03:57:20,096 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:57:20,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-10 03:57:20,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-02-10 03:57:20,096 INFO L87 Difference]: Start difference. First operand 9292 states and 24701 transitions. Second operand has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:20,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:57:20,400 INFO L93 Difference]: Finished difference Result 12934 states and 31877 transitions. [2022-02-10 03:57:20,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-10 03:57:20,401 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:57:20,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:57:20,423 INFO L225 Difference]: With dead ends: 12934 [2022-02-10 03:57:20,423 INFO L226 Difference]: Without dead ends: 12934 [2022-02-10 03:57:20,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 48 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=328, Invalid=602, Unknown=0, NotChecked=0, Total=930 [2022-02-10 03:57:20,423 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 228 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:57:20,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [228 Valid, 80 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:57:20,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12934 states. [2022-02-10 03:57:20,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12934 to 9594. [2022-02-10 03:57:20,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9594 states, 9593 states have (on average 2.6353591160220993) internal successors, (25281), 9593 states have internal predecessors, (25281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:20,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9594 states to 9594 states and 25281 transitions. [2022-02-10 03:57:20,604 INFO L78 Accepts]: Start accepts. Automaton has 9594 states and 25281 transitions. Word has length 28 [2022-02-10 03:57:20,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:57:20,604 INFO L470 AbstractCegarLoop]: Abstraction has 9594 states and 25281 transitions. [2022-02-10 03:57:20,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:20,604 INFO L276 IsEmpty]: Start isEmpty. Operand 9594 states and 25281 transitions. [2022-02-10 03:57:20,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:57:20,617 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:57:20,617 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:57:20,633 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2022-02-10 03:57:20,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:57:20,818 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:57:20,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:57:20,818 INFO L85 PathProgramCache]: Analyzing trace with hash 2035252732, now seen corresponding path program 48 times [2022-02-10 03:57:20,818 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:57:20,818 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066435238] [2022-02-10 03:57:20,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:57:20,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:57:20,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:57:20,860 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:20,860 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:57:20,860 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066435238] [2022-02-10 03:57:20,860 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066435238] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:57:20,860 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430061168] [2022-02-10 03:57:20,860 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 03:57:20,860 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:57:20,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:57:20,861 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) [2022-02-10 03:57:20,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-02-10 03:57:20,885 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-10 03:57:20,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:57:20,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 03:57:20,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:57:20,973 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:20,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:57:21,069 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:21,070 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430061168] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:57:21,070 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:57:21,070 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 15 [2022-02-10 03:57:21,070 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360002343] [2022-02-10 03:57:21,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:57:21,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-10 03:57:21,070 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:57:21,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-10 03:57:21,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2022-02-10 03:57:21,070 INFO L87 Difference]: Start difference. First operand 9594 states and 25281 transitions. Second operand has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:21,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:57:21,731 INFO L93 Difference]: Finished difference Result 13882 states and 34767 transitions. [2022-02-10 03:57:21,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-02-10 03:57:21,731 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:57:21,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:57:21,758 INFO L225 Difference]: With dead ends: 13882 [2022-02-10 03:57:21,758 INFO L226 Difference]: Without dead ends: 13882 [2022-02-10 03:57:21,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 842 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=653, Invalid=2103, Unknown=0, NotChecked=0, Total=2756 [2022-02-10 03:57:21,759 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 370 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:57:21,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [370 Valid, 190 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 563 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 03:57:21,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13882 states. [2022-02-10 03:57:21,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13882 to 10692. [2022-02-10 03:57:21,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10692 states, 10691 states have (on average 2.6262276681320738) internal successors, (28077), 10691 states have internal predecessors, (28077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:21,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10692 states to 10692 states and 28077 transitions. [2022-02-10 03:57:21,950 INFO L78 Accepts]: Start accepts. Automaton has 10692 states and 28077 transitions. Word has length 28 [2022-02-10 03:57:21,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:57:21,950 INFO L470 AbstractCegarLoop]: Abstraction has 10692 states and 28077 transitions. [2022-02-10 03:57:21,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:21,950 INFO L276 IsEmpty]: Start isEmpty. Operand 10692 states and 28077 transitions. [2022-02-10 03:57:21,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:57:21,963 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:57:21,963 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:57:21,979 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2022-02-10 03:57:22,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:57:22,163 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:57:22,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:57:22,164 INFO L85 PathProgramCache]: Analyzing trace with hash -410721028, now seen corresponding path program 49 times [2022-02-10 03:57:22,164 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:57:22,164 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490156372] [2022-02-10 03:57:22,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:57:22,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:57:22,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:57:22,196 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:22,196 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:57:22,197 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490156372] [2022-02-10 03:57:22,197 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490156372] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:57:22,197 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90197667] [2022-02-10 03:57:22,197 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 03:57:22,197 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:57:22,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:57:22,198 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) [2022-02-10 03:57:22,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-02-10 03:57:22,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:57:22,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 03:57:22,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:57:22,293 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:22,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:57:22,361 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:22,361 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90197667] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:57:22,361 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:57:22,362 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2022-02-10 03:57:22,362 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223510816] [2022-02-10 03:57:22,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:57:22,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-10 03:57:22,362 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:57:22,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-10 03:57:22,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-02-10 03:57:22,362 INFO L87 Difference]: Start difference. First operand 10692 states and 28077 transitions. Second operand has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:22,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:57:22,778 INFO L93 Difference]: Finished difference Result 14091 states and 35049 transitions. [2022-02-10 03:57:22,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-02-10 03:57:22,779 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:57:22,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:57:22,801 INFO L225 Difference]: With dead ends: 14091 [2022-02-10 03:57:22,801 INFO L226 Difference]: Without dead ends: 14078 [2022-02-10 03:57:22,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=376, Invalid=956, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 03:57:22,802 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 243 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:57:22,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [243 Valid, 178 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 03:57:22,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14078 states. [2022-02-10 03:57:22,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14078 to 11295. [2022-02-10 03:57:22,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11295 states, 11294 states have (on average 2.6299805206304234) internal successors, (29703), 11294 states have internal predecessors, (29703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:22,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11295 states to 11295 states and 29703 transitions. [2022-02-10 03:57:22,990 INFO L78 Accepts]: Start accepts. Automaton has 11295 states and 29703 transitions. Word has length 28 [2022-02-10 03:57:22,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:57:22,990 INFO L470 AbstractCegarLoop]: Abstraction has 11295 states and 29703 transitions. [2022-02-10 03:57:22,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:22,990 INFO L276 IsEmpty]: Start isEmpty. Operand 11295 states and 29703 transitions. [2022-02-10 03:57:23,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:57:23,004 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:57:23,004 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:57:23,021 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2022-02-10 03:57:23,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:57:23,205 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:57:23,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:57:23,205 INFO L85 PathProgramCache]: Analyzing trace with hash 735886080, now seen corresponding path program 50 times [2022-02-10 03:57:23,205 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:57:23,205 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801746682] [2022-02-10 03:57:23,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:57:23,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:57:23,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:57:23,240 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:57:23,240 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:57:23,240 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801746682] [2022-02-10 03:57:23,241 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801746682] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:57:23,241 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410015044] [2022-02-10 03:57:23,241 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:57:23,241 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:57:23,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:57:23,242 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) [2022-02-10 03:57:23,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-02-10 03:57:23,262 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:57:23,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:57:23,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 03:57:23,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:57:23,336 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:57:23,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:57:23,405 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:57:23,406 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410015044] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:57:23,406 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:57:23,406 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2022-02-10 03:57:23,406 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111911847] [2022-02-10 03:57:23,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:57:23,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-10 03:57:23,406 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:57:23,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-10 03:57:23,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-02-10 03:57:23,406 INFO L87 Difference]: Start difference. First operand 11295 states and 29703 transitions. Second operand has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:23,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:57:23,880 INFO L93 Difference]: Finished difference Result 13873 states and 34236 transitions. [2022-02-10 03:57:23,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-02-10 03:57:23,880 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:57:23,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:57:23,910 INFO L225 Difference]: With dead ends: 13873 [2022-02-10 03:57:23,910 INFO L226 Difference]: Without dead ends: 13873 [2022-02-10 03:57:23,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 49 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=376, Invalid=956, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 03:57:23,911 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 235 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:57:23,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 269 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 03:57:23,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13873 states. [2022-02-10 03:57:24,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13873 to 11314. [2022-02-10 03:57:24,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11314 states, 11313 states have (on average 2.62291169451074) internal successors, (29673), 11313 states have internal predecessors, (29673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:24,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11314 states to 11314 states and 29673 transitions. [2022-02-10 03:57:24,119 INFO L78 Accepts]: Start accepts. Automaton has 11314 states and 29673 transitions. Word has length 28 [2022-02-10 03:57:24,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:57:24,119 INFO L470 AbstractCegarLoop]: Abstraction has 11314 states and 29673 transitions. [2022-02-10 03:57:24,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:24,120 INFO L276 IsEmpty]: Start isEmpty. Operand 11314 states and 29673 transitions. [2022-02-10 03:57:24,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:57:24,133 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:57:24,134 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:57:24,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2022-02-10 03:57:24,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:57:24,334 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:57:24,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:57:24,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1407424068, now seen corresponding path program 51 times [2022-02-10 03:57:24,335 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:57:24,335 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670389051] [2022-02-10 03:57:24,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:57:24,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:57:24,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:57:24,384 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:57:24,384 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:57:24,384 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670389051] [2022-02-10 03:57:24,384 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670389051] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:57:24,384 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123051565] [2022-02-10 03:57:24,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:57:24,384 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:57:24,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:57:24,385 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) [2022-02-10 03:57:24,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-02-10 03:57:24,407 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-10 03:57:24,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:57:24,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 03:57:24,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:57:24,497 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:57:24,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:57:24,599 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:57:24,599 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123051565] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:57:24,599 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:57:24,599 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 15 [2022-02-10 03:57:24,599 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604543177] [2022-02-10 03:57:24,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:57:24,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-10 03:57:24,599 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:57:24,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-10 03:57:24,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2022-02-10 03:57:24,600 INFO L87 Difference]: Start difference. First operand 11314 states and 29673 transitions. Second operand has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:25,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:57:25,183 INFO L93 Difference]: Finished difference Result 14481 states and 36346 transitions. [2022-02-10 03:57:25,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-02-10 03:57:25,184 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:57:25,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:57:25,211 INFO L225 Difference]: With dead ends: 14481 [2022-02-10 03:57:25,212 INFO L226 Difference]: Without dead ends: 14480 [2022-02-10 03:57:25,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 633 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=537, Invalid=1719, Unknown=0, NotChecked=0, Total=2256 [2022-02-10 03:57:25,212 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 358 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:57:25,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [358 Valid, 142 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 03:57:25,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14480 states. [2022-02-10 03:57:25,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14480 to 11305. [2022-02-10 03:57:25,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11305 states, 11304 states have (on average 2.6232307147912244) internal successors, (29653), 11304 states have internal predecessors, (29653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:25,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11305 states to 11305 states and 29653 transitions. [2022-02-10 03:57:25,437 INFO L78 Accepts]: Start accepts. Automaton has 11305 states and 29653 transitions. Word has length 28 [2022-02-10 03:57:25,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:57:25,437 INFO L470 AbstractCegarLoop]: Abstraction has 11305 states and 29653 transitions. [2022-02-10 03:57:25,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:25,437 INFO L276 IsEmpty]: Start isEmpty. Operand 11305 states and 29653 transitions. [2022-02-10 03:57:25,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:57:25,451 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:57:25,451 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:57:25,467 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2022-02-10 03:57:25,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:57:25,653 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:57:25,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:57:25,653 INFO L85 PathProgramCache]: Analyzing trace with hash 2020104640, now seen corresponding path program 52 times [2022-02-10 03:57:25,653 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:57:25,653 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124533225] [2022-02-10 03:57:25,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:57:25,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:57:25,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:57:25,687 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:25,688 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:57:25,688 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124533225] [2022-02-10 03:57:25,688 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124533225] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:57:25,688 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213136768] [2022-02-10 03:57:25,688 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:57:25,688 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:57:25,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:57:25,689 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) [2022-02-10 03:57:25,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-02-10 03:57:25,713 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:57:25,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:57:25,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 03:57:25,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:57:25,789 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:25,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:57:25,855 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:25,855 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213136768] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:57:25,855 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:57:25,855 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2022-02-10 03:57:25,855 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485467977] [2022-02-10 03:57:25,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:57:25,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-10 03:57:25,855 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:57:25,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-10 03:57:25,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-02-10 03:57:25,856 INFO L87 Difference]: Start difference. First operand 11305 states and 29653 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:26,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:57:26,398 INFO L93 Difference]: Finished difference Result 14620 states and 36004 transitions. [2022-02-10 03:57:26,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-10 03:57:26,398 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:57:26,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:57:26,427 INFO L225 Difference]: With dead ends: 14620 [2022-02-10 03:57:26,427 INFO L226 Difference]: Without dead ends: 14620 [2022-02-10 03:57:26,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 48 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 537 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=516, Invalid=1290, Unknown=0, NotChecked=0, Total=1806 [2022-02-10 03:57:26,428 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 292 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:57:26,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [292 Valid, 292 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 03:57:26,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14620 states. [2022-02-10 03:57:26,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14620 to 11436. [2022-02-10 03:57:26,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11436 states, 11435 states have (on average 2.6262352426759947) internal successors, (30031), 11435 states have internal predecessors, (30031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:26,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11436 states to 11436 states and 30031 transitions. [2022-02-10 03:57:26,649 INFO L78 Accepts]: Start accepts. Automaton has 11436 states and 30031 transitions. Word has length 28 [2022-02-10 03:57:26,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:57:26,649 INFO L470 AbstractCegarLoop]: Abstraction has 11436 states and 30031 transitions. [2022-02-10 03:57:26,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:26,649 INFO L276 IsEmpty]: Start isEmpty. Operand 11436 states and 30031 transitions. [2022-02-10 03:57:26,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:57:26,663 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:57:26,663 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:57:26,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Forceful destruction successful, exit code 0 [2022-02-10 03:57:26,863 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,SelfDestructingSolverStorable83 [2022-02-10 03:57:26,864 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:57:26,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:57:26,864 INFO L85 PathProgramCache]: Analyzing trace with hash 102022580, now seen corresponding path program 53 times [2022-02-10 03:57:26,864 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:57:26,864 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782652737] [2022-02-10 03:57:26,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:57:26,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:57:26,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:57:26,906 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:26,906 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:57:26,906 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782652737] [2022-02-10 03:57:26,906 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782652737] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:57:26,906 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408217077] [2022-02-10 03:57:26,906 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 03:57:26,906 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:57:26,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:57:26,907 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) [2022-02-10 03:57:26,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-02-10 03:57:26,929 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-10 03:57:26,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:57:26,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 03:57:26,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:57:27,055 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:27,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:57:27,185 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:27,185 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408217077] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:57:27,185 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:57:27,185 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-02-10 03:57:27,185 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117400764] [2022-02-10 03:57:27,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:57:27,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 03:57:27,185 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:57:27,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 03:57:27,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2022-02-10 03:57:27,186 INFO L87 Difference]: Start difference. First operand 11436 states and 30031 transitions. Second operand has 20 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:29,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:57:29,233 INFO L93 Difference]: Finished difference Result 29287 states and 72545 transitions. [2022-02-10 03:57:29,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2022-02-10 03:57:29,234 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:57:29,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:57:29,302 INFO L225 Difference]: With dead ends: 29287 [2022-02-10 03:57:29,302 INFO L226 Difference]: Without dead ends: 29287 [2022-02-10 03:57:29,304 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7492 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=4085, Invalid=14275, Unknown=0, NotChecked=0, Total=18360 [2022-02-10 03:57:29,305 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 639 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 971 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 1111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 03:57:29,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [639 Valid, 259 Invalid, 1111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 971 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 03:57:29,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29287 states. [2022-02-10 03:57:29,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29287 to 15192. [2022-02-10 03:57:29,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15192 states, 15191 states have (on average 2.6963991837272068) internal successors, (40961), 15191 states have internal predecessors, (40961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:29,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15192 states to 15192 states and 40961 transitions. [2022-02-10 03:57:29,710 INFO L78 Accepts]: Start accepts. Automaton has 15192 states and 40961 transitions. Word has length 28 [2022-02-10 03:57:29,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:57:29,711 INFO L470 AbstractCegarLoop]: Abstraction has 15192 states and 40961 transitions. [2022-02-10 03:57:29,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:29,711 INFO L276 IsEmpty]: Start isEmpty. Operand 15192 states and 40961 transitions. [2022-02-10 03:57:29,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:57:29,730 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:57:29,730 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:57:29,746 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Ended with exit code 0 [2022-02-10 03:57:29,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:57:29,931 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:57:29,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:57:29,931 INFO L85 PathProgramCache]: Analyzing trace with hash 904633852, now seen corresponding path program 54 times [2022-02-10 03:57:29,931 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:57:29,931 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120984178] [2022-02-10 03:57:29,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:57:29,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:57:29,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:57:29,977 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:29,977 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:57:29,977 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120984178] [2022-02-10 03:57:29,977 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120984178] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:57:29,979 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815542288] [2022-02-10 03:57:29,979 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 03:57:29,979 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:57:29,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:57:29,980 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) [2022-02-10 03:57:29,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-02-10 03:57:30,002 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-10 03:57:30,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:57:30,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 03:57:30,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:57:30,093 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:30,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:57:30,186 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:30,186 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815542288] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:57:30,186 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:57:30,186 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-02-10 03:57:30,186 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887393332] [2022-02-10 03:57:30,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:57:30,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-10 03:57:30,187 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:57:30,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-10 03:57:30,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2022-02-10 03:57:30,187 INFO L87 Difference]: Start difference. First operand 15192 states and 40961 transitions. Second operand has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:31,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:57:31,341 INFO L93 Difference]: Finished difference Result 28668 states and 71055 transitions. [2022-02-10 03:57:31,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-02-10 03:57:31,341 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:57:31,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:57:31,398 INFO L225 Difference]: With dead ends: 28668 [2022-02-10 03:57:31,398 INFO L226 Difference]: Without dead ends: 28665 [2022-02-10 03:57:31,399 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2742 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1873, Invalid=5783, Unknown=0, NotChecked=0, Total=7656 [2022-02-10 03:57:31,399 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 469 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 03:57:31,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [469 Valid, 291 Invalid, 966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 872 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 03:57:31,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28665 states. [2022-02-10 03:57:31,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28665 to 15217. [2022-02-10 03:57:31,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15217 states, 15216 states have (on average 2.6945320715036805) internal successors, (41000), 15216 states have internal predecessors, (41000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:31,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15217 states to 15217 states and 41000 transitions. [2022-02-10 03:57:31,816 INFO L78 Accepts]: Start accepts. Automaton has 15217 states and 41000 transitions. Word has length 28 [2022-02-10 03:57:31,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:57:31,816 INFO L470 AbstractCegarLoop]: Abstraction has 15217 states and 41000 transitions. [2022-02-10 03:57:31,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:31,816 INFO L276 IsEmpty]: Start isEmpty. Operand 15217 states and 41000 transitions. [2022-02-10 03:57:31,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:57:31,835 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:57:31,835 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:57:31,851 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Ended with exit code 0 [2022-02-10 03:57:32,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:57:32,036 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:57:32,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:57:32,036 INFO L85 PathProgramCache]: Analyzing trace with hash 314016440, now seen corresponding path program 31 times [2022-02-10 03:57:32,036 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:57:32,036 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595116303] [2022-02-10 03:57:32,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:57:32,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:57:32,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:57:32,080 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:32,081 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:57:32,081 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595116303] [2022-02-10 03:57:32,081 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595116303] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:57:32,081 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820979416] [2022-02-10 03:57:32,081 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 03:57:32,081 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:57:32,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:57:32,082 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) [2022-02-10 03:57:32,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-02-10 03:57:32,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:57:32,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 03:57:32,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:57:32,175 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:32,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:57:32,244 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:32,244 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820979416] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:57:32,244 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:57:32,244 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2022-02-10 03:57:32,244 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758420765] [2022-02-10 03:57:32,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:57:32,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-10 03:57:32,244 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:57:32,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-10 03:57:32,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2022-02-10 03:57:32,245 INFO L87 Difference]: Start difference. First operand 15217 states and 41000 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:32,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:57:32,758 INFO L93 Difference]: Finished difference Result 18745 states and 49587 transitions. [2022-02-10 03:57:32,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-02-10 03:57:32,759 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:57:32,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:57:32,796 INFO L225 Difference]: With dead ends: 18745 [2022-02-10 03:57:32,796 INFO L226 Difference]: Without dead ends: 18743 [2022-02-10 03:57:32,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 682 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=534, Invalid=1818, Unknown=0, NotChecked=0, Total=2352 [2022-02-10 03:57:32,797 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 183 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:57:32,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 109 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 03:57:32,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18743 states. [2022-02-10 03:57:33,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18743 to 15251. [2022-02-10 03:57:33,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15251 states, 15250 states have (on average 2.6917377049180327) internal successors, (41049), 15250 states have internal predecessors, (41049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:33,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15251 states to 15251 states and 41049 transitions. [2022-02-10 03:57:33,072 INFO L78 Accepts]: Start accepts. Automaton has 15251 states and 41049 transitions. Word has length 28 [2022-02-10 03:57:33,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:57:33,072 INFO L470 AbstractCegarLoop]: Abstraction has 15251 states and 41049 transitions. [2022-02-10 03:57:33,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:33,073 INFO L276 IsEmpty]: Start isEmpty. Operand 15251 states and 41049 transitions. [2022-02-10 03:57:33,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:57:33,091 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:57:33,091 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:57:33,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2022-02-10 03:57:33,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:57:33,292 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:57:33,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:57:33,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1087575676, now seen corresponding path program 32 times [2022-02-10 03:57:33,292 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:57:33,292 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326682505] [2022-02-10 03:57:33,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:57:33,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:57:33,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:57:33,330 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:33,330 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:57:33,330 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326682505] [2022-02-10 03:57:33,330 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326682505] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:57:33,330 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502846937] [2022-02-10 03:57:33,330 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:57:33,330 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:57:33,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:57:33,331 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) [2022-02-10 03:57:33,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2022-02-10 03:57:33,351 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:57:33,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:57:33,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 03:57:33,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:57:33,421 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:33,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:57:33,488 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:33,488 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502846937] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:57:33,488 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:57:33,488 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2022-02-10 03:57:33,488 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56613816] [2022-02-10 03:57:33,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:57:33,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-10 03:57:33,489 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:57:33,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-10 03:57:33,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-02-10 03:57:33,489 INFO L87 Difference]: Start difference. First operand 15251 states and 41049 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:34,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:57:34,102 INFO L93 Difference]: Finished difference Result 18836 states and 49728 transitions. [2022-02-10 03:57:34,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-02-10 03:57:34,102 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:57:34,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:57:34,140 INFO L225 Difference]: With dead ends: 18836 [2022-02-10 03:57:34,140 INFO L226 Difference]: Without dead ends: 18836 [2022-02-10 03:57:34,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1002 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=636, Invalid=2444, Unknown=0, NotChecked=0, Total=3080 [2022-02-10 03:57:34,140 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 267 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:57:34,141 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [267 Valid, 115 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 03:57:34,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18836 states. [2022-02-10 03:57:34,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18836 to 15505. [2022-02-10 03:57:34,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15505 states, 15504 states have (on average 2.681953044375645) internal successors, (41581), 15504 states have internal predecessors, (41581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:34,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15505 states to 15505 states and 41581 transitions. [2022-02-10 03:57:34,462 INFO L78 Accepts]: Start accepts. Automaton has 15505 states and 41581 transitions. Word has length 28 [2022-02-10 03:57:34,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:57:34,462 INFO L470 AbstractCegarLoop]: Abstraction has 15505 states and 41581 transitions. [2022-02-10 03:57:34,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:34,462 INFO L276 IsEmpty]: Start isEmpty. Operand 15505 states and 41581 transitions. [2022-02-10 03:57:34,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:57:34,482 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:57:34,483 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:57:34,498 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Ended with exit code 0 [2022-02-10 03:57:34,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:57:34,683 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:57:34,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:57:34,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1358398084, now seen corresponding path program 33 times [2022-02-10 03:57:34,683 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:57:34,683 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941658030] [2022-02-10 03:57:34,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:57:34,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:57:34,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:57:34,722 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:34,723 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:57:34,723 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941658030] [2022-02-10 03:57:34,723 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941658030] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:57:34,723 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250163597] [2022-02-10 03:57:34,723 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:57:34,723 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:57:34,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:57:34,725 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) [2022-02-10 03:57:34,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2022-02-10 03:57:34,745 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-10 03:57:34,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:57:34,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 03:57:34,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:57:34,854 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:34,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:57:34,900 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:57:34,900 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250163597] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:57:34,900 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:57:34,900 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 7] total 16 [2022-02-10 03:57:34,901 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593797653] [2022-02-10 03:57:34,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:57:34,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-10 03:57:34,901 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:57:34,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-10 03:57:34,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-02-10 03:57:34,901 INFO L87 Difference]: Start difference. First operand 15505 states and 41581 transitions. Second operand has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 16 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:35,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:57:35,387 INFO L93 Difference]: Finished difference Result 21770 states and 57681 transitions. [2022-02-10 03:57:35,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-10 03:57:35,388 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 16 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:57:35,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:57:35,437 INFO L225 Difference]: With dead ends: 21770 [2022-02-10 03:57:35,437 INFO L226 Difference]: Without dead ends: 21761 [2022-02-10 03:57:35,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=392, Invalid=1168, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 03:57:35,438 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 239 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:57:35,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [239 Valid, 171 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 03:57:35,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21761 states. [2022-02-10 03:57:35,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21761 to 20580. [2022-02-10 03:57:35,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20580 states, 20579 states have (on average 2.702852422372321) internal successors, (55622), 20579 states have internal predecessors, (55622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:35,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20580 states to 20580 states and 55622 transitions. [2022-02-10 03:57:35,834 INFO L78 Accepts]: Start accepts. Automaton has 20580 states and 55622 transitions. Word has length 28 [2022-02-10 03:57:35,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:57:35,834 INFO L470 AbstractCegarLoop]: Abstraction has 20580 states and 55622 transitions. [2022-02-10 03:57:35,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 16 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:35,834 INFO L276 IsEmpty]: Start isEmpty. Operand 20580 states and 55622 transitions. [2022-02-10 03:57:35,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:57:35,861 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:57:35,861 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:57:35,883 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Ended with exit code 0 [2022-02-10 03:57:36,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:57:36,061 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:57:36,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:57:36,062 INFO L85 PathProgramCache]: Analyzing trace with hash 459747012, now seen corresponding path program 34 times [2022-02-10 03:57:36,062 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:57:36,062 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105441318] [2022-02-10 03:57:36,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:57:36,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:57:36,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:57:36,107 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:57:36,107 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:57:36,107 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105441318] [2022-02-10 03:57:36,107 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105441318] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:57:36,107 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236866614] [2022-02-10 03:57:36,107 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:57:36,107 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:57:36,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:57:36,108 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) [2022-02-10 03:57:36,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2022-02-10 03:57:36,132 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:57:36,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:57:36,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 03:57:36,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:57:36,206 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:57:36,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:57:36,276 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:57:36,277 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236866614] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:57:36,277 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:57:36,277 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2022-02-10 03:57:36,277 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68202107] [2022-02-10 03:57:36,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:57:36,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-10 03:57:36,277 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:57:36,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-10 03:57:36,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-02-10 03:57:36,278 INFO L87 Difference]: Start difference. First operand 20580 states and 55622 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:36,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:57:36,778 INFO L93 Difference]: Finished difference Result 24738 states and 66091 transitions. [2022-02-10 03:57:36,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-10 03:57:36,779 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:57:36,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:57:36,835 INFO L225 Difference]: With dead ends: 24738 [2022-02-10 03:57:36,835 INFO L226 Difference]: Without dead ends: 24736 [2022-02-10 03:57:36,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 508 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=414, Invalid=1478, Unknown=0, NotChecked=0, Total=1892 [2022-02-10 03:57:36,836 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 246 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:57:36,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [246 Valid, 99 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 03:57:36,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24736 states. [2022-02-10 03:57:37,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24736 to 20518. [2022-02-10 03:57:37,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20518 states, 20517 states have (on average 2.7037091192669496) internal successors, (55472), 20517 states have internal predecessors, (55472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:37,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20518 states to 20518 states and 55472 transitions. [2022-02-10 03:57:37,335 INFO L78 Accepts]: Start accepts. Automaton has 20518 states and 55472 transitions. Word has length 28 [2022-02-10 03:57:37,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:57:37,335 INFO L470 AbstractCegarLoop]: Abstraction has 20518 states and 55472 transitions. [2022-02-10 03:57:37,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:37,335 INFO L276 IsEmpty]: Start isEmpty. Operand 20518 states and 55472 transitions. [2022-02-10 03:57:37,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:57:37,360 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:57:37,360 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:57:37,376 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Ended with exit code 0 [2022-02-10 03:57:37,560 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,SelfDestructingSolverStorable89 [2022-02-10 03:57:37,561 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:57:37,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:57:37,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1818589124, now seen corresponding path program 55 times [2022-02-10 03:57:37,561 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:57:37,561 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152282437] [2022-02-10 03:57:37,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:57:37,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:57:37,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:57:37,602 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:37,602 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:57:37,602 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152282437] [2022-02-10 03:57:37,602 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152282437] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:57:37,602 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840580689] [2022-02-10 03:57:37,602 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 03:57:37,603 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:57:37,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:57:37,604 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) [2022-02-10 03:57:37,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2022-02-10 03:57:37,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:57:37,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 03:57:37,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:57:37,707 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:37,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:57:37,786 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:37,786 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840580689] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:57:37,786 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:57:37,786 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 16 [2022-02-10 03:57:37,787 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474182719] [2022-02-10 03:57:37,787 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:57:37,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-10 03:57:37,787 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:57:37,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-10 03:57:37,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-02-10 03:57:37,787 INFO L87 Difference]: Start difference. First operand 20518 states and 55472 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:38,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:57:38,416 INFO L93 Difference]: Finished difference Result 24625 states and 64806 transitions. [2022-02-10 03:57:38,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-02-10 03:57:38,417 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:57:38,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:57:38,466 INFO L225 Difference]: With dead ends: 24625 [2022-02-10 03:57:38,466 INFO L226 Difference]: Without dead ends: 24622 [2022-02-10 03:57:38,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 802 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=629, Invalid=2127, Unknown=0, NotChecked=0, Total=2756 [2022-02-10 03:57:38,467 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 277 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:57:38,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 221 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 03:57:38,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24622 states. [2022-02-10 03:57:38,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24622 to 20518. [2022-02-10 03:57:38,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20518 states, 20517 states have (on average 2.7036603791977383) internal successors, (55471), 20517 states have internal predecessors, (55471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:38,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20518 states to 20518 states and 55471 transitions. [2022-02-10 03:57:38,850 INFO L78 Accepts]: Start accepts. Automaton has 20518 states and 55471 transitions. Word has length 28 [2022-02-10 03:57:38,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:57:38,850 INFO L470 AbstractCegarLoop]: Abstraction has 20518 states and 55471 transitions. [2022-02-10 03:57:38,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:38,850 INFO L276 IsEmpty]: Start isEmpty. Operand 20518 states and 55471 transitions. [2022-02-10 03:57:38,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:57:38,874 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:57:38,875 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:57:38,890 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Ended with exit code 0 [2022-02-10 03:57:39,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,90 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:57:39,075 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:57:39,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:57:39,075 INFO L85 PathProgramCache]: Analyzing trace with hash 458369280, now seen corresponding path program 56 times [2022-02-10 03:57:39,075 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:57:39,075 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999607997] [2022-02-10 03:57:39,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:57:39,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:57:39,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:57:39,117 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:39,117 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:57:39,117 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999607997] [2022-02-10 03:57:39,117 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999607997] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:57:39,117 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501657733] [2022-02-10 03:57:39,117 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:57:39,117 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:57:39,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:57:39,118 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) [2022-02-10 03:57:39,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2022-02-10 03:57:39,139 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:57:39,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:57:39,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 03:57:39,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:57:39,224 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:39,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:57:39,306 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:39,307 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501657733] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:57:39,307 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:57:39,307 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 18 [2022-02-10 03:57:39,307 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318557045] [2022-02-10 03:57:39,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:57:39,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-10 03:57:39,307 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:57:39,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-10 03:57:39,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-02-10 03:57:39,307 INFO L87 Difference]: Start difference. First operand 20518 states and 55471 transitions. Second operand has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 18 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:40,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:57:40,704 INFO L93 Difference]: Finished difference Result 34248 states and 86037 transitions. [2022-02-10 03:57:40,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-02-10 03:57:40,704 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 18 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:57:40,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:57:40,789 INFO L225 Difference]: With dead ends: 34248 [2022-02-10 03:57:40,789 INFO L226 Difference]: Without dead ends: 34245 [2022-02-10 03:57:40,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3214 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1989, Invalid=6941, Unknown=0, NotChecked=0, Total=8930 [2022-02-10 03:57:40,790 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 483 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 977 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 1062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 03:57:40,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [483 Valid, 276 Invalid, 1062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 977 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 03:57:40,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34245 states. [2022-02-10 03:57:41,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34245 to 20681. [2022-02-10 03:57:41,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20681 states, 20680 states have (on average 2.6961315280464215) internal successors, (55756), 20680 states have internal predecessors, (55756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:41,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20681 states to 20681 states and 55756 transitions. [2022-02-10 03:57:41,385 INFO L78 Accepts]: Start accepts. Automaton has 20681 states and 55756 transitions. Word has length 28 [2022-02-10 03:57:41,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:57:41,386 INFO L470 AbstractCegarLoop]: Abstraction has 20681 states and 55756 transitions. [2022-02-10 03:57:41,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 18 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:41,386 INFO L276 IsEmpty]: Start isEmpty. Operand 20681 states and 55756 transitions. [2022-02-10 03:57:41,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:57:41,411 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:57:41,411 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:57:41,427 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Ended with exit code 0 [2022-02-10 03:57:41,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:57:41,612 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:57:41,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:57:41,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1314442386, now seen corresponding path program 57 times [2022-02-10 03:57:41,612 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:57:41,612 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648803577] [2022-02-10 03:57:41,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:57:41,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:57:41,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:57:41,660 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:41,660 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:57:41,660 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648803577] [2022-02-10 03:57:41,660 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648803577] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:57:41,660 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634131230] [2022-02-10 03:57:41,660 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:57:41,660 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:57:41,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:57:41,661 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) [2022-02-10 03:57:41,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2022-02-10 03:57:41,683 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-10 03:57:41,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:57:41,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 03:57:41,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:57:41,785 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:41,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:57:41,879 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:41,879 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634131230] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:57:41,880 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:57:41,880 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 20 [2022-02-10 03:57:41,880 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683216845] [2022-02-10 03:57:41,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:57:41,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 03:57:41,880 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:57:41,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 03:57:41,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2022-02-10 03:57:41,880 INFO L87 Difference]: Start difference. First operand 20681 states and 55756 transitions. Second operand has 20 states, 20 states have (on average 2.75) internal successors, (55), 20 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:43,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:57:43,567 INFO L93 Difference]: Finished difference Result 26540 states and 68418 transitions. [2022-02-10 03:57:43,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-02-10 03:57:43,568 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.75) internal successors, (55), 20 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:57:43,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:57:43,623 INFO L225 Difference]: With dead ends: 26540 [2022-02-10 03:57:43,624 INFO L226 Difference]: Without dead ends: 26540 [2022-02-10 03:57:43,626 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5565 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2559, Invalid=11247, Unknown=0, NotChecked=0, Total=13806 [2022-02-10 03:57:43,626 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 496 mSDsluCounter, 751 mSDsCounter, 0 mSdLazyCounter, 1062 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 1192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 03:57:43,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [496 Valid, 484 Invalid, 1192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1062 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 03:57:43,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26540 states. [2022-02-10 03:57:43,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26540 to 20708. [2022-02-10 03:57:44,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20708 states, 20707 states have (on average 2.69449944463225) internal successors, (55795), 20707 states have internal predecessors, (55795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:44,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20708 states to 20708 states and 55795 transitions. [2022-02-10 03:57:44,062 INFO L78 Accepts]: Start accepts. Automaton has 20708 states and 55795 transitions. Word has length 28 [2022-02-10 03:57:44,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:57:44,062 INFO L470 AbstractCegarLoop]: Abstraction has 20708 states and 55795 transitions. [2022-02-10 03:57:44,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.75) internal successors, (55), 20 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:44,062 INFO L276 IsEmpty]: Start isEmpty. Operand 20708 states and 55795 transitions. [2022-02-10 03:57:44,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:57:44,085 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:57:44,085 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:57:44,101 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Ended with exit code 0 [2022-02-10 03:57:44,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:57:44,285 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:57:44,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:57:44,285 INFO L85 PathProgramCache]: Analyzing trace with hash -19718532, now seen corresponding path program 35 times [2022-02-10 03:57:44,286 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:57:44,286 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102702089] [2022-02-10 03:57:44,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:57:44,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:57:44,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:57:44,339 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:44,339 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:57:44,339 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102702089] [2022-02-10 03:57:44,339 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102702089] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:57:44,340 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586261941] [2022-02-10 03:57:44,340 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 03:57:44,340 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:57:44,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:57:44,341 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) [2022-02-10 03:57:44,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2022-02-10 03:57:44,363 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-10 03:57:44,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:57:44,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 03:57:44,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:57:44,432 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:44,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:57:44,497 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:44,498 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586261941] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:57:44,498 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:57:44,498 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 15 [2022-02-10 03:57:44,498 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375028389] [2022-02-10 03:57:44,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:57:44,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-10 03:57:44,498 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:57:44,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-10 03:57:44,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2022-02-10 03:57:44,498 INFO L87 Difference]: Start difference. First operand 20708 states and 55795 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:45,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:57:45,025 INFO L93 Difference]: Finished difference Result 24947 states and 66451 transitions. [2022-02-10 03:57:45,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-10 03:57:45,026 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:57:45,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:57:45,078 INFO L225 Difference]: With dead ends: 24947 [2022-02-10 03:57:45,078 INFO L226 Difference]: Without dead ends: 24947 [2022-02-10 03:57:45,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=500, Invalid=1480, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 03:57:45,078 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 151 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:57:45,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 164 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 03:57:45,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24947 states. [2022-02-10 03:57:45,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24947 to 20730. [2022-02-10 03:57:45,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20730 states, 20729 states have (on average 2.6938106035023397) internal successors, (55840), 20729 states have internal predecessors, (55840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:45,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20730 states to 20730 states and 55840 transitions. [2022-02-10 03:57:45,458 INFO L78 Accepts]: Start accepts. Automaton has 20730 states and 55840 transitions. Word has length 28 [2022-02-10 03:57:45,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:57:45,458 INFO L470 AbstractCegarLoop]: Abstraction has 20730 states and 55840 transitions. [2022-02-10 03:57:45,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:45,458 INFO L276 IsEmpty]: Start isEmpty. Operand 20730 states and 55840 transitions. [2022-02-10 03:57:45,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:57:45,481 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:57:45,481 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:57:45,496 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Ended with exit code 0 [2022-02-10 03:57:45,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:57:45,681 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:57:45,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:57:45,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1131806788, now seen corresponding path program 36 times [2022-02-10 03:57:45,682 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:57:45,682 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016951257] [2022-02-10 03:57:45,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:57:45,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:57:45,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:57:45,729 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:45,729 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:57:45,729 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016951257] [2022-02-10 03:57:45,729 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016951257] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:57:45,729 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587533825] [2022-02-10 03:57:45,729 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 03:57:45,729 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:57:45,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:57:45,730 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) [2022-02-10 03:57:45,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2022-02-10 03:57:45,751 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-10 03:57:45,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:57:45,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 03:57:45,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:57:45,815 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:45,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:57:45,881 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:45,881 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587533825] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:57:45,881 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:57:45,881 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 15 [2022-02-10 03:57:45,882 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108989344] [2022-02-10 03:57:45,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:57:45,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-10 03:57:45,882 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:57:45,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-10 03:57:45,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-02-10 03:57:45,882 INFO L87 Difference]: Start difference. First operand 20730 states and 55840 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:46,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:57:46,408 INFO L93 Difference]: Finished difference Result 24904 states and 66336 transitions. [2022-02-10 03:57:46,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-10 03:57:46,409 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:57:46,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:57:46,467 INFO L225 Difference]: With dead ends: 24904 [2022-02-10 03:57:46,467 INFO L226 Difference]: Without dead ends: 24901 [2022-02-10 03:57:46,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 554 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=447, Invalid=1623, Unknown=0, NotChecked=0, Total=2070 [2022-02-10 03:57:46,467 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 242 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:57:46,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 144 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 03:57:46,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24901 states. [2022-02-10 03:57:46,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24901 to 20716. [2022-02-10 03:57:46,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20716 states, 20715 states have (on average 2.694182959208303) internal successors, (55810), 20715 states have internal predecessors, (55810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:46,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20716 states to 20716 states and 55810 transitions. [2022-02-10 03:57:46,896 INFO L78 Accepts]: Start accepts. Automaton has 20716 states and 55810 transitions. Word has length 28 [2022-02-10 03:57:46,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:57:46,896 INFO L470 AbstractCegarLoop]: Abstraction has 20716 states and 55810 transitions. [2022-02-10 03:57:46,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:46,896 INFO L276 IsEmpty]: Start isEmpty. Operand 20716 states and 55810 transitions. [2022-02-10 03:57:46,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:57:46,922 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:57:46,922 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:57:46,938 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Ended with exit code 0 [2022-02-10 03:57:47,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:57:47,123 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:57:47,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:57:47,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1528809992, now seen corresponding path program 58 times [2022-02-10 03:57:47,123 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:57:47,123 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575632412] [2022-02-10 03:57:47,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:57:47,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:57:47,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:57:47,164 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:47,164 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:57:47,164 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575632412] [2022-02-10 03:57:47,164 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575632412] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:57:47,164 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793670901] [2022-02-10 03:57:47,164 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:57:47,164 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:57:47,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:57:47,165 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) [2022-02-10 03:57:47,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2022-02-10 03:57:47,186 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:57:47,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:57:47,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 03:57:47,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:57:47,281 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:57:47,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:57:47,386 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:47,386 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793670901] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:57:47,386 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:57:47,386 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 20 [2022-02-10 03:57:47,386 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685740928] [2022-02-10 03:57:47,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:57:47,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 03:57:47,386 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:57:47,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 03:57:47,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2022-02-10 03:57:47,387 INFO L87 Difference]: Start difference. First operand 20716 states and 55810 transitions. Second operand has 20 states, 20 states have (on average 2.7) internal successors, (54), 20 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) [2022-02-10 03:57:49,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:57:49,056 INFO L93 Difference]: Finished difference Result 30365 states and 78060 transitions. [2022-02-10 03:57:49,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-02-10 03:57:49,056 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.7) internal successors, (54), 20 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 28 [2022-02-10 03:57:49,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:57:49,128 INFO L225 Difference]: With dead ends: 30365 [2022-02-10 03:57:49,129 INFO L226 Difference]: Without dead ends: 30365 [2022-02-10 03:57:49,130 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4878 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2477, Invalid=9733, Unknown=0, NotChecked=0, Total=12210 [2022-02-10 03:57:49,130 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 529 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 921 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 1067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 03:57:49,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [529 Valid, 322 Invalid, 1067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 921 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 03:57:49,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30365 states. [2022-02-10 03:57:49,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30365 to 20796. [2022-02-10 03:57:49,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20796 states, 20795 states have (on average 2.6921856215436404) internal successors, (55984), 20795 states have internal predecessors, (55984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:49,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20796 states to 20796 states and 55984 transitions. [2022-02-10 03:57:49,646 INFO L78 Accepts]: Start accepts. Automaton has 20796 states and 55984 transitions. Word has length 28 [2022-02-10 03:57:49,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:57:49,646 INFO L470 AbstractCegarLoop]: Abstraction has 20796 states and 55984 transitions. [2022-02-10 03:57:49,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.7) internal successors, (54), 20 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) [2022-02-10 03:57:49,646 INFO L276 IsEmpty]: Start isEmpty. Operand 20796 states and 55984 transitions. [2022-02-10 03:57:49,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:57:49,669 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:57:49,669 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:57:49,685 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Ended with exit code 0 [2022-02-10 03:57:49,870 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,SelfDestructingSolverStorable95 [2022-02-10 03:57:49,870 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:57:49,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:57:49,871 INFO L85 PathProgramCache]: Analyzing trace with hash 816116276, now seen corresponding path program 59 times [2022-02-10 03:57:49,871 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:57:49,871 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142020542] [2022-02-10 03:57:49,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:57:49,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:57:49,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:57:49,915 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:49,915 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:57:49,915 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142020542] [2022-02-10 03:57:49,915 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142020542] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:57:49,916 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381436921] [2022-02-10 03:57:49,916 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 03:57:49,916 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:57:49,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:57:49,916 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) [2022-02-10 03:57:49,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2022-02-10 03:57:49,944 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 03:57:49,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:57:49,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 03:57:49,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:57:50,003 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:50,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:57:50,059 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:50,059 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381436921] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:57:50,059 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:57:50,059 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 13 [2022-02-10 03:57:50,059 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179114678] [2022-02-10 03:57:50,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:57:50,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-10 03:57:50,059 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:57:50,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-10 03:57:50,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-02-10 03:57:50,060 INFO L87 Difference]: Start difference. First operand 20796 states and 55984 transitions. Second operand has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 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) [2022-02-10 03:57:50,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:57:50,419 INFO L93 Difference]: Finished difference Result 29659 states and 78279 transitions. [2022-02-10 03:57:50,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-10 03:57:50,420 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 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 28 [2022-02-10 03:57:50,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:57:50,481 INFO L225 Difference]: With dead ends: 29659 [2022-02-10 03:57:50,482 INFO L226 Difference]: Without dead ends: 29641 [2022-02-10 03:57:50,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2022-02-10 03:57:50,482 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 146 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:57:50,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 157 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:57:50,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29641 states. [2022-02-10 03:57:50,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29641 to 24143. [2022-02-10 03:57:50,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24143 states, 24142 states have (on average 2.6935630850799437) internal successors, (65028), 24142 states have internal predecessors, (65028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:50,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24143 states to 24143 states and 65028 transitions. [2022-02-10 03:57:50,943 INFO L78 Accepts]: Start accepts. Automaton has 24143 states and 65028 transitions. Word has length 28 [2022-02-10 03:57:50,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:57:50,943 INFO L470 AbstractCegarLoop]: Abstraction has 24143 states and 65028 transitions. [2022-02-10 03:57:50,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 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) [2022-02-10 03:57:50,944 INFO L276 IsEmpty]: Start isEmpty. Operand 24143 states and 65028 transitions. [2022-02-10 03:57:50,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:57:50,973 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:57:50,974 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:57:50,989 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Ended with exit code 0 [2022-02-10 03:57:51,174 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,SelfDestructingSolverStorable96 [2022-02-10 03:57:51,174 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:57:51,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:57:51,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1743087800, now seen corresponding path program 60 times [2022-02-10 03:57:51,174 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:57:51,175 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144520800] [2022-02-10 03:57:51,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:57:51,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:57:51,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:57:51,207 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:51,207 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:57:51,207 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144520800] [2022-02-10 03:57:51,207 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144520800] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:57:51,208 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452050447] [2022-02-10 03:57:51,208 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 03:57:51,208 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:57:51,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:57:51,209 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) [2022-02-10 03:57:51,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2022-02-10 03:57:51,229 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-10 03:57:51,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:57:51,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-10 03:57:51,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:57:51,309 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:57:51,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:57:51,403 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:51,403 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452050447] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:57:51,403 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:57:51,403 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 15 [2022-02-10 03:57:51,403 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067209285] [2022-02-10 03:57:51,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:57:51,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-10 03:57:51,404 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:57:51,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-10 03:57:51,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-02-10 03:57:51,404 INFO L87 Difference]: Start difference. First operand 24143 states and 65028 transitions. Second operand has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:51,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:57:51,917 INFO L93 Difference]: Finished difference Result 46801 states and 116769 transitions. [2022-02-10 03:57:51,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-10 03:57:51,917 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:57:51,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:57:52,022 INFO L225 Difference]: With dead ends: 46801 [2022-02-10 03:57:52,022 INFO L226 Difference]: Without dead ends: 46801 [2022-02-10 03:57:52,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 46 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=462, Invalid=944, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 03:57:52,023 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 315 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:57:52,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [315 Valid, 113 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:57:52,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46801 states. [2022-02-10 03:57:52,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46801 to 30813. [2022-02-10 03:57:52,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30813 states, 30812 states have (on average 2.725431650006491) internal successors, (83976), 30812 states have internal predecessors, (83976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:52,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30813 states to 30813 states and 83976 transitions. [2022-02-10 03:57:52,717 INFO L78 Accepts]: Start accepts. Automaton has 30813 states and 83976 transitions. Word has length 28 [2022-02-10 03:57:52,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:57:52,717 INFO L470 AbstractCegarLoop]: Abstraction has 30813 states and 83976 transitions. [2022-02-10 03:57:52,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:52,717 INFO L276 IsEmpty]: Start isEmpty. Operand 30813 states and 83976 transitions. [2022-02-10 03:57:52,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:57:52,748 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:57:52,748 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:57:52,763 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Ended with exit code 0 [2022-02-10 03:57:52,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,97 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:57:52,948 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:57:52,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:57:52,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1141900804, now seen corresponding path program 61 times [2022-02-10 03:57:52,949 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:57:52,949 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489653145] [2022-02-10 03:57:52,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:57:52,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:57:52,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:57:53,001 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:53,001 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:57:53,001 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489653145] [2022-02-10 03:57:53,001 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489653145] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:57:53,001 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620842099] [2022-02-10 03:57:53,002 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 03:57:53,002 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:57:53,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:57:53,003 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) [2022-02-10 03:57:53,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2022-02-10 03:57:53,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:57:53,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 03:57:53,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:57:53,108 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:57:53,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:57:53,197 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:53,198 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620842099] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:57:53,198 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:57:53,198 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 18 [2022-02-10 03:57:53,198 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304768603] [2022-02-10 03:57:53,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:57:53,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-10 03:57:53,198 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:57:53,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-10 03:57:53,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-02-10 03:57:53,198 INFO L87 Difference]: Start difference. First operand 30813 states and 83976 transitions. Second operand has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:54,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:57:54,508 INFO L93 Difference]: Finished difference Result 42959 states and 112466 transitions. [2022-02-10 03:57:54,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-02-10 03:57:54,509 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:57:54,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:57:54,619 INFO L225 Difference]: With dead ends: 42959 [2022-02-10 03:57:54,619 INFO L226 Difference]: Without dead ends: 42959 [2022-02-10 03:57:54,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3554 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=2004, Invalid=6926, Unknown=0, NotChecked=0, Total=8930 [2022-02-10 03:57:54,621 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 504 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 03:57:54,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [504 Valid, 226 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 03:57:54,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42959 states. [2022-02-10 03:57:55,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42959 to 30866. [2022-02-10 03:57:55,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30866 states, 30865 states have (on average 2.724412765268103) internal successors, (84089), 30865 states have internal predecessors, (84089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:55,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30866 states to 30866 states and 84089 transitions. [2022-02-10 03:57:55,403 INFO L78 Accepts]: Start accepts. Automaton has 30866 states and 84089 transitions. Word has length 28 [2022-02-10 03:57:55,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:57:55,404 INFO L470 AbstractCegarLoop]: Abstraction has 30866 states and 84089 transitions. [2022-02-10 03:57:55,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:55,404 INFO L276 IsEmpty]: Start isEmpty. Operand 30866 states and 84089 transitions. [2022-02-10 03:57:55,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:57:55,439 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:57:55,439 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:57:55,455 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Ended with exit code 0 [2022-02-10 03:57:55,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,98 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:57:55,648 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:57:55,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:57:55,648 INFO L85 PathProgramCache]: Analyzing trace with hash -2042847176, now seen corresponding path program 62 times [2022-02-10 03:57:55,648 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:57:55,648 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129860356] [2022-02-10 03:57:55,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:57:55,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:57:55,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:57:55,690 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:55,690 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:57:55,690 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129860356] [2022-02-10 03:57:55,690 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129860356] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:57:55,690 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085668645] [2022-02-10 03:57:55,690 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:57:55,690 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:57:55,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:57:55,691 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) [2022-02-10 03:57:55,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2022-02-10 03:57:55,712 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:57:55,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:57:55,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 03:57:55,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:57:55,772 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:55,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:57:55,827 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:55,827 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085668645] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:57:55,827 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:57:55,827 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 12 [2022-02-10 03:57:55,828 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443465021] [2022-02-10 03:57:55,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:57:55,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-10 03:57:55,828 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:57:55,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-10 03:57:55,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-02-10 03:57:55,828 INFO L87 Difference]: Start difference. First operand 30866 states and 84089 transitions. Second operand has 12 states, 12 states have (on average 3.5) internal successors, (42), 12 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) [2022-02-10 03:57:56,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:57:56,192 INFO L93 Difference]: Finished difference Result 32799 states and 87349 transitions. [2022-02-10 03:57:56,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-10 03:57:56,192 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 12 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 28 [2022-02-10 03:57:56,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:57:56,273 INFO L225 Difference]: With dead ends: 32799 [2022-02-10 03:57:56,274 INFO L226 Difference]: Without dead ends: 32799 [2022-02-10 03:57:56,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 51 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=175, Invalid=425, Unknown=0, NotChecked=0, Total=600 [2022-02-10 03:57:56,274 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 148 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:57:56,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 130 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:57:56,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32799 states. [2022-02-10 03:57:56,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32799 to 30374. [2022-02-10 03:57:56,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30374 states, 30373 states have (on average 2.71886214730188) internal successors, (82580), 30373 states have internal predecessors, (82580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:56,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30374 states to 30374 states and 82580 transitions. [2022-02-10 03:57:56,896 INFO L78 Accepts]: Start accepts. Automaton has 30374 states and 82580 transitions. Word has length 28 [2022-02-10 03:57:56,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:57:56,896 INFO L470 AbstractCegarLoop]: Abstraction has 30374 states and 82580 transitions. [2022-02-10 03:57:56,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 12 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) [2022-02-10 03:57:56,896 INFO L276 IsEmpty]: Start isEmpty. Operand 30374 states and 82580 transitions. [2022-02-10 03:57:56,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:57:56,926 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:57:56,926 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:57:56,942 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Forceful destruction successful, exit code 0 [2022-02-10 03:57:57,127 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,SelfDestructingSolverStorable99 [2022-02-10 03:57:57,127 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:57:57,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:57:57,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1371309188, now seen corresponding path program 63 times [2022-02-10 03:57:57,127 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:57:57,127 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2768019] [2022-02-10 03:57:57,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:57:57,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:57:57,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:57:57,169 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:57,170 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:57:57,170 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2768019] [2022-02-10 03:57:57,170 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2768019] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:57:57,170 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849321093] [2022-02-10 03:57:57,170 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:57:57,170 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:57:57,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:57:57,171 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) [2022-02-10 03:57:57,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2022-02-10 03:57:57,193 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-10 03:57:57,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:57:57,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 03:57:57,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:57:57,274 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:57:57,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:57:57,366 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:57,366 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849321093] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:57:57,366 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:57:57,366 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 18 [2022-02-10 03:57:57,367 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131039522] [2022-02-10 03:57:57,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:57:57,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-10 03:57:57,367 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:57:57,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-10 03:57:57,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2022-02-10 03:57:57,367 INFO L87 Difference]: Start difference. First operand 30374 states and 82580 transitions. Second operand has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:58,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:57:58,674 INFO L93 Difference]: Finished difference Result 43288 states and 112461 transitions. [2022-02-10 03:57:58,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-02-10 03:57:58,674 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:57:58,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:57:58,785 INFO L225 Difference]: With dead ends: 43288 [2022-02-10 03:57:58,785 INFO L226 Difference]: Without dead ends: 43287 [2022-02-10 03:57:58,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2991 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1680, Invalid=6330, Unknown=0, NotChecked=0, Total=8010 [2022-02-10 03:57:58,785 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 526 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 03:57:58,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [526 Valid, 201 Invalid, 849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 03:57:58,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43287 states. [2022-02-10 03:57:59,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43287 to 30444. [2022-02-10 03:57:59,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30444 states, 30443 states have (on average 2.7178004795847976) internal successors, (82738), 30443 states have internal predecessors, (82738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:59,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30444 states to 30444 states and 82738 transitions. [2022-02-10 03:57:59,548 INFO L78 Accepts]: Start accepts. Automaton has 30444 states and 82738 transitions. Word has length 28 [2022-02-10 03:57:59,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:57:59,548 INFO L470 AbstractCegarLoop]: Abstraction has 30444 states and 82738 transitions. [2022-02-10 03:57:59,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:59,548 INFO L276 IsEmpty]: Start isEmpty. Operand 30444 states and 82738 transitions. [2022-02-10 03:57:59,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:57:59,581 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:57:59,581 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:57:59,597 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Ended with exit code 0 [2022-02-10 03:57:59,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100,100 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:57:59,782 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:57:59,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:57:59,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1591139448, now seen corresponding path program 64 times [2022-02-10 03:57:59,782 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:57:59,782 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281329911] [2022-02-10 03:57:59,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:57:59,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:57:59,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:57:59,822 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:57:59,822 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:57:59,822 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281329911] [2022-02-10 03:57:59,823 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281329911] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:57:59,823 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566804432] [2022-02-10 03:57:59,823 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:57:59,823 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:57:59,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:57:59,824 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) [2022-02-10 03:57:59,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2022-02-10 03:57:59,844 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:57:59,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:57:59,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-10 03:57:59,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:57:59,914 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 03:57:59,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:57:59,997 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:57:59,997 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566804432] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:57:59,998 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:57:59,998 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 13 [2022-02-10 03:57:59,998 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786875504] [2022-02-10 03:57:59,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:57:59,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-10 03:57:59,999 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:57:59,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-10 03:57:59,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-02-10 03:57:59,999 INFO L87 Difference]: Start difference. First operand 30444 states and 82738 transitions. Second operand has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:58:00,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:58:00,383 INFO L93 Difference]: Finished difference Result 38748 states and 100124 transitions. [2022-02-10 03:58:00,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 03:58:00,383 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:58:00,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:58:00,471 INFO L225 Difference]: With dead ends: 38748 [2022-02-10 03:58:00,471 INFO L226 Difference]: Without dead ends: 38748 [2022-02-10 03:58:00,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 48 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=256, Invalid=556, Unknown=0, NotChecked=0, Total=812 [2022-02-10 03:58:00,471 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 234 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:58:00,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 83 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:58:00,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38748 states. [2022-02-10 03:58:00,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38748 to 31592. [2022-02-10 03:58:01,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31592 states, 31591 states have (on average 2.715995061884714) internal successors, (85801), 31591 states have internal predecessors, (85801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:58:01,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31592 states to 31592 states and 85801 transitions. [2022-02-10 03:58:01,102 INFO L78 Accepts]: Start accepts. Automaton has 31592 states and 85801 transitions. Word has length 28 [2022-02-10 03:58:01,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:58:01,102 INFO L470 AbstractCegarLoop]: Abstraction has 31592 states and 85801 transitions. [2022-02-10 03:58:01,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:58:01,102 INFO L276 IsEmpty]: Start isEmpty. Operand 31592 states and 85801 transitions. [2022-02-10 03:58:01,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:58:01,136 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:58:01,136 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:58:01,153 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Ended with exit code 0 [2022-02-10 03:58:01,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101,101 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:58:01,337 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:58:01,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:58:01,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1385005828, now seen corresponding path program 65 times [2022-02-10 03:58:01,337 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:58:01,337 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223183449] [2022-02-10 03:58:01,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:58:01,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:58:01,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:58:01,387 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:58:01,387 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:58:01,387 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223183449] [2022-02-10 03:58:01,388 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223183449] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:58:01,388 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696225560] [2022-02-10 03:58:01,388 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 03:58:01,388 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:58:01,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:58:01,389 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) [2022-02-10 03:58:01,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2022-02-10 03:58:01,410 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 03:58:01,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:58:01,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 03:58:01,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:58:01,488 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 03:58:01,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:58:01,565 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:58:01,565 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696225560] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:58:01,565 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:58:01,565 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 15 [2022-02-10 03:58:01,565 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641482779] [2022-02-10 03:58:01,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:58:01,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-10 03:58:01,566 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:58:01,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-10 03:58:01,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-02-10 03:58:01,566 INFO L87 Difference]: Start difference. First operand 31592 states and 85801 transitions. Second operand has 15 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:58:02,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:58:02,328 INFO L93 Difference]: Finished difference Result 40064 states and 106166 transitions. [2022-02-10 03:58:02,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-02-10 03:58:02,330 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:58:02,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:58:02,430 INFO L225 Difference]: With dead ends: 40064 [2022-02-10 03:58:02,431 INFO L226 Difference]: Without dead ends: 40064 [2022-02-10 03:58:02,431 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1195 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=816, Invalid=2844, Unknown=0, NotChecked=0, Total=3660 [2022-02-10 03:58:02,431 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 321 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:58:02,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 154 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 03:58:02,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40064 states. [2022-02-10 03:58:03,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40064 to 33038. [2022-02-10 03:58:03,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33038 states, 33037 states have (on average 2.7165904894512214) internal successors, (89748), 33037 states have internal predecessors, (89748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:58:03,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33038 states to 33038 states and 89748 transitions. [2022-02-10 03:58:03,166 INFO L78 Accepts]: Start accepts. Automaton has 33038 states and 89748 transitions. Word has length 28 [2022-02-10 03:58:03,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:58:03,167 INFO L470 AbstractCegarLoop]: Abstraction has 33038 states and 89748 transitions. [2022-02-10 03:58:03,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:58:03,167 INFO L276 IsEmpty]: Start isEmpty. Operand 33038 states and 89748 transitions. [2022-02-10 03:58:03,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:58:03,204 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:58:03,204 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:58:03,220 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Ended with exit code 0 [2022-02-10 03:58:03,404 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,SelfDestructingSolverStorable102 [2022-02-10 03:58:03,405 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:58:03,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:58:03,405 INFO L85 PathProgramCache]: Analyzing trace with hash -2012834492, now seen corresponding path program 66 times [2022-02-10 03:58:03,405 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:58:03,405 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115229421] [2022-02-10 03:58:03,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:58:03,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:58:03,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:58:03,439 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:58:03,440 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:58:03,440 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115229421] [2022-02-10 03:58:03,440 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115229421] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:58:03,440 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180532483] [2022-02-10 03:58:03,440 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 03:58:03,440 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:58:03,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:58:03,441 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) [2022-02-10 03:58:03,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2022-02-10 03:58:03,462 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 03:58:03,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:58:03,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 03:58:03,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:58:03,542 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 03:58:03,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:58:03,620 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:58:03,620 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180532483] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:58:03,620 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:58:03,620 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 15 [2022-02-10 03:58:03,620 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621625253] [2022-02-10 03:58:03,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:58:03,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-10 03:58:03,620 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:58:03,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-10 03:58:03,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-02-10 03:58:03,620 INFO L87 Difference]: Start difference. First operand 33038 states and 89748 transitions. Second operand has 15 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:58:04,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:58:04,243 INFO L93 Difference]: Finished difference Result 39942 states and 105963 transitions. [2022-02-10 03:58:04,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-02-10 03:58:04,244 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:58:04,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:58:04,331 INFO L225 Difference]: With dead ends: 39942 [2022-02-10 03:58:04,331 INFO L226 Difference]: Without dead ends: 39941 [2022-02-10 03:58:04,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 806 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=612, Invalid=2144, Unknown=0, NotChecked=0, Total=2756 [2022-02-10 03:58:04,332 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 355 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:58:04,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [355 Valid, 123 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 03:58:04,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39941 states. [2022-02-10 03:58:04,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39941 to 33038. [2022-02-10 03:58:04,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33038 states, 33037 states have (on average 2.7165602203589914) internal successors, (89747), 33037 states have internal predecessors, (89747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:58:05,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33038 states to 33038 states and 89747 transitions. [2022-02-10 03:58:05,066 INFO L78 Accepts]: Start accepts. Automaton has 33038 states and 89747 transitions. Word has length 28 [2022-02-10 03:58:05,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:58:05,067 INFO L470 AbstractCegarLoop]: Abstraction has 33038 states and 89747 transitions. [2022-02-10 03:58:05,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:58:05,067 INFO L276 IsEmpty]: Start isEmpty. Operand 33038 states and 89747 transitions. [2022-02-10 03:58:05,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:58:05,109 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:58:05,109 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:58:05,125 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Ended with exit code 0 [2022-02-10 03:58:05,309 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,SelfDestructingSolverStorable103 [2022-02-10 03:58:05,310 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:58:05,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:58:05,310 INFO L85 PathProgramCache]: Analyzing trace with hash 9058752, now seen corresponding path program 67 times [2022-02-10 03:58:05,310 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:58:05,310 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426693248] [2022-02-10 03:58:05,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:58:05,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:58:05,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:58:05,362 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:58:05,362 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:58:05,362 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426693248] [2022-02-10 03:58:05,362 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426693248] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:58:05,362 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316633934] [2022-02-10 03:58:05,362 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 03:58:05,362 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:58:05,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:58:05,363 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) [2022-02-10 03:58:05,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2022-02-10 03:58:05,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:58:05,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 03:58:05,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:58:05,472 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:58:05,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:58:05,551 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:58:05,551 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316633934] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:58:05,551 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:58:05,551 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 16 [2022-02-10 03:58:05,551 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200053685] [2022-02-10 03:58:05,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:58:05,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-10 03:58:05,551 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:58:05,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-10 03:58:05,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2022-02-10 03:58:05,557 INFO L87 Difference]: Start difference. First operand 33038 states and 89747 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:58:06,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:58:06,697 INFO L93 Difference]: Finished difference Result 41151 states and 108127 transitions. [2022-02-10 03:58:06,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-02-10 03:58:06,697 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:58:06,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:58:06,806 INFO L225 Difference]: With dead ends: 41151 [2022-02-10 03:58:06,806 INFO L226 Difference]: Without dead ends: 41151 [2022-02-10 03:58:06,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2386 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1387, Invalid=4775, Unknown=0, NotChecked=0, Total=6162 [2022-02-10 03:58:06,808 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 417 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:58:06,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [417 Valid, 279 Invalid, 803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 03:58:06,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41151 states. [2022-02-10 03:58:07,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41151 to 33126. [2022-02-10 03:58:07,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33126 states, 33125 states have (on average 2.715230188679245) internal successors, (89942), 33125 states have internal predecessors, (89942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:58:07,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33126 states to 33126 states and 89942 transitions. [2022-02-10 03:58:07,717 INFO L78 Accepts]: Start accepts. Automaton has 33126 states and 89942 transitions. Word has length 28 [2022-02-10 03:58:07,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:58:07,717 INFO L470 AbstractCegarLoop]: Abstraction has 33126 states and 89942 transitions. [2022-02-10 03:58:07,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:58:07,717 INFO L276 IsEmpty]: Start isEmpty. Operand 33126 states and 89942 transitions. [2022-02-10 03:58:07,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:58:07,760 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:58:07,760 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:58:07,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Forceful destruction successful, exit code 0 [2022-02-10 03:58:07,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,104 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:58:07,961 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:58:07,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:58:07,961 INFO L85 PathProgramCache]: Analyzing trace with hash -336891904, now seen corresponding path program 68 times [2022-02-10 03:58:07,962 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:58:07,962 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779764297] [2022-02-10 03:58:07,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:58:07,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:58:07,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:58:08,005 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:58:08,005 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:58:08,005 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779764297] [2022-02-10 03:58:08,005 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779764297] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:58:08,005 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811254926] [2022-02-10 03:58:08,005 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:58:08,005 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:58:08,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:58:08,006 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) [2022-02-10 03:58:08,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2022-02-10 03:58:08,026 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:58:08,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:58:08,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 03:58:08,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:58:08,094 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:58:08,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:58:08,172 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:58:08,172 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811254926] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:58:08,172 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:58:08,172 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 16 [2022-02-10 03:58:08,173 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76776811] [2022-02-10 03:58:08,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:58:08,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-10 03:58:08,173 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:58:08,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-10 03:58:08,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2022-02-10 03:58:08,173 INFO L87 Difference]: Start difference. First operand 33126 states and 89942 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:58:08,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:58:08,893 INFO L93 Difference]: Finished difference Result 40015 states and 106136 transitions. [2022-02-10 03:58:08,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-02-10 03:58:08,894 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:58:08,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:58:08,998 INFO L225 Difference]: With dead ends: 40015 [2022-02-10 03:58:08,999 INFO L226 Difference]: Without dead ends: 40012 [2022-02-10 03:58:08,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 911 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=674, Invalid=2406, Unknown=0, NotChecked=0, Total=3080 [2022-02-10 03:58:08,999 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 306 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:58:08,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 171 Invalid, 677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 03:58:09,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40012 states. [2022-02-10 03:58:09,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40012 to 33036. [2022-02-10 03:58:09,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33036 states, 33035 states have (on average 2.7164825185409414) internal successors, (89739), 33035 states have internal predecessors, (89739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:58:09,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33036 states to 33036 states and 89739 transitions. [2022-02-10 03:58:09,771 INFO L78 Accepts]: Start accepts. Automaton has 33036 states and 89739 transitions. Word has length 28 [2022-02-10 03:58:09,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:58:09,772 INFO L470 AbstractCegarLoop]: Abstraction has 33036 states and 89739 transitions. [2022-02-10 03:58:09,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:58:09,772 INFO L276 IsEmpty]: Start isEmpty. Operand 33036 states and 89739 transitions. [2022-02-10 03:58:09,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:58:09,814 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:58:09,814 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:58:09,829 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Ended with exit code 0 [2022-02-10 03:58:10,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,105 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:58:10,014 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:58:10,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:58:10,015 INFO L85 PathProgramCache]: Analyzing trace with hash -307389576, now seen corresponding path program 69 times [2022-02-10 03:58:10,015 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:58:10,015 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973822982] [2022-02-10 03:58:10,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:58:10,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:58:10,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:58:10,047 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:58:10,047 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:58:10,048 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973822982] [2022-02-10 03:58:10,048 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973822982] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:58:10,048 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588705773] [2022-02-10 03:58:10,048 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:58:10,048 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:58:10,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:58:10,050 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) [2022-02-10 03:58:10,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2022-02-10 03:58:10,071 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 03:58:10,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:58:10,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-10 03:58:10,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:58:10,138 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:58:10,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:58:10,206 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:58:10,206 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588705773] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:58:10,206 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:58:10,206 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2022-02-10 03:58:10,206 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752390796] [2022-02-10 03:58:10,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:58:10,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-10 03:58:10,206 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:58:10,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-10 03:58:10,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-02-10 03:58:10,207 INFO L87 Difference]: Start difference. First operand 33036 states and 89739 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:58:10,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:58:10,580 INFO L93 Difference]: Finished difference Result 39132 states and 101721 transitions. [2022-02-10 03:58:10,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-10 03:58:10,581 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:58:10,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:58:10,687 INFO L225 Difference]: With dead ends: 39132 [2022-02-10 03:58:10,688 INFO L226 Difference]: Without dead ends: 39132 [2022-02-10 03:58:10,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 49 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=195, Invalid=455, Unknown=0, NotChecked=0, Total=650 [2022-02-10 03:58:10,688 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 172 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:58:10,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 71 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:58:10,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39132 states. [2022-02-10 03:58:11,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39132 to 33480. [2022-02-10 03:58:11,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33480 states, 33479 states have (on average 2.706741539472505) internal successors, (90619), 33479 states have internal predecessors, (90619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:58:11,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33480 states to 33480 states and 90619 transitions. [2022-02-10 03:58:11,412 INFO L78 Accepts]: Start accepts. Automaton has 33480 states and 90619 transitions. Word has length 28 [2022-02-10 03:58:11,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:58:11,412 INFO L470 AbstractCegarLoop]: Abstraction has 33480 states and 90619 transitions. [2022-02-10 03:58:11,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:58:11,412 INFO L276 IsEmpty]: Start isEmpty. Operand 33480 states and 90619 transitions. [2022-02-10 03:58:11,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:58:11,453 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:58:11,453 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:58:11,468 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Ended with exit code 0 [2022-02-10 03:58:11,653 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,SelfDestructingSolverStorable106 [2022-02-10 03:58:11,653 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:58:11,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:58:11,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1170477820, now seen corresponding path program 70 times [2022-02-10 03:58:11,654 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:58:11,654 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009765637] [2022-02-10 03:58:11,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:58:11,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:58:11,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:58:11,704 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:58:11,704 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:58:11,704 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009765637] [2022-02-10 03:58:11,704 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009765637] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:58:11,704 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605710376] [2022-02-10 03:58:11,704 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:58:11,704 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:58:11,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:58:11,705 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) [2022-02-10 03:58:11,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2022-02-10 03:58:11,726 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:58:11,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:58:11,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 03:58:11,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:58:11,803 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:58:11,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:58:11,869 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:58:11,869 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605710376] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:58:11,869 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:58:11,869 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2022-02-10 03:58:11,869 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513532000] [2022-02-10 03:58:11,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:58:11,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-10 03:58:11,870 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:58:11,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-10 03:58:11,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-02-10 03:58:11,870 INFO L87 Difference]: Start difference. First operand 33480 states and 90619 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:58:12,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:58:12,571 INFO L93 Difference]: Finished difference Result 40338 states and 106567 transitions. [2022-02-10 03:58:12,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-02-10 03:58:12,572 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:58:12,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:58:12,658 INFO L225 Difference]: With dead ends: 40338 [2022-02-10 03:58:12,658 INFO L226 Difference]: Without dead ends: 40338 [2022-02-10 03:58:12,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 978 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=661, Invalid=2309, Unknown=0, NotChecked=0, Total=2970 [2022-02-10 03:58:12,659 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 244 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:58:12,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [244 Valid, 224 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 03:58:12,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40338 states. [2022-02-10 03:58:13,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40338 to 35142. [2022-02-10 03:58:13,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35142 states, 35141 states have (on average 2.6860647107367464) internal successors, (94391), 35141 states have internal predecessors, (94391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:58:13,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35142 states to 35142 states and 94391 transitions. [2022-02-10 03:58:13,454 INFO L78 Accepts]: Start accepts. Automaton has 35142 states and 94391 transitions. Word has length 28 [2022-02-10 03:58:13,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:58:13,454 INFO L470 AbstractCegarLoop]: Abstraction has 35142 states and 94391 transitions. [2022-02-10 03:58:13,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:58:13,455 INFO L276 IsEmpty]: Start isEmpty. Operand 35142 states and 94391 transitions. [2022-02-10 03:58:13,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:58:13,501 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:58:13,501 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:58:13,517 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Ended with exit code 0 [2022-02-10 03:58:13,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 107 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2022-02-10 03:58:13,702 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:58:13,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:58:13,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1275495940, now seen corresponding path program 71 times [2022-02-10 03:58:13,702 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:58:13,702 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538575607] [2022-02-10 03:58:13,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:58:13,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:58:13,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:58:13,740 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:58:13,740 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:58:13,740 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538575607] [2022-02-10 03:58:13,740 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538575607] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:58:13,740 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885677975] [2022-02-10 03:58:13,740 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 03:58:13,740 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:58:13,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:58:13,741 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) [2022-02-10 03:58:13,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2022-02-10 03:58:13,762 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 03:58:13,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:58:13,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 03:58:13,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:58:13,817 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:58:13,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:58:13,872 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:58:13,872 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885677975] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:58:13,872 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:58:13,872 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 12 [2022-02-10 03:58:13,872 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634273151] [2022-02-10 03:58:13,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:58:13,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-10 03:58:13,873 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:58:13,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-10 03:58:13,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-02-10 03:58:13,873 INFO L87 Difference]: Start difference. First operand 35142 states and 94391 transitions. Second operand has 12 states, 12 states have (on average 3.5) internal successors, (42), 12 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) [2022-02-10 03:58:14,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:58:14,262 INFO L93 Difference]: Finished difference Result 39822 states and 104966 transitions. [2022-02-10 03:58:14,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-10 03:58:14,262 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 12 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 28 [2022-02-10 03:58:14,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:58:14,365 INFO L225 Difference]: With dead ends: 39822 [2022-02-10 03:58:14,365 INFO L226 Difference]: Without dead ends: 39814 [2022-02-10 03:58:14,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=198, Invalid=452, Unknown=0, NotChecked=0, Total=650 [2022-02-10 03:58:14,366 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 142 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:58:14,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 126 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:58:14,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39814 states. [2022-02-10 03:58:15,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39814 to 37789. [2022-02-10 03:58:15,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37789 states, 37788 states have (on average 2.6860378956282416) internal successors, (101500), 37788 states have internal predecessors, (101500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:58:15,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37789 states to 37789 states and 101500 transitions. [2022-02-10 03:58:15,242 INFO L78 Accepts]: Start accepts. Automaton has 37789 states and 101500 transitions. Word has length 28 [2022-02-10 03:58:15,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:58:15,242 INFO L470 AbstractCegarLoop]: Abstraction has 37789 states and 101500 transitions. [2022-02-10 03:58:15,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 12 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) [2022-02-10 03:58:15,242 INFO L276 IsEmpty]: Start isEmpty. Operand 37789 states and 101500 transitions. [2022-02-10 03:58:15,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:58:15,292 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:58:15,292 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:58:15,307 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Ended with exit code 0 [2022-02-10 03:58:15,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,108 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:58:15,492 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:58:15,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:58:15,493 INFO L85 PathProgramCache]: Analyzing trace with hash -128888832, now seen corresponding path program 72 times [2022-02-10 03:58:15,493 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:58:15,493 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118199432] [2022-02-10 03:58:15,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:58:15,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:58:15,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:58:15,529 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:58:15,529 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:58:15,529 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118199432] [2022-02-10 03:58:15,529 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118199432] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:58:15,529 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805727550] [2022-02-10 03:58:15,529 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 03:58:15,529 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:58:15,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:58:15,530 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) [2022-02-10 03:58:15,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2022-02-10 03:58:15,551 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-10 03:58:15,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:58:15,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 03:58:15,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:58:15,607 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:58:15,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:58:15,660 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:58:15,660 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805727550] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:58:15,660 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:58:15,660 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 12 [2022-02-10 03:58:15,660 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013163061] [2022-02-10 03:58:15,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:58:15,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-10 03:58:15,660 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:58:15,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-10 03:58:15,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-02-10 03:58:15,661 INFO L87 Difference]: Start difference. First operand 37789 states and 101500 transitions. Second operand has 12 states, 12 states have (on average 3.5) internal successors, (42), 12 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) [2022-02-10 03:58:16,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:58:16,124 INFO L93 Difference]: Finished difference Result 40449 states and 106085 transitions. [2022-02-10 03:58:16,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-10 03:58:16,124 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 12 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 28 [2022-02-10 03:58:16,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:58:16,211 INFO L225 Difference]: With dead ends: 40449 [2022-02-10 03:58:16,211 INFO L226 Difference]: Without dead ends: 40449 [2022-02-10 03:58:16,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 51 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=187, Invalid=413, Unknown=0, NotChecked=0, Total=600 [2022-02-10 03:58:16,212 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 130 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:58:16,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 167 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 03:58:16,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40449 states. [2022-02-10 03:58:16,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40449 to 37825. [2022-02-10 03:58:16,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37825 states, 37824 states have (on average 2.68242385786802) internal successors, (101460), 37824 states have internal predecessors, (101460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:58:16,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37825 states to 37825 states and 101460 transitions. [2022-02-10 03:58:16,950 INFO L78 Accepts]: Start accepts. Automaton has 37825 states and 101460 transitions. Word has length 28 [2022-02-10 03:58:16,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:58:16,950 INFO L470 AbstractCegarLoop]: Abstraction has 37825 states and 101460 transitions. [2022-02-10 03:58:16,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 12 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) [2022-02-10 03:58:16,951 INFO L276 IsEmpty]: Start isEmpty. Operand 37825 states and 101460 transitions. [2022-02-10 03:58:16,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:58:16,998 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:58:16,998 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:58:17,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Forceful destruction successful, exit code 0 [2022-02-10 03:58:17,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,109 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:58:17,199 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:58:17,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:58:17,199 INFO L85 PathProgramCache]: Analyzing trace with hash 542649156, now seen corresponding path program 73 times [2022-02-10 03:58:17,199 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:58:17,199 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891218133] [2022-02-10 03:58:17,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:58:17,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:58:17,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:58:17,233 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:58:17,233 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:58:17,233 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891218133] [2022-02-10 03:58:17,233 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891218133] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:58:17,233 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795615627] [2022-02-10 03:58:17,233 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 03:58:17,233 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:58:17,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:58:17,234 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) [2022-02-10 03:58:17,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2022-02-10 03:58:17,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:58:17,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 03:58:17,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:58:17,316 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:58:17,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:58:17,383 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:58:17,383 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795615627] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:58:17,383 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:58:17,383 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2022-02-10 03:58:17,383 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211411587] [2022-02-10 03:58:17,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:58:17,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-10 03:58:17,383 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:58:17,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-10 03:58:17,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-02-10 03:58:17,384 INFO L87 Difference]: Start difference. First operand 37825 states and 101460 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:58:18,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:58:18,021 INFO L93 Difference]: Finished difference Result 43346 states and 114426 transitions. [2022-02-10 03:58:18,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-02-10 03:58:18,022 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:58:18,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:58:18,132 INFO L225 Difference]: With dead ends: 43346 [2022-02-10 03:58:18,133 INFO L226 Difference]: Without dead ends: 43344 [2022-02-10 03:58:18,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 592 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=465, Invalid=1605, Unknown=0, NotChecked=0, Total=2070 [2022-02-10 03:58:18,133 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 263 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:58:18,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 182 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 03:58:18,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43344 states. [2022-02-10 03:58:18,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43344 to 37825. [2022-02-10 03:58:18,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37825 states, 37824 states have (on average 2.682370981387479) internal successors, (101458), 37824 states have internal predecessors, (101458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:58:18,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37825 states to 37825 states and 101458 transitions. [2022-02-10 03:58:18,981 INFO L78 Accepts]: Start accepts. Automaton has 37825 states and 101458 transitions. Word has length 28 [2022-02-10 03:58:18,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:58:18,981 INFO L470 AbstractCegarLoop]: Abstraction has 37825 states and 101458 transitions. [2022-02-10 03:58:18,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:58:18,981 INFO L276 IsEmpty]: Start isEmpty. Operand 37825 states and 101458 transitions. [2022-02-10 03:58:19,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:58:19,029 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:58:19,029 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:58:19,044 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Ended with exit code 0 [2022-02-10 03:58:19,229 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,SelfDestructingSolverStorable110 [2022-02-10 03:58:19,229 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:58:19,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:58:19,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1155329728, now seen corresponding path program 74 times [2022-02-10 03:58:19,230 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:58:19,230 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649813446] [2022-02-10 03:58:19,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:58:19,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:58:19,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:58:19,278 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:58:19,279 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:58:19,279 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649813446] [2022-02-10 03:58:19,279 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649813446] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:58:19,279 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072490430] [2022-02-10 03:58:19,279 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:58:19,279 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:58:19,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:58:19,280 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) [2022-02-10 03:58:19,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2022-02-10 03:58:19,300 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:58:19,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:58:19,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 03:58:19,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:58:19,359 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:58:19,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:58:19,414 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:58:19,414 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072490430] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:58:19,415 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:58:19,415 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 12 [2022-02-10 03:58:19,415 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604765900] [2022-02-10 03:58:19,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:58:19,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-10 03:58:19,415 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:58:19,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-10 03:58:19,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-02-10 03:58:19,415 INFO L87 Difference]: Start difference. First operand 37825 states and 101458 transitions. Second operand has 12 states, 12 states have (on average 3.5) internal successors, (42), 12 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) [2022-02-10 03:58:19,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:58:19,792 INFO L93 Difference]: Finished difference Result 41876 states and 109921 transitions. [2022-02-10 03:58:19,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 03:58:19,793 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 12 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 28 [2022-02-10 03:58:19,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:58:19,894 INFO L225 Difference]: With dead ends: 41876 [2022-02-10 03:58:19,895 INFO L226 Difference]: Without dead ends: 41876 [2022-02-10 03:58:19,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 51 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=199, Invalid=451, Unknown=0, NotChecked=0, Total=650 [2022-02-10 03:58:19,895 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 116 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:58:19,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 133 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:58:19,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41876 states. [2022-02-10 03:58:20,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41876 to 38737. [2022-02-10 03:58:20,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38737 states, 38736 states have (on average 2.682285212722016) internal successors, (103901), 38736 states have internal predecessors, (103901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:58:20,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38737 states to 38737 states and 103901 transitions. [2022-02-10 03:58:20,691 INFO L78 Accepts]: Start accepts. Automaton has 38737 states and 103901 transitions. Word has length 28 [2022-02-10 03:58:20,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:58:20,691 INFO L470 AbstractCegarLoop]: Abstraction has 38737 states and 103901 transitions. [2022-02-10 03:58:20,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 12 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) [2022-02-10 03:58:20,691 INFO L276 IsEmpty]: Start isEmpty. Operand 38737 states and 103901 transitions. [2022-02-10 03:58:20,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:58:20,742 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:58:20,742 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:58:20,757 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Forceful destruction successful, exit code 0 [2022-02-10 03:58:20,942 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,SelfDestructingSolverStorable111 [2022-02-10 03:58:20,943 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:58:20,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:58:20,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1632581576, now seen corresponding path program 75 times [2022-02-10 03:58:20,943 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:58:20,943 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354360088] [2022-02-10 03:58:20,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:58:20,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:58:20,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:58:20,980 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:58:20,980 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:58:20,980 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354360088] [2022-02-10 03:58:20,980 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354360088] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:58:20,980 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824777043] [2022-02-10 03:58:20,980 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:58:20,980 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:58:20,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:58:20,981 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) [2022-02-10 03:58:20,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2022-02-10 03:58:21,002 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 03:58:21,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:58:21,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 03:58:21,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:58:21,071 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:58:21,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:58:21,140 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:58:21,140 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824777043] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:58:21,140 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:58:21,140 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2022-02-10 03:58:21,140 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926790826] [2022-02-10 03:58:21,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:58:21,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-10 03:58:21,140 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:58:21,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-10 03:58:21,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-02-10 03:58:21,141 INFO L87 Difference]: Start difference. First operand 38737 states and 103901 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:58:21,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:58:21,786 INFO L93 Difference]: Finished difference Result 44536 states and 117625 transitions. [2022-02-10 03:58:21,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-10 03:58:21,787 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:58:21,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:58:21,905 INFO L225 Difference]: With dead ends: 44536 [2022-02-10 03:58:21,906 INFO L226 Difference]: Without dead ends: 44533 [2022-02-10 03:58:21,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=423, Invalid=1469, Unknown=0, NotChecked=0, Total=1892 [2022-02-10 03:58:21,906 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 313 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:58:21,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [313 Valid, 135 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 03:58:21,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44533 states. [2022-02-10 03:58:22,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44533 to 38775. [2022-02-10 03:58:22,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38775 states, 38774 states have (on average 2.681848661474184) internal successors, (103986), 38774 states have internal predecessors, (103986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:58:22,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38775 states to 38775 states and 103986 transitions. [2022-02-10 03:58:22,799 INFO L78 Accepts]: Start accepts. Automaton has 38775 states and 103986 transitions. Word has length 28 [2022-02-10 03:58:22,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:58:22,799 INFO L470 AbstractCegarLoop]: Abstraction has 38775 states and 103986 transitions. [2022-02-10 03:58:22,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:58:22,799 INFO L276 IsEmpty]: Start isEmpty. Operand 38775 states and 103986 transitions. [2022-02-10 03:58:22,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:58:22,848 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:58:22,848 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:58:22,864 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Ended with exit code 0 [2022-02-10 03:58:23,049 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,SelfDestructingSolverStorable112 [2022-02-10 03:58:23,049 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:58:23,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:58:23,049 INFO L85 PathProgramCache]: Analyzing trace with hash -501936704, now seen corresponding path program 76 times [2022-02-10 03:58:23,049 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:58:23,049 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435570100] [2022-02-10 03:58:23,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:58:23,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:58:23,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:58:23,092 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:58:23,092 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:58:23,092 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435570100] [2022-02-10 03:58:23,092 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435570100] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:58:23,092 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919147804] [2022-02-10 03:58:23,093 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:58:23,093 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:58:23,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:58:23,094 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) [2022-02-10 03:58:23,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2022-02-10 03:58:23,114 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:58:23,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:58:23,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 03:58:23,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:58:23,174 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:58:23,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:58:23,231 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:58:23,231 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919147804] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:58:23,231 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:58:23,231 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 13 [2022-02-10 03:58:23,231 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185645686] [2022-02-10 03:58:23,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:58:23,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-10 03:58:23,231 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:58:23,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-10 03:58:23,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-02-10 03:58:23,232 INFO L87 Difference]: Start difference. First operand 38775 states and 103986 transitions. Second operand has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 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) [2022-02-10 03:58:23,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:58:23,763 INFO L93 Difference]: Finished difference Result 42177 states and 110706 transitions. [2022-02-10 03:58:23,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-10 03:58:23,763 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 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 28 [2022-02-10 03:58:23,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:58:23,859 INFO L225 Difference]: With dead ends: 42177 [2022-02-10 03:58:23,859 INFO L226 Difference]: Without dead ends: 42177 [2022-02-10 03:58:23,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 50 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=251, Invalid=561, Unknown=0, NotChecked=0, Total=812 [2022-02-10 03:58:23,860 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 110 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:58:23,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 97 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:58:23,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42177 states. [2022-02-10 03:58:24,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42177 to 38778. [2022-02-10 03:58:24,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38778 states, 38777 states have (on average 2.681099620909302) internal successors, (103965), 38777 states have internal predecessors, (103965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:58:24,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38778 states to 38778 states and 103965 transitions. [2022-02-10 03:58:24,583 INFO L78 Accepts]: Start accepts. Automaton has 38778 states and 103965 transitions. Word has length 28 [2022-02-10 03:58:24,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:58:24,583 INFO L470 AbstractCegarLoop]: Abstraction has 38778 states and 103965 transitions. [2022-02-10 03:58:24,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 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) [2022-02-10 03:58:24,583 INFO L276 IsEmpty]: Start isEmpty. Operand 38778 states and 103965 transitions. [2022-02-10 03:58:24,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:58:24,629 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:58:24,629 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:58:24,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Forceful destruction successful, exit code 0 [2022-02-10 03:58:24,829 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,SelfDestructingSolverStorable113 [2022-02-10 03:58:24,829 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:58:24,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:58:24,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1773022916, now seen corresponding path program 77 times [2022-02-10 03:58:24,830 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:58:24,830 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832559096] [2022-02-10 03:58:24,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:58:24,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:58:24,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:58:24,870 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:58:24,870 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:58:24,870 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832559096] [2022-02-10 03:58:24,871 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832559096] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:58:24,871 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974626072] [2022-02-10 03:58:24,871 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 03:58:24,871 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:58:24,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:58:24,872 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) [2022-02-10 03:58:24,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2022-02-10 03:58:24,893 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-10 03:58:24,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:58:24,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 03:58:24,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:58:25,005 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:58:25,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:58:25,116 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:58:25,116 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974626072] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:58:25,116 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:58:25,116 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 22 [2022-02-10 03:58:25,116 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835029353] [2022-02-10 03:58:25,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:58:25,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 03:58:25,117 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:58:25,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 03:58:25,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2022-02-10 03:58:25,117 INFO L87 Difference]: Start difference. First operand 38778 states and 103965 transitions. Second operand has 22 states, 22 states have (on average 2.8181818181818183) internal successors, (62), 22 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:58:28,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:58:28,095 INFO L93 Difference]: Finished difference Result 74380 states and 195382 transitions. [2022-02-10 03:58:28,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2022-02-10 03:58:28,096 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.8181818181818183) internal successors, (62), 22 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:58:28,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:58:28,325 INFO L225 Difference]: With dead ends: 74380 [2022-02-10 03:58:28,325 INFO L226 Difference]: Without dead ends: 74380 [2022-02-10 03:58:28,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11496 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=5662, Invalid=21398, Unknown=0, NotChecked=0, Total=27060 [2022-02-10 03:58:28,329 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 706 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 1507 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 706 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 1645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 1507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 03:58:28,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [706 Valid, 426 Invalid, 1645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 1507 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-10 03:58:28,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74380 states. [2022-02-10 03:58:29,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74380 to 41812. [2022-02-10 03:58:29,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41812 states, 41811 states have (on average 2.704455765229246) internal successors, (113076), 41811 states have internal predecessors, (113076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:58:29,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41812 states to 41812 states and 113076 transitions. [2022-02-10 03:58:29,759 INFO L78 Accepts]: Start accepts. Automaton has 41812 states and 113076 transitions. Word has length 28 [2022-02-10 03:58:29,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:58:29,759 INFO L470 AbstractCegarLoop]: Abstraction has 41812 states and 113076 transitions. [2022-02-10 03:58:29,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.8181818181818183) internal successors, (62), 22 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:58:29,759 INFO L276 IsEmpty]: Start isEmpty. Operand 41812 states and 113076 transitions. [2022-02-10 03:58:29,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:58:29,815 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:58:29,815 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:58:29,830 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Ended with exit code 0 [2022-02-10 03:58:30,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114,114 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:58:30,017 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:58:30,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:58:30,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1254186894, now seen corresponding path program 78 times [2022-02-10 03:58:30,017 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:58:30,017 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123118857] [2022-02-10 03:58:30,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:58:30,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:58:30,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:58:30,060 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:58:30,060 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:58:30,060 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123118857] [2022-02-10 03:58:30,060 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123118857] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:58:30,060 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465725148] [2022-02-10 03:58:30,060 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 03:58:30,061 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:58:30,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:58:30,062 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) [2022-02-10 03:58:30,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2022-02-10 03:58:30,084 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-10 03:58:30,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:58:30,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 03:58:30,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:58:30,188 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:58:30,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:58:30,284 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:58:30,285 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465725148] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:58:30,285 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:58:30,285 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 20 [2022-02-10 03:58:30,285 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044474091] [2022-02-10 03:58:30,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:58:30,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 03:58:30,285 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:58:30,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 03:58:30,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2022-02-10 03:58:30,285 INFO L87 Difference]: Start difference. First operand 41812 states and 113076 transitions. Second operand has 20 states, 20 states have (on average 2.7) internal successors, (54), 20 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) [2022-02-10 03:58:32,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:58:32,484 INFO L93 Difference]: Finished difference Result 60713 states and 155592 transitions. [2022-02-10 03:58:32,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2022-02-10 03:58:32,484 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.7) internal successors, (54), 20 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 28 [2022-02-10 03:58:32,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:58:32,669 INFO L225 Difference]: With dead ends: 60713 [2022-02-10 03:58:32,670 INFO L226 Difference]: Without dead ends: 60713 [2022-02-10 03:58:32,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6611 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=3388, Invalid=13382, Unknown=0, NotChecked=0, Total=16770 [2022-02-10 03:58:32,672 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 698 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 1028 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 1183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 1028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 03:58:32,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [698 Valid, 318 Invalid, 1183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 1028 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 03:58:32,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60713 states. [2022-02-10 03:58:34,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60713 to 41812. [2022-02-10 03:58:34,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41812 states, 41811 states have (on average 2.704455765229246) internal successors, (113076), 41811 states have internal predecessors, (113076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:58:34,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41812 states to 41812 states and 113076 transitions. [2022-02-10 03:58:34,365 INFO L78 Accepts]: Start accepts. Automaton has 41812 states and 113076 transitions. Word has length 28 [2022-02-10 03:58:34,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:58:34,365 INFO L470 AbstractCegarLoop]: Abstraction has 41812 states and 113076 transitions. [2022-02-10 03:58:34,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.7) internal successors, (54), 20 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) [2022-02-10 03:58:34,365 INFO L276 IsEmpty]: Start isEmpty. Operand 41812 states and 113076 transitions. [2022-02-10 03:58:34,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:58:34,422 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:58:34,423 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:58:34,438 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Forceful destruction successful, exit code 0 [2022-02-10 03:58:34,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115,115 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:58:34,623 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:58:34,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:58:34,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1478153354, now seen corresponding path program 79 times [2022-02-10 03:58:34,624 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:58:34,624 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139705460] [2022-02-10 03:58:34,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:58:34,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:58:34,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:58:34,665 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:58:34,665 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:58:34,665 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139705460] [2022-02-10 03:58:34,666 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139705460] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:58:34,666 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846650810] [2022-02-10 03:58:34,666 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 03:58:34,666 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:58:34,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:58:34,667 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) [2022-02-10 03:58:34,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2022-02-10 03:58:34,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:58:34,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 03:58:34,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:58:34,786 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:58:34,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:58:34,890 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:58:34,890 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846650810] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:58:34,890 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:58:34,890 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 20 [2022-02-10 03:58:34,890 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319265984] [2022-02-10 03:58:34,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:58:34,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 03:58:34,890 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:58:34,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 03:58:34,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2022-02-10 03:58:34,891 INFO L87 Difference]: Start difference. First operand 41812 states and 113076 transitions. Second operand has 20 states, 20 states have (on average 2.75) internal successors, (55), 20 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:58:36,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:58:36,559 INFO L93 Difference]: Finished difference Result 55325 states and 145109 transitions. [2022-02-10 03:58:36,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-02-10 03:58:36,559 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.75) internal successors, (55), 20 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:58:36,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:58:36,729 INFO L225 Difference]: With dead ends: 55325 [2022-02-10 03:58:36,729 INFO L226 Difference]: Without dead ends: 55325 [2022-02-10 03:58:36,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3733 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1907, Invalid=7993, Unknown=0, NotChecked=0, Total=9900 [2022-02-10 03:58:36,731 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 473 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 03:58:36,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [473 Valid, 383 Invalid, 1164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 1015 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 03:58:36,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55325 states. [2022-02-10 03:58:38,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55325 to 42071. [2022-02-10 03:58:38,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42071 states, 42070 states have (on average 2.705181839790825) internal successors, (113807), 42070 states have internal predecessors, (113807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:58:38,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42071 states to 42071 states and 113807 transitions. [2022-02-10 03:58:38,424 INFO L78 Accepts]: Start accepts. Automaton has 42071 states and 113807 transitions. Word has length 28 [2022-02-10 03:58:38,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:58:38,424 INFO L470 AbstractCegarLoop]: Abstraction has 42071 states and 113807 transitions. [2022-02-10 03:58:38,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.75) internal successors, (55), 20 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:58:38,424 INFO L276 IsEmpty]: Start isEmpty. Operand 42071 states and 113807 transitions. [2022-02-10 03:58:38,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:58:38,473 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:58:38,473 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:58:38,488 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Ended with exit code 0 [2022-02-10 03:58:38,674 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,SelfDestructingSolverStorable116 [2022-02-10 03:58:38,675 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:58:38,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:58:38,675 INFO L85 PathProgramCache]: Analyzing trace with hash 353344692, now seen corresponding path program 80 times [2022-02-10 03:58:38,675 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:58:38,675 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746839524] [2022-02-10 03:58:38,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:58:38,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:58:38,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:58:38,715 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:58:38,715 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:58:38,715 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746839524] [2022-02-10 03:58:38,715 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746839524] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:58:38,716 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928209995] [2022-02-10 03:58:38,716 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:58:38,716 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:58:38,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:58:38,717 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) [2022-02-10 03:58:38,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2022-02-10 03:58:38,736 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:58:38,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:58:38,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 03:58:38,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:58:38,843 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:58:38,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:58:38,958 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:58:38,958 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928209995] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:58:38,958 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:58:38,958 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 22 [2022-02-10 03:58:38,958 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481185424] [2022-02-10 03:58:38,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:58:38,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 03:58:38,958 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:58:38,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 03:58:38,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2022-02-10 03:58:38,959 INFO L87 Difference]: Start difference. First operand 42071 states and 113807 transitions. Second operand has 22 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:58:41,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:58:41,773 INFO L93 Difference]: Finished difference Result 89862 states and 234424 transitions. [2022-02-10 03:58:41,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2022-02-10 03:58:41,773 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:58:41,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:58:42,050 INFO L225 Difference]: With dead ends: 89862 [2022-02-10 03:58:42,050 INFO L226 Difference]: Without dead ends: 89862 [2022-02-10 03:58:42,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9898 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=5028, Invalid=17322, Unknown=0, NotChecked=0, Total=22350 [2022-02-10 03:58:42,051 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 776 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 1090 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 1267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 1090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 03:58:42,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [776 Valid, 316 Invalid, 1267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 1090 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 03:58:42,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89862 states. [2022-02-10 03:58:43,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89862 to 53927. [2022-02-10 03:58:43,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53927 states, 53926 states have (on average 2.749490041909283) internal successors, (148269), 53926 states have internal predecessors, (148269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:58:43,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53927 states to 53927 states and 148269 transitions. [2022-02-10 03:58:43,967 INFO L78 Accepts]: Start accepts. Automaton has 53927 states and 148269 transitions. Word has length 28 [2022-02-10 03:58:43,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:58:43,968 INFO L470 AbstractCegarLoop]: Abstraction has 53927 states and 148269 transitions. [2022-02-10 03:58:43,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:58:43,968 INFO L276 IsEmpty]: Start isEmpty. Operand 53927 states and 148269 transitions. [2022-02-10 03:58:44,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:58:44,038 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:58:44,038 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:58:44,054 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Ended with exit code 0 [2022-02-10 03:58:44,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117,117 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:58:44,239 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:58:44,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:58:44,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1496402892, now seen corresponding path program 81 times [2022-02-10 03:58:44,239 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:58:44,239 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786292698] [2022-02-10 03:58:44,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:58:44,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:58:44,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:58:44,269 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:58:44,269 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:58:44,269 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786292698] [2022-02-10 03:58:44,269 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786292698] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:58:44,269 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732530404] [2022-02-10 03:58:44,269 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:58:44,269 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:58:44,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:58:44,270 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) [2022-02-10 03:58:44,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2022-02-10 03:58:44,290 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 03:58:44,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:58:44,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-10 03:58:44,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:58:44,365 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:58:44,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:58:44,454 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:58:44,454 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732530404] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:58:44,454 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:58:44,454 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 15 [2022-02-10 03:58:44,454 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30522316] [2022-02-10 03:58:44,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:58:44,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-10 03:58:44,455 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:58:44,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-10 03:58:44,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-02-10 03:58:44,455 INFO L87 Difference]: Start difference. First operand 53927 states and 148269 transitions. Second operand has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 15 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:58:45,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:58:45,117 INFO L93 Difference]: Finished difference Result 62599 states and 165173 transitions. [2022-02-10 03:58:45,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-10 03:58:45,118 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 15 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:58:45,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:58:45,310 INFO L225 Difference]: With dead ends: 62599 [2022-02-10 03:58:45,310 INFO L226 Difference]: Without dead ends: 62597 [2022-02-10 03:58:45,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=203, Invalid=349, Unknown=0, NotChecked=0, Total=552 [2022-02-10 03:58:45,310 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 264 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:58:45,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 74 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:58:45,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62597 states. [2022-02-10 03:58:46,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62597 to 53965. [2022-02-10 03:58:46,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53965 states, 53964 states have (on average 2.7482210362463864) internal successors, (148305), 53964 states have internal predecessors, (148305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:58:46,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53965 states to 53965 states and 148305 transitions. [2022-02-10 03:58:46,918 INFO L78 Accepts]: Start accepts. Automaton has 53965 states and 148305 transitions. Word has length 28 [2022-02-10 03:58:46,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:58:46,918 INFO L470 AbstractCegarLoop]: Abstraction has 53965 states and 148305 transitions. [2022-02-10 03:58:46,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 15 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:58:46,918 INFO L276 IsEmpty]: Start isEmpty. Operand 53965 states and 148305 transitions. [2022-02-10 03:58:46,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:58:46,984 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:58:46,984 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:58:46,999 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Ended with exit code 0 [2022-02-10 03:58:47,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118,118 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:58:47,184 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:58:47,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:58:47,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1155955964, now seen corresponding path program 82 times [2022-02-10 03:58:47,184 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:58:47,185 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565033771] [2022-02-10 03:58:47,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:58:47,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:58:47,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:58:47,225 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:58:47,225 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:58:47,225 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565033771] [2022-02-10 03:58:47,226 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565033771] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:58:47,226 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981032125] [2022-02-10 03:58:47,226 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:58:47,226 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:58:47,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:58:47,227 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) [2022-02-10 03:58:47,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Waiting until timeout for monitored process [2022-02-10 03:58:47,246 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:58:47,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:58:47,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 03:58:47,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:58:47,335 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:58:47,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:58:47,433 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:58:47,434 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981032125] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:58:47,434 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:58:47,434 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 20 [2022-02-10 03:58:47,434 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646628192] [2022-02-10 03:58:47,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:58:47,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 03:58:47,434 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:58:47,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 03:58:47,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=264, Unknown=0, NotChecked=0, Total=380 [2022-02-10 03:58:47,434 INFO L87 Difference]: Start difference. First operand 53965 states and 148305 transitions. Second operand has 20 states, 20 states have (on average 2.75) internal successors, (55), 20 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:58:49,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:58:49,340 INFO L93 Difference]: Finished difference Result 89565 states and 232877 transitions. [2022-02-10 03:58:49,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2022-02-10 03:58:49,341 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.75) internal successors, (55), 20 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:58:49,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:58:49,734 INFO L225 Difference]: With dead ends: 89565 [2022-02-10 03:58:49,735 INFO L226 Difference]: Without dead ends: 89564 [2022-02-10 03:58:49,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4957 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2836, Invalid=9596, Unknown=0, NotChecked=0, Total=12432 [2022-02-10 03:58:49,736 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 745 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 1031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 03:58:49,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [745 Valid, 243 Invalid, 1031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 03:58:49,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89564 states. [2022-02-10 03:58:51,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89564 to 53983. [2022-02-10 03:58:51,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53983 states, 53982 states have (on average 2.7479159719906634) internal successors, (148338), 53982 states have internal predecessors, (148338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:58:51,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53983 states to 53983 states and 148338 transitions. [2022-02-10 03:58:51,510 INFO L78 Accepts]: Start accepts. Automaton has 53983 states and 148338 transitions. Word has length 28 [2022-02-10 03:58:51,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:58:51,510 INFO L470 AbstractCegarLoop]: Abstraction has 53983 states and 148338 transitions. [2022-02-10 03:58:51,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.75) internal successors, (55), 20 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:58:51,510 INFO L276 IsEmpty]: Start isEmpty. Operand 53983 states and 148338 transitions. [2022-02-10 03:58:51,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:58:51,787 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:58:51,788 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:58:51,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Forceful destruction successful, exit code 0 [2022-02-10 03:58:52,003 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,SelfDestructingSolverStorable119 [2022-02-10 03:58:52,003 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:58:52,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:58:52,003 INFO L85 PathProgramCache]: Analyzing trace with hash -512478848, now seen corresponding path program 83 times [2022-02-10 03:58:52,003 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:58:52,003 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764883538] [2022-02-10 03:58:52,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:58:52,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:58:52,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:58:52,046 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:58:52,047 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:58:52,047 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764883538] [2022-02-10 03:58:52,047 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764883538] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:58:52,047 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133887981] [2022-02-10 03:58:52,047 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 03:58:52,047 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:58:52,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:58:52,048 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) [2022-02-10 03:58:52,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process [2022-02-10 03:58:52,071 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 03:58:52,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:58:52,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 03:58:52,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:58:52,155 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:58:52,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:58:52,246 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:58:52,246 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133887981] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:58:52,246 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:58:52,246 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 18 [2022-02-10 03:58:52,246 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869944002] [2022-02-10 03:58:52,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:58:52,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-10 03:58:52,247 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:58:52,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-10 03:58:52,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2022-02-10 03:58:52,247 INFO L87 Difference]: Start difference. First operand 53983 states and 148338 transitions. Second operand has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 18 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:58:53,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:58:53,800 INFO L93 Difference]: Finished difference Result 85942 states and 226443 transitions. [2022-02-10 03:58:53,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-02-10 03:58:53,800 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 18 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:58:53,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:58:54,038 INFO L225 Difference]: With dead ends: 85942 [2022-02-10 03:58:54,038 INFO L226 Difference]: Without dead ends: 85939 [2022-02-10 03:58:54,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2740 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1617, Invalid=5693, Unknown=0, NotChecked=0, Total=7310 [2022-02-10 03:58:54,039 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 484 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 03:58:54,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [484 Valid, 236 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 840 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 03:58:54,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85939 states. [2022-02-10 03:58:55,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85939 to 56797. [2022-02-10 03:58:55,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56797 states, 56796 states have (on average 2.758944291851539) internal successors, (156697), 56796 states have internal predecessors, (156697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:58:56,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56797 states to 56797 states and 156697 transitions. [2022-02-10 03:58:56,102 INFO L78 Accepts]: Start accepts. Automaton has 56797 states and 156697 transitions. Word has length 28 [2022-02-10 03:58:56,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:58:56,102 INFO L470 AbstractCegarLoop]: Abstraction has 56797 states and 156697 transitions. [2022-02-10 03:58:56,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 18 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:58:56,102 INFO L276 IsEmpty]: Start isEmpty. Operand 56797 states and 156697 transitions. [2022-02-10 03:58:56,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:58:56,173 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:58:56,173 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:58:56,188 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Ended with exit code 0 [2022-02-10 03:58:56,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,120 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:58:56,373 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:58:56,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:58:56,374 INFO L85 PathProgramCache]: Analyzing trace with hash -587491144, now seen corresponding path program 37 times [2022-02-10 03:58:56,374 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:58:56,374 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417509971] [2022-02-10 03:58:56,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:58:56,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:58:56,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:58:56,420 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:58:56,421 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:58:56,421 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417509971] [2022-02-10 03:58:56,421 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417509971] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:58:56,421 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654590516] [2022-02-10 03:58:56,421 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 03:58:56,421 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:58:56,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:58:56,422 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) [2022-02-10 03:58:56,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Waiting until timeout for monitored process [2022-02-10 03:58:56,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:58:56,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 03:58:56,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:58:56,500 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:58:56,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:58:56,560 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:58:56,560 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654590516] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:58:56,560 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:58:56,560 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2022-02-10 03:58:56,560 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502052003] [2022-02-10 03:58:56,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:58:56,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-10 03:58:56,561 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:58:56,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-10 03:58:56,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-02-10 03:58:56,561 INFO L87 Difference]: Start difference. First operand 56797 states and 156697 transitions. Second operand has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 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) [2022-02-10 03:58:57,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:58:57,316 INFO L93 Difference]: Finished difference Result 63156 states and 172615 transitions. [2022-02-10 03:58:57,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-02-10 03:58:57,317 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 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 28 [2022-02-10 03:58:57,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:58:57,507 INFO L225 Difference]: With dead ends: 63156 [2022-02-10 03:58:57,507 INFO L226 Difference]: Without dead ends: 63156 [2022-02-10 03:58:57,508 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=325, Invalid=935, Unknown=0, NotChecked=0, Total=1260 [2022-02-10 03:58:57,508 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 126 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:58:57,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 151 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 03:58:57,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63156 states. [2022-02-10 03:58:58,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63156 to 56948. [2022-02-10 03:58:58,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56948 states, 56947 states have (on average 2.7572128470332062) internal successors, (157015), 56947 states have internal predecessors, (157015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:58:59,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56948 states to 56948 states and 157015 transitions. [2022-02-10 03:58:59,128 INFO L78 Accepts]: Start accepts. Automaton has 56948 states and 157015 transitions. Word has length 28 [2022-02-10 03:58:59,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:58:59,128 INFO L470 AbstractCegarLoop]: Abstraction has 56948 states and 157015 transitions. [2022-02-10 03:58:59,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 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) [2022-02-10 03:58:59,128 INFO L276 IsEmpty]: Start isEmpty. Operand 56948 states and 157015 transitions. [2022-02-10 03:58:59,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:58:59,193 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:58:59,193 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:58:59,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Forceful destruction successful, exit code 0 [2022-02-10 03:58:59,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,121 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:58:59,395 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:58:59,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:58:59,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1821163592, now seen corresponding path program 38 times [2022-02-10 03:58:59,395 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:58:59,395 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491036739] [2022-02-10 03:58:59,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:58:59,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:58:59,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:58:59,435 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:58:59,435 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:58:59,436 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491036739] [2022-02-10 03:58:59,436 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491036739] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:58:59,436 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110126758] [2022-02-10 03:58:59,436 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:58:59,436 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:58:59,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:58:59,437 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) [2022-02-10 03:58:59,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Waiting until timeout for monitored process [2022-02-10 03:58:59,456 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:58:59,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:58:59,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 03:58:59,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:58:59,560 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:58:59,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:58:59,614 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:58:59,614 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110126758] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:58:59,614 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:58:59,614 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 18 [2022-02-10 03:58:59,614 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432096257] [2022-02-10 03:58:59,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:58:59,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 03:58:59,614 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:58:59,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 03:58:59,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2022-02-10 03:58:59,615 INFO L87 Difference]: Start difference. First operand 56948 states and 157015 transitions. Second operand has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 18 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:59:00,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:59:00,243 INFO L93 Difference]: Finished difference Result 58570 states and 159977 transitions. [2022-02-10 03:59:00,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-10 03:59:00,243 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 18 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:59:00,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:59:00,556 INFO L225 Difference]: With dead ends: 58570 [2022-02-10 03:59:00,556 INFO L226 Difference]: Without dead ends: 58560 [2022-02-10 03:59:00,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=391, Invalid=1331, Unknown=0, NotChecked=0, Total=1722 [2022-02-10 03:59:00,557 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 195 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:59:00,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 144 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 03:59:00,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58560 states. [2022-02-10 03:59:01,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58560 to 55471. [2022-02-10 03:59:01,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55471 states, 55470 states have (on average 2.7539210383991346) internal successors, (152760), 55470 states have internal predecessors, (152760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:59:01,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55471 states to 55471 states and 152760 transitions. [2022-02-10 03:59:01,775 INFO L78 Accepts]: Start accepts. Automaton has 55471 states and 152760 transitions. Word has length 28 [2022-02-10 03:59:01,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:59:01,775 INFO L470 AbstractCegarLoop]: Abstraction has 55471 states and 152760 transitions. [2022-02-10 03:59:01,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 18 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:59:01,775 INFO L276 IsEmpty]: Start isEmpty. Operand 55471 states and 152760 transitions. [2022-02-10 03:59:01,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:59:01,839 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:59:01,839 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:59:01,855 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Ended with exit code 0 [2022-02-10 03:59:02,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2022-02-10 03:59:02,040 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:59:02,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:59:02,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1447997512, now seen corresponding path program 39 times [2022-02-10 03:59:02,040 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:59:02,040 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171444304] [2022-02-10 03:59:02,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:59:02,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:59:02,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:59:02,076 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:59:02,076 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:59:02,076 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171444304] [2022-02-10 03:59:02,076 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171444304] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:59:02,076 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824373813] [2022-02-10 03:59:02,076 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:59:02,076 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:59:02,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:59:02,077 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) [2022-02-10 03:59:02,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Waiting until timeout for monitored process [2022-02-10 03:59:02,097 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-10 03:59:02,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:59:02,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 03:59:02,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:59:02,151 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:59:02,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:59:02,204 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:59:02,204 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824373813] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:59:02,204 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:59:02,204 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2022-02-10 03:59:02,204 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166812354] [2022-02-10 03:59:02,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:59:02,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-10 03:59:02,204 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:59:02,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-10 03:59:02,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-02-10 03:59:02,205 INFO L87 Difference]: Start difference. First operand 55471 states and 152760 transitions. Second operand has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 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) [2022-02-10 03:59:02,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:59:02,881 INFO L93 Difference]: Finished difference Result 61468 states and 167861 transitions. [2022-02-10 03:59:02,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-10 03:59:02,881 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 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 28 [2022-02-10 03:59:02,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:59:03,067 INFO L225 Difference]: With dead ends: 61468 [2022-02-10 03:59:03,067 INFO L226 Difference]: Without dead ends: 61465 [2022-02-10 03:59:03,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=212, Invalid=658, Unknown=0, NotChecked=0, Total=870 [2022-02-10 03:59:03,068 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 156 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:59:03,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 122 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:59:03,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61465 states. [2022-02-10 03:59:04,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61465 to 55503. [2022-02-10 03:59:04,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55503 states, 55502 states have (on average 2.753666534539296) internal successors, (152834), 55502 states have internal predecessors, (152834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:59:04,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55503 states to 55503 states and 152834 transitions. [2022-02-10 03:59:04,620 INFO L78 Accepts]: Start accepts. Automaton has 55503 states and 152834 transitions. Word has length 28 [2022-02-10 03:59:04,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:59:04,620 INFO L470 AbstractCegarLoop]: Abstraction has 55503 states and 152834 transitions. [2022-02-10 03:59:04,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 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) [2022-02-10 03:59:04,620 INFO L276 IsEmpty]: Start isEmpty. Operand 55503 states and 152834 transitions. [2022-02-10 03:59:04,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:59:04,686 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:59:04,686 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:59:04,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Forceful destruction successful, exit code 0 [2022-02-10 03:59:04,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123,123 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:59:04,887 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:59:04,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:59:04,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1220751168, now seen corresponding path program 84 times [2022-02-10 03:59:04,887 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:59:04,887 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096685189] [2022-02-10 03:59:04,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:59:04,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:59:04,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:59:04,927 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:59:04,927 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:59:04,927 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096685189] [2022-02-10 03:59:04,927 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096685189] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:59:04,927 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184265171] [2022-02-10 03:59:04,927 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 03:59:04,927 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:59:04,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:59:04,928 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) [2022-02-10 03:59:04,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Waiting until timeout for monitored process [2022-02-10 03:59:04,948 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-10 03:59:04,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:59:04,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 03:59:04,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:59:05,016 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:59:05,016 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:59:05,081 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:59:05,081 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184265171] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:59:05,081 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:59:05,081 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 15 [2022-02-10 03:59:05,081 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444902836] [2022-02-10 03:59:05,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:59:05,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-10 03:59:05,081 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:59:05,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-10 03:59:05,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2022-02-10 03:59:05,081 INFO L87 Difference]: Start difference. First operand 55503 states and 152834 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:59:06,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:59:06,158 INFO L93 Difference]: Finished difference Result 63634 states and 172434 transitions. [2022-02-10 03:59:06,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-02-10 03:59:06,158 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:59:06,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:59:06,356 INFO L225 Difference]: With dead ends: 63634 [2022-02-10 03:59:06,357 INFO L226 Difference]: Without dead ends: 63634 [2022-02-10 03:59:06,357 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1131 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=789, Invalid=2633, Unknown=0, NotChecked=0, Total=3422 [2022-02-10 03:59:06,357 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 291 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:59:06,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [291 Valid, 223 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 03:59:06,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63634 states. [2022-02-10 03:59:07,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63634 to 55592. [2022-02-10 03:59:07,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55592 states, 55591 states have (on average 2.7528376895540645) internal successors, (153033), 55591 states have internal predecessors, (153033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:59:08,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55592 states to 55592 states and 153033 transitions. [2022-02-10 03:59:08,139 INFO L78 Accepts]: Start accepts. Automaton has 55592 states and 153033 transitions. Word has length 28 [2022-02-10 03:59:08,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:59:08,139 INFO L470 AbstractCegarLoop]: Abstraction has 55592 states and 153033 transitions. [2022-02-10 03:59:08,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:59:08,139 INFO L276 IsEmpty]: Start isEmpty. Operand 55592 states and 153033 transitions. [2022-02-10 03:59:08,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:59:08,211 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:59:08,211 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:59:08,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Forceful destruction successful, exit code 0 [2022-02-10 03:59:08,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2022-02-10 03:59:08,412 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:59:08,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:59:08,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1450159552, now seen corresponding path program 85 times [2022-02-10 03:59:08,412 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:59:08,412 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319586918] [2022-02-10 03:59:08,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:59:08,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:59:08,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:59:08,447 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:59:08,447 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:59:08,447 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319586918] [2022-02-10 03:59:08,447 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319586918] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:59:08,448 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908910771] [2022-02-10 03:59:08,448 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 03:59:08,448 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:59:08,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:59:08,449 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) [2022-02-10 03:59:08,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Waiting until timeout for monitored process [2022-02-10 03:59:08,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:59:08,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 03:59:08,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:59:08,541 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:59:08,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:59:08,603 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:59:08,603 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908910771] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:59:08,603 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:59:08,603 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2022-02-10 03:59:08,603 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985984816] [2022-02-10 03:59:08,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:59:08,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-10 03:59:08,603 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:59:08,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-10 03:59:08,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2022-02-10 03:59:08,604 INFO L87 Difference]: Start difference. First operand 55592 states and 153033 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:59:09,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:59:09,334 INFO L93 Difference]: Finished difference Result 63379 states and 171907 transitions. [2022-02-10 03:59:09,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-02-10 03:59:09,334 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:59:09,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:59:09,687 INFO L225 Difference]: With dead ends: 63379 [2022-02-10 03:59:09,687 INFO L226 Difference]: Without dead ends: 63378 [2022-02-10 03:59:09,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 705 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=549, Invalid=1803, Unknown=0, NotChecked=0, Total=2352 [2022-02-10 03:59:09,687 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 256 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:59:09,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [256 Valid, 184 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 03:59:09,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63378 states. [2022-02-10 03:59:10,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63378 to 55533. [2022-02-10 03:59:10,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55533 states, 55532 states have (on average 2.7534574659655693) internal successors, (152905), 55532 states have internal predecessors, (152905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:59:11,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55533 states to 55533 states and 152905 transitions. [2022-02-10 03:59:11,076 INFO L78 Accepts]: Start accepts. Automaton has 55533 states and 152905 transitions. Word has length 28 [2022-02-10 03:59:11,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:59:11,076 INFO L470 AbstractCegarLoop]: Abstraction has 55533 states and 152905 transitions. [2022-02-10 03:59:11,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:59:11,076 INFO L276 IsEmpty]: Start isEmpty. Operand 55533 states and 152905 transitions. [2022-02-10 03:59:11,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:59:11,151 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:59:11,151 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:59:11,166 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Ended with exit code 0 [2022-02-10 03:59:11,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 125 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2022-02-10 03:59:11,352 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:59:11,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:59:11,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1894675520, now seen corresponding path program 86 times [2022-02-10 03:59:11,352 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:59:11,352 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339712814] [2022-02-10 03:59:11,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:59:11,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:59:11,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:59:11,405 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:59:11,405 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:59:11,405 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339712814] [2022-02-10 03:59:11,405 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339712814] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:59:11,405 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237221140] [2022-02-10 03:59:11,405 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:59:11,406 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:59:11,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:59:11,407 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) [2022-02-10 03:59:11,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Waiting until timeout for monitored process [2022-02-10 03:59:11,428 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:59:11,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:59:11,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 03:59:11,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:59:11,500 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:59:11,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:59:11,569 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:59:11,570 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237221140] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:59:11,570 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:59:11,570 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 16 [2022-02-10 03:59:11,570 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491328168] [2022-02-10 03:59:11,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:59:11,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-10 03:59:11,570 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:59:11,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-10 03:59:11,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-02-10 03:59:11,571 INFO L87 Difference]: Start difference. First operand 55533 states and 152905 transitions. Second operand has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:59:12,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:59:12,612 INFO L93 Difference]: Finished difference Result 63138 states and 171664 transitions. [2022-02-10 03:59:12,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-10 03:59:12,612 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:59:12,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:59:12,828 INFO L225 Difference]: With dead ends: 63138 [2022-02-10 03:59:12,828 INFO L226 Difference]: Without dead ends: 63133 [2022-02-10 03:59:12,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=376, Invalid=1430, Unknown=0, NotChecked=0, Total=1806 [2022-02-10 03:59:12,828 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 287 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:59:12,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [287 Valid, 131 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 03:59:12,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63133 states. [2022-02-10 03:59:14,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63133 to 55684. [2022-02-10 03:59:14,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55684 states, 55683 states have (on average 2.7516297613275147) internal successors, (153219), 55683 states have internal predecessors, (153219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:59:14,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55684 states to 55684 states and 153219 transitions. [2022-02-10 03:59:14,462 INFO L78 Accepts]: Start accepts. Automaton has 55684 states and 153219 transitions. Word has length 28 [2022-02-10 03:59:14,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:59:14,462 INFO L470 AbstractCegarLoop]: Abstraction has 55684 states and 153219 transitions. [2022-02-10 03:59:14,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:59:14,462 INFO L276 IsEmpty]: Start isEmpty. Operand 55684 states and 153219 transitions. [2022-02-10 03:59:14,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:59:14,721 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:59:14,722 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:59:14,737 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Ended with exit code 0 [2022-02-10 03:59:14,923 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,SelfDestructingSolverStorable126 [2022-02-10 03:59:14,923 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:59:14,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:59:14,924 INFO L85 PathProgramCache]: Analyzing trace with hash 123997060, now seen corresponding path program 87 times [2022-02-10 03:59:14,924 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:59:14,924 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442437654] [2022-02-10 03:59:14,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:59:14,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:59:14,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:59:14,974 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:59:14,975 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:59:14,975 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442437654] [2022-02-10 03:59:14,975 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442437654] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:59:14,975 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264801492] [2022-02-10 03:59:14,975 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:59:14,975 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:59:14,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:59:14,976 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) [2022-02-10 03:59:14,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Waiting until timeout for monitored process [2022-02-10 03:59:14,998 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-10 03:59:14,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:59:14,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 03:59:14,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:59:15,077 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:59:15,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:59:15,161 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:59:15,161 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264801492] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:59:15,162 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:59:15,162 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 17 [2022-02-10 03:59:15,162 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896381653] [2022-02-10 03:59:15,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:59:15,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-10 03:59:15,162 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:59:15,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-10 03:59:15,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2022-02-10 03:59:15,163 INFO L87 Difference]: Start difference. First operand 55684 states and 153219 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:59:16,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:59:16,658 INFO L93 Difference]: Finished difference Result 81981 states and 215643 transitions. [2022-02-10 03:59:16,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-02-10 03:59:16,658 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-10 03:59:16,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:59:16,877 INFO L225 Difference]: With dead ends: 81981 [2022-02-10 03:59:16,878 INFO L226 Difference]: Without dead ends: 81976 [2022-02-10 03:59:16,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2111 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1367, Invalid=4795, Unknown=0, NotChecked=0, Total=6162 [2022-02-10 03:59:16,878 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 517 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 03:59:16,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [517 Valid, 197 Invalid, 885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 03:59:16,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81976 states. [2022-02-10 03:59:18,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81976 to 55857. [2022-02-10 03:59:18,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55857 states, 55856 states have (on average 2.7489437124033227) internal successors, (153545), 55856 states have internal predecessors, (153545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:59:18,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55857 states to 55857 states and 153545 transitions. [2022-02-10 03:59:18,593 INFO L78 Accepts]: Start accepts. Automaton has 55857 states and 153545 transitions. Word has length 28 [2022-02-10 03:59:18,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:59:18,593 INFO L470 AbstractCegarLoop]: Abstraction has 55857 states and 153545 transitions. [2022-02-10 03:59:18,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:59:18,594 INFO L276 IsEmpty]: Start isEmpty. Operand 55857 states and 153545 transitions. [2022-02-10 03:59:18,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:59:18,659 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:59:18,659 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:59:18,675 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Ended with exit code 0 [2022-02-10 03:59:18,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127,127 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:59:18,860 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:59:18,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:59:18,861 INFO L85 PathProgramCache]: Analyzing trace with hash 863508562, now seen corresponding path program 88 times [2022-02-10 03:59:18,861 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:59:18,861 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691789187] [2022-02-10 03:59:18,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:59:18,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:59:18,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:59:18,908 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:59:18,908 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:59:18,908 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691789187] [2022-02-10 03:59:18,908 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691789187] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:59:18,908 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279004465] [2022-02-10 03:59:18,911 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:59:18,912 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:59:18,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:59:18,914 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) [2022-02-10 03:59:18,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Waiting until timeout for monitored process [2022-02-10 03:59:18,935 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:59:18,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:59:18,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 03:59:18,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:59:19,062 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:59:19,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:59:19,168 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:59:19,168 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279004465] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:59:19,168 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:59:19,168 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-02-10 03:59:19,168 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273661806] [2022-02-10 03:59:19,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:59:19,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 03:59:19,168 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:59:19,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 03:59:19,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2022-02-10 03:59:19,169 INFO L87 Difference]: Start difference. First operand 55857 states and 153545 transitions. Second operand has 21 states, 21 states have (on average 2.619047619047619) internal successors, (55), 21 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)