/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/send-receive-alt.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-03 19:34:49,113 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-03 19:34:49,115 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-03 19:34:49,174 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-03 19:34:49,216 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-03-03 19:34:49,238 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-03 19:34:49,238 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-03 19:34:49,239 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-03 19:34:49,239 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-03 19:34:49,239 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-03 19:34:49,239 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-03 19:34:49,240 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-03 19:34:49,240 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-03 19:34:49,240 INFO L138 SettingsManager]: * Use SBE=true [2022-03-03 19:34:49,240 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-03 19:34:49,240 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-03 19:34:49,241 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-03 19:34:49,241 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-03 19:34:49,241 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-03 19:34:49,241 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-03 19:34:49,241 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-03 19:34:49,241 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-03 19:34:49,241 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-03 19:34:49,241 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-03 19:34:49,241 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-03 19:34:49,241 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-03 19:34:49,241 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-03 19:34:49,241 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-03 19:34:49,242 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-03 19:34:49,242 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-03 19:34:49,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-03 19:34:49,242 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-03 19:34:49,242 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-03 19:34:49,242 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-03 19:34:49,242 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-03 19:34:49,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-03 19:34:49,242 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-03 19:34:49,242 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-03 19:34:49,243 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-03 19:34:49,423 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-03 19:34:49,446 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-03 19:34:49,447 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-03 19:34:49,448 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-03 19:34:49,449 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-03 19:34:49,450 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/send-receive-alt.wvr.bpl [2022-03-03 19:34:49,450 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/send-receive-alt.wvr.bpl' [2022-03-03 19:34:49,476 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-03 19:34:49,477 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-03 19:34:49,478 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-03 19:34:49,478 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-03 19:34:49,478 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-03 19:34:49,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "send-receive-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 07:34:49" (1/1) ... [2022-03-03 19:34:49,491 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "send-receive-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 07:34:49" (1/1) ... [2022-03-03 19:34:49,495 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-03 19:34:49,496 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-03 19:34:49,497 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-03 19:34:49,497 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-03 19:34:49,497 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-03 19:34:49,502 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "send-receive-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 07:34:49" (1/1) ... [2022-03-03 19:34:49,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "send-receive-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 07:34:49" (1/1) ... [2022-03-03 19:34:49,503 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "send-receive-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 07:34:49" (1/1) ... [2022-03-03 19:34:49,503 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "send-receive-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 07:34:49" (1/1) ... [2022-03-03 19:34:49,505 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "send-receive-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 07:34:49" (1/1) ... [2022-03-03 19:34:49,507 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "send-receive-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 07:34:49" (1/1) ... [2022-03-03 19:34:49,507 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "send-receive-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 07:34:49" (1/1) ... [2022-03-03 19:34:49,509 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-03 19:34:49,510 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-03 19:34:49,510 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-03 19:34:49,511 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-03 19:34:49,512 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "send-receive-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 07:34:49" (1/1) ... [2022-03-03 19:34:49,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-03 19:34:49,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:34:49,552 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-03 19:34:49,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-03 19:34:49,579 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-03-03 19:34:49,579 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-03 19:34:49,579 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-03 19:34:49,579 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-03-03 19:34:49,579 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-03 19:34:49,579 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-03 19:34:49,580 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-03-03 19:34:49,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-03 19:34:49,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-03 19:34:49,581 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-03 19:34:49,613 INFO L234 CfgBuilder]: Building ICFG [2022-03-03 19:34:49,614 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-03 19:34:49,681 INFO L275 CfgBuilder]: Performing block encoding [2022-03-03 19:34:49,690 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-03 19:34:49,690 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-03-03 19:34:49,691 WARN L329 CfgBuilder]: Unexpected successor node of atomic block begin: thread1EXIT is neither atomic block end nor error location. [2022-03-03 19:34:49,692 INFO L202 PluginConnector]: Adding new model send-receive-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.03 07:34:49 BoogieIcfgContainer [2022-03-03 19:34:49,692 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-03 19:34:49,693 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-03 19:34:49,693 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-03 19:34:49,704 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-03 19:34:49,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "send-receive-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 07:34:49" (1/2) ... [2022-03-03 19:34:49,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ce7256e and model type send-receive-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 07:34:49, skipping insertion in model container [2022-03-03 19:34:49,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "send-receive-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.03 07:34:49" (2/2) ... [2022-03-03 19:34:49,705 INFO L111 eAbstractionObserver]: Analyzing ICFG send-receive-alt.wvr.bpl [2022-03-03 19:34:49,708 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-03 19:34:49,708 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-03 19:34:49,709 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-03 19:34:49,709 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-03 19:34:49,736 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-03-03 19:34:49,763 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-03 19:34:49,768 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-03 19:34:49,768 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-03 19:34:49,774 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 25 places, 21 transitions, 58 flow [2022-03-03 19:34:49,790 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 24 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 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) [2022-03-03 19:34:49,791 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 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) [2022-03-03 19:34:49,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-03-03 19:34:49,804 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:34:49,814 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:34:49,815 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:34:49,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:34:49,818 INFO L85 PathProgramCache]: Analyzing trace with hash -603576974, now seen corresponding path program 1 times [2022-03-03 19:34:49,840 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:34:49,840 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204509676] [2022-03-03 19:34:49,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:34:49,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:34:49,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:34:49,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:34:49,955 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:34:49,955 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204509676] [2022-03-03 19:34:49,956 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204509676] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:34:49,956 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:34:49,956 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-03 19:34:49,957 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483755846] [2022-03-03 19:34:49,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:34:49,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-03 19:34:49,960 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:34:49,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-03 19:34:49,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-03 19:34:49,980 INFO L87 Difference]: Start difference. First operand has 24 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 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) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:34:50,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:34:50,006 INFO L93 Difference]: Finished difference Result 42 states and 82 transitions. [2022-03-03 19:34:50,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-03 19:34:50,008 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-03-03 19:34:50,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:34:50,014 INFO L225 Difference]: With dead ends: 42 [2022-03-03 19:34:50,014 INFO L226 Difference]: Without dead ends: 30 [2022-03-03 19:34:50,015 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-03 19:34:50,022 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 5 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 19:34:50,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 17 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 19:34:50,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-03-03 19:34:50,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-03-03 19:34:50,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.9655172413793103) internal successors, (57), 29 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) [2022-03-03 19:34:50,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 57 transitions. [2022-03-03 19:34:50,048 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 57 transitions. Word has length 11 [2022-03-03 19:34:50,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:34:50,049 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 57 transitions. [2022-03-03 19:34:50,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:34:50,049 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 57 transitions. [2022-03-03 19:34:50,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-03-03 19:34:50,050 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:34:50,050 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:34:50,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-03 19:34:50,050 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:34:50,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:34:50,064 INFO L85 PathProgramCache]: Analyzing trace with hash -978133573, now seen corresponding path program 1 times [2022-03-03 19:34:50,064 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:34:50,064 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732177837] [2022-03-03 19:34:50,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:34:50,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:34:50,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:34:50,111 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:34:50,111 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:34:50,111 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732177837] [2022-03-03 19:34:50,111 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732177837] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:34:50,111 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:34:50,112 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-03 19:34:50,112 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340283097] [2022-03-03 19:34:50,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:34:50,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-03 19:34:50,113 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:34:50,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-03 19:34:50,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-03 19:34:50,114 INFO L87 Difference]: Start difference. First operand 30 states and 57 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:34:50,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:34:50,135 INFO L93 Difference]: Finished difference Result 32 states and 57 transitions. [2022-03-03 19:34:50,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-03 19:34:50,136 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-03-03 19:34:50,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:34:50,136 INFO L225 Difference]: With dead ends: 32 [2022-03-03 19:34:50,136 INFO L226 Difference]: Without dead ends: 31 [2022-03-03 19:34:50,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-03 19:34:50,138 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 3 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 19:34:50,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 17 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 19:34:50,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-03-03 19:34:50,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-03-03 19:34:50,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.8666666666666667) internal successors, (56), 30 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) [2022-03-03 19:34:50,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 56 transitions. [2022-03-03 19:34:50,142 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 56 transitions. Word has length 12 [2022-03-03 19:34:50,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:34:50,143 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 56 transitions. [2022-03-03 19:34:50,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:34:50,143 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 56 transitions. [2022-03-03 19:34:50,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-03 19:34:50,143 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:34:50,143 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:34:50,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-03 19:34:50,144 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:34:50,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:34:50,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1451787426, now seen corresponding path program 1 times [2022-03-03 19:34:50,144 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:34:50,144 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546059640] [2022-03-03 19:34:50,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:34:50,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:34:50,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:34:50,225 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:34:50,225 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:34:50,225 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546059640] [2022-03-03 19:34:50,225 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546059640] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:34:50,225 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223796129] [2022-03-03 19:34:50,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:34:50,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:34:50,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:34:50,227 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:34:50,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:34:50,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-03 19:34:50,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:34:50,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-03 19:34:50,420 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 12 [2022-03-03 19:34:50,460 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:34:50,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:34:50,550 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:34:50,551 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 24 [2022-03-03 19:34:50,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:34:50,640 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223796129] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:34:50,640 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:34:50,640 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2022-03-03 19:34:50,640 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452202118] [2022-03-03 19:34:50,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:34:50,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-03 19:34:50,643 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:34:50,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-03 19:34:50,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-03-03 19:34:50,645 INFO L87 Difference]: Start difference. First operand 31 states and 56 transitions. Second operand has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:34:50,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:34:50,740 INFO L93 Difference]: Finished difference Result 52 states and 101 transitions. [2022-03-03 19:34:50,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:34:50,740 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-03-03 19:34:50,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:34:50,742 INFO L225 Difference]: With dead ends: 52 [2022-03-03 19:34:50,742 INFO L226 Difference]: Without dead ends: 41 [2022-03-03 19:34:50,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-03-03 19:34:50,743 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 28 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:34:50,744 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 72 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:34:50,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-03-03 19:34:50,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2022-03-03 19:34:50,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.9142857142857144) internal successors, (67), 35 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) [2022-03-03 19:34:50,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 67 transitions. [2022-03-03 19:34:50,751 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 67 transitions. Word has length 15 [2022-03-03 19:34:50,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:34:50,757 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 67 transitions. [2022-03-03 19:34:50,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:34:50,758 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 67 transitions. [2022-03-03 19:34:50,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-03 19:34:50,760 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:34:50,760 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:34:50,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-03 19:34:50,975 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 [2022-03-03 19:34:50,976 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:34:50,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:34:50,976 INFO L85 PathProgramCache]: Analyzing trace with hash -552180542, now seen corresponding path program 1 times [2022-03-03 19:34:50,976 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:34:50,977 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690058990] [2022-03-03 19:34:50,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:34:50,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:34:50,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:34:50,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 19:34:50,989 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:34:50,989 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690058990] [2022-03-03 19:34:50,990 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690058990] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:34:50,990 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:34:50,990 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-03 19:34:50,990 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561301797] [2022-03-03 19:34:50,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:34:50,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-03 19:34:50,990 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:34:50,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-03 19:34:50,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-03 19:34:50,991 INFO L87 Difference]: Start difference. First operand 36 states and 67 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:34:51,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:34:51,002 INFO L93 Difference]: Finished difference Result 40 states and 75 transitions. [2022-03-03 19:34:51,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-03 19:34:51,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-03-03 19:34:51,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:34:51,003 INFO L225 Difference]: With dead ends: 40 [2022-03-03 19:34:51,003 INFO L226 Difference]: Without dead ends: 40 [2022-03-03 19:34:51,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-03 19:34:51,004 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 5 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 19:34:51,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 14 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 19:34:51,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-03-03 19:34:51,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 35. [2022-03-03 19:34:51,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.911764705882353) internal successors, (65), 34 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) [2022-03-03 19:34:51,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 65 transitions. [2022-03-03 19:34:51,008 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 65 transitions. Word has length 15 [2022-03-03 19:34:51,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:34:51,008 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 65 transitions. [2022-03-03 19:34:51,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:34:51,009 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 65 transitions. [2022-03-03 19:34:51,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-03 19:34:51,009 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:34:51,009 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:34:51,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-03 19:34:51,009 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:34:51,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:34:51,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1885895719, now seen corresponding path program 2 times [2022-03-03 19:34:51,010 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:34:51,010 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101525161] [2022-03-03 19:34:51,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:34:51,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:34:51,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:34:51,058 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:34:51,058 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:34:51,058 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101525161] [2022-03-03 19:34:51,058 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101525161] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:34:51,058 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:34:51,059 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-03 19:34:51,059 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469081743] [2022-03-03 19:34:51,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:34:51,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 19:34:51,059 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:34:51,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 19:34:51,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-03-03 19:34:51,060 INFO L87 Difference]: Start difference. First operand 35 states and 65 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:34:51,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:34:51,080 INFO L93 Difference]: Finished difference Result 86 states and 160 transitions. [2022-03-03 19:34:51,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-03 19:34:51,080 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-03-03 19:34:51,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:34:51,081 INFO L225 Difference]: With dead ends: 86 [2022-03-03 19:34:51,081 INFO L226 Difference]: Without dead ends: 84 [2022-03-03 19:34:51,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-03-03 19:34:51,082 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 27 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 19:34:51,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 37 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 19:34:51,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-03-03 19:34:51,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 58. [2022-03-03 19:34:51,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 2.0526315789473686) internal successors, (117), 57 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:34:51,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 117 transitions. [2022-03-03 19:34:51,088 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 117 transitions. Word has length 16 [2022-03-03 19:34:51,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:34:51,088 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 117 transitions. [2022-03-03 19:34:51,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:34:51,088 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 117 transitions. [2022-03-03 19:34:51,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:34:51,089 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:34:51,089 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:34:51,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-03 19:34:51,089 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:34:51,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:34:51,090 INFO L85 PathProgramCache]: Analyzing trace with hash -2121429846, now seen corresponding path program 3 times [2022-03-03 19:34:51,090 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:34:51,090 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218197358] [2022-03-03 19:34:51,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:34:51,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:34:51,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:34:51,108 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 19:34:51,108 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:34:51,108 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218197358] [2022-03-03 19:34:51,108 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218197358] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:34:51,108 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716209375] [2022-03-03 19:34:51,108 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:34:51,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:34:51,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:34:51,127 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:34:51,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-03 19:34:51,150 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 19:34:51,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:34:51,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-03 19:34:51,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:34:51,178 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 19:34:51,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:34:51,204 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 19:34:51,204 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716209375] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:34:51,205 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:34:51,205 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2022-03-03 19:34:51,205 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320773753] [2022-03-03 19:34:51,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:34:51,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-03 19:34:51,205 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:34:51,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-03 19:34:51,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-03 19:34:51,206 INFO L87 Difference]: Start difference. First operand 58 states and 117 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:34:51,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:34:51,221 INFO L93 Difference]: Finished difference Result 79 states and 150 transitions. [2022-03-03 19:34:51,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-03 19:34:51,222 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:34:51,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:34:51,222 INFO L225 Difference]: With dead ends: 79 [2022-03-03 19:34:51,222 INFO L226 Difference]: Without dead ends: 79 [2022-03-03 19:34:51,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-03 19:34:51,223 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 15 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 23 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 [2022-03-03 19:34:51,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 23 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 19:34:51,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-03-03 19:34:51,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 69. [2022-03-03 19:34:51,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 2.0441176470588234) internal successors, (139), 68 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:34:51,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 139 transitions. [2022-03-03 19:34:51,228 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 139 transitions. Word has length 19 [2022-03-03 19:34:51,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:34:51,228 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 139 transitions. [2022-03-03 19:34:51,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:34:51,229 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 139 transitions. [2022-03-03 19:34:51,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:34:51,229 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:34:51,229 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:34:51,246 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-03-03 19:34:51,446 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,SelfDestructingSolverStorable5 [2022-03-03 19:34:51,446 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:34:51,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:34:51,447 INFO L85 PathProgramCache]: Analyzing trace with hash 169569482, now seen corresponding path program 1 times [2022-03-03 19:34:51,447 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:34:51,447 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646856478] [2022-03-03 19:34:51,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:34:51,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:34:51,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:34:51,599 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:34:51,599 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:34:51,599 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646856478] [2022-03-03 19:34:51,599 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646856478] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:34:51,599 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967525378] [2022-03-03 19:34:51,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:34:51,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:34:51,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:34:51,616 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:34:51,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-03 19:34:51,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:34:51,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-03 19:34:51,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:34:51,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:34:51,809 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:34:51,810 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 37 treesize of output 19 [2022-03-03 19:34:51,835 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:34:51,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:34:51,958 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-03-03 19:34:51,959 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 40 treesize of output 58 [2022-03-03 19:34:52,070 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:34:52,071 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967525378] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:34:52,071 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:34:52,071 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-03-03 19:34:52,071 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336895210] [2022-03-03 19:34:52,072 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:34:52,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-03 19:34:52,072 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:34:52,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-03 19:34:52,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2022-03-03 19:34:52,073 INFO L87 Difference]: Start difference. First operand 69 states and 139 transitions. Second operand has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:34:52,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:34:52,166 INFO L93 Difference]: Finished difference Result 114 states and 236 transitions. [2022-03-03 19:34:52,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 19:34:52,167 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 14 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 19 [2022-03-03 19:34:52,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:34:52,167 INFO L225 Difference]: With dead ends: 114 [2022-03-03 19:34:52,167 INFO L226 Difference]: Without dead ends: 97 [2022-03-03 19:34:52,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2022-03-03 19:34:52,168 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 51 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 19:34:52,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 83 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 68 Invalid, 0 Unknown, 3 Unchecked, 0.0s Time] [2022-03-03 19:34:52,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-03-03 19:34:52,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 75. [2022-03-03 19:34:52,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 2.0) internal successors, (148), 74 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:34:52,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 148 transitions. [2022-03-03 19:34:52,173 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 148 transitions. Word has length 19 [2022-03-03 19:34:52,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:34:52,174 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 148 transitions. [2022-03-03 19:34:52,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:34:52,174 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 148 transitions. [2022-03-03 19:34:52,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:34:52,174 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:34:52,175 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:34:52,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-03 19:34:52,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:34:52,375 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:34:52,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:34:52,379 INFO L85 PathProgramCache]: Analyzing trace with hash 2094263290, now seen corresponding path program 2 times [2022-03-03 19:34:52,379 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:34:52,380 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000692202] [2022-03-03 19:34:52,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:34:52,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:34:52,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:34:52,467 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:34:52,468 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:34:52,468 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000692202] [2022-03-03 19:34:52,468 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000692202] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:34:52,468 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143712302] [2022-03-03 19:34:52,468 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:34:52,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:34:52,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:34:52,484 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:34:52,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-03 19:34:52,504 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:34:52,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:34:52,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-03 19:34:52,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:34:52,597 INFO L353 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-03-03 19:34:52,597 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 19 [2022-03-03 19:34:52,614 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:34:52,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:34:52,722 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-03-03 19:34:52,723 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 40 treesize of output 58 [2022-03-03 19:34:52,861 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:34:52,861 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143712302] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:34:52,861 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:34:52,861 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-03-03 19:34:52,862 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997705445] [2022-03-03 19:34:52,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:34:52,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-03 19:34:52,863 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:34:52,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-03 19:34:52,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-03-03 19:34:52,863 INFO L87 Difference]: Start difference. First operand 75 states and 148 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:34:52,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:34:52,931 INFO L93 Difference]: Finished difference Result 111 states and 224 transitions. [2022-03-03 19:34:52,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-03 19:34:52,931 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 13 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 19 [2022-03-03 19:34:52,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:34:52,932 INFO L225 Difference]: With dead ends: 111 [2022-03-03 19:34:52,932 INFO L226 Difference]: Without dead ends: 96 [2022-03-03 19:34:52,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-03-03 19:34:52,933 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 34 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:34:52,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 126 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:34:52,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-03-03 19:34:52,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 82. [2022-03-03 19:34:52,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 2.0123456790123457) internal successors, (163), 81 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:34:52,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 163 transitions. [2022-03-03 19:34:52,937 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 163 transitions. Word has length 19 [2022-03-03 19:34:52,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:34:52,937 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 163 transitions. [2022-03-03 19:34:52,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:34:52,937 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 163 transitions. [2022-03-03 19:34:52,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:34:52,938 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:34:52,938 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:34:52,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-03 19:34:53,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:34:53,154 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:34:53,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:34:53,155 INFO L85 PathProgramCache]: Analyzing trace with hash 327811023, now seen corresponding path program 3 times [2022-03-03 19:34:53,155 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:34:53,155 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991957877] [2022-03-03 19:34:53,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:34:53,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:34:53,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:34:53,182 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:34:53,182 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:34:53,182 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991957877] [2022-03-03 19:34:53,182 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991957877] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:34:53,183 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669307208] [2022-03-03 19:34:53,183 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:34:53,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:34:53,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:34:53,184 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:34:53,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-03 19:34:53,205 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-03-03 19:34:53,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:34:53,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-03 19:34:53,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:34:53,237 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:34:53,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:34:53,277 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:34:53,277 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669307208] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:34:53,278 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:34:53,278 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 5 [2022-03-03 19:34:53,278 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230198485] [2022-03-03 19:34:53,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:34:53,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-03 19:34:53,278 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:34:53,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-03 19:34:53,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-03-03 19:34:53,279 INFO L87 Difference]: Start difference. First operand 82 states and 163 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:34:53,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:34:53,300 INFO L93 Difference]: Finished difference Result 181 states and 351 transitions. [2022-03-03 19:34:53,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-03 19:34:53,300 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:34:53,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:34:53,301 INFO L225 Difference]: With dead ends: 181 [2022-03-03 19:34:53,301 INFO L226 Difference]: Without dead ends: 178 [2022-03-03 19:34:53,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-03-03 19:34:53,302 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 49 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 19:34:53,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 40 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 19:34:53,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-03-03 19:34:53,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 106. [2022-03-03 19:34:53,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 2.0952380952380953) internal successors, (220), 105 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:34:53,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 220 transitions. [2022-03-03 19:34:53,307 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 220 transitions. Word has length 20 [2022-03-03 19:34:53,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:34:53,307 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 220 transitions. [2022-03-03 19:34:53,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:34:53,307 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 220 transitions. [2022-03-03 19:34:53,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-03-03 19:34:53,308 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:34:53,308 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:34:53,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-03 19:34:53,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:34:53,524 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:34:53,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:34:53,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1610697433, now seen corresponding path program 4 times [2022-03-03 19:34:53,525 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:34:53,525 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388021986] [2022-03-03 19:34:53,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:34:53,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:34:53,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:34:53,647 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:34:53,647 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:34:53,648 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388021986] [2022-03-03 19:34:53,648 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388021986] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:34:53,648 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185686312] [2022-03-03 19:34:53,648 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:34:53,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:34:53,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:34:53,649 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:34:53,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-03 19:34:53,685 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:34:53,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:34:53,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-03 19:34:53,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:34:53,860 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:34:53,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:34:53,861 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 37 treesize of output 19 [2022-03-03 19:34:53,880 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:34:53,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:34:54,025 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-03-03 19:34:54,025 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 40 treesize of output 58 [2022-03-03 19:34:54,131 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:34:54,131 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185686312] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:34:54,131 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:34:54,131 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-03-03 19:34:54,133 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469262061] [2022-03-03 19:34:54,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:34:54,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-03 19:34:54,134 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:34:54,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-03 19:34:54,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2022-03-03 19:34:54,134 INFO L87 Difference]: Start difference. First operand 106 states and 220 transitions. Second operand has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:34:54,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:34:54,231 INFO L93 Difference]: Finished difference Result 169 states and 355 transitions. [2022-03-03 19:34:54,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-03 19:34:54,232 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have 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 [2022-03-03 19:34:54,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:34:54,233 INFO L225 Difference]: With dead ends: 169 [2022-03-03 19:34:54,233 INFO L226 Difference]: Without dead ends: 154 [2022-03-03 19:34:54,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2022-03-03 19:34:54,234 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 65 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 19:34:54,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 93 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 66 Invalid, 0 Unknown, 3 Unchecked, 0.0s Time] [2022-03-03 19:34:54,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-03-03 19:34:54,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 100. [2022-03-03 19:34:54,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 2.090909090909091) internal successors, (207), 99 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:34:54,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 207 transitions. [2022-03-03 19:34:54,245 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 207 transitions. Word has length 22 [2022-03-03 19:34:54,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:34:54,245 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 207 transitions. [2022-03-03 19:34:54,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:34:54,245 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 207 transitions. [2022-03-03 19:34:54,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-03 19:34:54,246 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:34:54,246 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:34:54,267 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-03-03 19:34:54,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:34:54,468 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:34:54,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:34:54,469 INFO L85 PathProgramCache]: Analyzing trace with hash -476045102, now seen corresponding path program 5 times [2022-03-03 19:34:54,469 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:34:54,469 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157395092] [2022-03-03 19:34:54,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:34:54,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:34:54,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:34:54,629 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:34:54,629 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:34:54,629 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157395092] [2022-03-03 19:34:54,630 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157395092] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:34:54,630 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121452624] [2022-03-03 19:34:54,630 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:34:54,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:34:54,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:34:54,638 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:34:54,664 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-03 19:34:54,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:34:54,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:34:54,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:34:54,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-03 19:34:54,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:34:54,864 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:34:54,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:34:54,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:34:54,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:34:54,866 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:34:54,867 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 24 [2022-03-03 19:34:54,885 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:34:54,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:34:55,098 INFO L353 Elim1Store]: treesize reduction 76, result has 52.8 percent of original size [2022-03-03 19:34:55,099 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 58 treesize of output 112 [2022-03-03 19:34:55,250 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:34:55,251 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121452624] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:34:55,251 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:34:55,251 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-03-03 19:34:55,251 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893774681] [2022-03-03 19:34:55,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:34:55,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 19:34:55,251 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:34:55,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 19:34:55,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2022-03-03 19:34:55,252 INFO L87 Difference]: Start difference. First operand 100 states and 207 transitions. Second operand has 21 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 20 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:34:55,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:34:55,639 INFO L93 Difference]: Finished difference Result 568 states and 1167 transitions. [2022-03-03 19:34:55,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-03 19:34:55,639 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 20 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 23 [2022-03-03 19:34:55,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:34:55,641 INFO L225 Difference]: With dead ends: 568 [2022-03-03 19:34:55,641 INFO L226 Difference]: Without dead ends: 359 [2022-03-03 19:34:55,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=243, Invalid=879, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 19:34:55,642 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 243 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:34:55,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [243 Valid, 282 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 235 Invalid, 0 Unknown, 56 Unchecked, 0.1s Time] [2022-03-03 19:34:55,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-03-03 19:34:55,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 156. [2022-03-03 19:34:55,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 2.232258064516129) internal successors, (346), 155 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:34:55,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 346 transitions. [2022-03-03 19:34:55,651 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 346 transitions. Word has length 23 [2022-03-03 19:34:55,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:34:55,651 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 346 transitions. [2022-03-03 19:34:55,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 20 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:34:55,651 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 346 transitions. [2022-03-03 19:34:55,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-03 19:34:55,652 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:34:55,652 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:34:55,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-03 19:34:55,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:34:55,863 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:34:55,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:34:55,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1438145602, now seen corresponding path program 6 times [2022-03-03 19:34:55,864 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:34:55,864 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621636145] [2022-03-03 19:34:55,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:34:55,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:34:55,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:34:55,973 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:34:55,974 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:34:55,974 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621636145] [2022-03-03 19:34:55,974 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621636145] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:34:55,974 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014183214] [2022-03-03 19:34:55,974 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:34:55,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:34:55,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:34:55,980 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:34:55,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-03 19:34:56,015 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-03 19:34:56,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:34:56,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-03 19:34:56,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:34:56,219 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:34:56,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:34:56,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:34:56,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:34:56,221 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:34:56,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:34:56,223 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 24 [2022-03-03 19:34:56,236 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:34:56,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:34:56,389 INFO L353 Elim1Store]: treesize reduction 76, result has 52.8 percent of original size [2022-03-03 19:34:56,389 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 58 treesize of output 112 [2022-03-03 19:34:56,571 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:34:56,571 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1014183214] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:34:56,571 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:34:56,572 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-03-03 19:34:56,572 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505647984] [2022-03-03 19:34:56,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:34:56,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 19:34:56,572 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:34:56,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 19:34:56,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2022-03-03 19:34:56,573 INFO L87 Difference]: Start difference. First operand 156 states and 346 transitions. Second operand has 21 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 20 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:34:56,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:34:56,745 INFO L93 Difference]: Finished difference Result 304 states and 663 transitions. [2022-03-03 19:34:56,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-03 19:34:56,745 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 20 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 23 [2022-03-03 19:34:56,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:34:56,746 INFO L225 Difference]: With dead ends: 304 [2022-03-03 19:34:56,746 INFO L226 Difference]: Without dead ends: 274 [2022-03-03 19:34:56,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2022-03-03 19:34:56,747 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 100 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:34:56,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 281 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 230 Invalid, 0 Unknown, 8 Unchecked, 0.1s Time] [2022-03-03 19:34:56,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-03-03 19:34:56,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 166. [2022-03-03 19:34:56,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 165 states have (on average 2.16969696969697) internal successors, (358), 165 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:34:56,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 358 transitions. [2022-03-03 19:34:56,753 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 358 transitions. Word has length 23 [2022-03-03 19:34:56,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:34:56,753 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 358 transitions. [2022-03-03 19:34:56,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 20 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:34:56,753 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 358 transitions. [2022-03-03 19:34:56,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-03 19:34:56,756 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:34:56,756 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:34:56,774 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-03 19:34:56,956 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,SelfDestructingSolverStorable11 [2022-03-03 19:34:56,957 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:34:56,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:34:56,957 INFO L85 PathProgramCache]: Analyzing trace with hash 983926786, now seen corresponding path program 7 times [2022-03-03 19:34:56,957 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:34:56,957 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26880876] [2022-03-03 19:34:56,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:34:56,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:34:56,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:34:57,094 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:34:57,095 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:34:57,095 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26880876] [2022-03-03 19:34:57,095 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26880876] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:34:57,095 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886681950] [2022-03-03 19:34:57,095 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:34:57,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:34:57,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:34:57,110 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:34:57,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-03 19:34:57,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:34:57,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-03 19:34:57,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:34:57,334 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:34:57,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:34:57,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:34:57,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:34:57,336 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 24 [2022-03-03 19:34:57,355 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:34:57,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:34:57,568 INFO L353 Elim1Store]: treesize reduction 76, result has 52.8 percent of original size [2022-03-03 19:34:57,568 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 58 treesize of output 112 [2022-03-03 19:34:57,766 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:34:57,766 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886681950] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:34:57,766 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:34:57,766 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-03 19:34:57,766 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316768828] [2022-03-03 19:34:57,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:34:57,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 19:34:57,767 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:34:57,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 19:34:57,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2022-03-03 19:34:57,768 INFO L87 Difference]: Start difference. First operand 166 states and 358 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:34:58,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:34:58,186 INFO L93 Difference]: Finished difference Result 629 states and 1277 transitions. [2022-03-03 19:34:58,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-03 19:34:58,187 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-03-03 19:34:58,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:34:58,188 INFO L225 Difference]: With dead ends: 629 [2022-03-03 19:34:58,188 INFO L226 Difference]: Without dead ends: 415 [2022-03-03 19:34:58,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=209, Invalid=783, Unknown=0, NotChecked=0, Total=992 [2022-03-03 19:34:58,189 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 209 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 51 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:34:58,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [209 Valid, 455 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 422 Invalid, 0 Unknown, 51 Unchecked, 0.2s Time] [2022-03-03 19:34:58,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2022-03-03 19:34:58,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 193. [2022-03-03 19:34:58,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 192 states have (on average 2.1770833333333335) internal successors, (418), 192 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:34:58,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 418 transitions. [2022-03-03 19:34:58,194 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 418 transitions. Word has length 23 [2022-03-03 19:34:58,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:34:58,194 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 418 transitions. [2022-03-03 19:34:58,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:34:58,194 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 418 transitions. [2022-03-03 19:34:58,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-03 19:34:58,195 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:34:58,197 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:34:58,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-03 19:34:58,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-03-03 19:34:58,398 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:34:58,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:34:58,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1396849806, now seen corresponding path program 8 times [2022-03-03 19:34:58,398 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:34:58,398 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61202007] [2022-03-03 19:34:58,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:34:58,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:34:58,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:34:58,551 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:34:58,551 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:34:58,551 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61202007] [2022-03-03 19:34:58,551 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61202007] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:34:58,551 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777544892] [2022-03-03 19:34:58,551 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:34:58,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:34:58,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:34:58,552 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:34:58,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-03 19:34:58,574 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:34:58,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:34:58,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-03 19:34:58,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:34:58,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:34:58,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:34:58,784 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:34:58,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:34:58,785 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 24 [2022-03-03 19:34:58,805 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:34:58,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:34:59,027 INFO L353 Elim1Store]: treesize reduction 76, result has 52.8 percent of original size [2022-03-03 19:34:59,027 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 58 treesize of output 112 [2022-03-03 19:34:59,243 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:34:59,244 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777544892] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:34:59,244 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:34:59,244 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-03 19:34:59,244 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6414437] [2022-03-03 19:34:59,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:34:59,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 19:34:59,244 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:34:59,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 19:34:59,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2022-03-03 19:34:59,245 INFO L87 Difference]: Start difference. First operand 193 states and 418 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:34:59,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:34:59,587 INFO L93 Difference]: Finished difference Result 452 states and 974 transitions. [2022-03-03 19:34:59,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-03 19:34:59,587 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-03-03 19:34:59,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:34:59,589 INFO L225 Difference]: With dead ends: 452 [2022-03-03 19:34:59,589 INFO L226 Difference]: Without dead ends: 387 [2022-03-03 19:34:59,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=231, Invalid=825, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 19:34:59,590 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 143 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 60 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:34:59,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 355 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 267 Invalid, 0 Unknown, 60 Unchecked, 0.1s Time] [2022-03-03 19:34:59,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2022-03-03 19:34:59,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 152. [2022-03-03 19:34:59,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 2.0728476821192054) internal successors, (313), 151 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:34:59,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 313 transitions. [2022-03-03 19:34:59,593 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 313 transitions. Word has length 23 [2022-03-03 19:34:59,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:34:59,593 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 313 transitions. [2022-03-03 19:34:59,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:34:59,594 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 313 transitions. [2022-03-03 19:34:59,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-03 19:34:59,594 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:34:59,594 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:34:59,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-03 19:34:59,803 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,SelfDestructingSolverStorable13 [2022-03-03 19:34:59,803 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:34:59,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:34:59,804 INFO L85 PathProgramCache]: Analyzing trace with hash 2108487170, now seen corresponding path program 9 times [2022-03-03 19:34:59,804 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:34:59,804 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405935211] [2022-03-03 19:34:59,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:34:59,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:34:59,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:34:59,923 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:34:59,924 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:34:59,924 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405935211] [2022-03-03 19:34:59,924 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405935211] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:34:59,924 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370902230] [2022-03-03 19:34:59,924 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:34:59,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:34:59,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:34:59,925 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:34:59,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-03 19:34:59,946 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-03 19:34:59,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:34:59,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-03 19:34:59,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:35:00,127 INFO L353 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-03-03 19:35:00,128 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 54 treesize of output 24 [2022-03-03 19:35:00,147 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:00,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:35:00,359 INFO L353 Elim1Store]: treesize reduction 76, result has 52.8 percent of original size [2022-03-03 19:35:00,360 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 58 treesize of output 112 [2022-03-03 19:35:00,558 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:00,559 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370902230] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:35:00,559 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:35:00,559 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-03-03 19:35:00,559 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803299505] [2022-03-03 19:35:00,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:35:00,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 19:35:00,559 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:35:00,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 19:35:00,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2022-03-03 19:35:00,560 INFO L87 Difference]: Start difference. First operand 152 states and 313 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 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) [2022-03-03 19:35:00,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:35:00,696 INFO L93 Difference]: Finished difference Result 303 states and 621 transitions. [2022-03-03 19:35:00,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 19:35:00,697 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 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 23 [2022-03-03 19:35:00,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:35:00,698 INFO L225 Difference]: With dead ends: 303 [2022-03-03 19:35:00,698 INFO L226 Difference]: Without dead ends: 288 [2022-03-03 19:35:00,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 32 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2022-03-03 19:35:00,699 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 101 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:35:00,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 214 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:35:00,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2022-03-03 19:35:00,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 167. [2022-03-03 19:35:00,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 2.0602409638554215) internal successors, (342), 166 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:35:00,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 342 transitions. [2022-03-03 19:35:00,702 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 342 transitions. Word has length 23 [2022-03-03 19:35:00,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:35:00,702 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 342 transitions. [2022-03-03 19:35:00,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 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) [2022-03-03 19:35:00,702 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 342 transitions. [2022-03-03 19:35:00,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-03-03 19:35:00,703 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:35:00,703 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:35:00,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-03-03 19:35:00,911 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,SelfDestructingSolverStorable14 [2022-03-03 19:35:00,911 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:35:00,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:35:00,911 INFO L85 PathProgramCache]: Analyzing trace with hash 768751303, now seen corresponding path program 10 times [2022-03-03 19:35:00,911 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:35:00,911 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135505180] [2022-03-03 19:35:00,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:35:00,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:35:00,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:35:00,942 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:00,942 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:35:00,942 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135505180] [2022-03-03 19:35:00,942 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135505180] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:35:00,942 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703596136] [2022-03-03 19:35:00,942 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:35:00,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:35:00,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:35:00,943 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:35:00,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-03 19:35:00,966 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:35:00,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:35:00,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 19:35:00,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:35:00,996 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:00,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:35:01,030 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:01,031 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703596136] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:35:01,031 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:35:01,031 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 6 [2022-03-03 19:35:01,031 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516356020] [2022-03-03 19:35:01,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:35:01,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:35:01,031 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:35:01,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:35:01,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:35:01,032 INFO L87 Difference]: Start difference. First operand 167 states and 342 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:35:01,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:35:01,054 INFO L93 Difference]: Finished difference Result 333 states and 673 transitions. [2022-03-03 19:35:01,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-03 19:35:01,054 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-03-03 19:35:01,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:35:01,056 INFO L225 Difference]: With dead ends: 333 [2022-03-03 19:35:01,056 INFO L226 Difference]: Without dead ends: 329 [2022-03-03 19:35:01,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:35:01,057 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 69 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 19:35:01,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 48 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 19:35:01,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2022-03-03 19:35:01,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 207. [2022-03-03 19:35:01,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 2.1116504854368934) internal successors, (435), 206 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:35:01,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 435 transitions. [2022-03-03 19:35:01,060 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 435 transitions. Word has length 24 [2022-03-03 19:35:01,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:35:01,061 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 435 transitions. [2022-03-03 19:35:01,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:35:01,061 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 435 transitions. [2022-03-03 19:35:01,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-03 19:35:01,062 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:35:01,062 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:35:01,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-03-03 19:35:01,277 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,SelfDestructingSolverStorable15 [2022-03-03 19:35:01,277 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:35:01,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:35:01,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1202293654, now seen corresponding path program 11 times [2022-03-03 19:35:01,278 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:35:01,278 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648290852] [2022-03-03 19:35:01,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:35:01,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:35:01,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:35:01,435 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 19:35:01,435 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:35:01,435 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648290852] [2022-03-03 19:35:01,435 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648290852] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:35:01,436 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481205506] [2022-03-03 19:35:01,436 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:35:01,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:35:01,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:35:01,437 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:35:01,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-03 19:35:01,458 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-03 19:35:01,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:35:01,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 33 conjunts are in the unsatisfiable core [2022-03-03 19:35:01,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:35:01,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:01,796 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:01,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:01,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:01,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:01,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:01,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:01,800 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:01,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:01,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:01,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:01,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:01,803 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:01,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:01,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:01,817 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:01,818 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2022-03-03 19:35:01,847 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:01,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:35:02,204 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:02,204 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:02,206 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:02,206 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:02,207 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:02,207 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:02,208 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:02,208 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:02,209 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:02,210 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:02,210 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:02,210 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:02,210 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:02,211 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:02,211 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:02,212 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:02,212 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:02,213 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:02,238 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:35:02,239 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 18 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 76 treesize of output 144 [2022-03-03 19:35:02,462 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:02,462 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481205506] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:35:02,462 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:35:02,462 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 28 [2022-03-03 19:35:02,462 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262676862] [2022-03-03 19:35:02,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:35:02,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-03-03 19:35:02,463 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:35:02,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-03-03 19:35:02,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=642, Unknown=0, NotChecked=0, Total=812 [2022-03-03 19:35:02,463 INFO L87 Difference]: Start difference. First operand 207 states and 435 transitions. Second operand has 29 states, 29 states have (on average 2.4827586206896552) internal successors, (72), 28 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:35:03,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:35:03,292 INFO L93 Difference]: Finished difference Result 828 states and 1696 transitions. [2022-03-03 19:35:03,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-03-03 19:35:03,292 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.4827586206896552) internal successors, (72), 28 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-03-03 19:35:03,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:35:03,294 INFO L225 Difference]: With dead ends: 828 [2022-03-03 19:35:03,294 INFO L226 Difference]: Without dead ends: 608 [2022-03-03 19:35:03,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=396, Invalid=1674, Unknown=0, NotChecked=0, Total=2070 [2022-03-03 19:35:03,295 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 271 mSDsluCounter, 893 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 86 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:35:03,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [271 Valid, 659 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 559 Invalid, 0 Unknown, 86 Unchecked, 0.3s Time] [2022-03-03 19:35:03,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2022-03-03 19:35:03,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 303. [2022-03-03 19:35:03,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 302 states have (on average 2.198675496688742) internal successors, (664), 302 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:35:03,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 664 transitions. [2022-03-03 19:35:03,301 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 664 transitions. Word has length 27 [2022-03-03 19:35:03,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:35:03,301 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 664 transitions. [2022-03-03 19:35:03,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.4827586206896552) internal successors, (72), 28 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:35:03,301 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 664 transitions. [2022-03-03 19:35:03,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-03 19:35:03,302 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:35:03,302 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:35:03,320 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-03-03 19:35:03,507 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,SelfDestructingSolverStorable16 [2022-03-03 19:35:03,508 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:35:03,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:35:03,508 INFO L85 PathProgramCache]: Analyzing trace with hash 722400154, now seen corresponding path program 12 times [2022-03-03 19:35:03,508 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:35:03,508 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513109845] [2022-03-03 19:35:03,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:35:03,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:35:03,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:35:03,627 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:03,627 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:35:03,627 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513109845] [2022-03-03 19:35:03,627 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513109845] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:35:03,627 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400320404] [2022-03-03 19:35:03,627 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:35:03,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:35:03,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:35:03,628 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:35:03,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-03 19:35:03,656 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-03 19:35:03,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:35:03,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 33 conjunts are in the unsatisfiable core [2022-03-03 19:35:03,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:35:03,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:03,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:03,986 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:03,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:03,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:03,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:03,988 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:03,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:03,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:03,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:03,991 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:03,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:03,993 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 29 [2022-03-03 19:35:04,013 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:04,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:35:04,387 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-03-03 19:35:04,387 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 76 treesize of output 186 [2022-03-03 19:35:04,719 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:04,719 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400320404] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:35:04,719 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:35:04,719 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 25 [2022-03-03 19:35:04,720 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076037006] [2022-03-03 19:35:04,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:35:04,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-03 19:35:04,720 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:35:04,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-03 19:35:04,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2022-03-03 19:35:04,720 INFO L87 Difference]: Start difference. First operand 303 states and 664 transitions. Second operand has 26 states, 26 states have (on average 2.5) internal successors, (65), 25 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) [2022-03-03 19:35:05,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:35:05,152 INFO L93 Difference]: Finished difference Result 786 states and 1699 transitions. [2022-03-03 19:35:05,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-03 19:35:05,152 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.5) internal successors, (65), 25 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 27 [2022-03-03 19:35:05,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:35:05,154 INFO L225 Difference]: With dead ends: 786 [2022-03-03 19:35:05,154 INFO L226 Difference]: Without dead ends: 721 [2022-03-03 19:35:05,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=302, Invalid=1258, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 19:35:05,155 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 149 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 104 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:35:05,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 421 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 335 Invalid, 0 Unknown, 104 Unchecked, 0.2s Time] [2022-03-03 19:35:05,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2022-03-03 19:35:05,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 267. [2022-03-03 19:35:05,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 266 states have (on average 2.0977443609022557) internal successors, (558), 266 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:35:05,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 558 transitions. [2022-03-03 19:35:05,166 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 558 transitions. Word has length 27 [2022-03-03 19:35:05,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:35:05,166 INFO L470 AbstractCegarLoop]: Abstraction has 267 states and 558 transitions. [2022-03-03 19:35:05,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.5) internal successors, (65), 25 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) [2022-03-03 19:35:05,166 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 558 transitions. [2022-03-03 19:35:05,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-03 19:35:05,166 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:35:05,166 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:35:05,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-03-03 19:35:05,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:35:05,367 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:35:05,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:35:05,367 INFO L85 PathProgramCache]: Analyzing trace with hash 258366058, now seen corresponding path program 13 times [2022-03-03 19:35:05,367 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:35:05,368 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474979752] [2022-03-03 19:35:05,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:35:05,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:35:05,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:35:05,536 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:05,536 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:35:05,536 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474979752] [2022-03-03 19:35:05,536 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474979752] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:35:05,536 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983136186] [2022-03-03 19:35:05,536 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:35:05,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:35:05,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:35:05,537 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:35:05,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-03-03 19:35:05,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:35:05,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 33 conjunts are in the unsatisfiable core [2022-03-03 19:35:05,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:35:05,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:05,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:05,898 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:05,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:05,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:05,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:05,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:05,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:05,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:05,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:05,902 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:05,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:05,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:05,904 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:05,904 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 29 [2022-03-03 19:35:05,924 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:05,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:35:06,301 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-03-03 19:35:06,301 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 76 treesize of output 186 [2022-03-03 19:35:06,515 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:06,515 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983136186] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:35:06,515 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:35:06,515 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-03-03 19:35:06,515 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021377352] [2022-03-03 19:35:06,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:35:06,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:35:06,515 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:35:06,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:35:06,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=570, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:35:06,516 INFO L87 Difference]: Start difference. First operand 267 states and 558 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) [2022-03-03 19:35:06,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:35:06,790 INFO L93 Difference]: Finished difference Result 561 states and 1187 transitions. [2022-03-03 19:35:06,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-03 19:35:06,790 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 27 [2022-03-03 19:35:06,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:35:06,792 INFO L225 Difference]: With dead ends: 561 [2022-03-03 19:35:06,792 INFO L226 Difference]: Without dead ends: 527 [2022-03-03 19:35:06,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=230, Invalid=1030, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 19:35:06,792 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 147 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:35:06,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 344 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 218 Invalid, 0 Unknown, 37 Unchecked, 0.1s Time] [2022-03-03 19:35:06,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2022-03-03 19:35:06,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 276. [2022-03-03 19:35:06,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 275 states have (on average 2.090909090909091) internal successors, (575), 275 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:35:06,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 575 transitions. [2022-03-03 19:35:06,798 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 575 transitions. Word has length 27 [2022-03-03 19:35:06,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:35:06,798 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 575 transitions. [2022-03-03 19:35:06,798 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) [2022-03-03 19:35:06,798 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 575 transitions. [2022-03-03 19:35:06,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-03 19:35:06,798 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:35:06,798 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:35:06,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-03-03 19:35:06,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:35:06,999 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:35:06,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:35:06,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1292581990, now seen corresponding path program 14 times [2022-03-03 19:35:06,999 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:35:06,999 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385084065] [2022-03-03 19:35:06,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:35:07,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:35:07,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:35:07,168 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:07,168 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:35:07,168 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385084065] [2022-03-03 19:35:07,168 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385084065] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:35:07,168 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004371316] [2022-03-03 19:35:07,168 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:35:07,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:35:07,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:35:07,170 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:35:07,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-03-03 19:35:07,191 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:35:07,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:35:07,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 33 conjunts are in the unsatisfiable core [2022-03-03 19:35:07,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:35:07,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:07,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:07,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:07,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:07,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:07,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:07,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:07,489 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:07,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:07,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:07,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:07,491 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:07,492 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 29 [2022-03-03 19:35:07,511 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:07,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:35:07,887 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-03-03 19:35:07,887 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 76 treesize of output 186 [2022-03-03 19:35:08,193 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:08,194 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004371316] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:35:08,194 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:35:08,194 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 24 [2022-03-03 19:35:08,194 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782742885] [2022-03-03 19:35:08,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:35:08,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-03 19:35:08,194 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:35:08,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-03 19:35:08,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=475, Unknown=0, NotChecked=0, Total=600 [2022-03-03 19:35:08,195 INFO L87 Difference]: Start difference. First operand 276 states and 575 transitions. Second operand has 25 states, 25 states have (on average 2.48) internal successors, (62), 24 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) [2022-03-03 19:35:08,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:35:08,890 INFO L93 Difference]: Finished difference Result 1378 states and 2828 transitions. [2022-03-03 19:35:08,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-03 19:35:08,891 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.48) internal successors, (62), 24 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 27 [2022-03-03 19:35:08,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:35:08,894 INFO L225 Difference]: With dead ends: 1378 [2022-03-03 19:35:08,894 INFO L226 Difference]: Without dead ends: 1124 [2022-03-03 19:35:08,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=348, Invalid=1722, Unknown=0, NotChecked=0, Total=2070 [2022-03-03 19:35:08,895 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 292 mSDsluCounter, 945 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 89 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:35:08,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [292 Valid, 702 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 641 Invalid, 0 Unknown, 89 Unchecked, 0.3s Time] [2022-03-03 19:35:08,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2022-03-03 19:35:08,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 483. [2022-03-03 19:35:08,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 2.2053941908713695) internal successors, (1063), 482 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:35:08,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 1063 transitions. [2022-03-03 19:35:08,904 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 1063 transitions. Word has length 27 [2022-03-03 19:35:08,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:35:08,904 INFO L470 AbstractCegarLoop]: Abstraction has 483 states and 1063 transitions. [2022-03-03 19:35:08,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.48) internal successors, (62), 24 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) [2022-03-03 19:35:08,905 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 1063 transitions. [2022-03-03 19:35:08,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-03 19:35:08,905 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:35:08,905 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:35:08,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-03-03 19:35:09,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:35:09,106 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:35:09,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:35:09,106 INFO L85 PathProgramCache]: Analyzing trace with hash 168077722, now seen corresponding path program 15 times [2022-03-03 19:35:09,107 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:35:09,107 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788522999] [2022-03-03 19:35:09,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:35:09,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:35:09,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:35:09,269 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:09,269 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:35:09,269 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788522999] [2022-03-03 19:35:09,269 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788522999] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:35:09,269 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888368028] [2022-03-03 19:35:09,269 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:35:09,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:35:09,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:35:09,270 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:35:09,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-03-03 19:35:09,298 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-03-03 19:35:09,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:35:09,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 33 conjunts are in the unsatisfiable core [2022-03-03 19:35:09,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:35:09,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:09,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:09,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:09,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:09,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:09,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:09,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:09,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:09,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:09,623 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:09,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:09,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:09,624 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:09,625 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 29 [2022-03-03 19:35:09,650 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:09,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:35:09,983 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-03-03 19:35:09,983 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 76 treesize of output 186 [2022-03-03 19:35:10,291 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:10,291 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888368028] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:35:10,291 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:35:10,292 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-03-03 19:35:10,292 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922558319] [2022-03-03 19:35:10,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:35:10,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-03 19:35:10,292 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:35:10,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-03 19:35:10,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2022-03-03 19:35:10,293 INFO L87 Difference]: Start difference. First operand 483 states and 1063 transitions. Second operand has 26 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 25 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) [2022-03-03 19:35:10,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:35:10,590 INFO L93 Difference]: Finished difference Result 1102 states and 2399 transitions. [2022-03-03 19:35:10,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-03 19:35:10,590 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 25 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 27 [2022-03-03 19:35:10,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:35:10,593 INFO L225 Difference]: With dead ends: 1102 [2022-03-03 19:35:10,593 INFO L226 Difference]: Without dead ends: 984 [2022-03-03 19:35:10,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=224, Invalid=966, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 19:35:10,594 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 167 mSDsluCounter, 724 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 138 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:35:10,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 547 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 428 Invalid, 0 Unknown, 138 Unchecked, 0.2s Time] [2022-03-03 19:35:10,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2022-03-03 19:35:10,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 557. [2022-03-03 19:35:10,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 556 states have (on average 2.221223021582734) internal successors, (1235), 556 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:35:10,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 1235 transitions. [2022-03-03 19:35:10,607 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 1235 transitions. Word has length 27 [2022-03-03 19:35:10,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:35:10,607 INFO L470 AbstractCegarLoop]: Abstraction has 557 states and 1235 transitions. [2022-03-03 19:35:10,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 25 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) [2022-03-03 19:35:10,608 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 1235 transitions. [2022-03-03 19:35:10,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-03 19:35:10,623 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:35:10,623 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:35:10,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-03-03 19:35:10,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:35:10,854 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:35:10,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:35:10,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1021849130, now seen corresponding path program 16 times [2022-03-03 19:35:10,854 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:35:10,854 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898491951] [2022-03-03 19:35:10,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:35:10,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:35:10,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:35:11,003 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:11,003 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:35:11,003 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898491951] [2022-03-03 19:35:11,003 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898491951] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:35:11,003 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334217834] [2022-03-03 19:35:11,003 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:35:11,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:35:11,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:35:11,020 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:35:11,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-03-03 19:35:11,119 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:35:11,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:35:11,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 33 conjunts are in the unsatisfiable core [2022-03-03 19:35:11,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:35:11,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:11,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:11,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:11,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:11,395 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:11,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:11,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:11,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:11,397 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 29 [2022-03-03 19:35:11,413 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:11,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:35:11,729 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-03-03 19:35:11,729 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 76 treesize of output 186 [2022-03-03 19:35:12,092 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:12,092 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334217834] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:35:12,092 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:35:12,092 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 23 [2022-03-03 19:35:12,092 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612460775] [2022-03-03 19:35:12,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:35:12,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-03 19:35:12,093 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:35:12,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-03 19:35:12,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=436, Unknown=0, NotChecked=0, Total=552 [2022-03-03 19:35:12,093 INFO L87 Difference]: Start difference. First operand 557 states and 1235 transitions. Second operand has 24 states, 24 states have (on average 2.4583333333333335) internal successors, (59), 23 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) [2022-03-03 19:35:12,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:35:12,679 INFO L93 Difference]: Finished difference Result 1295 states and 2746 transitions. [2022-03-03 19:35:12,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-03 19:35:12,679 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.4583333333333335) internal successors, (59), 23 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 27 [2022-03-03 19:35:12,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:35:12,682 INFO L225 Difference]: With dead ends: 1295 [2022-03-03 19:35:12,682 INFO L226 Difference]: Without dead ends: 1081 [2022-03-03 19:35:12,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 37 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=242, Invalid=1018, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 19:35:12,683 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 245 mSDsluCounter, 969 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:35:12,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 725 Invalid, 778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 684 Invalid, 0 Unknown, 48 Unchecked, 0.3s Time] [2022-03-03 19:35:12,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1081 states. [2022-03-03 19:35:12,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1081 to 599. [2022-03-03 19:35:12,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 598 states have (on average 2.222408026755853) internal successors, (1329), 598 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:35:12,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 1329 transitions. [2022-03-03 19:35:12,693 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 1329 transitions. Word has length 27 [2022-03-03 19:35:12,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:35:12,693 INFO L470 AbstractCegarLoop]: Abstraction has 599 states and 1329 transitions. [2022-03-03 19:35:12,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.4583333333333335) internal successors, (59), 23 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) [2022-03-03 19:35:12,693 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 1329 transitions. [2022-03-03 19:35:12,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-03 19:35:12,693 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:35:12,693 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:35:12,710 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-03-03 19:35:12,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:35:12,909 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:35:12,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:35:12,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1812458454, now seen corresponding path program 17 times [2022-03-03 19:35:12,909 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:35:12,909 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380065312] [2022-03-03 19:35:12,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:35:12,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:35:12,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:35:13,065 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:13,066 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:35:13,066 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380065312] [2022-03-03 19:35:13,066 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380065312] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:35:13,066 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791490711] [2022-03-03 19:35:13,066 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:35:13,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:35:13,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:35:13,067 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:35:13,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-03-03 19:35:13,088 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-03 19:35:13,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:35:13,089 WARN L261 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 34 conjunts are in the unsatisfiable core [2022-03-03 19:35:13,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:35:13,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:13,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:13,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:13,317 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:13,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:13,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:13,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:13,318 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:13,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:13,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:13,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:13,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:13,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:13,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:13,324 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:13,325 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:13,326 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 20 [2022-03-03 19:35:13,343 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:13,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:35:13,639 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:13,639 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:13,641 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:13,641 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:13,642 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:13,647 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:13,648 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:13,648 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:13,649 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:13,649 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:13,649 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:13,650 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:13,650 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:13,650 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:13,651 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:13,653 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:13,653 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:13,654 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:13,679 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:35:13,680 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 18 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 76 treesize of output 144 [2022-03-03 19:35:13,796 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:13,796 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791490711] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:35:13,796 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:35:13,796 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2022-03-03 19:35:13,796 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508712304] [2022-03-03 19:35:13,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:35:13,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-03-03 19:35:13,798 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:35:13,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-03-03 19:35:13,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=675, Unknown=0, NotChecked=0, Total=870 [2022-03-03 19:35:13,799 INFO L87 Difference]: Start difference. First operand 599 states and 1329 transitions. Second operand has 30 states, 30 states have (on average 2.4) internal successors, (72), 29 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:35:15,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:35:15,260 INFO L93 Difference]: Finished difference Result 1349 states and 2863 transitions. [2022-03-03 19:35:15,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-03 19:35:15,261 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.4) internal successors, (72), 29 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-03-03 19:35:15,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:35:15,264 INFO L225 Difference]: With dead ends: 1349 [2022-03-03 19:35:15,264 INFO L226 Difference]: Without dead ends: 1184 [2022-03-03 19:35:15,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1002 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=758, Invalid=3148, Unknown=0, NotChecked=0, Total=3906 [2022-03-03 19:35:15,265 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 274 mSDsluCounter, 904 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 783 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 199 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:35:15,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 783 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 547 Invalid, 0 Unknown, 199 Unchecked, 0.3s Time] [2022-03-03 19:35:15,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2022-03-03 19:35:15,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 724. [2022-03-03 19:35:15,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 723 states have (on average 2.2378976486860305) internal successors, (1618), 723 states have internal predecessors, (1618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:35:15,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 1618 transitions. [2022-03-03 19:35:15,287 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 1618 transitions. Word has length 27 [2022-03-03 19:35:15,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:35:15,287 INFO L470 AbstractCegarLoop]: Abstraction has 724 states and 1618 transitions. [2022-03-03 19:35:15,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.4) internal successors, (72), 29 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:35:15,288 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 1618 transitions. [2022-03-03 19:35:15,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-03 19:35:15,288 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:35:15,288 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:35:15,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-03-03 19:35:15,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:35:15,503 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:35:15,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:35:15,504 INFO L85 PathProgramCache]: Analyzing trace with hash 982353754, now seen corresponding path program 18 times [2022-03-03 19:35:15,504 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:35:15,504 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434118906] [2022-03-03 19:35:15,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:35:15,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:35:15,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:35:15,649 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:15,649 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:35:15,649 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434118906] [2022-03-03 19:35:15,649 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434118906] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:35:15,650 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136149585] [2022-03-03 19:35:15,650 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:35:15,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:35:15,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:35:15,658 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:35:15,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-03-03 19:35:15,679 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-03 19:35:15,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:35:15,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 33 conjunts are in the unsatisfiable core [2022-03-03 19:35:15,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:35:15,858 INFO L353 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2022-03-03 19:35:15,859 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 71 treesize of output 29 [2022-03-03 19:35:15,871 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:15,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:35:16,147 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-03-03 19:35:16,148 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 76 treesize of output 186 [2022-03-03 19:35:16,484 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:16,484 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136149585] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:35:16,484 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:35:16,484 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2022-03-03 19:35:16,484 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580500762] [2022-03-03 19:35:16,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:35:16,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-03 19:35:16,488 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:35:16,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-03 19:35:16,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2022-03-03 19:35:16,488 INFO L87 Difference]: Start difference. First operand 724 states and 1618 transitions. Second operand has 24 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 23 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) [2022-03-03 19:35:16,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:35:16,898 INFO L93 Difference]: Finished difference Result 1075 states and 2357 transitions. [2022-03-03 19:35:16,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-03 19:35:16,900 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 23 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 27 [2022-03-03 19:35:16,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:35:16,903 INFO L225 Difference]: With dead ends: 1075 [2022-03-03 19:35:16,903 INFO L226 Difference]: Without dead ends: 1045 [2022-03-03 19:35:16,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 36 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=182, Invalid=748, Unknown=0, NotChecked=0, Total=930 [2022-03-03 19:35:16,903 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 171 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:35:16,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 478 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 19:35:16,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2022-03-03 19:35:16,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 729. [2022-03-03 19:35:16,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 728 states have (on average 2.23489010989011) internal successors, (1627), 728 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:35:16,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 1627 transitions. [2022-03-03 19:35:16,931 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 1627 transitions. Word has length 27 [2022-03-03 19:35:16,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:35:16,931 INFO L470 AbstractCegarLoop]: Abstraction has 729 states and 1627 transitions. [2022-03-03 19:35:16,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 23 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) [2022-03-03 19:35:16,931 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 1627 transitions. [2022-03-03 19:35:16,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-03 19:35:16,932 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:35:16,932 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:35:16,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-03-03 19:35:17,148 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,SelfDestructingSolverStorable23 [2022-03-03 19:35:17,148 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:35:17,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:35:17,149 INFO L85 PathProgramCache]: Analyzing trace with hash 218353775, now seen corresponding path program 19 times [2022-03-03 19:35:17,149 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:35:17,149 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242481625] [2022-03-03 19:35:17,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:35:17,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:35:17,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:35:17,188 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:17,189 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:35:17,189 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242481625] [2022-03-03 19:35:17,189 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242481625] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:35:17,189 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210402593] [2022-03-03 19:35:17,189 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:35:17,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:35:17,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:35:17,190 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:35:17,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-03-03 19:35:17,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:35:17,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:35:17,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:35:17,257 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:17,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:35:17,308 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:17,308 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210402593] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:35:17,308 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:35:17,308 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 7 [2022-03-03 19:35:17,308 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994770948] [2022-03-03 19:35:17,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:35:17,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:35:17,308 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:35:17,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:35:17,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:35:17,309 INFO L87 Difference]: Start difference. First operand 729 states and 1627 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:35:17,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:35:17,343 INFO L93 Difference]: Finished difference Result 1113 states and 2488 transitions. [2022-03-03 19:35:17,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:35:17,343 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 7 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 28 [2022-03-03 19:35:17,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:35:17,346 INFO L225 Difference]: With dead ends: 1113 [2022-03-03 19:35:17,346 INFO L226 Difference]: Without dead ends: 1108 [2022-03-03 19:35:17,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:35:17,346 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 61 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 19:35:17,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 69 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 19:35:17,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2022-03-03 19:35:17,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 920. [2022-03-03 19:35:17,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 920 states, 919 states have (on average 2.2807399347116433) internal successors, (2096), 919 states have internal predecessors, (2096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:35:17,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 920 states to 920 states and 2096 transitions. [2022-03-03 19:35:17,360 INFO L78 Accepts]: Start accepts. Automaton has 920 states and 2096 transitions. Word has length 28 [2022-03-03 19:35:17,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:35:17,360 INFO L470 AbstractCegarLoop]: Abstraction has 920 states and 2096 transitions. [2022-03-03 19:35:17,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:35:17,360 INFO L276 IsEmpty]: Start isEmpty. Operand 920 states and 2096 transitions. [2022-03-03 19:35:17,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-03-03 19:35:17,361 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:35:17,361 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:35:17,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-03-03 19:35:17,583 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,SelfDestructingSolverStorable24 [2022-03-03 19:35:17,583 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:35:17,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:35:17,584 INFO L85 PathProgramCache]: Analyzing trace with hash -847195769, now seen corresponding path program 20 times [2022-03-03 19:35:17,584 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:35:17,584 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819163358] [2022-03-03 19:35:17,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:35:17,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:35:17,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:35:17,786 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:17,786 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:35:17,786 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819163358] [2022-03-03 19:35:17,786 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819163358] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:35:17,786 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923010777] [2022-03-03 19:35:17,786 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:35:17,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:35:17,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:35:17,787 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:35:17,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-03-03 19:35:17,807 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:35:17,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:35:17,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 33 conjunts are in the unsatisfiable core [2022-03-03 19:35:17,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:35:18,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:18,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:18,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:18,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:18,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:18,138 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:18,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:18,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:18,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:18,140 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:18,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:18,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:18,141 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:18,142 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 29 [2022-03-03 19:35:18,153 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:18,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:35:18,436 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-03-03 19:35:18,436 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 76 treesize of output 186 [2022-03-03 19:35:18,701 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 10 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:18,701 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923010777] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:35:18,701 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:35:18,701 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-03-03 19:35:18,702 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034463597] [2022-03-03 19:35:18,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:35:18,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:35:18,702 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:35:18,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:35:18,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=570, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:35:18,703 INFO L87 Difference]: Start difference. First operand 920 states and 2096 transitions. Second operand has 27 states, 27 states have (on average 2.740740740740741) internal successors, (74), 26 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:35:18,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:35:18,968 INFO L93 Difference]: Finished difference Result 1395 states and 3100 transitions. [2022-03-03 19:35:18,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-03 19:35:18,981 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.740740740740741) internal successors, (74), 26 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-03-03 19:35:18,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:35:18,984 INFO L225 Difference]: With dead ends: 1395 [2022-03-03 19:35:18,985 INFO L226 Difference]: Without dead ends: 1365 [2022-03-03 19:35:18,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=217, Invalid=973, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 19:35:18,986 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 143 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 68 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:35:18,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 391 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 262 Invalid, 0 Unknown, 68 Unchecked, 0.1s Time] [2022-03-03 19:35:18,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1365 states. [2022-03-03 19:35:19,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1365 to 890. [2022-03-03 19:35:19,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 890 states, 889 states have (on average 2.280089988751406) internal successors, (2027), 889 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:35:19,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 2027 transitions. [2022-03-03 19:35:19,013 INFO L78 Accepts]: Start accepts. Automaton has 890 states and 2027 transitions. Word has length 30 [2022-03-03 19:35:19,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:35:19,013 INFO L470 AbstractCegarLoop]: Abstraction has 890 states and 2027 transitions. [2022-03-03 19:35:19,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.740740740740741) internal successors, (74), 26 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:35:19,013 INFO L276 IsEmpty]: Start isEmpty. Operand 890 states and 2027 transitions. [2022-03-03 19:35:19,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-03-03 19:35:19,014 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:35:19,014 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:35:19,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-03-03 19:35:19,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-03-03 19:35:19,230 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:35:19,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:35:19,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1977486249, now seen corresponding path program 21 times [2022-03-03 19:35:19,230 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:35:19,231 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496377307] [2022-03-03 19:35:19,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:35:19,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:35:19,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:35:19,381 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:19,381 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:35:19,381 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496377307] [2022-03-03 19:35:19,381 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496377307] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:35:19,381 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587867914] [2022-03-03 19:35:19,381 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:35:19,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:35:19,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:35:19,382 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:35:19,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-03-03 19:35:19,403 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-03-03 19:35:19,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:35:19,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 35 conjunts are in the unsatisfiable core [2022-03-03 19:35:19,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:35:19,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:19,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:19,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:19,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:19,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:19,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:19,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:19,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:19,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:19,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:19,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:19,750 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:19,751 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:19,752 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 29 [2022-03-03 19:35:19,773 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:19,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:35:20,100 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-03-03 19:35:20,101 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 78 treesize of output 188 [2022-03-03 19:35:20,415 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 5 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:20,415 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587867914] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:35:20,415 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:35:20,415 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-03-03 19:35:20,416 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863329322] [2022-03-03 19:35:20,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:35:20,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-03 19:35:20,416 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:35:20,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-03 19:35:20,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2022-03-03 19:35:20,416 INFO L87 Difference]: Start difference. First operand 890 states and 2027 transitions. Second operand has 26 states, 26 states have (on average 2.730769230769231) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:35:20,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:35:20,805 INFO L93 Difference]: Finished difference Result 1330 states and 2969 transitions. [2022-03-03 19:35:20,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-03 19:35:20,805 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.730769230769231) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-03-03 19:35:20,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:35:20,809 INFO L225 Difference]: With dead ends: 1330 [2022-03-03 19:35:20,809 INFO L226 Difference]: Without dead ends: 1308 [2022-03-03 19:35:20,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 45 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=198, Invalid=924, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 19:35:20,809 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 131 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 142 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:35:20,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 465 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 258 Invalid, 0 Unknown, 142 Unchecked, 0.1s Time] [2022-03-03 19:35:20,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1308 states. [2022-03-03 19:35:20,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1308 to 965. [2022-03-03 19:35:20,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 965 states, 964 states have (on average 2.3215767634854774) internal successors, (2238), 964 states have internal predecessors, (2238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:35:20,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 2238 transitions. [2022-03-03 19:35:20,823 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 2238 transitions. Word has length 30 [2022-03-03 19:35:20,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:35:20,823 INFO L470 AbstractCegarLoop]: Abstraction has 965 states and 2238 transitions. [2022-03-03 19:35:20,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.730769230769231) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:35:20,823 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 2238 transitions. [2022-03-03 19:35:20,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-03-03 19:35:20,824 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:35:20,825 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:35:20,840 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-03-03 19:35:21,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:35:21,033 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:35:21,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:35:21,033 INFO L85 PathProgramCache]: Analyzing trace with hash 919637303, now seen corresponding path program 22 times [2022-03-03 19:35:21,033 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:35:21,033 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057909378] [2022-03-03 19:35:21,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:35:21,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:35:21,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:35:21,215 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:21,215 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:35:21,215 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057909378] [2022-03-03 19:35:21,215 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057909378] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:35:21,215 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980677754] [2022-03-03 19:35:21,215 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:35:21,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:35:21,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:35:21,216 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:35:21,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-03-03 19:35:21,241 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:35:21,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:35:21,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 33 conjunts are in the unsatisfiable core [2022-03-03 19:35:21,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:35:21,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:21,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:21,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:21,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:21,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:21,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:21,586 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:21,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:21,587 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 29 [2022-03-03 19:35:21,606 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:21,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:35:21,984 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-03-03 19:35:21,985 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 76 treesize of output 186 [2022-03-03 19:35:22,325 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:22,326 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980677754] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:35:22,326 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:35:22,326 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-03-03 19:35:22,326 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686001544] [2022-03-03 19:35:22,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:35:22,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-03 19:35:22,326 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:35:22,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-03 19:35:22,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=482, Unknown=0, NotChecked=0, Total=600 [2022-03-03 19:35:22,327 INFO L87 Difference]: Start difference. First operand 965 states and 2238 transitions. Second operand has 25 states, 25 states have (on average 2.72) internal successors, (68), 24 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:35:22,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:35:22,779 INFO L93 Difference]: Finished difference Result 1623 states and 3666 transitions. [2022-03-03 19:35:22,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-03 19:35:22,779 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.72) internal successors, (68), 24 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-03-03 19:35:22,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:35:22,783 INFO L225 Difference]: With dead ends: 1623 [2022-03-03 19:35:22,784 INFO L226 Difference]: Without dead ends: 1549 [2022-03-03 19:35:22,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=306, Invalid=1176, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 19:35:22,784 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 149 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 90 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:35:22,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 507 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 348 Invalid, 0 Unknown, 90 Unchecked, 0.2s Time] [2022-03-03 19:35:22,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1549 states. [2022-03-03 19:35:22,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1549 to 938. [2022-03-03 19:35:22,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 938 states, 937 states have (on average 2.312700106723586) internal successors, (2167), 937 states have internal predecessors, (2167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:35:22,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 938 states to 938 states and 2167 transitions. [2022-03-03 19:35:22,798 INFO L78 Accepts]: Start accepts. Automaton has 938 states and 2167 transitions. Word has length 30 [2022-03-03 19:35:22,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:35:22,798 INFO L470 AbstractCegarLoop]: Abstraction has 938 states and 2167 transitions. [2022-03-03 19:35:22,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.72) internal successors, (68), 24 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:35:22,798 INFO L276 IsEmpty]: Start isEmpty. Operand 938 states and 2167 transitions. [2022-03-03 19:35:22,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-03-03 19:35:22,799 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:35:22,799 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:35:22,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-03-03 19:35:23,014 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,SelfDestructingSolverStorable27 [2022-03-03 19:35:23,015 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:35:23,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:35:23,015 INFO L85 PathProgramCache]: Analyzing trace with hash 130006983, now seen corresponding path program 23 times [2022-03-03 19:35:23,015 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:35:23,015 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250508740] [2022-03-03 19:35:23,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:35:23,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:35:23,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:35:23,168 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:23,168 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:35:23,168 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250508740] [2022-03-03 19:35:23,169 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250508740] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:35:23,169 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982327734] [2022-03-03 19:35:23,169 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:35:23,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:35:23,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:35:23,170 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:35:23,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-03-03 19:35:23,191 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-03-03 19:35:23,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:35:23,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 33 conjunts are in the unsatisfiable core [2022-03-03 19:35:23,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:35:23,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:23,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:23,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:23,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:23,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:23,435 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:23,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:23,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:23,437 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 29 [2022-03-03 19:35:23,450 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:23,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:35:23,725 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-03-03 19:35:23,726 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 76 treesize of output 186 [2022-03-03 19:35:24,125 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 2 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:24,125 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982327734] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:35:24,125 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:35:24,125 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-03-03 19:35:24,125 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004941035] [2022-03-03 19:35:24,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:35:24,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-03 19:35:24,126 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:35:24,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-03 19:35:24,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=482, Unknown=0, NotChecked=0, Total=600 [2022-03-03 19:35:24,127 INFO L87 Difference]: Start difference. First operand 938 states and 2167 transitions. Second operand has 25 states, 25 states have (on average 2.72) internal successors, (68), 24 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:35:24,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:35:24,635 INFO L93 Difference]: Finished difference Result 1547 states and 3470 transitions. [2022-03-03 19:35:24,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-03 19:35:24,635 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.72) internal successors, (68), 24 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-03-03 19:35:24,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:35:24,639 INFO L225 Difference]: With dead ends: 1547 [2022-03-03 19:35:24,639 INFO L226 Difference]: Without dead ends: 1487 [2022-03-03 19:35:24,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=353, Invalid=1453, Unknown=0, NotChecked=0, Total=1806 [2022-03-03 19:35:24,640 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 192 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 126 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:35:24,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [192 Valid, 430 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 240 Invalid, 0 Unknown, 126 Unchecked, 0.1s Time] [2022-03-03 19:35:24,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1487 states. [2022-03-03 19:35:24,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1487 to 892. [2022-03-03 19:35:24,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 892 states, 891 states have (on average 2.313131313131313) internal successors, (2061), 891 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:35:24,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 2061 transitions. [2022-03-03 19:35:24,655 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 2061 transitions. Word has length 30 [2022-03-03 19:35:24,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:35:24,655 INFO L470 AbstractCegarLoop]: Abstraction has 892 states and 2061 transitions. [2022-03-03 19:35:24,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.72) internal successors, (68), 24 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:35:24,655 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 2061 transitions. [2022-03-03 19:35:24,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-03 19:35:24,656 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:35:24,656 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:35:24,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-03-03 19:35:24,871 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,SelfDestructingSolverStorable28 [2022-03-03 19:35:24,872 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:35:24,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:35:24,872 INFO L85 PathProgramCache]: Analyzing trace with hash -2076351950, now seen corresponding path program 24 times [2022-03-03 19:35:24,872 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:35:24,872 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820694589] [2022-03-03 19:35:24,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:35:24,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:35:24,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:35:25,042 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:25,043 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:35:25,043 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820694589] [2022-03-03 19:35:25,043 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820694589] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:35:25,043 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287805975] [2022-03-03 19:35:25,043 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:35:25,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:35:25,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:35:25,044 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:35:25,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-03-03 19:35:25,066 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-03 19:35:25,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:35:25,066 WARN L261 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 41 conjunts are in the unsatisfiable core [2022-03-03 19:35:25,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:35:25,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:25,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:25,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:25,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:25,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:25,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:25,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:25,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:25,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:25,371 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:25,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:25,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:25,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:25,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:25,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:25,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:25,374 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:25,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:25,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:25,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:25,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:25,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:25,376 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:25,376 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:25,377 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 10 disjoint index pairs (out of 36 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 34 [2022-03-03 19:35:25,389 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 2 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:25,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:35:25,798 INFO L353 Elim1Store]: treesize reduction 264, result has 47.7 percent of original size [2022-03-03 19:35:25,798 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 94 treesize of output 280 [2022-03-03 19:35:26,327 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:26,327 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287805975] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:35:26,327 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:35:26,327 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 31 [2022-03-03 19:35:26,327 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312949012] [2022-03-03 19:35:26,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:35:26,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-03 19:35:26,328 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:35:26,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-03 19:35:26,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=828, Unknown=0, NotChecked=0, Total=992 [2022-03-03 19:35:26,328 INFO L87 Difference]: Start difference. First operand 892 states and 2061 transitions. Second operand has 32 states, 32 states have (on average 2.40625) internal successors, (77), 31 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:35:27,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:35:27,400 INFO L93 Difference]: Finished difference Result 2169 states and 4810 transitions. [2022-03-03 19:35:27,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-03 19:35:27,400 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.40625) internal successors, (77), 31 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-03-03 19:35:27,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:35:27,413 INFO L225 Difference]: With dead ends: 2169 [2022-03-03 19:35:27,413 INFO L226 Difference]: Without dead ends: 2112 [2022-03-03 19:35:27,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1400 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=691, Invalid=3731, Unknown=0, NotChecked=0, Total=4422 [2022-03-03 19:35:27,414 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 252 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 129 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:35:27,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 696 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 525 Invalid, 0 Unknown, 129 Unchecked, 0.3s Time] [2022-03-03 19:35:27,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2112 states. [2022-03-03 19:35:27,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2112 to 1058. [2022-03-03 19:35:27,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1058 states, 1057 states have (on average 2.3103122043519395) internal successors, (2442), 1057 states have internal predecessors, (2442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:35:27,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1058 states to 1058 states and 2442 transitions. [2022-03-03 19:35:27,441 INFO L78 Accepts]: Start accepts. Automaton has 1058 states and 2442 transitions. Word has length 31 [2022-03-03 19:35:27,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:35:27,441 INFO L470 AbstractCegarLoop]: Abstraction has 1058 states and 2442 transitions. [2022-03-03 19:35:27,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.40625) internal successors, (77), 31 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:35:27,441 INFO L276 IsEmpty]: Start isEmpty. Operand 1058 states and 2442 transitions. [2022-03-03 19:35:27,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-03 19:35:27,442 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:35:27,442 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:35:27,458 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-03-03 19:35:27,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:35:27,658 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:35:27,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:35:27,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1093419102, now seen corresponding path program 25 times [2022-03-03 19:35:27,658 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:35:27,658 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391670779] [2022-03-03 19:35:27,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:35:27,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:35:27,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:35:27,838 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:27,838 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:35:27,838 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391670779] [2022-03-03 19:35:27,838 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391670779] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:35:27,838 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680395953] [2022-03-03 19:35:27,838 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:35:27,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:35:27,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:35:27,848 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:35:27,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-03-03 19:35:27,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:35:27,869 WARN L261 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 41 conjunts are in the unsatisfiable core [2022-03-03 19:35:27,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:35:28,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:28,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:28,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:28,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:28,284 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:28,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:28,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:28,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:28,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:28,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:28,286 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:28,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:28,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:28,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:28,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:28,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:28,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:28,288 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:28,289 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:28,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:28,291 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 10 disjoint index pairs (out of 36 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 34 [2022-03-03 19:35:28,303 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 2 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:28,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:35:28,698 INFO L353 Elim1Store]: treesize reduction 264, result has 47.7 percent of original size [2022-03-03 19:35:28,699 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 94 treesize of output 280 [2022-03-03 19:35:29,324 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:29,324 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680395953] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:35:29,324 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:35:29,324 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 30 [2022-03-03 19:35:29,324 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719338835] [2022-03-03 19:35:29,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:35:29,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-03 19:35:29,324 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:35:29,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-03 19:35:29,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=755, Unknown=0, NotChecked=0, Total=930 [2022-03-03 19:35:29,325 INFO L87 Difference]: Start difference. First operand 1058 states and 2442 transitions. Second operand has 31 states, 31 states have (on average 2.4838709677419355) internal successors, (77), 30 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:35:30,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:35:30,439 INFO L93 Difference]: Finished difference Result 2806 states and 6196 transitions. [2022-03-03 19:35:30,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-03 19:35:30,439 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.4838709677419355) internal successors, (77), 30 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-03-03 19:35:30,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:35:30,445 INFO L225 Difference]: With dead ends: 2806 [2022-03-03 19:35:30,446 INFO L226 Difference]: Without dead ends: 2425 [2022-03-03 19:35:30,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1007 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=535, Invalid=2657, Unknown=0, NotChecked=0, Total=3192 [2022-03-03 19:35:30,447 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 368 mSDsluCounter, 1428 mSDsCounter, 0 mSdLazyCounter, 962 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 995 SdHoareTripleChecker+Invalid, 1129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 84 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 19:35:30,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [368 Valid, 995 Invalid, 1129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 962 Invalid, 0 Unknown, 84 Unchecked, 0.4s Time] [2022-03-03 19:35:30,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states. [2022-03-03 19:35:30,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 1226. [2022-03-03 19:35:30,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1226 states, 1225 states have (on average 2.2946938775510204) internal successors, (2811), 1225 states have internal predecessors, (2811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:35:30,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 2811 transitions. [2022-03-03 19:35:30,491 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 2811 transitions. Word has length 31 [2022-03-03 19:35:30,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:35:30,491 INFO L470 AbstractCegarLoop]: Abstraction has 1226 states and 2811 transitions. [2022-03-03 19:35:30,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.4838709677419355) internal successors, (77), 30 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:35:30,491 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 2811 transitions. [2022-03-03 19:35:30,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-03 19:35:30,492 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:35:30,492 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:35:30,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-03-03 19:35:30,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:35:30,707 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:35:30,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:35:30,708 INFO L85 PathProgramCache]: Analyzing trace with hash 31141282, now seen corresponding path program 26 times [2022-03-03 19:35:30,708 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:35:30,708 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396140917] [2022-03-03 19:35:30,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:35:30,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:35:30,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:35:30,882 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:30,882 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:35:30,882 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396140917] [2022-03-03 19:35:30,882 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396140917] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:35:30,882 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175085184] [2022-03-03 19:35:30,882 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:35:30,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:35:30,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:35:30,883 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:35:30,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-03-03 19:35:30,904 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:35:30,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:35:30,905 WARN L261 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 41 conjunts are in the unsatisfiable core [2022-03-03 19:35:30,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:35:31,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:31,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:31,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:31,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:31,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:31,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:31,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:31,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:31,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:31,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:31,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:31,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:31,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:31,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:31,338 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:31,338 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:31,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:31,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:31,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:31,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:31,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:31,343 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:31,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:31,344 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:31,344 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 10 disjoint index pairs (out of 36 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 34 [2022-03-03 19:35:31,363 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:31,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:35:31,941 INFO L353 Elim1Store]: treesize reduction 264, result has 47.7 percent of original size [2022-03-03 19:35:31,942 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 94 treesize of output 280 [2022-03-03 19:35:32,301 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:32,301 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175085184] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:35:32,301 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:35:32,301 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 31 [2022-03-03 19:35:32,301 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529603373] [2022-03-03 19:35:32,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:35:32,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-03 19:35:32,301 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:35:32,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-03 19:35:32,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=822, Unknown=0, NotChecked=0, Total=992 [2022-03-03 19:35:32,302 INFO L87 Difference]: Start difference. First operand 1226 states and 2811 transitions. Second operand has 32 states, 32 states have (on average 2.40625) internal successors, (77), 31 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:35:33,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:35:33,045 INFO L93 Difference]: Finished difference Result 2441 states and 5507 transitions. [2022-03-03 19:35:33,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-03 19:35:33,046 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.40625) internal successors, (77), 31 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-03-03 19:35:33,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:35:33,050 INFO L225 Difference]: With dead ends: 2441 [2022-03-03 19:35:33,050 INFO L226 Difference]: Without dead ends: 2260 [2022-03-03 19:35:33,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 782 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=488, Invalid=2268, Unknown=0, NotChecked=0, Total=2756 [2022-03-03 19:35:33,051 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 256 mSDsluCounter, 776 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 164 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:35:33,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [256 Valid, 617 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 464 Invalid, 0 Unknown, 164 Unchecked, 0.2s Time] [2022-03-03 19:35:33,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2260 states. [2022-03-03 19:35:33,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2260 to 788. [2022-03-03 19:35:33,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 787 states have (on average 2.1880559085133418) internal successors, (1722), 787 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:35:33,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 1722 transitions. [2022-03-03 19:35:33,066 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 1722 transitions. Word has length 31 [2022-03-03 19:35:33,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:35:33,067 INFO L470 AbstractCegarLoop]: Abstraction has 788 states and 1722 transitions. [2022-03-03 19:35:33,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.40625) internal successors, (77), 31 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:35:33,067 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 1722 transitions. [2022-03-03 19:35:33,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-03 19:35:33,067 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:35:33,068 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:35:33,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-03-03 19:35:33,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:35:33,283 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:35:33,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:35:33,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1216036466, now seen corresponding path program 27 times [2022-03-03 19:35:33,284 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:35:33,284 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905214448] [2022-03-03 19:35:33,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:35:33,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:35:33,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:35:33,470 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:33,470 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:35:33,470 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905214448] [2022-03-03 19:35:33,471 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905214448] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:35:33,471 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569774421] [2022-03-03 19:35:33,471 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:35:33,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:35:33,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:35:33,472 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:35:33,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-03-03 19:35:33,494 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-03-03 19:35:33,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:35:33,495 WARN L261 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 41 conjunts are in the unsatisfiable core [2022-03-03 19:35:33,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:35:33,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:33,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:33,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:33,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:33,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:33,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:33,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:33,876 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:33,876 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:33,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:33,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:33,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:33,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:33,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:33,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:33,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:33,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:33,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:33,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:33,881 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:33,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:33,882 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:33,884 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 10 disjoint index pairs (out of 36 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 34 [2022-03-03 19:35:33,900 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 2 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:33,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:35:34,457 INFO L353 Elim1Store]: treesize reduction 264, result has 47.7 percent of original size [2022-03-03 19:35:34,457 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 94 treesize of output 280 [2022-03-03 19:35:34,944 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:34,944 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569774421] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:35:34,945 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:35:34,945 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 31 [2022-03-03 19:35:34,945 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502754833] [2022-03-03 19:35:34,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:35:34,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-03 19:35:34,945 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:35:34,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-03 19:35:34,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=809, Unknown=0, NotChecked=0, Total=992 [2022-03-03 19:35:34,946 INFO L87 Difference]: Start difference. First operand 788 states and 1722 transitions. Second operand has 32 states, 32 states have (on average 2.40625) internal successors, (77), 31 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:35:35,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:35:35,880 INFO L93 Difference]: Finished difference Result 1940 states and 4106 transitions. [2022-03-03 19:35:35,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-03 19:35:35,880 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.40625) internal successors, (77), 31 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-03-03 19:35:35,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:35:35,883 INFO L225 Difference]: With dead ends: 1940 [2022-03-03 19:35:35,883 INFO L226 Difference]: Without dead ends: 1621 [2022-03-03 19:35:35,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 775 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=432, Invalid=2220, Unknown=0, NotChecked=0, Total=2652 [2022-03-03 19:35:35,884 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 370 mSDsluCounter, 1342 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 974 SdHoareTripleChecker+Invalid, 1030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 19:35:35,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [370 Valid, 974 Invalid, 1030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 882 Invalid, 0 Unknown, 58 Unchecked, 0.4s Time] [2022-03-03 19:35:35,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1621 states. [2022-03-03 19:35:35,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1621 to 964. [2022-03-03 19:35:35,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 964 states, 963 states have (on average 2.2242990654205608) internal successors, (2142), 963 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:35:35,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 2142 transitions. [2022-03-03 19:35:35,898 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 2142 transitions. Word has length 31 [2022-03-03 19:35:35,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:35:35,898 INFO L470 AbstractCegarLoop]: Abstraction has 964 states and 2142 transitions. [2022-03-03 19:35:35,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.40625) internal successors, (77), 31 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:35:35,898 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 2142 transitions. [2022-03-03 19:35:35,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-03 19:35:35,899 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:35:35,899 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:35:35,915 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-03-03 19:35:36,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:35:36,115 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:35:36,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:35:36,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1954370446, now seen corresponding path program 28 times [2022-03-03 19:35:36,115 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:35:36,115 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364527809] [2022-03-03 19:35:36,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:35:36,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:35:36,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:35:36,319 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:36,319 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:35:36,319 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364527809] [2022-03-03 19:35:36,319 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364527809] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:35:36,319 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108599615] [2022-03-03 19:35:36,319 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:35:36,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:35:36,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:35:36,320 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:35:36,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-03-03 19:35:36,349 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:35:36,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:35:36,350 WARN L261 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 41 conjunts are in the unsatisfiable core [2022-03-03 19:35:36,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:35:36,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:36,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:36,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:36,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:36,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:36,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:36,737 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:36,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:36,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:36,738 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:36,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:36,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:36,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:36,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:36,740 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:36,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:36,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:36,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:36,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:36,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:36,742 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:36,743 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 10 disjoint index pairs (out of 36 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 34 [2022-03-03 19:35:36,758 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:36,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:35:37,301 INFO L353 Elim1Store]: treesize reduction 264, result has 47.7 percent of original size [2022-03-03 19:35:37,301 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 94 treesize of output 280 [2022-03-03 19:35:37,722 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:37,722 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108599615] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:35:37,722 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:35:37,722 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 32 [2022-03-03 19:35:37,722 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913858744] [2022-03-03 19:35:37,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:35:37,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 19:35:37,723 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:35:37,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 19:35:37,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=877, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 19:35:37,723 INFO L87 Difference]: Start difference. First operand 964 states and 2142 transitions. Second operand has 33 states, 33 states have (on average 2.3333333333333335) internal successors, (77), 32 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:35:38,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:35:38,707 INFO L93 Difference]: Finished difference Result 2244 states and 4890 transitions. [2022-03-03 19:35:38,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-03 19:35:38,708 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.3333333333333335) internal successors, (77), 32 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-03-03 19:35:38,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:35:38,712 INFO L225 Difference]: With dead ends: 2244 [2022-03-03 19:35:38,712 INFO L226 Difference]: Without dead ends: 2003 [2022-03-03 19:35:38,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1331 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=780, Invalid=3642, Unknown=0, NotChecked=0, Total=4422 [2022-03-03 19:35:38,713 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 362 mSDsluCounter, 945 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 165 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:35:38,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [362 Valid, 722 Invalid, 868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 614 Invalid, 0 Unknown, 165 Unchecked, 0.3s Time] [2022-03-03 19:35:38,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2003 states. [2022-03-03 19:35:38,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2003 to 578. [2022-03-03 19:35:38,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 577 states have (on average 2.197573656845754) internal successors, (1268), 577 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:35:38,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 1268 transitions. [2022-03-03 19:35:38,724 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 1268 transitions. Word has length 31 [2022-03-03 19:35:38,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:35:38,724 INFO L470 AbstractCegarLoop]: Abstraction has 578 states and 1268 transitions. [2022-03-03 19:35:38,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.3333333333333335) internal successors, (77), 32 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:35:38,725 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 1268 transitions. [2022-03-03 19:35:38,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-03 19:35:38,725 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:35:38,725 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:35:38,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-03-03 19:35:38,941 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,SelfDestructingSolverStorable33 [2022-03-03 19:35:38,941 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:35:38,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:35:38,942 INFO L85 PathProgramCache]: Analyzing trace with hash -663106590, now seen corresponding path program 29 times [2022-03-03 19:35:38,942 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:35:38,942 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271228176] [2022-03-03 19:35:38,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:35:38,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:35:38,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:35:39,154 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:39,155 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:35:39,155 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271228176] [2022-03-03 19:35:39,155 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271228176] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:35:39,155 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226308396] [2022-03-03 19:35:39,155 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:35:39,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:35:39,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:35:39,179 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:35:39,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-03-03 19:35:39,214 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-03-03 19:35:39,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:35:39,215 WARN L261 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 42 conjunts are in the unsatisfiable core [2022-03-03 19:35:39,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:35:39,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:39,686 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:39,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:39,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:39,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:39,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:39,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:39,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:39,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:39,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:39,690 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:39,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:39,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:39,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:39,693 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:39,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:39,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:39,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:39,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:39,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:39,696 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:39,696 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 10 disjoint index pairs (out of 36 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 32 [2022-03-03 19:35:39,715 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:39,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:35:40,108 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:40,109 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:40,110 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:40,110 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:40,112 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:40,112 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:40,112 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:40,113 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:40,114 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:40,114 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:40,114 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:40,115 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:40,115 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:40,116 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:40,117 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:40,117 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:40,118 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:40,119 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:40,119 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:40,119 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:40,120 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:40,120 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:40,121 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:40,121 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:40,121 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:40,122 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:40,123 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:40,125 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:40,125 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:40,125 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:40,172 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:35:40,173 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 30 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 94 treesize of output 208 [2022-03-03 19:35:40,381 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:40,382 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226308396] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:35:40,382 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:35:40,382 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 33 [2022-03-03 19:35:40,382 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78269732] [2022-03-03 19:35:40,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:35:40,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 19:35:40,382 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:35:40,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 19:35:40,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=926, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 19:35:40,383 INFO L87 Difference]: Start difference. First operand 578 states and 1268 transitions. Second operand has 34 states, 34 states have (on average 2.2941176470588234) internal successors, (78), 33 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:35:40,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:35:40,605 INFO L93 Difference]: Finished difference Result 737 states and 1571 transitions. [2022-03-03 19:35:40,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-03 19:35:40,606 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.2941176470588234) internal successors, (78), 33 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-03-03 19:35:40,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:35:40,607 INFO L225 Difference]: With dead ends: 737 [2022-03-03 19:35:40,607 INFO L226 Difference]: Without dead ends: 726 [2022-03-03 19:35:40,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=255, Invalid=1227, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 19:35:40,607 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 112 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 69 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:35:40,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 635 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 182 Invalid, 0 Unknown, 69 Unchecked, 0.1s Time] [2022-03-03 19:35:40,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2022-03-03 19:35:40,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 657. [2022-03-03 19:35:40,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 656 states have (on average 2.182926829268293) internal successors, (1432), 656 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:35:40,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1432 transitions. [2022-03-03 19:35:40,623 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1432 transitions. Word has length 31 [2022-03-03 19:35:40,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:35:40,623 INFO L470 AbstractCegarLoop]: Abstraction has 657 states and 1432 transitions. [2022-03-03 19:35:40,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.2941176470588234) internal successors, (78), 33 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:35:40,623 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1432 transitions. [2022-03-03 19:35:40,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-03 19:35:40,624 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:35:40,624 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:35:40,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-03-03 19:35:40,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:35:40,833 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:35:40,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:35:40,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1342373102, now seen corresponding path program 30 times [2022-03-03 19:35:40,834 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:35:40,834 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714559259] [2022-03-03 19:35:40,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:35:40,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:35:40,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:35:41,030 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:41,030 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:35:41,030 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714559259] [2022-03-03 19:35:41,030 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714559259] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:35:41,030 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093330835] [2022-03-03 19:35:41,030 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:35:41,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:35:41,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:35:41,031 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:35:41,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-03-03 19:35:41,053 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-03-03 19:35:41,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:35:41,054 WARN L261 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 43 conjunts are in the unsatisfiable core [2022-03-03 19:35:41,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:35:41,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:41,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:41,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:41,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:41,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:41,348 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:41,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:41,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:41,349 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:41,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:41,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:41,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:41,350 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:41,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:41,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:41,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:41,352 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 10 disjoint index pairs (out of 28 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 34 [2022-03-03 19:35:41,363 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:41,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:35:41,778 INFO L353 Elim1Store]: treesize reduction 264, result has 47.7 percent of original size [2022-03-03 19:35:41,778 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 94 treesize of output 280 [2022-03-03 19:35:42,250 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:42,250 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093330835] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:35:42,250 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:35:42,250 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 31 [2022-03-03 19:35:42,255 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583314479] [2022-03-03 19:35:42,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:35:42,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-03 19:35:42,255 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:35:42,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-03 19:35:42,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=816, Unknown=0, NotChecked=0, Total=992 [2022-03-03 19:35:42,256 INFO L87 Difference]: Start difference. First operand 657 states and 1432 transitions. Second operand has 32 states, 32 states have (on average 2.3125) internal successors, (74), 31 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:35:43,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:35:43,149 INFO L93 Difference]: Finished difference Result 1434 states and 3086 transitions. [2022-03-03 19:35:43,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-03 19:35:43,150 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.3125) internal successors, (74), 31 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-03-03 19:35:43,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:35:43,152 INFO L225 Difference]: With dead ends: 1434 [2022-03-03 19:35:43,152 INFO L226 Difference]: Without dead ends: 1387 [2022-03-03 19:35:43,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 897 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=708, Invalid=2832, Unknown=0, NotChecked=0, Total=3540 [2022-03-03 19:35:43,155 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 191 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 241 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:35:43,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 959 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 606 Invalid, 0 Unknown, 241 Unchecked, 0.3s Time] [2022-03-03 19:35:43,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1387 states. [2022-03-03 19:35:43,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1387 to 592. [2022-03-03 19:35:43,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 591 states have (on average 2.179357021996616) internal successors, (1288), 591 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:35:43,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 1288 transitions. [2022-03-03 19:35:43,170 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 1288 transitions. Word has length 31 [2022-03-03 19:35:43,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:35:43,170 INFO L470 AbstractCegarLoop]: Abstraction has 592 states and 1288 transitions. [2022-03-03 19:35:43,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.3125) internal successors, (74), 31 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:35:43,170 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 1288 transitions. [2022-03-03 19:35:43,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-03 19:35:43,171 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:35:43,171 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:35:43,188 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-03-03 19:35:43,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:35:43,387 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:35:43,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:35:43,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1725856206, now seen corresponding path program 31 times [2022-03-03 19:35:43,388 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:35:43,388 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822324724] [2022-03-03 19:35:43,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:35:43,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:35:43,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:35:43,582 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-03 19:35:43,582 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:35:43,582 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822324724] [2022-03-03 19:35:43,582 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822324724] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:35:43,582 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071116826] [2022-03-03 19:35:43,582 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:35:43,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:35:43,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:35:43,595 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:35:43,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-03-03 19:35:43,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:35:43,616 WARN L261 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 41 conjunts are in the unsatisfiable core [2022-03-03 19:35:43,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:35:43,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:43,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:43,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:43,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:43,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:43,977 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:43,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:43,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:43,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:43,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:43,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:43,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:43,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:43,980 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:43,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:43,980 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 34 [2022-03-03 19:35:43,992 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:43,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:35:44,453 INFO L353 Elim1Store]: treesize reduction 264, result has 47.7 percent of original size [2022-03-03 19:35:44,453 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 94 treesize of output 280 [2022-03-03 19:35:45,258 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:45,258 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071116826] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:35:45,258 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:35:45,258 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 29 [2022-03-03 19:35:45,258 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742079525] [2022-03-03 19:35:45,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:35:45,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-03-03 19:35:45,259 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:35:45,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-03-03 19:35:45,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=711, Unknown=0, NotChecked=0, Total=870 [2022-03-03 19:35:45,260 INFO L87 Difference]: Start difference. First operand 592 states and 1288 transitions. Second operand has 30 states, 30 states have (on average 2.3) 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) [2022-03-03 19:35:46,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:35:46,274 INFO L93 Difference]: Finished difference Result 2141 states and 4533 transitions. [2022-03-03 19:35:46,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-03 19:35:46,274 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.3) 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 31 [2022-03-03 19:35:46,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:35:46,277 INFO L225 Difference]: With dead ends: 2141 [2022-03-03 19:35:46,277 INFO L226 Difference]: Without dead ends: 1679 [2022-03-03 19:35:46,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 40 SyntacticMatches, 5 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 994 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=624, Invalid=2916, Unknown=0, NotChecked=0, Total=3540 [2022-03-03 19:35:46,278 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 435 mSDsluCounter, 1208 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 1017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 191 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 19:35:46,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [435 Valid, 848 Invalid, 1017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 760 Invalid, 0 Unknown, 191 Unchecked, 0.4s Time] [2022-03-03 19:35:46,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1679 states. [2022-03-03 19:35:46,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1679 to 666. [2022-03-03 19:35:46,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 665 states have (on average 2.186466165413534) internal successors, (1454), 665 states have internal predecessors, (1454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:35:46,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 1454 transitions. [2022-03-03 19:35:46,292 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 1454 transitions. Word has length 31 [2022-03-03 19:35:46,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:35:46,292 INFO L470 AbstractCegarLoop]: Abstraction has 666 states and 1454 transitions. [2022-03-03 19:35:46,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.3) 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) [2022-03-03 19:35:46,292 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 1454 transitions. [2022-03-03 19:35:46,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-03 19:35:46,293 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:35:46,293 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:35:46,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-03-03 19:35:46,506 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,SelfDestructingSolverStorable36 [2022-03-03 19:35:46,507 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:35:46,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:35:46,507 INFO L85 PathProgramCache]: Analyzing trace with hash -434592350, now seen corresponding path program 32 times [2022-03-03 19:35:46,507 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:35:46,507 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650111407] [2022-03-03 19:35:46,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:35:46,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:35:46,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:35:46,784 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:46,785 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:35:46,785 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650111407] [2022-03-03 19:35:46,785 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650111407] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:35:46,785 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481658236] [2022-03-03 19:35:46,785 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:35:46,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:35:46,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:35:46,786 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:35:46,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-03-03 19:35:46,814 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:35:46,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:35:46,815 WARN L261 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 41 conjunts are in the unsatisfiable core [2022-03-03 19:35:46,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:35:47,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:47,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:47,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:47,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:47,290 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:47,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:47,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:47,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:47,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:47,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:47,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:47,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:47,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:47,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:47,295 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:47,296 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 34 [2022-03-03 19:35:47,314 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:47,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:35:47,889 INFO L353 Elim1Store]: treesize reduction 264, result has 47.7 percent of original size [2022-03-03 19:35:47,889 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 94 treesize of output 280 [2022-03-03 19:35:48,382 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:48,383 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481658236] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:35:48,383 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:35:48,383 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 30 [2022-03-03 19:35:48,383 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543806935] [2022-03-03 19:35:48,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:35:48,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-03 19:35:48,384 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:35:48,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-03 19:35:48,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=763, Unknown=0, NotChecked=0, Total=930 [2022-03-03 19:35:48,385 INFO L87 Difference]: Start difference. First operand 666 states and 1454 transitions. Second operand has 31 states, 31 states have (on average 2.2903225806451615) internal successors, (71), 30 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:35:48,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:35:48,978 INFO L93 Difference]: Finished difference Result 1451 states and 3127 transitions. [2022-03-03 19:35:48,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-03 19:35:48,978 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.2903225806451615) internal successors, (71), 30 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-03-03 19:35:48,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:35:48,992 INFO L225 Difference]: With dead ends: 1451 [2022-03-03 19:35:48,992 INFO L226 Difference]: Without dead ends: 1396 [2022-03-03 19:35:48,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 40 SyntacticMatches, 4 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 737 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=503, Invalid=2359, Unknown=0, NotChecked=0, Total=2862 [2022-03-03 19:35:48,993 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 222 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 208 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:35:48,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [222 Valid, 658 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 444 Invalid, 0 Unknown, 208 Unchecked, 0.2s Time] [2022-03-03 19:35:48,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1396 states. [2022-03-03 19:35:49,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1396 to 691. [2022-03-03 19:35:49,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 690 states have (on average 2.1782608695652175) internal successors, (1503), 690 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:35:49,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1503 transitions. [2022-03-03 19:35:49,003 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1503 transitions. Word has length 31 [2022-03-03 19:35:49,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:35:49,003 INFO L470 AbstractCegarLoop]: Abstraction has 691 states and 1503 transitions. [2022-03-03 19:35:49,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.2903225806451615) internal successors, (71), 30 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:35:49,003 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1503 transitions. [2022-03-03 19:35:49,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-03 19:35:49,004 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:35:49,004 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:35:49,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-03-03 19:35:49,219 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,SelfDestructingSolverStorable37 [2022-03-03 19:35:49,220 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:35:49,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:35:49,220 INFO L85 PathProgramCache]: Analyzing trace with hash 23229282, now seen corresponding path program 33 times [2022-03-03 19:35:49,220 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:35:49,220 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818079350] [2022-03-03 19:35:49,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:35:49,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:35:49,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:35:49,419 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:49,420 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:35:49,420 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818079350] [2022-03-03 19:35:49,420 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818079350] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:35:49,420 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112308123] [2022-03-03 19:35:49,420 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:35:49,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:35:49,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:35:49,421 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:35:49,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-03-03 19:35:49,443 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-03-03 19:35:49,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:35:49,443 WARN L261 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 41 conjunts are in the unsatisfiable core [2022-03-03 19:35:49,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:35:49,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:49,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:49,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:49,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:49,707 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:49,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:49,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:49,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:49,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:49,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:49,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:49,710 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 34 [2022-03-03 19:35:49,721 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 2 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:49,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:35:50,104 INFO L353 Elim1Store]: treesize reduction 264, result has 47.7 percent of original size [2022-03-03 19:35:50,104 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 94 treesize of output 280 [2022-03-03 19:35:50,456 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:50,456 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112308123] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:35:50,456 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:35:50,456 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 28 [2022-03-03 19:35:50,456 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012216628] [2022-03-03 19:35:50,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:35:50,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-03-03 19:35:50,457 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:35:50,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-03-03 19:35:50,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=659, Unknown=0, NotChecked=0, Total=812 [2022-03-03 19:35:50,457 INFO L87 Difference]: Start difference. First operand 691 states and 1503 transitions. Second operand has 29 states, 29 states have (on average 2.3448275862068964) internal successors, (68), 28 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:35:51,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:35:51,331 INFO L93 Difference]: Finished difference Result 1827 states and 3810 transitions. [2022-03-03 19:35:51,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-03 19:35:51,331 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.3448275862068964) internal successors, (68), 28 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-03-03 19:35:51,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:35:51,337 INFO L225 Difference]: With dead ends: 1827 [2022-03-03 19:35:51,338 INFO L226 Difference]: Without dead ends: 1522 [2022-03-03 19:35:51,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 40 SyntacticMatches, 6 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=405, Invalid=1851, Unknown=0, NotChecked=0, Total=2256 [2022-03-03 19:35:51,339 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 392 mSDsluCounter, 1162 mSDsCounter, 0 mSdLazyCounter, 801 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 868 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 67 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 19:35:51,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [392 Valid, 868 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 801 Invalid, 0 Unknown, 67 Unchecked, 0.4s Time] [2022-03-03 19:35:51,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1522 states. [2022-03-03 19:35:51,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1522 to 826. [2022-03-03 19:35:51,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 826 states, 825 states have (on average 2.1866666666666665) internal successors, (1804), 825 states have internal predecessors, (1804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:35:51,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 1804 transitions. [2022-03-03 19:35:51,353 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 1804 transitions. Word has length 31 [2022-03-03 19:35:51,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:35:51,353 INFO L470 AbstractCegarLoop]: Abstraction has 826 states and 1804 transitions. [2022-03-03 19:35:51,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.3448275862068964) internal successors, (68), 28 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:35:51,353 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 1804 transitions. [2022-03-03 19:35:51,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-03 19:35:51,354 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:35:51,354 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:35:51,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-03-03 19:35:51,570 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,SelfDestructingSolverStorable38 [2022-03-03 19:35:51,570 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:35:51,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:35:51,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1937419986, now seen corresponding path program 34 times [2022-03-03 19:35:51,571 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:35:51,571 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776766763] [2022-03-03 19:35:51,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:35:51,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:35:51,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:35:51,753 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:51,753 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:35:51,753 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776766763] [2022-03-03 19:35:51,754 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776766763] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:35:51,754 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964918320] [2022-03-03 19:35:51,754 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:35:51,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:35:51,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:35:51,755 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:35:51,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-03-03 19:35:51,776 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:35:51,776 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:35:51,777 WARN L261 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 41 conjunts are in the unsatisfiable core [2022-03-03 19:35:51,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:35:52,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:52,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:52,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:52,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:52,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:52,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:52,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:52,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:52,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:52,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:52,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:52,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:52,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:52,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:52,139 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:52,140 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 34 [2022-03-03 19:35:52,156 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:52,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:35:52,656 INFO L353 Elim1Store]: treesize reduction 264, result has 47.7 percent of original size [2022-03-03 19:35:52,656 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 94 treesize of output 280 [2022-03-03 19:35:53,302 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:53,302 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964918320] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:35:53,302 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:35:53,302 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 28 [2022-03-03 19:35:53,302 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132748163] [2022-03-03 19:35:53,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:35:53,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-03-03 19:35:53,303 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:35:53,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-03-03 19:35:53,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=662, Unknown=0, NotChecked=0, Total=812 [2022-03-03 19:35:53,303 INFO L87 Difference]: Start difference. First operand 826 states and 1804 transitions. Second operand has 29 states, 29 states have (on average 2.3448275862068964) internal successors, (68), 28 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:35:54,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:35:54,024 INFO L93 Difference]: Finished difference Result 1711 states and 3652 transitions. [2022-03-03 19:35:54,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-03 19:35:54,026 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.3448275862068964) internal successors, (68), 28 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-03-03 19:35:54,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:35:54,029 INFO L225 Difference]: With dead ends: 1711 [2022-03-03 19:35:54,029 INFO L226 Difference]: Without dead ends: 1627 [2022-03-03 19:35:54,029 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 40 SyntacticMatches, 6 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 546 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=401, Invalid=1951, Unknown=0, NotChecked=0, Total=2352 [2022-03-03 19:35:54,029 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 249 mSDsluCounter, 874 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 82 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:35:54,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [249 Valid, 774 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 620 Invalid, 0 Unknown, 82 Unchecked, 0.3s Time] [2022-03-03 19:35:54,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1627 states. [2022-03-03 19:35:54,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1627 to 814. [2022-03-03 19:35:54,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 813 states have (on average 2.1894218942189423) internal successors, (1780), 813 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:35:54,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1780 transitions. [2022-03-03 19:35:54,041 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 1780 transitions. Word has length 31 [2022-03-03 19:35:54,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:35:54,041 INFO L470 AbstractCegarLoop]: Abstraction has 814 states and 1780 transitions. [2022-03-03 19:35:54,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.3448275862068964) internal successors, (68), 28 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:35:54,041 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1780 transitions. [2022-03-03 19:35:54,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-03 19:35:54,042 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:35:54,042 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:35:54,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-03-03 19:35:54,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-03-03 19:35:54,261 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:35:54,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:35:54,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1855913774, now seen corresponding path program 35 times [2022-03-03 19:35:54,261 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:35:54,261 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147784205] [2022-03-03 19:35:54,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:35:54,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:35:54,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:35:54,479 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:54,480 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:35:54,480 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147784205] [2022-03-03 19:35:54,480 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147784205] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:35:54,480 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939442108] [2022-03-03 19:35:54,480 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:35:54,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:35:54,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:35:54,481 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:35:54,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-03-03 19:35:54,504 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-03-03 19:35:54,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:35:54,505 WARN L261 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 40 conjunts are in the unsatisfiable core [2022-03-03 19:35:54,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:35:55,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:55,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:55,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:55,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:55,095 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:55,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:55,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:55,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:55,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:55,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:55,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:55,099 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:55,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:55,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:55,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:55,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:55,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:55,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:55,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:55,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:55,104 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:55,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:55,105 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:55,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:35:55,106 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:55,107 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 10 disjoint index pairs (out of 45 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 24 [2022-03-03 19:35:55,134 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:55,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:35:56,290 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:56,290 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:56,291 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:56,292 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:56,293 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:56,293 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:56,293 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:56,295 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:56,295 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:56,295 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:56,296 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:56,296 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:56,296 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:56,297 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:56,297 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:56,298 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:56,299 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:56,300 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:56,300 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:56,300 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:56,300 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:56,301 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:56,301 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:56,302 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:56,302 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:56,302 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:35:56,380 INFO L353 Elim1Store]: treesize reduction 46, result has 76.4 percent of original size [2022-03-03 19:35:56,381 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 26 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 19 case distinctions, treesize of input 88 treesize of output 188 [2022-03-03 19:35:57,118 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:35:57,119 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939442108] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:35:57,119 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:35:57,119 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 35 [2022-03-03 19:35:57,119 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125676374] [2022-03-03 19:35:57,119 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:35:57,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-03-03 19:35:57,120 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:35:57,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-03-03 19:35:57,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=1020, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 19:35:57,120 INFO L87 Difference]: Start difference. First operand 814 states and 1780 transitions. Second operand has 36 states, 36 states have (on average 2.3333333333333335) internal successors, (84), 35 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:36:00,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:36:00,227 INFO L93 Difference]: Finished difference Result 1153 states and 2507 transitions. [2022-03-03 19:36:00,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-03 19:36:00,227 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.3333333333333335) internal successors, (84), 35 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-03-03 19:36:00,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:36:00,230 INFO L225 Difference]: With dead ends: 1153 [2022-03-03 19:36:00,230 INFO L226 Difference]: Without dead ends: 1138 [2022-03-03 19:36:00,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 493 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=467, Invalid=2185, Unknown=0, NotChecked=0, Total=2652 [2022-03-03 19:36:00,231 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 214 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 311 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:36:00,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [214 Valid, 669 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 126 Invalid, 0 Unknown, 311 Unchecked, 0.1s Time] [2022-03-03 19:36:00,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1138 states. [2022-03-03 19:36:00,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1138 to 910. [2022-03-03 19:36:00,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 909 states have (on average 2.2222222222222223) internal successors, (2020), 909 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:36:00,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 2020 transitions. [2022-03-03 19:36:00,247 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 2020 transitions. Word has length 31 [2022-03-03 19:36:00,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:36:00,247 INFO L470 AbstractCegarLoop]: Abstraction has 910 states and 2020 transitions. [2022-03-03 19:36:00,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.3333333333333335) internal successors, (84), 35 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:36:00,247 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 2020 transitions. [2022-03-03 19:36:00,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-03 19:36:00,248 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:36:00,248 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:36:00,280 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-03-03 19:36:00,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:36:00,464 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:36:00,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:36:00,464 INFO L85 PathProgramCache]: Analyzing trace with hash -481439902, now seen corresponding path program 36 times [2022-03-03 19:36:00,464 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:36:00,464 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935411514] [2022-03-03 19:36:00,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:36:00,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:36:00,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:36:00,709 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:36:00,710 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:36:00,710 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935411514] [2022-03-03 19:36:00,710 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935411514] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:36:00,710 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755889104] [2022-03-03 19:36:00,710 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:36:00,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:36:00,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:36:00,711 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:36:00,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-03-03 19:36:00,738 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-03-03 19:36:00,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:36:00,741 WARN L261 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 41 conjunts are in the unsatisfiable core [2022-03-03 19:36:00,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:36:01,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:01,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:01,433 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:01,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:01,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:01,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:01,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:01,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:01,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:01,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:01,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:01,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:01,439 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:01,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:01,440 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 34 [2022-03-03 19:36:01,459 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:36:01,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:36:02,699 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:02,699 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:02,700 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:02,703 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:02,703 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:02,704 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:02,705 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:02,707 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:02,708 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:02,708 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:02,709 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:02,710 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:02,711 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:02,711 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:02,713 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:02,713 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:02,714 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:02,715 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:02,716 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:02,717 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:02,717 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:02,720 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:02,720 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:02,721 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:02,722 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:02,722 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:02,857 INFO L353 Elim1Store]: treesize reduction 46, result has 76.4 percent of original size [2022-03-03 19:36:02,858 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 26 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 19 case distinctions, treesize of input 88 treesize of output 188 [2022-03-03 19:36:03,319 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:36:03,320 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755889104] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:36:03,320 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:36:03,320 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 31 [2022-03-03 19:36:03,320 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738162795] [2022-03-03 19:36:03,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:36:03,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-03 19:36:03,320 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:36:03,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-03 19:36:03,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=788, Unknown=0, NotChecked=0, Total=992 [2022-03-03 19:36:03,321 INFO L87 Difference]: Start difference. First operand 910 states and 2020 transitions. Second operand has 32 states, 32 states have (on average 2.1875) internal successors, (70), 31 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:36:04,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:36:04,584 INFO L93 Difference]: Finished difference Result 1248 states and 2716 transitions. [2022-03-03 19:36:04,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-03 19:36:04,587 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.1875) internal successors, (70), 31 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-03-03 19:36:04,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:36:04,589 INFO L225 Difference]: With dead ends: 1248 [2022-03-03 19:36:04,589 INFO L226 Difference]: Without dead ends: 1209 [2022-03-03 19:36:04,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 45 SyntacticMatches, 5 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=534, Invalid=2328, Unknown=0, NotChecked=0, Total=2862 [2022-03-03 19:36:04,589 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 221 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 309 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 19:36:04,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [221 Valid, 607 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 120 Invalid, 0 Unknown, 309 Unchecked, 0.0s Time] [2022-03-03 19:36:04,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2022-03-03 19:36:04,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 994. [2022-03-03 19:36:04,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 994 states, 993 states have (on average 2.229607250755287) internal successors, (2214), 993 states have internal predecessors, (2214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:36:04,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 994 states to 994 states and 2214 transitions. [2022-03-03 19:36:04,602 INFO L78 Accepts]: Start accepts. Automaton has 994 states and 2214 transitions. Word has length 31 [2022-03-03 19:36:04,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:36:04,604 INFO L470 AbstractCegarLoop]: Abstraction has 994 states and 2214 transitions. [2022-03-03 19:36:04,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.1875) internal successors, (70), 31 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:36:04,604 INFO L276 IsEmpty]: Start isEmpty. Operand 994 states and 2214 transitions. [2022-03-03 19:36:04,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-03 19:36:04,605 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:36:04,605 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:36:04,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-03-03 19:36:04,822 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,SelfDestructingSolverStorable41 [2022-03-03 19:36:04,822 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:36:04,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:36:04,822 INFO L85 PathProgramCache]: Analyzing trace with hash 156759775, now seen corresponding path program 37 times [2022-03-03 19:36:04,823 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:36:04,823 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737789500] [2022-03-03 19:36:04,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:36:04,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:36:04,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:36:05,010 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 2 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:36:05,010 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:36:05,010 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737789500] [2022-03-03 19:36:05,010 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737789500] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:36:05,010 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493274411] [2022-03-03 19:36:05,010 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:36:05,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:36:05,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:36:05,011 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:36:05,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-03-03 19:36:05,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:36:05,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 41 conjunts are in the unsatisfiable core [2022-03-03 19:36:05,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:36:05,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:05,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:05,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:05,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:05,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:05,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:05,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:05,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:05,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:05,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:05,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:05,480 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:05,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:05,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:05,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:05,482 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:05,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:05,483 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 34 [2022-03-03 19:36:05,495 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 2 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:36:05,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:36:06,072 INFO L353 Elim1Store]: treesize reduction 264, result has 47.7 percent of original size [2022-03-03 19:36:06,072 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 94 treesize of output 280 [2022-03-03 19:36:06,545 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 2 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:36:06,545 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493274411] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:36:06,545 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:36:06,545 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 29 [2022-03-03 19:36:06,546 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127102717] [2022-03-03 19:36:06,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:36:06,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-03-03 19:36:06,546 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:36:06,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-03-03 19:36:06,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=709, Unknown=0, NotChecked=0, Total=870 [2022-03-03 19:36:06,546 INFO L87 Difference]: Start difference. First operand 994 states and 2214 transitions. Second operand has 30 states, 30 states have (on average 2.6666666666666665) internal successors, (80), 29 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:36:07,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:36:07,607 INFO L93 Difference]: Finished difference Result 2543 states and 5462 transitions. [2022-03-03 19:36:07,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-03 19:36:07,607 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.6666666666666665) internal successors, (80), 29 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-03-03 19:36:07,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:36:07,610 INFO L225 Difference]: With dead ends: 2543 [2022-03-03 19:36:07,610 INFO L226 Difference]: Without dead ends: 2235 [2022-03-03 19:36:07,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 48 SyntacticMatches, 4 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 862 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=537, Invalid=2543, Unknown=0, NotChecked=0, Total=3080 [2022-03-03 19:36:07,612 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 356 mSDsluCounter, 1309 mSDsCounter, 0 mSdLazyCounter, 808 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 1060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 169 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 19:36:07,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [356 Valid, 963 Invalid, 1060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 808 Invalid, 0 Unknown, 169 Unchecked, 0.4s Time] [2022-03-03 19:36:07,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2235 states. [2022-03-03 19:36:07,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2235 to 1237. [2022-03-03 19:36:07,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1237 states, 1236 states have (on average 2.26294498381877) internal successors, (2797), 1236 states have internal predecessors, (2797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:36:07,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1237 states to 1237 states and 2797 transitions. [2022-03-03 19:36:07,627 INFO L78 Accepts]: Start accepts. Automaton has 1237 states and 2797 transitions. Word has length 34 [2022-03-03 19:36:07,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:36:07,628 INFO L470 AbstractCegarLoop]: Abstraction has 1237 states and 2797 transitions. [2022-03-03 19:36:07,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.6666666666666665) internal successors, (80), 29 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:36:07,628 INFO L276 IsEmpty]: Start isEmpty. Operand 1237 states and 2797 transitions. [2022-03-03 19:36:07,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-03 19:36:07,629 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:36:07,629 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:36:07,654 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-03-03 19:36:07,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2022-03-03 19:36:07,845 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:36:07,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:36:07,845 INFO L85 PathProgramCache]: Analyzing trace with hash -839039841, now seen corresponding path program 38 times [2022-03-03 19:36:07,845 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:36:07,846 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294619923] [2022-03-03 19:36:07,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:36:07,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:36:07,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:36:08,014 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:36:08,015 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:36:08,015 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294619923] [2022-03-03 19:36:08,015 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294619923] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:36:08,015 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339114876] [2022-03-03 19:36:08,015 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:36:08,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:36:08,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:36:08,035 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:36:08,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-03-03 19:36:08,058 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:36:08,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:36:08,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 41 conjunts are in the unsatisfiable core [2022-03-03 19:36:08,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:36:08,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:08,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:08,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:08,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:08,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:08,415 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:08,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:08,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:08,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:08,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:08,431 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:08,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:08,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:08,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:08,433 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 34 [2022-03-03 19:36:08,444 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:36:08,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:36:08,952 INFO L353 Elim1Store]: treesize reduction 264, result has 47.7 percent of original size [2022-03-03 19:36:08,952 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 94 treesize of output 280 [2022-03-03 19:36:09,431 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 5 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:36:09,431 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339114876] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:36:09,431 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:36:09,431 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 29 [2022-03-03 19:36:09,432 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249080864] [2022-03-03 19:36:09,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:36:09,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-03-03 19:36:09,432 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:36:09,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-03-03 19:36:09,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=713, Unknown=0, NotChecked=0, Total=870 [2022-03-03 19:36:09,432 INFO L87 Difference]: Start difference. First operand 1237 states and 2797 transitions. Second operand has 30 states, 30 states have (on average 2.6666666666666665) internal successors, (80), 29 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:36:10,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:36:10,298 INFO L93 Difference]: Finished difference Result 2698 states and 5891 transitions. [2022-03-03 19:36:10,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-03 19:36:10,298 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.6666666666666665) internal successors, (80), 29 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-03-03 19:36:10,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:36:10,301 INFO L225 Difference]: With dead ends: 2698 [2022-03-03 19:36:10,302 INFO L226 Difference]: Without dead ends: 2373 [2022-03-03 19:36:10,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 579 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=406, Invalid=1946, Unknown=0, NotChecked=0, Total=2352 [2022-03-03 19:36:10,302 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 384 mSDsluCounter, 1446 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 1074 SdHoareTripleChecker+Invalid, 1129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 267 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 19:36:10,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [384 Valid, 1074 Invalid, 1129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 775 Invalid, 0 Unknown, 267 Unchecked, 0.4s Time] [2022-03-03 19:36:10,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2373 states. [2022-03-03 19:36:10,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2373 to 1308. [2022-03-03 19:36:10,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1308 states, 1307 states have (on average 2.2478959449120124) internal successors, (2938), 1307 states have internal predecessors, (2938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:36:10,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1308 states to 1308 states and 2938 transitions. [2022-03-03 19:36:10,319 INFO L78 Accepts]: Start accepts. Automaton has 1308 states and 2938 transitions. Word has length 34 [2022-03-03 19:36:10,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:36:10,319 INFO L470 AbstractCegarLoop]: Abstraction has 1308 states and 2938 transitions. [2022-03-03 19:36:10,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.6666666666666665) internal successors, (80), 29 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:36:10,319 INFO L276 IsEmpty]: Start isEmpty. Operand 1308 states and 2938 transitions. [2022-03-03 19:36:10,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-03 19:36:10,320 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:36:10,320 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:36:10,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-03-03 19:36:10,524 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,SelfDestructingSolverStorable43 [2022-03-03 19:36:10,525 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:36:10,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:36:10,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1044819745, now seen corresponding path program 39 times [2022-03-03 19:36:10,525 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:36:10,525 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305210718] [2022-03-03 19:36:10,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:36:10,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:36:10,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:36:10,731 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:36:10,731 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:36:10,731 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305210718] [2022-03-03 19:36:10,731 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305210718] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:36:10,731 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897601312] [2022-03-03 19:36:10,731 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:36:10,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:36:10,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:36:10,732 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:36:10,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-03-03 19:36:10,755 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-03-03 19:36:10,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:36:10,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 41 conjunts are in the unsatisfiable core [2022-03-03 19:36:10,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:36:11,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:11,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:11,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:11,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:11,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:11,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:11,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:11,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:11,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:11,111 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:11,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:11,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:11,113 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:11,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:11,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:11,114 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 34 [2022-03-03 19:36:11,128 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 2 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:36:11,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:36:11,612 INFO L353 Elim1Store]: treesize reduction 264, result has 47.7 percent of original size [2022-03-03 19:36:11,612 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 94 treesize of output 280 [2022-03-03 19:36:12,136 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 2 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:36:12,136 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897601312] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:36:12,136 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:36:12,136 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 29 [2022-03-03 19:36:12,136 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766268316] [2022-03-03 19:36:12,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:36:12,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-03-03 19:36:12,137 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:36:12,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-03-03 19:36:12,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=707, Unknown=0, NotChecked=0, Total=870 [2022-03-03 19:36:12,138 INFO L87 Difference]: Start difference. First operand 1308 states and 2938 transitions. Second operand has 30 states, 30 states have (on average 2.6666666666666665) internal successors, (80), 29 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:36:13,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:36:13,223 INFO L93 Difference]: Finished difference Result 3651 states and 7798 transitions. [2022-03-03 19:36:13,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-03 19:36:13,223 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.6666666666666665) internal successors, (80), 29 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-03-03 19:36:13,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:36:13,227 INFO L225 Difference]: With dead ends: 3651 [2022-03-03 19:36:13,227 INFO L226 Difference]: Without dead ends: 3378 [2022-03-03 19:36:13,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 48 SyntacticMatches, 6 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 762 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=469, Invalid=2287, Unknown=0, NotChecked=0, Total=2756 [2022-03-03 19:36:13,229 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 346 mSDsluCounter, 1525 mSDsCounter, 0 mSdLazyCounter, 947 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 1135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 115 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 19:36:13,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [346 Valid, 1211 Invalid, 1135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 947 Invalid, 0 Unknown, 115 Unchecked, 0.4s Time] [2022-03-03 19:36:13,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3378 states. [2022-03-03 19:36:13,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3378 to 1870. [2022-03-03 19:36:13,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1870 states, 1869 states have (on average 2.2659176029962547) internal successors, (4235), 1869 states have internal predecessors, (4235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:36:13,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1870 states to 1870 states and 4235 transitions. [2022-03-03 19:36:13,262 INFO L78 Accepts]: Start accepts. Automaton has 1870 states and 4235 transitions. Word has length 34 [2022-03-03 19:36:13,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:36:13,262 INFO L470 AbstractCegarLoop]: Abstraction has 1870 states and 4235 transitions. [2022-03-03 19:36:13,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.6666666666666665) internal successors, (80), 29 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:36:13,262 INFO L276 IsEmpty]: Start isEmpty. Operand 1870 states and 4235 transitions. [2022-03-03 19:36:13,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-03 19:36:13,264 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:36:13,264 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:36:13,280 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-03-03 19:36:13,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:36:13,480 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:36:13,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:36:13,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1177399239, now seen corresponding path program 40 times [2022-03-03 19:36:13,480 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:36:13,480 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199816600] [2022-03-03 19:36:13,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:36:13,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:36:13,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:36:13,740 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 19:36:13,740 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:36:13,740 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199816600] [2022-03-03 19:36:13,740 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199816600] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:36:13,740 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636051336] [2022-03-03 19:36:13,741 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:36:13,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:36:13,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:36:13,756 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:36:13,799 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:36:13,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:36:13,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-03-03 19:36:13,800 WARN L261 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 43 conjunts are in the unsatisfiable core [2022-03-03 19:36:13,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:36:14,106 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:14,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:14,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:14,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:14,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:14,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:14,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:14,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:14,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:14,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:14,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:14,110 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 34 [2022-03-03 19:36:14,130 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 19:36:14,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:36:14,566 INFO L353 Elim1Store]: treesize reduction 264, result has 47.7 percent of original size [2022-03-03 19:36:14,567 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 94 treesize of output 280 [2022-03-03 19:36:15,135 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 3 proven. 52 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 19:36:15,135 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636051336] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:36:15,135 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:36:15,135 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 29 [2022-03-03 19:36:15,135 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721620100] [2022-03-03 19:36:15,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:36:15,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-03-03 19:36:15,136 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:36:15,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-03-03 19:36:15,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=714, Unknown=0, NotChecked=0, Total=870 [2022-03-03 19:36:15,136 INFO L87 Difference]: Start difference. First operand 1870 states and 4235 transitions. Second operand has 30 states, 30 states have (on average 2.4) internal successors, (72), 29 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:36:15,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:36:15,731 INFO L93 Difference]: Finished difference Result 3091 states and 6858 transitions. [2022-03-03 19:36:15,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-03 19:36:15,732 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.4) internal successors, (72), 29 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-03-03 19:36:15,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:36:15,735 INFO L225 Difference]: With dead ends: 3091 [2022-03-03 19:36:15,735 INFO L226 Difference]: Without dead ends: 2986 [2022-03-03 19:36:15,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=456, Invalid=2094, Unknown=0, NotChecked=0, Total=2550 [2022-03-03 19:36:15,736 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 239 mSDsluCounter, 1082 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 969 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 373 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:36:15,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [239 Valid, 969 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 631 Invalid, 0 Unknown, 373 Unchecked, 0.2s Time] [2022-03-03 19:36:15,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2986 states. [2022-03-03 19:36:15,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2986 to 1914. [2022-03-03 19:36:15,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1914 states, 1913 states have (on average 2.261369576581286) internal successors, (4326), 1913 states have internal predecessors, (4326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:36:15,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 4326 transitions. [2022-03-03 19:36:15,759 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 4326 transitions. Word has length 34 [2022-03-03 19:36:15,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:36:15,759 INFO L470 AbstractCegarLoop]: Abstraction has 1914 states and 4326 transitions. [2022-03-03 19:36:15,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.4) internal successors, (72), 29 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:36:15,759 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 4326 transitions. [2022-03-03 19:36:15,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-03 19:36:15,762 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:36:15,762 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:36:15,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-03-03 19:36:15,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:36:15,977 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:36:15,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:36:15,977 INFO L85 PathProgramCache]: Analyzing trace with hash -535331473, now seen corresponding path program 41 times [2022-03-03 19:36:15,977 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:36:15,977 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123850151] [2022-03-03 19:36:15,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:36:15,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:36:15,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:36:16,233 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:36:16,234 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:36:16,234 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123850151] [2022-03-03 19:36:16,234 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123850151] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:36:16,234 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551623800] [2022-03-03 19:36:16,234 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:36:16,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:36:16,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:36:16,235 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:36:16,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-03-03 19:36:16,258 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-03-03 19:36:16,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:36:16,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 41 conjunts are in the unsatisfiable core [2022-03-03 19:36:16,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:36:16,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:16,740 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:16,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:16,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:16,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:16,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:16,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:16,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:16,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:16,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:16,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:16,745 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 34 [2022-03-03 19:36:16,765 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:36:16,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:36:17,362 INFO L353 Elim1Store]: treesize reduction 264, result has 47.7 percent of original size [2022-03-03 19:36:17,362 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 94 treesize of output 280 [2022-03-03 19:36:17,875 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 5 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:36:17,875 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551623800] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:36:17,875 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:36:17,875 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 29 [2022-03-03 19:36:17,875 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977153079] [2022-03-03 19:36:17,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:36:17,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-03-03 19:36:17,876 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:36:17,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-03-03 19:36:17,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=714, Unknown=0, NotChecked=0, Total=870 [2022-03-03 19:36:17,876 INFO L87 Difference]: Start difference. First operand 1914 states and 4326 transitions. Second operand has 30 states, 30 states have (on average 2.566666666666667) internal successors, (77), 29 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:36:18,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:36:18,888 INFO L93 Difference]: Finished difference Result 3135 states and 6935 transitions. [2022-03-03 19:36:18,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-03 19:36:18,888 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.566666666666667) internal successors, (77), 29 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-03-03 19:36:18,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:36:18,892 INFO L225 Difference]: With dead ends: 3135 [2022-03-03 19:36:18,892 INFO L226 Difference]: Without dead ends: 3045 [2022-03-03 19:36:18,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 49 SyntacticMatches, 5 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 927 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=627, Invalid=3033, Unknown=0, NotChecked=0, Total=3660 [2022-03-03 19:36:18,893 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 233 mSDsluCounter, 1329 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 1283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 550 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:36:18,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 1182 Invalid, 1283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 683 Invalid, 0 Unknown, 550 Unchecked, 0.3s Time] [2022-03-03 19:36:18,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3045 states. [2022-03-03 19:36:18,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3045 to 1941. [2022-03-03 19:36:18,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1941 states, 1940 states have (on average 2.265463917525773) internal successors, (4395), 1940 states have internal predecessors, (4395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:36:18,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1941 states to 1941 states and 4395 transitions. [2022-03-03 19:36:18,938 INFO L78 Accepts]: Start accepts. Automaton has 1941 states and 4395 transitions. Word has length 34 [2022-03-03 19:36:18,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:36:18,938 INFO L470 AbstractCegarLoop]: Abstraction has 1941 states and 4395 transitions. [2022-03-03 19:36:18,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.566666666666667) internal successors, (77), 29 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:36:18,939 INFO L276 IsEmpty]: Start isEmpty. Operand 1941 states and 4395 transitions. [2022-03-03 19:36:18,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-03 19:36:18,940 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:36:18,940 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:36:18,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-03-03 19:36:19,155 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,SelfDestructingSolverStorable46 [2022-03-03 19:36:19,155 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:36:19,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:36:19,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1762915409, now seen corresponding path program 42 times [2022-03-03 19:36:19,156 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:36:19,156 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528435144] [2022-03-03 19:36:19,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:36:19,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:36:19,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:36:19,358 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:36:19,358 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:36:19,358 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528435144] [2022-03-03 19:36:19,358 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528435144] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:36:19,358 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892695587] [2022-03-03 19:36:19,358 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:36:19,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:36:19,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:36:19,359 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:36:19,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-03-03 19:36:19,391 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-03-03 19:36:19,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:36:19,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 41 conjunts are in the unsatisfiable core [2022-03-03 19:36:19,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:36:19,715 INFO L353 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2022-03-03 19:36:19,716 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 88 treesize of output 34 [2022-03-03 19:36:19,730 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:36:19,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:36:20,228 INFO L353 Elim1Store]: treesize reduction 264, result has 47.7 percent of original size [2022-03-03 19:36:20,229 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 94 treesize of output 280 [2022-03-03 19:36:21,100 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 6 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:36:21,101 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892695587] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:36:21,101 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:36:21,101 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 28 [2022-03-03 19:36:21,101 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089873917] [2022-03-03 19:36:21,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:36:21,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-03-03 19:36:21,101 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:36:21,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-03-03 19:36:21,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=667, Unknown=0, NotChecked=0, Total=812 [2022-03-03 19:36:21,102 INFO L87 Difference]: Start difference. First operand 1941 states and 4395 transitions. Second operand has 29 states, 29 states have (on average 2.5517241379310347) internal successors, (74), 28 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:36:21,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:36:21,819 INFO L93 Difference]: Finished difference Result 2951 states and 6561 transitions. [2022-03-03 19:36:21,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-03 19:36:21,819 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.5517241379310347) internal successors, (74), 28 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-03-03 19:36:21,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:36:21,822 INFO L225 Difference]: With dead ends: 2951 [2022-03-03 19:36:21,822 INFO L226 Difference]: Without dead ends: 2901 [2022-03-03 19:36:21,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 46 SyntacticMatches, 6 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=374, Invalid=1788, Unknown=0, NotChecked=0, Total=2162 [2022-03-03 19:36:21,823 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 184 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:36:21,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 775 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 707 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 19:36:21,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2901 states. [2022-03-03 19:36:21,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2901 to 1951. [2022-03-03 19:36:21,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1951 states, 1950 states have (on average 2.263076923076923) internal successors, (4413), 1950 states have internal predecessors, (4413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:36:21,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1951 states to 1951 states and 4413 transitions. [2022-03-03 19:36:21,849 INFO L78 Accepts]: Start accepts. Automaton has 1951 states and 4413 transitions. Word has length 34 [2022-03-03 19:36:21,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:36:21,849 INFO L470 AbstractCegarLoop]: Abstraction has 1951 states and 4413 transitions. [2022-03-03 19:36:21,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.5517241379310347) internal successors, (74), 28 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:36:21,849 INFO L276 IsEmpty]: Start isEmpty. Operand 1951 states and 4413 transitions. [2022-03-03 19:36:21,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-03-03 19:36:21,851 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:36:21,851 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:36:21,868 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2022-03-03 19:36:22,067 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,SelfDestructingSolverStorable47 [2022-03-03 19:36:22,068 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:36:22,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:36:22,068 INFO L85 PathProgramCache]: Analyzing trace with hash -954800038, now seen corresponding path program 43 times [2022-03-03 19:36:22,068 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:36:22,068 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784050285] [2022-03-03 19:36:22,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:36:22,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:36:22,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:36:22,287 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:36:22,287 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:36:22,287 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784050285] [2022-03-03 19:36:22,287 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784050285] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:36:22,287 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602736173] [2022-03-03 19:36:22,287 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:36:22,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:36:22,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:36:22,289 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:36:22,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-03-03 19:36:22,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:36:22,311 WARN L261 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 49 conjunts are in the unsatisfiable core [2022-03-03 19:36:22,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:36:22,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:22,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:22,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:22,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:22,913 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:22,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:22,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:22,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:22,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:22,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:22,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:22,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:22,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:22,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:22,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:22,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:22,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:22,920 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:22,920 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:22,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:22,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:22,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:22,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:22,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:22,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:22,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:22,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:22,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:22,926 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:22,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:22,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:22,928 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:22,928 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 15 disjoint index pairs (out of 55 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 39 [2022-03-03 19:36:22,947 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 2 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:36:22,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:36:23,855 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-03-03 19:36:23,856 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 112 treesize of output 394 [2022-03-03 19:36:24,773 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 3 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:36:24,774 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602736173] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:36:24,774 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:36:24,774 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 37 [2022-03-03 19:36:24,774 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562214957] [2022-03-03 19:36:24,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:36:24,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-03-03 19:36:24,774 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:36:24,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-03-03 19:36:24,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=1184, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 19:36:24,775 INFO L87 Difference]: Start difference. First operand 1951 states and 4413 transitions. Second operand has 38 states, 38 states have (on average 2.3421052631578947) internal successors, (89), 37 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:36:26,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:36:26,195 INFO L93 Difference]: Finished difference Result 4136 states and 9235 transitions. [2022-03-03 19:36:26,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-03-03 19:36:26,195 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.3421052631578947) internal successors, (89), 37 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-03-03 19:36:26,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:36:26,200 INFO L225 Difference]: With dead ends: 4136 [2022-03-03 19:36:26,200 INFO L226 Difference]: Without dead ends: 4001 [2022-03-03 19:36:26,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1574 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=803, Invalid=4309, Unknown=0, NotChecked=0, Total=5112 [2022-03-03 19:36:26,201 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 325 mSDsluCounter, 792 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 141 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 19:36:26,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 727 Invalid, 794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 543 Invalid, 0 Unknown, 141 Unchecked, 0.4s Time] [2022-03-03 19:36:26,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4001 states. [2022-03-03 19:36:26,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4001 to 1878. [2022-03-03 19:36:26,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1878 states, 1877 states have (on average 2.240809802876931) internal successors, (4206), 1877 states have internal predecessors, (4206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:36:26,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1878 states to 1878 states and 4206 transitions. [2022-03-03 19:36:26,231 INFO L78 Accepts]: Start accepts. Automaton has 1878 states and 4206 transitions. Word has length 35 [2022-03-03 19:36:26,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:36:26,231 INFO L470 AbstractCegarLoop]: Abstraction has 1878 states and 4206 transitions. [2022-03-03 19:36:26,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.3421052631578947) internal successors, (89), 37 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:36:26,231 INFO L276 IsEmpty]: Start isEmpty. Operand 1878 states and 4206 transitions. [2022-03-03 19:36:26,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-03-03 19:36:26,233 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:36:26,233 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:36:26,249 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2022-03-03 19:36:26,448 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,SelfDestructingSolverStorable48 [2022-03-03 19:36:26,449 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:36:26,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:36:26,449 INFO L85 PathProgramCache]: Analyzing trace with hash 127332090, now seen corresponding path program 44 times [2022-03-03 19:36:26,449 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:36:26,449 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224726467] [2022-03-03 19:36:26,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:36:26,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:36:26,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:36:26,702 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:36:26,702 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:36:26,702 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224726467] [2022-03-03 19:36:26,702 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224726467] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:36:26,702 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420985334] [2022-03-03 19:36:26,703 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:36:26,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:36:26,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:36:26,704 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:36:26,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-03-03 19:36:26,728 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:36:26,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:36:26,728 WARN L261 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 49 conjunts are in the unsatisfiable core [2022-03-03 19:36:26,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:36:27,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:27,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:27,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:27,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:27,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:27,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:27,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:27,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:27,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:27,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:27,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:27,236 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:27,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:27,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:27,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:27,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:27,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:27,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:27,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:27,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:27,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:27,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:27,240 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:27,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:27,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:27,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:27,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:27,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:27,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:27,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:27,243 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:27,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:27,244 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:27,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:27,244 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:27,245 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 15 disjoint index pairs (out of 55 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 39 [2022-03-03 19:36:27,256 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:36:27,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:36:27,928 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-03-03 19:36:27,928 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 112 treesize of output 394 [2022-03-03 19:36:28,847 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 3 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:36:28,847 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420985334] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:36:28,847 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:36:28,847 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 37 [2022-03-03 19:36:28,848 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975155116] [2022-03-03 19:36:28,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:36:28,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-03-03 19:36:28,848 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:36:28,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-03-03 19:36:28,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=1179, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 19:36:28,848 INFO L87 Difference]: Start difference. First operand 1878 states and 4206 transitions. Second operand has 38 states, 38 states have (on average 2.3421052631578947) internal successors, (89), 37 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:36:30,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:36:30,152 INFO L93 Difference]: Finished difference Result 3758 states and 8289 transitions. [2022-03-03 19:36:30,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-03 19:36:30,153 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.3421052631578947) internal successors, (89), 37 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-03-03 19:36:30,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:36:30,158 INFO L225 Difference]: With dead ends: 3758 [2022-03-03 19:36:30,159 INFO L226 Difference]: Without dead ends: 3705 [2022-03-03 19:36:30,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 46 SyntacticMatches, 3 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1367 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=830, Invalid=3862, Unknown=0, NotChecked=0, Total=4692 [2022-03-03 19:36:30,159 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 236 mSDsluCounter, 1007 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 994 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 323 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 19:36:30,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 994 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 617 Invalid, 0 Unknown, 323 Unchecked, 0.4s Time] [2022-03-03 19:36:30,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3705 states. [2022-03-03 19:36:30,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3705 to 2116. [2022-03-03 19:36:30,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2116 states, 2115 states have (on average 2.2382978723404254) internal successors, (4734), 2115 states have internal predecessors, (4734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:36:30,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2116 states to 2116 states and 4734 transitions. [2022-03-03 19:36:30,188 INFO L78 Accepts]: Start accepts. Automaton has 2116 states and 4734 transitions. Word has length 35 [2022-03-03 19:36:30,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:36:30,188 INFO L470 AbstractCegarLoop]: Abstraction has 2116 states and 4734 transitions. [2022-03-03 19:36:30,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.3421052631578947) internal successors, (89), 37 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:36:30,188 INFO L276 IsEmpty]: Start isEmpty. Operand 2116 states and 4734 transitions. [2022-03-03 19:36:30,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-03-03 19:36:30,190 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:36:30,190 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:36:30,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-03-03 19:36:30,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:36:30,400 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:36:30,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:36:30,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1662856346, now seen corresponding path program 45 times [2022-03-03 19:36:30,401 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:36:30,401 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828691534] [2022-03-03 19:36:30,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:36:30,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:36:30,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:36:30,650 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 19:36:30,650 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:36:30,650 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828691534] [2022-03-03 19:36:30,650 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828691534] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:36:30,650 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334801616] [2022-03-03 19:36:30,650 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:36:30,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:36:30,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:36:30,651 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:36:30,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-03-03 19:36:30,687 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-03-03 19:36:30,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:36:30,687 WARN L261 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 49 conjunts are in the unsatisfiable core [2022-03-03 19:36:30,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:36:31,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:31,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:31,327 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:31,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:31,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:31,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:31,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:31,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:31,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:31,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:31,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:31,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:31,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:31,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:31,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:31,332 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:31,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:31,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:31,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:31,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:31,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:31,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:31,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:31,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:31,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:31,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:31,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:31,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:31,337 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:31,337 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:31,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:31,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:31,338 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:31,339 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 15 disjoint index pairs (out of 55 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 39 [2022-03-03 19:36:31,351 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 4 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:36:31,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:36:32,158 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-03-03 19:36:32,159 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 112 treesize of output 394 [2022-03-03 19:36:32,892 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 3 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:36:32,893 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334801616] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:36:32,893 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:36:32,893 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 15] total 36 [2022-03-03 19:36:32,893 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395155221] [2022-03-03 19:36:32,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:36:32,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-03-03 19:36:32,893 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:36:32,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-03-03 19:36:32,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=1087, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 19:36:32,894 INFO L87 Difference]: Start difference. First operand 2116 states and 4734 transitions. Second operand has 37 states, 37 states have (on average 2.4054054054054053) internal successors, (89), 36 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:36:34,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:36:34,163 INFO L93 Difference]: Finished difference Result 4790 states and 10454 transitions. [2022-03-03 19:36:34,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-03-03 19:36:34,163 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.4054054054054053) internal successors, (89), 36 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-03-03 19:36:34,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:36:34,168 INFO L225 Difference]: With dead ends: 4790 [2022-03-03 19:36:34,168 INFO L226 Difference]: Without dead ends: 4209 [2022-03-03 19:36:34,169 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 47 SyntacticMatches, 3 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1290 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=670, Invalid=3620, Unknown=0, NotChecked=0, Total=4290 [2022-03-03 19:36:34,169 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 471 mSDsluCounter, 1851 mSDsCounter, 0 mSdLazyCounter, 1164 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 1288 SdHoareTripleChecker+Invalid, 1415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 120 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 19:36:34,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [471 Valid, 1288 Invalid, 1415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1164 Invalid, 0 Unknown, 120 Unchecked, 0.5s Time] [2022-03-03 19:36:34,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4209 states. [2022-03-03 19:36:34,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4209 to 2195. [2022-03-03 19:36:34,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2195 states, 2194 states have (on average 2.2520510483135827) internal successors, (4941), 2194 states have internal predecessors, (4941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:36:34,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2195 states to 2195 states and 4941 transitions. [2022-03-03 19:36:34,199 INFO L78 Accepts]: Start accepts. Automaton has 2195 states and 4941 transitions. Word has length 35 [2022-03-03 19:36:34,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:36:34,199 INFO L470 AbstractCegarLoop]: Abstraction has 2195 states and 4941 transitions. [2022-03-03 19:36:34,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.4054054054054053) internal successors, (89), 36 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:36:34,200 INFO L276 IsEmpty]: Start isEmpty. Operand 2195 states and 4941 transitions. [2022-03-03 19:36:34,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-03-03 19:36:34,201 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:36:34,201 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:36:34,217 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2022-03-03 19:36:34,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:36:34,414 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:36:34,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:36:34,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1623360970, now seen corresponding path program 46 times [2022-03-03 19:36:34,415 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:36:34,415 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020890872] [2022-03-03 19:36:34,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:36:34,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:36:34,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:36:34,672 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:36:34,672 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:36:34,672 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020890872] [2022-03-03 19:36:34,672 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020890872] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:36:34,672 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137669537] [2022-03-03 19:36:34,672 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:36:34,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:36:34,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:36:34,673 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:36:34,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-03-03 19:36:34,695 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:36:34,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:36:34,695 WARN L261 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 49 conjunts are in the unsatisfiable core [2022-03-03 19:36:34,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:36:35,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:35,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:35,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:35,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:35,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:35,131 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:35,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:35,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:35,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:35,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:35,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:35,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:35,134 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:35,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:35,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:35,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:35,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:35,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:35,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:35,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:35,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:35,138 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:35,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:35,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:35,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:35,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:35,140 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:35,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:35,143 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:35,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:35,148 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 15 disjoint index pairs (out of 55 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 39 [2022-03-03 19:36:35,170 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:36:35,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:36:36,080 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-03-03 19:36:36,081 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 112 treesize of output 394 [2022-03-03 19:36:37,192 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 3 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:36:37,192 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137669537] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:36:37,192 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:36:37,192 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 38 [2022-03-03 19:36:37,192 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387811176] [2022-03-03 19:36:37,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:36:37,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-03-03 19:36:37,193 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:36:37,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-03-03 19:36:37,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=1246, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 19:36:37,193 INFO L87 Difference]: Start difference. First operand 2195 states and 4941 transitions. Second operand has 39 states, 39 states have (on average 2.282051282051282) internal successors, (89), 38 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:36:38,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:36:38,457 INFO L93 Difference]: Finished difference Result 4494 states and 10166 transitions. [2022-03-03 19:36:38,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-03-03 19:36:38,458 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.282051282051282) internal successors, (89), 38 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-03-03 19:36:38,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:36:38,463 INFO L225 Difference]: With dead ends: 4494 [2022-03-03 19:36:38,463 INFO L226 Difference]: Without dead ends: 4212 [2022-03-03 19:36:38,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1367 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=798, Invalid=3894, Unknown=0, NotChecked=0, Total=4692 [2022-03-03 19:36:38,465 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 404 mSDsluCounter, 1162 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 958 SdHoareTripleChecker+Invalid, 1106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 373 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 19:36:38,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [404 Valid, 958 Invalid, 1106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 624 Invalid, 0 Unknown, 373 Unchecked, 0.4s Time] [2022-03-03 19:36:38,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4212 states. [2022-03-03 19:36:38,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4212 to 1459. [2022-03-03 19:36:38,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1459 states, 1458 states have (on average 2.174211248285322) internal successors, (3170), 1458 states have internal predecessors, (3170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:36:38,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1459 states to 1459 states and 3170 transitions. [2022-03-03 19:36:38,489 INFO L78 Accepts]: Start accepts. Automaton has 1459 states and 3170 transitions. Word has length 35 [2022-03-03 19:36:38,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:36:38,489 INFO L470 AbstractCegarLoop]: Abstraction has 1459 states and 3170 transitions. [2022-03-03 19:36:38,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.282051282051282) internal successors, (89), 38 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:36:38,489 INFO L276 IsEmpty]: Start isEmpty. Operand 1459 states and 3170 transitions. [2022-03-03 19:36:38,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-03-03 19:36:38,491 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:36:38,491 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:36:38,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-03-03 19:36:38,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:36:38,696 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:36:38,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:36:38,696 INFO L85 PathProgramCache]: Analyzing trace with hash 395777034, now seen corresponding path program 47 times [2022-03-03 19:36:38,696 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:36:38,696 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154865567] [2022-03-03 19:36:38,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:36:38,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:36:38,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:36:38,922 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 19:36:38,922 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:36:38,922 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154865567] [2022-03-03 19:36:38,922 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154865567] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:36:38,922 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003512878] [2022-03-03 19:36:38,922 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:36:38,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:36:38,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:36:38,936 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:36:38,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-03-03 19:36:38,960 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-03-03 19:36:38,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:36:38,960 WARN L261 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 49 conjunts are in the unsatisfiable core [2022-03-03 19:36:38,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:36:39,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:39,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:39,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:39,609 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:39,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:39,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:39,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:39,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:39,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:39,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:39,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:39,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:39,613 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:39,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:39,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:39,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:39,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:39,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:39,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:39,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:39,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:39,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:39,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:39,618 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:39,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:39,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:39,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:39,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:39,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:39,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:39,621 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:39,622 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:39,624 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 15 disjoint index pairs (out of 55 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 39 [2022-03-03 19:36:39,639 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 4 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:36:39,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:36:40,506 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-03-03 19:36:40,506 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 112 treesize of output 394 [2022-03-03 19:36:41,404 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 6 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:36:41,404 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003512878] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:36:41,405 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:36:41,405 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 15] total 36 [2022-03-03 19:36:41,405 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617643270] [2022-03-03 19:36:41,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:36:41,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-03-03 19:36:41,406 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:36:41,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-03-03 19:36:41,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=1082, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 19:36:41,406 INFO L87 Difference]: Start difference. First operand 1459 states and 3170 transitions. Second operand has 37 states, 37 states have (on average 2.4054054054054053) internal successors, (89), 36 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:36:42,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:36:42,438 INFO L93 Difference]: Finished difference Result 2688 states and 5687 transitions. [2022-03-03 19:36:42,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-03 19:36:42,438 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.4054054054054053) internal successors, (89), 36 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-03-03 19:36:42,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:36:42,441 INFO L225 Difference]: With dead ends: 2688 [2022-03-03 19:36:42,441 INFO L226 Difference]: Without dead ends: 2396 [2022-03-03 19:36:42,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 45 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 845 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=493, Invalid=2369, Unknown=0, NotChecked=0, Total=2862 [2022-03-03 19:36:42,442 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 379 mSDsluCounter, 1438 mSDsCounter, 0 mSdLazyCounter, 994 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 1078 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 19:36:42,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [379 Valid, 1078 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 994 Invalid, 0 Unknown, 25 Unchecked, 0.5s Time] [2022-03-03 19:36:42,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2396 states. [2022-03-03 19:36:42,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2396 to 1654. [2022-03-03 19:36:42,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1654 states, 1653 states have (on average 2.173018753781004) internal successors, (3592), 1653 states have internal predecessors, (3592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:36:42,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1654 states to 1654 states and 3592 transitions. [2022-03-03 19:36:42,464 INFO L78 Accepts]: Start accepts. Automaton has 1654 states and 3592 transitions. Word has length 35 [2022-03-03 19:36:42,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:36:42,465 INFO L470 AbstractCegarLoop]: Abstraction has 1654 states and 3592 transitions. [2022-03-03 19:36:42,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.4054054054054053) internal successors, (89), 36 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:36:42,465 INFO L276 IsEmpty]: Start isEmpty. Operand 1654 states and 3592 transitions. [2022-03-03 19:36:42,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-03-03 19:36:42,467 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:36:42,467 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:36:42,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-03-03 19:36:42,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2022-03-03 19:36:42,685 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:36:42,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:36:42,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1974496454, now seen corresponding path program 48 times [2022-03-03 19:36:42,685 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:36:42,685 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666743035] [2022-03-03 19:36:42,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:36:42,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:36:42,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:36:42,909 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:36:42,909 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:36:42,909 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666743035] [2022-03-03 19:36:42,909 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666743035] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:36:42,909 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896614648] [2022-03-03 19:36:42,909 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:36:42,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:36:42,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:36:42,911 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:36:42,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-03-03 19:36:42,945 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-03-03 19:36:42,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:36:42,946 WARN L261 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 51 conjunts are in the unsatisfiable core [2022-03-03 19:36:42,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:36:43,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:43,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:43,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:43,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:43,594 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:43,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:43,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:43,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:43,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:43,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:43,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:43,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:43,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:43,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:43,599 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:43,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:43,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:43,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:43,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:43,602 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:43,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:43,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:43,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:43,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:43,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:43,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:43,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:43,607 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:43,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:43,608 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:43,608 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 15 disjoint index pairs (out of 55 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 39 [2022-03-03 19:36:43,628 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:36:43,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:36:44,428 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-03-03 19:36:44,428 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 114 treesize of output 396 [2022-03-03 19:36:45,452 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 6 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:36:45,453 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896614648] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:36:45,453 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:36:45,453 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 15] total 36 [2022-03-03 19:36:45,453 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807953666] [2022-03-03 19:36:45,453 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:36:45,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-03-03 19:36:45,453 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:36:45,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-03-03 19:36:45,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=1099, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 19:36:45,454 INFO L87 Difference]: Start difference. First operand 1654 states and 3592 transitions. Second operand has 37 states, 37 states have (on average 2.4054054054054053) internal successors, (89), 36 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:36:46,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:36:46,477 INFO L93 Difference]: Finished difference Result 2853 states and 6115 transitions. [2022-03-03 19:36:46,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-03 19:36:46,478 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.4054054054054053) internal successors, (89), 36 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-03-03 19:36:46,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:36:46,481 INFO L225 Difference]: With dead ends: 2853 [2022-03-03 19:36:46,481 INFO L226 Difference]: Without dead ends: 2769 [2022-03-03 19:36:46,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 45 SyntacticMatches, 3 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 935 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=525, Invalid=2781, Unknown=0, NotChecked=0, Total=3306 [2022-03-03 19:36:46,481 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 218 mSDsluCounter, 1040 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 131 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 19:36:46,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 914 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 731 Invalid, 0 Unknown, 131 Unchecked, 0.4s Time] [2022-03-03 19:36:46,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2769 states. [2022-03-03 19:36:46,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2769 to 1618. [2022-03-03 19:36:46,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1618 states, 1617 states have (on average 2.168212739641311) internal successors, (3506), 1617 states have internal predecessors, (3506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:36:46,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1618 states to 1618 states and 3506 transitions. [2022-03-03 19:36:46,501 INFO L78 Accepts]: Start accepts. Automaton has 1618 states and 3506 transitions. Word has length 35 [2022-03-03 19:36:46,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:36:46,501 INFO L470 AbstractCegarLoop]: Abstraction has 1618 states and 3506 transitions. [2022-03-03 19:36:46,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.4054054054054053) internal successors, (89), 36 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:36:46,501 INFO L276 IsEmpty]: Start isEmpty. Operand 1618 states and 3506 transitions. [2022-03-03 19:36:46,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-03-03 19:36:46,503 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:36:46,503 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:36:46,518 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2022-03-03 19:36:46,716 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,SelfDestructingSolverStorable53 [2022-03-03 19:36:46,717 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:36:46,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:36:46,717 INFO L85 PathProgramCache]: Analyzing trace with hash 356281658, now seen corresponding path program 49 times [2022-03-03 19:36:46,717 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:36:46,717 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091708970] [2022-03-03 19:36:46,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:36:46,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:36:46,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:36:47,018 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:36:47,019 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:36:47,019 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091708970] [2022-03-03 19:36:47,019 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091708970] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:36:47,019 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843906144] [2022-03-03 19:36:47,019 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:36:47,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:36:47,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:36:47,020 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:36:47,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-03-03 19:36:47,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:36:47,046 WARN L261 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 49 conjunts are in the unsatisfiable core [2022-03-03 19:36:47,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:36:47,628 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:47,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:47,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:47,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:47,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:47,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:47,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:47,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:47,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:47,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:47,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:47,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:47,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:47,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:47,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:47,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:47,637 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:47,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:47,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:47,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:47,638 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:47,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:47,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:47,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:47,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:47,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:47,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:47,641 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:47,642 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:47,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:47,643 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 15 disjoint index pairs (out of 55 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 39 [2022-03-03 19:36:47,657 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:36:47,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:36:48,332 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-03-03 19:36:48,332 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 112 treesize of output 394 [2022-03-03 19:36:49,359 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 6 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:36:49,359 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843906144] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:36:49,359 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:36:49,359 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 38 [2022-03-03 19:36:49,359 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698500076] [2022-03-03 19:36:49,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:36:49,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-03-03 19:36:49,360 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:36:49,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-03-03 19:36:49,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=1243, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 19:36:49,360 INFO L87 Difference]: Start difference. First operand 1618 states and 3506 transitions. Second operand has 39 states, 39 states have (on average 2.282051282051282) internal successors, (89), 38 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:36:50,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:36:50,281 INFO L93 Difference]: Finished difference Result 2882 states and 6229 transitions. [2022-03-03 19:36:50,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-03 19:36:50,281 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.282051282051282) internal successors, (89), 38 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-03-03 19:36:50,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:36:50,284 INFO L225 Difference]: With dead ends: 2882 [2022-03-03 19:36:50,284 INFO L226 Difference]: Without dead ends: 2783 [2022-03-03 19:36:50,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=551, Invalid=2871, Unknown=0, NotChecked=0, Total=3422 [2022-03-03 19:36:50,285 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 218 mSDsluCounter, 927 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 840 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 204 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:36:50,285 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 840 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 595 Invalid, 0 Unknown, 204 Unchecked, 0.3s Time] [2022-03-03 19:36:50,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2783 states. [2022-03-03 19:36:50,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2783 to 1723. [2022-03-03 19:36:50,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1723 states, 1722 states have (on average 2.1759581881533103) internal successors, (3747), 1722 states have internal predecessors, (3747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:36:50,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1723 states to 1723 states and 3747 transitions. [2022-03-03 19:36:50,304 INFO L78 Accepts]: Start accepts. Automaton has 1723 states and 3747 transitions. Word has length 35 [2022-03-03 19:36:50,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:36:50,304 INFO L470 AbstractCegarLoop]: Abstraction has 1723 states and 3747 transitions. [2022-03-03 19:36:50,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.282051282051282) internal successors, (89), 38 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:36:50,304 INFO L276 IsEmpty]: Start isEmpty. Operand 1723 states and 3747 transitions. [2022-03-03 19:36:50,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-03-03 19:36:50,306 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:36:50,306 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:36:50,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2022-03-03 19:36:50,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:36:50,523 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:36:50,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:36:50,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1096114186, now seen corresponding path program 50 times [2022-03-03 19:36:50,524 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:36:50,524 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049901280] [2022-03-03 19:36:50,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:36:50,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:36:50,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:36:50,797 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:36:50,798 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:36:50,798 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049901280] [2022-03-03 19:36:50,798 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049901280] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:36:50,798 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530282063] [2022-03-03 19:36:50,798 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:36:50,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:36:50,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:36:50,799 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:36:50,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-03-03 19:36:50,822 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:36:50,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:36:50,822 WARN L261 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 49 conjunts are in the unsatisfiable core [2022-03-03 19:36:50,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:36:51,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:51,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:51,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:51,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:51,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:51,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:51,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:51,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:51,407 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:51,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:51,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:51,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:51,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:51,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:51,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:51,411 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:51,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:51,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:51,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:51,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:51,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:51,414 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:51,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:51,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:51,416 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:51,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:51,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:51,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:51,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:51,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:51,419 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:51,420 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 15 disjoint index pairs (out of 55 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 39 [2022-03-03 19:36:51,439 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:36:51,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:36:52,377 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-03-03 19:36:52,377 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 112 treesize of output 394 [2022-03-03 19:36:53,202 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:36:53,202 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530282063] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:36:53,202 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:36:53,202 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 38 [2022-03-03 19:36:53,202 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076653354] [2022-03-03 19:36:53,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:36:53,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-03-03 19:36:53,203 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:36:53,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-03-03 19:36:53,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=1241, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 19:36:53,203 INFO L87 Difference]: Start difference. First operand 1723 states and 3747 transitions. Second operand has 39 states, 39 states have (on average 2.282051282051282) internal successors, (89), 38 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:36:54,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:36:54,196 INFO L93 Difference]: Finished difference Result 2890 states and 6235 transitions. [2022-03-03 19:36:54,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-03 19:36:54,197 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.282051282051282) internal successors, (89), 38 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-03-03 19:36:54,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:36:54,200 INFO L225 Difference]: With dead ends: 2890 [2022-03-03 19:36:54,200 INFO L226 Difference]: Without dead ends: 2860 [2022-03-03 19:36:54,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1205 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=658, Invalid=3764, Unknown=0, NotChecked=0, Total=4422 [2022-03-03 19:36:54,209 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 188 mSDsluCounter, 1203 mSDsCounter, 0 mSdLazyCounter, 839 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 1160 SdHoareTripleChecker+Invalid, 1108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 221 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 19:36:54,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [188 Valid, 1160 Invalid, 1108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 839 Invalid, 0 Unknown, 221 Unchecked, 0.4s Time] [2022-03-03 19:36:54,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2860 states. [2022-03-03 19:36:54,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2860 to 1747. [2022-03-03 19:36:54,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1747 states, 1746 states have (on average 2.1781214203894614) internal successors, (3803), 1746 states have internal predecessors, (3803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:36:54,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1747 states to 1747 states and 3803 transitions. [2022-03-03 19:36:54,230 INFO L78 Accepts]: Start accepts. Automaton has 1747 states and 3803 transitions. Word has length 35 [2022-03-03 19:36:54,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:36:54,230 INFO L470 AbstractCegarLoop]: Abstraction has 1747 states and 3803 transitions. [2022-03-03 19:36:54,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.282051282051282) internal successors, (89), 38 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:36:54,230 INFO L276 IsEmpty]: Start isEmpty. Operand 1747 states and 3803 transitions. [2022-03-03 19:36:54,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-03-03 19:36:54,231 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:36:54,232 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:36:54,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2022-03-03 19:36:54,433 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,SelfDestructingSolverStorable55 [2022-03-03 19:36:54,433 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:36:54,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:36:54,434 INFO L85 PathProgramCache]: Analyzing trace with hash 2135634746, now seen corresponding path program 51 times [2022-03-03 19:36:54,434 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:36:54,434 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704468764] [2022-03-03 19:36:54,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:36:54,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:36:54,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:36:54,683 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:36:54,684 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:36:54,684 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704468764] [2022-03-03 19:36:54,684 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704468764] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:36:54,684 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654928019] [2022-03-03 19:36:54,684 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:36:54,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:36:54,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:36:54,700 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:36:54,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-03-03 19:36:54,741 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-03-03 19:36:54,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:36:54,742 WARN L261 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 49 conjunts are in the unsatisfiable core [2022-03-03 19:36:54,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:36:55,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:55,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:55,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:55,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:55,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:55,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:55,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:55,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:55,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:55,195 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:55,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:55,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:55,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:55,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:55,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:55,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:55,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:55,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:55,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:55,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:55,199 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:55,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:55,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:55,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:55,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:55,201 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:55,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:55,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:55,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:55,203 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:55,203 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 15 disjoint index pairs (out of 45 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 39 [2022-03-03 19:36:55,215 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:36:55,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:36:55,910 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-03-03 19:36:55,910 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 112 treesize of output 394 [2022-03-03 19:36:56,968 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 3 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:36:56,968 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654928019] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:36:56,968 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:36:56,968 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 15] total 35 [2022-03-03 19:36:56,968 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886932457] [2022-03-03 19:36:56,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:36:56,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-03-03 19:36:56,969 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:36:56,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-03-03 19:36:56,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=1026, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 19:36:56,969 INFO L87 Difference]: Start difference. First operand 1747 states and 3803 transitions. Second operand has 36 states, 36 states have (on average 2.388888888888889) internal successors, (86), 35 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:36:58,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:36:58,588 INFO L93 Difference]: Finished difference Result 3655 states and 7698 transitions. [2022-03-03 19:36:58,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-03 19:36:58,588 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.388888888888889) internal successors, (86), 35 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-03-03 19:36:58,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:36:58,593 INFO L225 Difference]: With dead ends: 3655 [2022-03-03 19:36:58,593 INFO L226 Difference]: Without dead ends: 3221 [2022-03-03 19:36:58,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1026 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=572, Invalid=3210, Unknown=0, NotChecked=0, Total=3782 [2022-03-03 19:36:58,594 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 491 mSDsluCounter, 2144 mSDsCounter, 0 mSdLazyCounter, 1410 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 1570 SdHoareTripleChecker+Invalid, 1591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 19:36:58,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [491 Valid, 1570 Invalid, 1591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1410 Invalid, 0 Unknown, 64 Unchecked, 0.7s Time] [2022-03-03 19:36:58,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3221 states. [2022-03-03 19:36:58,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3221 to 1927. [2022-03-03 19:36:58,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1927 states, 1926 states have (on average 2.1895119418483904) internal successors, (4217), 1926 states have internal predecessors, (4217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:36:58,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1927 states to 1927 states and 4217 transitions. [2022-03-03 19:36:58,621 INFO L78 Accepts]: Start accepts. Automaton has 1927 states and 4217 transitions. Word has length 35 [2022-03-03 19:36:58,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:36:58,621 INFO L470 AbstractCegarLoop]: Abstraction has 1927 states and 4217 transitions. [2022-03-03 19:36:58,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.388888888888889) internal successors, (86), 35 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:36:58,621 INFO L276 IsEmpty]: Start isEmpty. Operand 1927 states and 4217 transitions. [2022-03-03 19:36:58,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-03-03 19:36:58,622 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:36:58,622 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:36:58,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2022-03-03 19:36:58,835 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,SelfDestructingSolverStorable56 [2022-03-03 19:36:58,842 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:36:58,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:36:58,842 INFO L85 PathProgramCache]: Analyzing trace with hash 2096139370, now seen corresponding path program 52 times [2022-03-03 19:36:58,842 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:36:58,843 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418040067] [2022-03-03 19:36:58,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:36:58,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:36:58,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:36:59,121 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:36:59,122 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:36:59,122 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418040067] [2022-03-03 19:36:59,122 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418040067] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:36:59,122 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196450703] [2022-03-03 19:36:59,122 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:36:59,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:36:59,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:36:59,124 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:36:59,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-03-03 19:36:59,146 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:36:59,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:36:59,147 WARN L261 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 49 conjunts are in the unsatisfiable core [2022-03-03 19:36:59,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:36:59,700 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:59,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:59,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:59,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:59,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:59,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:59,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:59,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:59,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:59,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:59,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:59,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:59,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:59,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:59,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:59,707 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:59,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:59,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:59,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:59,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:59,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:59,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:59,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:59,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:59,711 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:59,711 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:36:59,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:36:59,713 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 15 disjoint index pairs (out of 45 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 39 [2022-03-03 19:36:59,734 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:36:59,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:37:00,644 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-03-03 19:37:00,644 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 112 treesize of output 394 [2022-03-03 19:37:01,308 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 3 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:37:01,308 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196450703] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:37:01,308 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:37:01,308 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 37 [2022-03-03 19:37:01,308 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364266254] [2022-03-03 19:37:01,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:37:01,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-03-03 19:37:01,308 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:37:01,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-03-03 19:37:01,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=1175, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 19:37:01,309 INFO L87 Difference]: Start difference. First operand 1927 states and 4217 transitions. Second operand has 38 states, 38 states have (on average 2.263157894736842) internal successors, (86), 37 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:37:02,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:37:02,896 INFO L93 Difference]: Finished difference Result 4268 states and 9267 transitions. [2022-03-03 19:37:02,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-03-03 19:37:02,896 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.263157894736842) internal successors, (86), 37 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-03-03 19:37:02,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:37:02,902 INFO L225 Difference]: With dead ends: 4268 [2022-03-03 19:37:02,902 INFO L226 Difference]: Without dead ends: 3932 [2022-03-03 19:37:02,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1548 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=930, Invalid=4472, Unknown=0, NotChecked=0, Total=5402 [2022-03-03 19:37:02,903 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 348 mSDsluCounter, 1805 mSDsCounter, 0 mSdLazyCounter, 1042 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 1333 SdHoareTripleChecker+Invalid, 1595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 469 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 19:37:02,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [348 Valid, 1333 Invalid, 1595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1042 Invalid, 0 Unknown, 469 Unchecked, 0.5s Time] [2022-03-03 19:37:02,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3932 states. [2022-03-03 19:37:02,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3932 to 1912. [2022-03-03 19:37:02,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1912 states, 1911 states have (on average 2.1805337519623236) internal successors, (4167), 1911 states have internal predecessors, (4167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:37:02,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1912 states to 1912 states and 4167 transitions. [2022-03-03 19:37:02,934 INFO L78 Accepts]: Start accepts. Automaton has 1912 states and 4167 transitions. Word has length 35 [2022-03-03 19:37:02,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:37:02,934 INFO L470 AbstractCegarLoop]: Abstraction has 1912 states and 4167 transitions. [2022-03-03 19:37:02,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.263157894736842) internal successors, (86), 37 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:37:02,934 INFO L276 IsEmpty]: Start isEmpty. Operand 1912 states and 4167 transitions. [2022-03-03 19:37:02,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-03-03 19:37:02,935 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:37:02,935 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:37:02,952 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2022-03-03 19:37:03,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:37:03,144 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:37:03,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:37:03,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1458995398, now seen corresponding path program 53 times [2022-03-03 19:37:03,144 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:37:03,145 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909278432] [2022-03-03 19:37:03,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:37:03,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:37:03,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:37:03,407 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:37:03,407 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:37:03,407 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909278432] [2022-03-03 19:37:03,407 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909278432] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:37:03,407 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722161138] [2022-03-03 19:37:03,407 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:37:03,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:37:03,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:37:03,408 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:37:03,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-03-03 19:37:03,432 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-03-03 19:37:03,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:37:03,435 WARN L261 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 49 conjunts are in the unsatisfiable core [2022-03-03 19:37:03,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:37:04,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:04,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:04,061 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:04,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:04,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:04,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:04,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:04,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:04,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:04,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:04,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:04,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:04,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:04,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:04,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:04,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:04,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:04,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:04,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:04,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:04,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:04,072 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:04,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:04,073 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:04,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:04,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:04,074 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:04,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:04,076 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 15 disjoint index pairs (out of 45 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 39 [2022-03-03 19:37:04,119 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:37:04,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:37:04,914 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-03-03 19:37:04,914 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 112 treesize of output 394 [2022-03-03 19:37:05,628 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 6 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:37:05,629 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722161138] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:37:05,629 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:37:05,629 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 37 [2022-03-03 19:37:05,629 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731143758] [2022-03-03 19:37:05,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:37:05,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-03-03 19:37:05,629 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:37:05,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-03-03 19:37:05,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=1174, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 19:37:05,629 INFO L87 Difference]: Start difference. First operand 1912 states and 4167 transitions. Second operand has 38 states, 38 states have (on average 2.263157894736842) internal successors, (86), 37 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:37:06,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:37:06,818 INFO L93 Difference]: Finished difference Result 3252 states and 7031 transitions. [2022-03-03 19:37:06,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-03 19:37:06,819 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.263157894736842) internal successors, (86), 37 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-03-03 19:37:06,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:37:06,823 INFO L225 Difference]: With dead ends: 3252 [2022-03-03 19:37:06,823 INFO L226 Difference]: Without dead ends: 3222 [2022-03-03 19:37:06,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 996 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=613, Invalid=3293, Unknown=0, NotChecked=0, Total=3906 [2022-03-03 19:37:06,823 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 242 mSDsluCounter, 1114 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 1073 SdHoareTripleChecker+Invalid, 1052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 359 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 19:37:06,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 1073 Invalid, 1052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 625 Invalid, 0 Unknown, 359 Unchecked, 0.4s Time] [2022-03-03 19:37:06,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3222 states. [2022-03-03 19:37:06,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3222 to 2050. [2022-03-03 19:37:06,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2050 states, 2049 states have (on average 2.186920448999512) internal successors, (4481), 2049 states have internal predecessors, (4481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:37:06,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2050 states to 2050 states and 4481 transitions. [2022-03-03 19:37:06,855 INFO L78 Accepts]: Start accepts. Automaton has 2050 states and 4481 transitions. Word has length 35 [2022-03-03 19:37:06,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:37:06,855 INFO L470 AbstractCegarLoop]: Abstraction has 2050 states and 4481 transitions. [2022-03-03 19:37:06,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.263157894736842) internal successors, (86), 37 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:37:06,855 INFO L276 IsEmpty]: Start isEmpty. Operand 2050 states and 4481 transitions. [2022-03-03 19:37:06,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-03-03 19:37:06,857 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:37:06,857 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:37:06,874 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2022-03-03 19:37:07,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:37:07,073 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:37:07,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:37:07,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1282496970, now seen corresponding path program 54 times [2022-03-03 19:37:07,074 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:37:07,074 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396618956] [2022-03-03 19:37:07,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:37:07,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:37:07,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:37:07,379 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:37:07,379 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:37:07,379 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396618956] [2022-03-03 19:37:07,379 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396618956] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:37:07,379 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716124596] [2022-03-03 19:37:07,379 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:37:07,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:37:07,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:37:07,380 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:37:07,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-03-03 19:37:07,405 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-03-03 19:37:07,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:37:07,406 WARN L261 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 49 conjunts are in the unsatisfiable core [2022-03-03 19:37:07,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:37:08,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:08,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:08,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:08,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:08,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:08,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:08,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:08,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:08,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:08,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:08,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:08,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:08,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:08,011 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:08,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:08,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:08,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:08,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:08,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:08,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:08,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:08,015 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:08,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:08,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:08,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:08,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:08,018 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:08,018 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 15 disjoint index pairs (out of 36 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 39 [2022-03-03 19:37:08,038 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:37:08,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:37:08,885 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-03-03 19:37:08,885 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 112 treesize of output 394 [2022-03-03 19:37:09,791 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 3 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:37:09,791 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716124596] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:37:09,791 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:37:09,791 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 36 [2022-03-03 19:37:09,791 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184520186] [2022-03-03 19:37:09,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:37:09,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-03-03 19:37:09,792 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:37:09,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-03-03 19:37:09,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=1106, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 19:37:09,792 INFO L87 Difference]: Start difference. First operand 2050 states and 4481 transitions. Second operand has 37 states, 37 states have (on average 2.2432432432432434) internal successors, (83), 36 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:37:10,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:37:10,730 INFO L93 Difference]: Finished difference Result 3617 states and 7865 transitions. [2022-03-03 19:37:10,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-03 19:37:10,731 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.2432432432432434) internal successors, (83), 36 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-03-03 19:37:10,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:37:10,735 INFO L225 Difference]: With dead ends: 3617 [2022-03-03 19:37:10,735 INFO L226 Difference]: Without dead ends: 3572 [2022-03-03 19:37:10,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 46 SyntacticMatches, 4 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 978 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=648, Invalid=3258, Unknown=0, NotChecked=0, Total=3906 [2022-03-03 19:37:10,736 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 266 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 323 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:37:10,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [266 Valid, 899 Invalid, 948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 562 Invalid, 0 Unknown, 323 Unchecked, 0.3s Time] [2022-03-03 19:37:10,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3572 states. [2022-03-03 19:37:10,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3572 to 2224. [2022-03-03 19:37:10,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2224 states, 2223 states have (on average 2.1938821412505622) internal successors, (4877), 2223 states have internal predecessors, (4877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:37:10,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2224 states to 2224 states and 4877 transitions. [2022-03-03 19:37:10,765 INFO L78 Accepts]: Start accepts. Automaton has 2224 states and 4877 transitions. Word has length 35 [2022-03-03 19:37:10,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:37:10,765 INFO L470 AbstractCegarLoop]: Abstraction has 2224 states and 4877 transitions. [2022-03-03 19:37:10,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.2432432432432434) internal successors, (83), 36 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:37:10,765 INFO L276 IsEmpty]: Start isEmpty. Operand 2224 states and 4877 transitions. [2022-03-03 19:37:10,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-03-03 19:37:10,767 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:37:10,767 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:37:10,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2022-03-03 19:37:10,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2022-03-03 19:37:10,985 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:37:10,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:37:10,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1332936966, now seen corresponding path program 55 times [2022-03-03 19:37:10,990 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:37:10,990 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85197196] [2022-03-03 19:37:10,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:37:10,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:37:11,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:37:11,206 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:37:11,206 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:37:11,206 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85197196] [2022-03-03 19:37:11,206 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85197196] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:37:11,206 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072420678] [2022-03-03 19:37:11,206 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:37:11,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:37:11,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:37:11,208 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:37:11,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-03-03 19:37:11,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:37:11,243 WARN L261 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 49 conjunts are in the unsatisfiable core [2022-03-03 19:37:11,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:37:11,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:11,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:11,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:11,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:11,848 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:11,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:11,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:11,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:11,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:11,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:11,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:11,852 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:11,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:11,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:11,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:11,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:11,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:11,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:11,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:11,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:11,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:11,858 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:11,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:11,859 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 15 disjoint index pairs (out of 36 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 39 [2022-03-03 19:37:11,879 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:37:11,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:37:12,637 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-03-03 19:37:12,637 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 112 treesize of output 394 [2022-03-03 19:37:13,171 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 3 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:37:13,172 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072420678] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:37:13,172 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:37:13,172 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 36 [2022-03-03 19:37:13,172 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797481653] [2022-03-03 19:37:13,172 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:37:13,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-03-03 19:37:13,172 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:37:13,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-03-03 19:37:13,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=1110, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 19:37:13,173 INFO L87 Difference]: Start difference. First operand 2224 states and 4877 transitions. Second operand has 37 states, 37 states have (on average 2.189189189189189) internal successors, (81), 36 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:37:15,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:37:15,016 INFO L93 Difference]: Finished difference Result 5467 states and 11723 transitions. [2022-03-03 19:37:15,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-03-03 19:37:15,017 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.189189189189189) internal successors, (81), 36 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-03-03 19:37:15,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:37:15,023 INFO L225 Difference]: With dead ends: 5467 [2022-03-03 19:37:15,024 INFO L226 Difference]: Without dead ends: 4948 [2022-03-03 19:37:15,024 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 44 SyntacticMatches, 4 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1619 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=862, Invalid=4838, Unknown=0, NotChecked=0, Total=5700 [2022-03-03 19:37:15,024 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 486 mSDsluCounter, 2265 mSDsCounter, 0 mSdLazyCounter, 1564 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 1617 SdHoareTripleChecker+Invalid, 1800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 110 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 19:37:15,024 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [486 Valid, 1617 Invalid, 1800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1564 Invalid, 0 Unknown, 110 Unchecked, 0.6s Time] [2022-03-03 19:37:15,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4948 states. [2022-03-03 19:37:15,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4948 to 2767. [2022-03-03 19:37:15,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2767 states, 2766 states have (on average 2.2024584237165583) internal successors, (6092), 2766 states have internal predecessors, (6092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:37:15,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2767 states to 2767 states and 6092 transitions. [2022-03-03 19:37:15,106 INFO L78 Accepts]: Start accepts. Automaton has 2767 states and 6092 transitions. Word has length 35 [2022-03-03 19:37:15,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:37:15,106 INFO L470 AbstractCegarLoop]: Abstraction has 2767 states and 6092 transitions. [2022-03-03 19:37:15,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.189189189189189) internal successors, (81), 36 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:37:15,107 INFO L276 IsEmpty]: Start isEmpty. Operand 2767 states and 6092 transitions. [2022-03-03 19:37:15,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-03-03 19:37:15,109 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:37:15,109 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:37:15,144 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2022-03-03 19:37:15,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:37:15,339 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:37:15,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:37:15,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1388779334, now seen corresponding path program 56 times [2022-03-03 19:37:15,339 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:37:15,339 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654114483] [2022-03-03 19:37:15,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:37:15,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:37:15,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:37:15,557 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-03-03 19:37:15,557 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:37:15,557 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654114483] [2022-03-03 19:37:15,558 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654114483] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:37:15,558 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461567708] [2022-03-03 19:37:15,558 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:37:15,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:37:15,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:37:15,559 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:37:15,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-03-03 19:37:15,581 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:37:15,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:37:15,582 WARN L261 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 49 conjunts are in the unsatisfiable core [2022-03-03 19:37:15,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:37:15,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:15,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:15,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:15,991 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:15,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:15,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:15,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:15,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:15,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:15,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:15,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:15,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:15,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:15,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:15,995 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:15,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:15,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:15,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:15,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:16,004 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 15 disjoint index pairs (out of 28 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 39 [2022-03-03 19:37:16,018 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 6 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:37:16,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:37:16,695 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-03-03 19:37:16,696 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 112 treesize of output 394 [2022-03-03 19:37:17,776 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 3 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:37:17,777 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461567708] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:37:17,777 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:37:17,777 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 15] total 32 [2022-03-03 19:37:17,777 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953278706] [2022-03-03 19:37:17,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:37:17,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 19:37:17,777 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:37:17,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 19:37:17,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=862, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 19:37:17,777 INFO L87 Difference]: Start difference. First operand 2767 states and 6092 transitions. Second operand has 33 states, 33 states have (on average 2.272727272727273) internal successors, (75), 32 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:37:19,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:37:19,290 INFO L93 Difference]: Finished difference Result 5618 states and 12121 transitions. [2022-03-03 19:37:19,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-03-03 19:37:19,290 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.272727272727273) internal successors, (75), 32 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-03-03 19:37:19,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:37:19,297 INFO L225 Difference]: With dead ends: 5618 [2022-03-03 19:37:19,297 INFO L226 Difference]: Without dead ends: 5088 [2022-03-03 19:37:19,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 44 SyntacticMatches, 8 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1238 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=796, Invalid=3626, Unknown=0, NotChecked=0, Total=4422 [2022-03-03 19:37:19,297 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 584 mSDsluCounter, 1575 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 1306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 245 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 19:37:19,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [584 Valid, 1197 Invalid, 1306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 949 Invalid, 0 Unknown, 245 Unchecked, 0.5s Time] [2022-03-03 19:37:19,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5088 states. [2022-03-03 19:37:19,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5088 to 2955. [2022-03-03 19:37:19,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2955 states, 2954 states have (on average 2.2109004739336493) internal successors, (6531), 2954 states have internal predecessors, (6531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:37:19,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2955 states to 2955 states and 6531 transitions. [2022-03-03 19:37:19,352 INFO L78 Accepts]: Start accepts. Automaton has 2955 states and 6531 transitions. Word has length 35 [2022-03-03 19:37:19,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:37:19,352 INFO L470 AbstractCegarLoop]: Abstraction has 2955 states and 6531 transitions. [2022-03-03 19:37:19,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.272727272727273) internal successors, (75), 32 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:37:19,353 INFO L276 IsEmpty]: Start isEmpty. Operand 2955 states and 6531 transitions. [2022-03-03 19:37:19,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-03-03 19:37:19,355 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:37:19,355 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:37:19,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2022-03-03 19:37:19,570 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,SelfDestructingSolverStorable61 [2022-03-03 19:37:19,571 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:37:19,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:37:19,571 INFO L85 PathProgramCache]: Analyzing trace with hash -285585158, now seen corresponding path program 57 times [2022-03-03 19:37:19,571 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:37:19,571 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51574591] [2022-03-03 19:37:19,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:37:19,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:37:19,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:37:19,767 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:37:19,767 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:37:19,767 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51574591] [2022-03-03 19:37:19,767 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51574591] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:37:19,767 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947060620] [2022-03-03 19:37:19,767 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:37:19,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:37:19,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:37:19,768 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:37:19,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-03-03 19:37:19,792 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-03-03 19:37:19,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:37:19,792 WARN L261 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 49 conjunts are in the unsatisfiable core [2022-03-03 19:37:19,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:37:20,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:20,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:20,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:20,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:20,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:20,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:20,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:20,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:20,180 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:20,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:20,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:20,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:20,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:20,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:20,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:20,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:20,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:20,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:20,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:20,184 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:20,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:20,184 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 15 disjoint index pairs (out of 28 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 39 [2022-03-03 19:37:20,196 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:37:20,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:37:20,891 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-03-03 19:37:20,892 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 112 treesize of output 394 [2022-03-03 19:37:21,510 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 3 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:37:21,510 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947060620] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:37:21,510 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:37:21,510 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 15] total 33 [2022-03-03 19:37:21,510 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620526553] [2022-03-03 19:37:21,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:37:21,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 19:37:21,511 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:37:21,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 19:37:21,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=914, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 19:37:21,516 INFO L87 Difference]: Start difference. First operand 2955 states and 6531 transitions. Second operand has 34 states, 34 states have (on average 2.3529411764705883) internal successors, (80), 33 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:37:22,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:37:22,874 INFO L93 Difference]: Finished difference Result 5975 states and 12874 transitions. [2022-03-03 19:37:22,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-03-03 19:37:22,875 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.3529411764705883) internal successors, (80), 33 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-03-03 19:37:22,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:37:22,882 INFO L225 Difference]: With dead ends: 5975 [2022-03-03 19:37:22,882 INFO L226 Difference]: Without dead ends: 5495 [2022-03-03 19:37:22,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 44 SyntacticMatches, 7 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=667, Invalid=3115, Unknown=0, NotChecked=0, Total=3782 [2022-03-03 19:37:22,882 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 446 mSDsluCounter, 1970 mSDsCounter, 0 mSdLazyCounter, 1377 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 1423 SdHoareTripleChecker+Invalid, 1601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 123 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 19:37:22,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [446 Valid, 1423 Invalid, 1601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1377 Invalid, 0 Unknown, 123 Unchecked, 0.6s Time] [2022-03-03 19:37:22,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5495 states. [2022-03-03 19:37:22,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5495 to 2999. [2022-03-03 19:37:22,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2999 states, 2998 states have (on average 2.208138759172782) internal successors, (6620), 2998 states have internal predecessors, (6620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:37:22,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2999 states to 2999 states and 6620 transitions. [2022-03-03 19:37:22,950 INFO L78 Accepts]: Start accepts. Automaton has 2999 states and 6620 transitions. Word has length 35 [2022-03-03 19:37:22,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:37:22,950 INFO L470 AbstractCegarLoop]: Abstraction has 2999 states and 6620 transitions. [2022-03-03 19:37:22,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.3529411764705883) internal successors, (80), 33 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:37:22,950 INFO L276 IsEmpty]: Start isEmpty. Operand 2999 states and 6620 transitions. [2022-03-03 19:37:22,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-03-03 19:37:22,952 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:37:22,953 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:37:22,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2022-03-03 19:37:23,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2022-03-03 19:37:23,168 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:37:23,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:37:23,169 INFO L85 PathProgramCache]: Analyzing trace with hash 414751994, now seen corresponding path program 58 times [2022-03-03 19:37:23,169 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:37:23,169 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749423101] [2022-03-03 19:37:23,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:37:23,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:37:23,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:37:23,460 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:37:23,460 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:37:23,460 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749423101] [2022-03-03 19:37:23,460 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749423101] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:37:23,460 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177176655] [2022-03-03 19:37:23,460 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:37:23,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:37:23,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:37:23,462 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:37:23,488 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:37:23,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:37:23,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-03-03 19:37:23,489 WARN L261 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 49 conjunts are in the unsatisfiable core [2022-03-03 19:37:23,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:37:23,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:23,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:23,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:23,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:23,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:23,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:23,941 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:23,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:23,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:23,942 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:23,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:23,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:23,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:23,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:23,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:23,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:23,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:23,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:23,945 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 15 disjoint index pairs (out of 28 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 39 [2022-03-03 19:37:23,957 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:37:23,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:37:24,625 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-03-03 19:37:24,626 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 112 treesize of output 394 [2022-03-03 19:37:25,730 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 3 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:37:25,730 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177176655] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:37:25,730 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:37:25,730 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 35 [2022-03-03 19:37:25,730 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721004255] [2022-03-03 19:37:25,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:37:25,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-03-03 19:37:25,731 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:37:25,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-03-03 19:37:25,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=1044, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 19:37:25,731 INFO L87 Difference]: Start difference. First operand 2999 states and 6620 transitions. Second operand has 36 states, 36 states have (on average 2.2222222222222223) internal successors, (80), 35 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:37:26,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:37:26,761 INFO L93 Difference]: Finished difference Result 5146 states and 11289 transitions. [2022-03-03 19:37:26,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-03 19:37:26,761 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.2222222222222223) internal successors, (80), 35 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-03-03 19:37:26,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:37:26,768 INFO L225 Difference]: With dead ends: 5146 [2022-03-03 19:37:26,768 INFO L226 Difference]: Without dead ends: 4927 [2022-03-03 19:37:26,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 44 SyntacticMatches, 5 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1004 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=632, Invalid=3400, Unknown=0, NotChecked=0, Total=4032 [2022-03-03 19:37:26,769 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 308 mSDsluCounter, 1652 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 1354 SdHoareTripleChecker+Invalid, 1516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 504 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 19:37:26,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [308 Valid, 1354 Invalid, 1516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 946 Invalid, 0 Unknown, 504 Unchecked, 0.4s Time] [2022-03-03 19:37:26,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4927 states. [2022-03-03 19:37:26,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4927 to 3147. [2022-03-03 19:37:26,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3147 states, 3146 states have (on average 2.214558169103624) internal successors, (6967), 3146 states have internal predecessors, (6967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:37:26,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3147 states to 3147 states and 6967 transitions. [2022-03-03 19:37:26,821 INFO L78 Accepts]: Start accepts. Automaton has 3147 states and 6967 transitions. Word has length 35 [2022-03-03 19:37:26,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:37:26,821 INFO L470 AbstractCegarLoop]: Abstraction has 3147 states and 6967 transitions. [2022-03-03 19:37:26,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.2222222222222223) internal successors, (80), 35 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:37:26,821 INFO L276 IsEmpty]: Start isEmpty. Operand 3147 states and 6967 transitions. [2022-03-03 19:37:26,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-03-03 19:37:26,824 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:37:26,824 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:37:26,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2022-03-03 19:37:27,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:37:27,039 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:37:27,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:37:27,039 INFO L85 PathProgramCache]: Analyzing trace with hash -910338166, now seen corresponding path program 59 times [2022-03-03 19:37:27,039 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:37:27,039 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102216289] [2022-03-03 19:37:27,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:37:27,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:37:27,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:37:27,328 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:37:27,328 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:37:27,328 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102216289] [2022-03-03 19:37:27,328 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102216289] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:37:27,328 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168936509] [2022-03-03 19:37:27,328 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:37:27,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:37:27,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:37:27,329 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:37:27,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-03-03 19:37:27,353 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-03-03 19:37:27,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:37:27,354 WARN L261 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 50 conjunts are in the unsatisfiable core [2022-03-03 19:37:27,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:37:27,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:27,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:27,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:27,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:27,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:27,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:27,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:27,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:27,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:27,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:27,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:27,860 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:27,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:27,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:27,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:27,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:27,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:27,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:27,864 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 15 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 41 [2022-03-03 19:37:27,883 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:37:27,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:37:28,371 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:28,372 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:28,372 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:28,373 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:28,373 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:28,374 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:28,375 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:28,375 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:28,375 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:28,375 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:28,376 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:28,376 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:28,376 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:28,377 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:28,377 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:28,377 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:28,378 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:28,379 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:28,380 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:28,381 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:28,381 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:28,381 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:28,382 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:28,382 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:28,383 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:28,383 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:28,384 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:28,384 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:28,384 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:28,385 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:28,385 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:28,385 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:28,386 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:28,386 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:28,386 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:28,386 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:28,387 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:28,387 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:28,387 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:28,387 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:28,388 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:28,388 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:28,390 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:28,390 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:28,390 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:28,438 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:37:28,438 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 45 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 112 treesize of output 284 [2022-03-03 19:37:28,715 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:37:28,715 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168936509] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:37:28,715 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:37:28,715 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 15] total 33 [2022-03-03 19:37:28,715 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194831991] [2022-03-03 19:37:28,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:37:28,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 19:37:28,715 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:37:28,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 19:37:28,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=842, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 19:37:28,716 INFO L87 Difference]: Start difference. First operand 3147 states and 6967 transitions. Second operand has 34 states, 34 states have (on average 2.2941176470588234) internal successors, (78), 33 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:37:30,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:37:30,317 INFO L93 Difference]: Finished difference Result 5025 states and 10723 transitions. [2022-03-03 19:37:30,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-03 19:37:30,317 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.2941176470588234) internal successors, (78), 33 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-03-03 19:37:30,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:37:30,323 INFO L225 Difference]: With dead ends: 5025 [2022-03-03 19:37:30,323 INFO L226 Difference]: Without dead ends: 4661 [2022-03-03 19:37:30,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 43 SyntacticMatches, 8 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 968 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=777, Invalid=2763, Unknown=0, NotChecked=0, Total=3540 [2022-03-03 19:37:30,324 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 631 mSDsluCounter, 1176 mSDsCounter, 0 mSdLazyCounter, 835 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 19:37:30,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [631 Valid, 872 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 835 Invalid, 0 Unknown, 39 Unchecked, 0.4s Time] [2022-03-03 19:37:30,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4661 states. [2022-03-03 19:37:30,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4661 to 3404. [2022-03-03 19:37:30,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3404 states, 3403 states have (on average 2.208639435791948) internal successors, (7516), 3403 states have internal predecessors, (7516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:37:30,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3404 states to 3404 states and 7516 transitions. [2022-03-03 19:37:30,370 INFO L78 Accepts]: Start accepts. Automaton has 3404 states and 7516 transitions. Word has length 35 [2022-03-03 19:37:30,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:37:30,370 INFO L470 AbstractCegarLoop]: Abstraction has 3404 states and 7516 transitions. [2022-03-03 19:37:30,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.2941176470588234) internal successors, (78), 33 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:37:30,370 INFO L276 IsEmpty]: Start isEmpty. Operand 3404 states and 7516 transitions. [2022-03-03 19:37:30,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-03-03 19:37:30,373 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:37:30,373 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:37:30,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2022-03-03 19:37:30,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:37:30,587 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:37:30,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:37:30,588 INFO L85 PathProgramCache]: Analyzing trace with hash 550321546, now seen corresponding path program 60 times [2022-03-03 19:37:30,588 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:37:30,588 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339607449] [2022-03-03 19:37:30,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:37:30,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:37:30,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:37:30,858 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:37:30,858 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:37:30,858 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339607449] [2022-03-03 19:37:30,858 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339607449] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:37:30,858 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479272482] [2022-03-03 19:37:30,858 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:37:30,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:37:30,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:37:30,861 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:37:30,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-03-03 19:37:30,884 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-03-03 19:37:30,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:37:30,885 WARN L261 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 49 conjunts are in the unsatisfiable core [2022-03-03 19:37:30,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:37:32,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:32,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:32,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:32,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:32,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:32,084 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:32,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:32,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:32,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:32,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:32,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:32,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:32,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:32,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:32,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:32,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:32,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:32,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:32,092 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:32,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:32,092 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 15 disjoint index pairs (out of 28 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 39 [2022-03-03 19:37:32,113 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:37:32,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:37:33,461 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:33,462 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:33,462 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:33,464 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:33,465 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:33,465 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:33,466 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:33,466 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:33,467 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:33,467 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:33,468 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:33,469 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:33,469 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:33,469 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:33,470 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:33,470 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:33,471 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:33,471 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:33,471 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:33,471 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:33,472 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:33,472 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:33,473 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:33,473 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:33,474 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:33,475 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:33,476 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:33,477 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:33,477 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:33,477 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:33,478 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:33,479 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:33,479 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:33,479 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:33,480 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:33,481 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:33,481 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:33,482 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:33,482 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:33,483 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:33,610 INFO L353 Elim1Store]: treesize reduction 63, result has 76.9 percent of original size [2022-03-03 19:37:33,610 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 40 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 26 case distinctions, treesize of input 106 treesize of output 255 [2022-03-03 19:37:34,050 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:37:34,051 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479272482] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:37:34,051 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:37:34,051 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 35 [2022-03-03 19:37:34,053 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827487875] [2022-03-03 19:37:34,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:37:34,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-03-03 19:37:34,053 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:37:34,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-03-03 19:37:34,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=1000, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 19:37:34,053 INFO L87 Difference]: Start difference. First operand 3404 states and 7516 transitions. Second operand has 36 states, 36 states have (on average 2.1944444444444446) internal successors, (79), 35 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:37:37,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:37:37,507 INFO L93 Difference]: Finished difference Result 3803 states and 8346 transitions. [2022-03-03 19:37:37,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-03 19:37:37,508 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.1944444444444446) internal successors, (79), 35 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-03-03 19:37:37,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:37:37,512 INFO L225 Difference]: With dead ends: 3803 [2022-03-03 19:37:37,512 INFO L226 Difference]: Without dead ends: 3791 [2022-03-03 19:37:37,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 51 SyntacticMatches, 8 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=541, Invalid=2429, Unknown=0, NotChecked=0, Total=2970 [2022-03-03 19:37:37,513 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 225 mSDsluCounter, 1043 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 1043 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 493 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:37:37,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 1043 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 153 Invalid, 0 Unknown, 493 Unchecked, 0.1s Time] [2022-03-03 19:37:37,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3791 states. [2022-03-03 19:37:37,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3791 to 3523. [2022-03-03 19:37:37,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3523 states, 3522 states have (on average 2.2234525837592276) internal successors, (7831), 3522 states have internal predecessors, (7831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:37:37,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3523 states to 3523 states and 7831 transitions. [2022-03-03 19:37:37,550 INFO L78 Accepts]: Start accepts. Automaton has 3523 states and 7831 transitions. Word has length 35 [2022-03-03 19:37:37,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:37:37,551 INFO L470 AbstractCegarLoop]: Abstraction has 3523 states and 7831 transitions. [2022-03-03 19:37:37,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.1944444444444446) internal successors, (79), 35 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:37:37,551 INFO L276 IsEmpty]: Start isEmpty. Operand 3523 states and 7831 transitions. [2022-03-03 19:37:37,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-03-03 19:37:37,553 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:37:37,554 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:37:37,569 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2022-03-03 19:37:37,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2022-03-03 19:37:37,769 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:37:37,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:37:37,769 INFO L85 PathProgramCache]: Analyzing trace with hash -949833542, now seen corresponding path program 61 times [2022-03-03 19:37:37,769 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:37:37,769 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12281625] [2022-03-03 19:37:37,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:37:37,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:37:37,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:37:38,033 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-03 19:37:38,033 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:37:38,033 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12281625] [2022-03-03 19:37:38,033 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12281625] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:37:38,033 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191787363] [2022-03-03 19:37:38,033 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:37:38,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:37:38,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:37:38,047 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:37:38,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-03-03 19:37:38,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:37:38,082 WARN L261 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 49 conjunts are in the unsatisfiable core [2022-03-03 19:37:38,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:37:38,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:38,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:38,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:38,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:38,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:38,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:38,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:38,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:38,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:38,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:38,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:38,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:38,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:38,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:38,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:38,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:38,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:38,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:38,650 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:38,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:38,651 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 15 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 39 [2022-03-03 19:37:38,671 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 3 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:37:38,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:37:39,605 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-03-03 19:37:39,606 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 112 treesize of output 394 [2022-03-03 19:37:40,362 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 6 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:37:40,362 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191787363] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:37:40,362 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:37:40,362 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 33 [2022-03-03 19:37:40,362 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563028479] [2022-03-03 19:37:40,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:37:40,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 19:37:40,363 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:37:40,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 19:37:40,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=920, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 19:37:40,363 INFO L87 Difference]: Start difference. First operand 3523 states and 7831 transitions. Second operand has 34 states, 34 states have (on average 2.2058823529411766) internal successors, (75), 33 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:37:41,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:37:41,949 INFO L93 Difference]: Finished difference Result 5765 states and 12652 transitions. [2022-03-03 19:37:41,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-03-03 19:37:41,949 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.2058823529411766) internal successors, (75), 33 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-03-03 19:37:41,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:37:41,958 INFO L225 Difference]: With dead ends: 5765 [2022-03-03 19:37:41,958 INFO L226 Difference]: Without dead ends: 5453 [2022-03-03 19:37:41,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 44 SyntacticMatches, 7 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1714 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1056, Invalid=4950, Unknown=0, NotChecked=0, Total=6006 [2022-03-03 19:37:41,960 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 346 mSDsluCounter, 1710 mSDsCounter, 0 mSdLazyCounter, 1124 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 1472 SdHoareTripleChecker+Invalid, 1446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 243 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 19:37:41,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [346 Valid, 1472 Invalid, 1446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1124 Invalid, 0 Unknown, 243 Unchecked, 0.5s Time] [2022-03-03 19:37:41,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5453 states. [2022-03-03 19:37:42,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5453 to 3586. [2022-03-03 19:37:42,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3586 states, 3585 states have (on average 2.224825662482566) internal successors, (7976), 3585 states have internal predecessors, (7976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:37:42,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3586 states to 3586 states and 7976 transitions. [2022-03-03 19:37:42,018 INFO L78 Accepts]: Start accepts. Automaton has 3586 states and 7976 transitions. Word has length 35 [2022-03-03 19:37:42,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:37:42,018 INFO L470 AbstractCegarLoop]: Abstraction has 3586 states and 7976 transitions. [2022-03-03 19:37:42,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.2058823529411766) internal successors, (75), 33 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:37:42,018 INFO L276 IsEmpty]: Start isEmpty. Operand 3586 states and 7976 transitions. [2022-03-03 19:37:42,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-03-03 19:37:42,021 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:37:42,021 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:37:42,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2022-03-03 19:37:42,237 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,SelfDestructingSolverStorable66 [2022-03-03 19:37:42,237 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:37:42,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:37:42,238 INFO L85 PathProgramCache]: Analyzing trace with hash -210001014, now seen corresponding path program 62 times [2022-03-03 19:37:42,238 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:37:42,238 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930685427] [2022-03-03 19:37:42,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:37:42,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:37:42,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:37:42,550 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:37:42,550 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:37:42,551 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930685427] [2022-03-03 19:37:42,551 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930685427] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:37:42,551 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704745165] [2022-03-03 19:37:42,551 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:37:42,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:37:42,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:37:42,552 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:37:42,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-03-03 19:37:42,573 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:37:42,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:37:42,574 WARN L261 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 49 conjunts are in the unsatisfiable core [2022-03-03 19:37:42,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:37:43,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:43,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:43,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:43,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:43,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:43,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:43,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:43,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:43,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:43,008 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:43,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:43,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:43,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:43,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:43,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:43,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:43,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:43,010 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 15 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 39 [2022-03-03 19:37:43,022 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:37:43,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:37:43,642 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-03-03 19:37:43,642 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 112 treesize of output 394 [2022-03-03 19:37:44,373 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 6 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:37:44,374 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704745165] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:37:44,374 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:37:44,374 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 34 [2022-03-03 19:37:44,374 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716794530] [2022-03-03 19:37:44,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:37:44,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-03-03 19:37:44,374 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:37:44,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-03-03 19:37:44,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=983, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 19:37:44,375 INFO L87 Difference]: Start difference. First operand 3586 states and 7976 transitions. Second operand has 35 states, 35 states have (on average 2.2) internal successors, (77), 34 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:37:45,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:37:45,462 INFO L93 Difference]: Finished difference Result 5283 states and 11632 transitions. [2022-03-03 19:37:45,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-03 19:37:45,479 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.2) internal successors, (77), 34 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-03-03 19:37:45,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:37:45,487 INFO L225 Difference]: With dead ends: 5283 [2022-03-03 19:37:45,487 INFO L226 Difference]: Without dead ends: 5238 [2022-03-03 19:37:45,487 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 44 SyntacticMatches, 6 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1025 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=697, Invalid=3463, Unknown=0, NotChecked=0, Total=4160 [2022-03-03 19:37:45,487 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 271 mSDsluCounter, 1493 mSDsCounter, 0 mSdLazyCounter, 944 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 1385 SdHoareTripleChecker+Invalid, 1273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 271 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 19:37:45,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [271 Valid, 1385 Invalid, 1273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 944 Invalid, 0 Unknown, 271 Unchecked, 0.4s Time] [2022-03-03 19:37:45,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5238 states. [2022-03-03 19:37:45,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5238 to 3736. [2022-03-03 19:37:45,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3736 states, 3735 states have (on average 2.23239625167336) internal successors, (8338), 3735 states have internal predecessors, (8338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:37:45,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3736 states to 3736 states and 8338 transitions. [2022-03-03 19:37:45,589 INFO L78 Accepts]: Start accepts. Automaton has 3736 states and 8338 transitions. Word has length 35 [2022-03-03 19:37:45,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:37:45,589 INFO L470 AbstractCegarLoop]: Abstraction has 3736 states and 8338 transitions. [2022-03-03 19:37:45,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.2) internal successors, (77), 34 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:37:45,589 INFO L276 IsEmpty]: Start isEmpty. Operand 3736 states and 8338 transitions. [2022-03-03 19:37:45,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-03-03 19:37:45,592 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:37:45,592 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:37:45,608 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2022-03-03 19:37:45,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:37:45,802 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:37:45,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:37:45,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1249970874, now seen corresponding path program 63 times [2022-03-03 19:37:45,803 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:37:45,803 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654989116] [2022-03-03 19:37:45,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:37:45,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:37:45,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:37:46,104 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:37:46,104 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:37:46,104 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654989116] [2022-03-03 19:37:46,104 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654989116] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:37:46,104 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965695614] [2022-03-03 19:37:46,104 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:37:46,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:37:46,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:37:46,105 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:37:46,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-03-03 19:37:46,127 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-03-03 19:37:46,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:37:46,128 WARN L261 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 49 conjunts are in the unsatisfiable core [2022-03-03 19:37:46,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:37:46,527 INFO L353 Elim1Store]: treesize reduction 170, result has 0.6 percent of original size [2022-03-03 19:37:46,527 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 105 treesize of output 39 [2022-03-03 19:37:46,539 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:37:46,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:37:47,448 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-03-03 19:37:47,449 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 112 treesize of output 394 [2022-03-03 19:37:48,356 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:37:48,357 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965695614] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:37:48,357 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:37:48,357 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 33 [2022-03-03 19:37:48,357 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114613240] [2022-03-03 19:37:48,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:37:48,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 19:37:48,357 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:37:48,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 19:37:48,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=926, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 19:37:48,357 INFO L87 Difference]: Start difference. First operand 3736 states and 8338 transitions. Second operand has 34 states, 34 states have (on average 2.176470588235294) internal successors, (74), 33 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:37:49,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:37:49,511 INFO L93 Difference]: Finished difference Result 5713 states and 12688 transitions. [2022-03-03 19:37:49,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-03 19:37:49,511 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.176470588235294) internal successors, (74), 33 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-03-03 19:37:49,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:37:49,518 INFO L225 Difference]: With dead ends: 5713 [2022-03-03 19:37:49,518 INFO L226 Difference]: Without dead ends: 5683 [2022-03-03 19:37:49,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 44 SyntacticMatches, 7 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 789 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=610, Invalid=3050, Unknown=0, NotChecked=0, Total=3660 [2022-03-03 19:37:49,519 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 245 mSDsluCounter, 1366 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 1357 SdHoareTripleChecker+Invalid, 1191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 19:37:49,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 1357 Invalid, 1191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 19:37:49,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5683 states. [2022-03-03 19:37:49,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5683 to 3696. [2022-03-03 19:37:49,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3696 states, 3695 states have (on average 2.230581867388363) internal successors, (8242), 3695 states have internal predecessors, (8242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:37:49,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3696 states to 3696 states and 8242 transitions. [2022-03-03 19:37:49,600 INFO L78 Accepts]: Start accepts. Automaton has 3696 states and 8242 transitions. Word has length 35 [2022-03-03 19:37:49,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:37:49,600 INFO L470 AbstractCegarLoop]: Abstraction has 3696 states and 8242 transitions. [2022-03-03 19:37:49,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.176470588235294) internal successors, (74), 33 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:37:49,600 INFO L276 IsEmpty]: Start isEmpty. Operand 3696 states and 8242 transitions. [2022-03-03 19:37:49,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-03 19:37:49,603 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:37:49,603 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:37:49,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2022-03-03 19:37:49,805 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,SelfDestructingSolverStorable68 [2022-03-03 19:37:49,805 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:37:49,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:37:49,806 INFO L85 PathProgramCache]: Analyzing trace with hash -550040129, now seen corresponding path program 64 times [2022-03-03 19:37:49,806 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:37:49,806 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852156628] [2022-03-03 19:37:49,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:37:49,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:37:49,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:37:49,851 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 34 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 19:37:49,851 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:37:49,851 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852156628] [2022-03-03 19:37:49,851 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852156628] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:37:49,851 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720148696] [2022-03-03 19:37:49,851 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:37:49,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:37:49,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:37:49,852 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:37:49,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-03-03 19:37:49,878 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:37:49,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:37:49,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-03 19:37:49,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:37:49,943 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 34 proven. 34 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 19:37:49,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:37:50,012 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 34 proven. 34 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 19:37:50,012 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720148696] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:37:50,012 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:37:50,012 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 8 [2022-03-03 19:37:50,012 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020664980] [2022-03-03 19:37:50,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:37:50,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-03 19:37:50,012 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:37:50,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-03 19:37:50,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-03-03 19:37:50,013 INFO L87 Difference]: Start difference. First operand 3696 states and 8242 transitions. Second operand has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:37:50,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:37:50,053 INFO L93 Difference]: Finished difference Result 4782 states and 10779 transitions. [2022-03-03 19:37:50,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:37:50,053 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 8 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 36 [2022-03-03 19:37:50,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:37:50,059 INFO L225 Difference]: With dead ends: 4782 [2022-03-03 19:37:50,059 INFO L226 Difference]: Without dead ends: 4767 [2022-03-03 19:37:50,060 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-03-03 19:37:50,060 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 79 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 19:37:50,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 80 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 19:37:50,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4767 states. [2022-03-03 19:37:50,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4767 to 4371. [2022-03-03 19:37:50,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4371 states, 4370 states have (on average 2.2496567505720826) internal successors, (9831), 4370 states have internal predecessors, (9831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:37:50,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4371 states to 4371 states and 9831 transitions. [2022-03-03 19:37:50,111 INFO L78 Accepts]: Start accepts. Automaton has 4371 states and 9831 transitions. Word has length 36 [2022-03-03 19:37:50,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:37:50,111 INFO L470 AbstractCegarLoop]: Abstraction has 4371 states and 9831 transitions. [2022-03-03 19:37:50,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:37:50,111 INFO L276 IsEmpty]: Start isEmpty. Operand 4371 states and 9831 transitions. [2022-03-03 19:37:50,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-03 19:37:50,114 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:37:50,114 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:37:50,130 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2022-03-03 19:37:50,319 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,SelfDestructingSolverStorable69 [2022-03-03 19:37:50,319 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:37:50,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:37:50,320 INFO L85 PathProgramCache]: Analyzing trace with hash -75450097, now seen corresponding path program 65 times [2022-03-03 19:37:50,320 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:37:50,320 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269597987] [2022-03-03 19:37:50,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:37:50,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:37:50,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:37:50,378 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 39 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:37:50,379 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:37:50,379 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269597987] [2022-03-03 19:37:50,379 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269597987] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:37:50,379 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459224696] [2022-03-03 19:37:50,379 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:37:50,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:37:50,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:37:50,380 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:37:50,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-03-03 19:37:50,413 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-03-03 19:37:50,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:37:50,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-03 19:37:50,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:37:50,467 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 39 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:37:50,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:37:50,526 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 39 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:37:50,526 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459224696] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:37:50,527 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:37:50,527 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 9 [2022-03-03 19:37:50,527 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650830923] [2022-03-03 19:37:50,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:37:50,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-03 19:37:50,527 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:37:50,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-03 19:37:50,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:37:50,528 INFO L87 Difference]: Start difference. First operand 4371 states and 9831 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:37:50,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:37:50,589 INFO L93 Difference]: Finished difference Result 6001 states and 13669 transitions. [2022-03-03 19:37:50,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-03 19:37:50,592 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 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 36 [2022-03-03 19:37:50,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:37:50,599 INFO L225 Difference]: With dead ends: 6001 [2022-03-03 19:37:50,599 INFO L226 Difference]: Without dead ends: 5994 [2022-03-03 19:37:50,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:37:50,600 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 103 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 19:37:50,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 97 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 19:37:50,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5994 states. [2022-03-03 19:37:50,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5994 to 5544. [2022-03-03 19:37:50,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5544 states, 5543 states have (on average 2.28287930723435) internal successors, (12654), 5543 states have internal predecessors, (12654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:37:50,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5544 states to 5544 states and 12654 transitions. [2022-03-03 19:37:50,701 INFO L78 Accepts]: Start accepts. Automaton has 5544 states and 12654 transitions. Word has length 36 [2022-03-03 19:37:50,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:37:50,701 INFO L470 AbstractCegarLoop]: Abstraction has 5544 states and 12654 transitions. [2022-03-03 19:37:50,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:37:50,701 INFO L276 IsEmpty]: Start isEmpty. Operand 5544 states and 12654 transitions. [2022-03-03 19:37:50,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-03-03 19:37:50,708 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:37:50,708 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:37:50,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2022-03-03 19:37:50,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:37:50,924 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:37:50,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:37:50,924 INFO L85 PathProgramCache]: Analyzing trace with hash -126350153, now seen corresponding path program 66 times [2022-03-03 19:37:50,924 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:37:50,924 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718899788] [2022-03-03 19:37:50,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:37:50,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:37:50,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:37:51,203 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:37:51,203 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:37:51,204 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718899788] [2022-03-03 19:37:51,204 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718899788] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:37:51,204 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739668447] [2022-03-03 19:37:51,204 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:37:51,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:37:51,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:37:51,205 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:37:51,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-03-03 19:37:51,228 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2022-03-03 19:37:51,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:37:51,229 WARN L261 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 53 conjunts are in the unsatisfiable core [2022-03-03 19:37:51,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:37:51,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:51,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:51,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:51,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:51,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:51,927 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:51,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:51,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:51,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:51,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:51,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:51,929 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:51,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:51,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:51,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:51,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:51,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:51,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:51,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:51,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:51,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:51,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:51,934 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:51,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:51,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:51,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:51,936 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:51,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:51,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:51,937 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:51,938 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 15 disjoint index pairs (out of 55 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 39 [2022-03-03 19:37:51,954 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 3 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:37:51,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:37:52,635 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-03-03 19:37:52,636 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 114 treesize of output 396 [2022-03-03 19:37:53,308 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 6 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:37:53,308 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739668447] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:37:53,308 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:37:53,308 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 15] total 39 [2022-03-03 19:37:53,308 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638996247] [2022-03-03 19:37:53,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:37:53,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-03-03 19:37:53,309 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:37:53,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-03-03 19:37:53,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=1303, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 19:37:53,309 INFO L87 Difference]: Start difference. First operand 5544 states and 12654 transitions. Second operand has 40 states, 40 states have (on average 2.45) internal successors, (98), 39 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:37:54,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:37:54,859 INFO L93 Difference]: Finished difference Result 9557 states and 21469 transitions. [2022-03-03 19:37:54,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-03-03 19:37:54,859 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.45) internal successors, (98), 39 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2022-03-03 19:37:54,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:37:54,873 INFO L225 Difference]: With dead ends: 9557 [2022-03-03 19:37:54,873 INFO L226 Difference]: Without dead ends: 8975 [2022-03-03 19:37:54,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1718 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=937, Invalid=5069, Unknown=0, NotChecked=0, Total=6006 [2022-03-03 19:37:54,874 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 488 mSDsluCounter, 2060 mSDsCounter, 0 mSdLazyCounter, 1156 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 1451 SdHoareTripleChecker+Invalid, 1685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 442 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 19:37:54,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [488 Valid, 1451 Invalid, 1685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1156 Invalid, 0 Unknown, 442 Unchecked, 0.5s Time] [2022-03-03 19:37:54,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8975 states. [2022-03-03 19:37:54,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8975 to 5433. [2022-03-03 19:37:54,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5433 states, 5432 states have (on average 2.2790868924889542) internal successors, (12380), 5432 states have internal predecessors, (12380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:37:54,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5433 states to 5433 states and 12380 transitions. [2022-03-03 19:37:54,967 INFO L78 Accepts]: Start accepts. Automaton has 5433 states and 12380 transitions. Word has length 38 [2022-03-03 19:37:54,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:37:54,968 INFO L470 AbstractCegarLoop]: Abstraction has 5433 states and 12380 transitions. [2022-03-03 19:37:54,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.45) internal successors, (98), 39 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:37:54,968 INFO L276 IsEmpty]: Start isEmpty. Operand 5433 states and 12380 transitions. [2022-03-03 19:37:54,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-03-03 19:37:54,972 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:37:54,972 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:37:55,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2022-03-03 19:37:55,200 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,SelfDestructingSolverStorable71 [2022-03-03 19:37:55,200 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:37:55,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:37:55,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1118066151, now seen corresponding path program 67 times [2022-03-03 19:37:55,201 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:37:55,201 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606457596] [2022-03-03 19:37:55,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:37:55,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:37:55,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:37:55,466 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:37:55,466 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:37:55,466 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606457596] [2022-03-03 19:37:55,466 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606457596] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:37:55,466 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654827987] [2022-03-03 19:37:55,466 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:37:55,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:37:55,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:37:55,467 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:37:55,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-03-03 19:37:55,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:37:55,490 WARN L261 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 49 conjunts are in the unsatisfiable core [2022-03-03 19:37:55,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:37:56,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:56,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:56,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:56,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:56,072 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:56,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:56,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:56,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:56,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:56,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:56,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:56,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:56,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:56,076 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:56,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:56,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:56,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:56,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:56,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:56,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:56,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:56,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:56,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:56,079 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:56,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:56,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:56,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:56,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:56,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:56,081 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:56,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:56,082 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:56,082 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 15 disjoint index pairs (out of 55 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 39 [2022-03-03 19:37:56,095 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:37:56,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:37:56,776 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-03-03 19:37:56,777 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 112 treesize of output 394 [2022-03-03 19:37:57,774 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 24 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:37:57,775 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654827987] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:37:57,775 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:37:57,775 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 38 [2022-03-03 19:37:57,775 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635453846] [2022-03-03 19:37:57,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:37:57,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-03-03 19:37:57,775 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:37:57,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-03-03 19:37:57,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=1241, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 19:37:57,776 INFO L87 Difference]: Start difference. First operand 5433 states and 12380 transitions. Second operand has 39 states, 39 states have (on average 2.5128205128205128) internal successors, (98), 38 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:37:58,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:37:58,618 INFO L93 Difference]: Finished difference Result 7645 states and 17175 transitions. [2022-03-03 19:37:58,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-03 19:37:58,618 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.5128205128205128) internal successors, (98), 38 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2022-03-03 19:37:58,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:37:58,628 INFO L225 Difference]: With dead ends: 7645 [2022-03-03 19:37:58,628 INFO L226 Difference]: Without dead ends: 7615 [2022-03-03 19:37:58,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1093 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=619, Invalid=3413, Unknown=0, NotChecked=0, Total=4032 [2022-03-03 19:37:58,629 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 244 mSDsluCounter, 1064 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 1053 SdHoareTripleChecker+Invalid, 1112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 422 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:37:58,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [244 Valid, 1053 Invalid, 1112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 613 Invalid, 0 Unknown, 422 Unchecked, 0.3s Time] [2022-03-03 19:37:58,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7615 states. [2022-03-03 19:37:58,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7615 to 5418. [2022-03-03 19:37:58,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5418 states, 5417 states have (on average 2.278936680819642) internal successors, (12345), 5417 states have internal predecessors, (12345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:37:58,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5418 states to 5418 states and 12345 transitions. [2022-03-03 19:37:58,705 INFO L78 Accepts]: Start accepts. Automaton has 5418 states and 12345 transitions. Word has length 38 [2022-03-03 19:37:58,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:37:58,705 INFO L470 AbstractCegarLoop]: Abstraction has 5418 states and 12345 transitions. [2022-03-03 19:37:58,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.5128205128205128) internal successors, (98), 38 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:37:58,705 INFO L276 IsEmpty]: Start isEmpty. Operand 5418 states and 12345 transitions. [2022-03-03 19:37:58,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-03-03 19:37:58,709 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:37:58,709 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:37:58,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2022-03-03 19:37:58,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:37:58,923 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:37:58,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:37:58,924 INFO L85 PathProgramCache]: Analyzing trace with hash 179362343, now seen corresponding path program 68 times [2022-03-03 19:37:58,924 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:37:58,924 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971572030] [2022-03-03 19:37:58,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:37:58,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:37:58,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:37:59,134 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:37:59,134 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:37:59,134 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971572030] [2022-03-03 19:37:59,134 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971572030] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:37:59,134 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482897675] [2022-03-03 19:37:59,134 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:37:59,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:37:59,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:37:59,145 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:37:59,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-03-03 19:37:59,185 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:37:59,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:37:59,186 WARN L261 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 49 conjunts are in the unsatisfiable core [2022-03-03 19:37:59,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:37:59,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:59,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:59,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:59,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:59,760 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:59,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:59,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:59,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:59,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:59,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:59,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:59,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:59,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:59,764 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:59,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:59,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:59,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:59,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:59,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:59,766 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:59,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:59,766 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:37:59,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:59,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:59,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:37:59,768 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 15 disjoint index pairs (out of 45 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 39 [2022-03-03 19:37:59,779 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:37:59,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:38:00,432 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-03-03 19:38:00,433 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 112 treesize of output 394 [2022-03-03 19:38:01,151 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 6 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:38:01,151 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482897675] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:38:01,151 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:38:01,151 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 37 [2022-03-03 19:38:01,151 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748459888] [2022-03-03 19:38:01,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:38:01,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-03-03 19:38:01,151 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:38:01,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-03-03 19:38:01,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=1174, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 19:38:01,152 INFO L87 Difference]: Start difference. First operand 5418 states and 12345 transitions. Second operand has 38 states, 38 states have (on average 2.5) internal successors, (95), 37 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:38:02,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:38:02,588 INFO L93 Difference]: Finished difference Result 8029 states and 18002 transitions. [2022-03-03 19:38:02,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-03 19:38:02,588 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.5) internal successors, (95), 37 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2022-03-03 19:38:02,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:38:02,599 INFO L225 Difference]: With dead ends: 8029 [2022-03-03 19:38:02,599 INFO L226 Difference]: Without dead ends: 7999 [2022-03-03 19:38:02,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 52 SyntacticMatches, 3 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1377 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=835, Invalid=4135, Unknown=0, NotChecked=0, Total=4970 [2022-03-03 19:38:02,600 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 244 mSDsluCounter, 1180 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 1107 SdHoareTripleChecker+Invalid, 1057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 310 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 19:38:02,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [244 Valid, 1107 Invalid, 1057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 683 Invalid, 0 Unknown, 310 Unchecked, 0.4s Time] [2022-03-03 19:38:02,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7999 states. [2022-03-03 19:38:02,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7999 to 5406. [2022-03-03 19:38:02,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5406 states, 5405 states have (on average 2.2788159111933397) internal successors, (12317), 5405 states have internal predecessors, (12317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:38:02,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5406 states to 5406 states and 12317 transitions. [2022-03-03 19:38:02,689 INFO L78 Accepts]: Start accepts. Automaton has 5406 states and 12317 transitions. Word has length 38 [2022-03-03 19:38:02,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:38:02,689 INFO L470 AbstractCegarLoop]: Abstraction has 5406 states and 12317 transitions. [2022-03-03 19:38:02,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.5) internal successors, (95), 37 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:38:02,690 INFO L276 IsEmpty]: Start isEmpty. Operand 5406 states and 12317 transitions. [2022-03-03 19:38:02,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-03-03 19:38:02,693 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:38:02,693 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:38:02,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2022-03-03 19:38:02,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:38:02,908 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:38:02,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:38:02,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1553836215, now seen corresponding path program 69 times [2022-03-03 19:38:02,909 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:38:02,909 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724610225] [2022-03-03 19:38:02,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:38:02,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:38:02,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:38:03,220 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:38:03,221 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:38:03,221 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724610225] [2022-03-03 19:38:03,221 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724610225] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:38:03,221 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818329978] [2022-03-03 19:38:03,221 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:38:03,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:38:03,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:38:03,222 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:38:03,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-03-03 19:38:03,247 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-03-03 19:38:03,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:38:03,248 WARN L261 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 49 conjunts are in the unsatisfiable core [2022-03-03 19:38:03,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:38:03,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:03,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:03,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:03,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:03,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:03,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:03,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:03,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:03,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:03,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:03,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:03,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:03,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:03,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:03,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:03,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:03,872 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:03,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:03,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:03,873 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:03,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:03,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:03,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:03,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:03,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:03,875 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:03,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:03,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:03,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:03,877 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:03,877 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 15 disjoint index pairs (out of 45 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 39 [2022-03-03 19:38:03,889 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:38:03,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:38:04,517 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-03-03 19:38:04,517 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 112 treesize of output 394 [2022-03-03 19:38:05,253 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 16 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:38:05,253 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818329978] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:38:05,253 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:38:05,253 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 37 [2022-03-03 19:38:05,253 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179133660] [2022-03-03 19:38:05,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:38:05,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-03-03 19:38:05,253 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:38:05,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-03-03 19:38:05,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=1174, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 19:38:05,254 INFO L87 Difference]: Start difference. First operand 5406 states and 12317 transitions. Second operand has 38 states, 38 states have (on average 2.5) internal successors, (95), 37 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:38:07,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:38:07,293 INFO L93 Difference]: Finished difference Result 6913 states and 15499 transitions. [2022-03-03 19:38:07,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-03-03 19:38:07,293 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.5) internal successors, (95), 37 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2022-03-03 19:38:07,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:38:07,302 INFO L225 Difference]: With dead ends: 6913 [2022-03-03 19:38:07,302 INFO L226 Difference]: Without dead ends: 6895 [2022-03-03 19:38:07,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 51 SyntacticMatches, 3 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2367 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1185, Invalid=6647, Unknown=0, NotChecked=0, Total=7832 [2022-03-03 19:38:07,303 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 272 mSDsluCounter, 1395 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 1354 SdHoareTripleChecker+Invalid, 1477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 379 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 19:38:07,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 1354 Invalid, 1477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1036 Invalid, 0 Unknown, 379 Unchecked, 0.6s Time] [2022-03-03 19:38:07,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6895 states. [2022-03-03 19:38:07,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6895 to 5612. [2022-03-03 19:38:07,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5612 states, 5611 states have (on average 2.283193726608448) internal successors, (12811), 5611 states have internal predecessors, (12811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:38:07,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5612 states to 5612 states and 12811 transitions. [2022-03-03 19:38:07,377 INFO L78 Accepts]: Start accepts. Automaton has 5612 states and 12811 transitions. Word has length 38 [2022-03-03 19:38:07,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:38:07,377 INFO L470 AbstractCegarLoop]: Abstraction has 5612 states and 12811 transitions. [2022-03-03 19:38:07,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.5) internal successors, (95), 37 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:38:07,377 INFO L276 IsEmpty]: Start isEmpty. Operand 5612 states and 12811 transitions. [2022-03-03 19:38:07,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-03-03 19:38:07,381 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:38:07,381 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:38:07,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2022-03-03 19:38:07,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:38:07,598 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:38:07,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:38:07,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1601733385, now seen corresponding path program 70 times [2022-03-03 19:38:07,598 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:38:07,598 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554782974] [2022-03-03 19:38:07,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:38:07,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:38:07,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:38:07,850 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:38:07,850 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:38:07,850 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554782974] [2022-03-03 19:38:07,850 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554782974] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:38:07,851 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657613156] [2022-03-03 19:38:07,851 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:38:07,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:38:07,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:38:07,852 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:38:07,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-03-03 19:38:07,874 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:38:07,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:38:07,875 WARN L261 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 49 conjunts are in the unsatisfiable core [2022-03-03 19:38:07,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:38:08,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:08,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:08,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:08,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:08,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:08,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:08,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:08,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:08,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:08,460 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:08,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:08,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:08,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:08,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:08,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:08,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:08,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:08,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:08,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:08,464 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:08,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:08,465 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 15 disjoint index pairs (out of 28 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 39 [2022-03-03 19:38:08,476 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:38:08,476 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:38:09,384 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-03-03 19:38:09,384 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 112 treesize of output 394 [2022-03-03 19:38:10,343 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 8 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:38:10,344 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657613156] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:38:10,344 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:38:10,344 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 34 [2022-03-03 19:38:10,344 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313965635] [2022-03-03 19:38:10,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:38:10,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-03-03 19:38:10,344 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:38:10,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-03-03 19:38:10,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=985, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 19:38:10,344 INFO L87 Difference]: Start difference. First operand 5612 states and 12811 transitions. Second operand has 35 states, 35 states have (on average 2.5428571428571427) internal successors, (89), 34 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:38:11,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:38:11,897 INFO L93 Difference]: Finished difference Result 9861 states and 22431 transitions. [2022-03-03 19:38:11,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-03-03 19:38:11,897 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.5428571428571427) internal successors, (89), 34 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2022-03-03 19:38:11,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:38:11,911 INFO L225 Difference]: With dead ends: 9861 [2022-03-03 19:38:11,911 INFO L226 Difference]: Without dead ends: 9397 [2022-03-03 19:38:11,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 51 SyntacticMatches, 6 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1322 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=757, Invalid=4213, Unknown=0, NotChecked=0, Total=4970 [2022-03-03 19:38:11,912 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 426 mSDsluCounter, 2474 mSDsCounter, 0 mSdLazyCounter, 1294 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 1761 SdHoareTripleChecker+Invalid, 1820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 453 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 19:38:11,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [426 Valid, 1761 Invalid, 1820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1294 Invalid, 0 Unknown, 453 Unchecked, 0.5s Time] [2022-03-03 19:38:11,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9397 states. [2022-03-03 19:38:12,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9397 to 6792. [2022-03-03 19:38:12,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6792 states, 6791 states have (on average 2.298336032984833) internal successors, (15608), 6791 states have internal predecessors, (15608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:38:12,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6792 states to 6792 states and 15608 transitions. [2022-03-03 19:38:12,042 INFO L78 Accepts]: Start accepts. Automaton has 6792 states and 15608 transitions. Word has length 38 [2022-03-03 19:38:12,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:38:12,042 INFO L470 AbstractCegarLoop]: Abstraction has 6792 states and 15608 transitions. [2022-03-03 19:38:12,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.5428571428571427) internal successors, (89), 34 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:38:12,042 INFO L276 IsEmpty]: Start isEmpty. Operand 6792 states and 15608 transitions. [2022-03-03 19:38:12,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-03-03 19:38:12,047 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:38:12,047 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:38:12,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2022-03-03 19:38:12,263 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,SelfDestructingSolverStorable75 [2022-03-03 19:38:12,263 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:38:12,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:38:12,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1413514287, now seen corresponding path program 71 times [2022-03-03 19:38:12,264 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:38:12,264 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413318598] [2022-03-03 19:38:12,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:38:12,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:38:12,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:38:12,555 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 19:38:12,555 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:38:12,555 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413318598] [2022-03-03 19:38:12,555 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413318598] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:38:12,555 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018894944] [2022-03-03 19:38:12,555 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:38:12,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:38:12,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:38:12,556 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:38:12,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-03-03 19:38:12,592 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-03-03 19:38:12,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:38:12,593 WARN L261 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 49 conjunts are in the unsatisfiable core [2022-03-03 19:38:12,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:38:12,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:12,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:12,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:12,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:12,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:12,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:12,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:12,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:12,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:12,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:12,996 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:12,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:12,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:12,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:12,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:12,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:12,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:12,999 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 15 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 39 [2022-03-03 19:38:13,017 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 19:38:13,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:38:13,713 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-03-03 19:38:13,713 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 112 treesize of output 394 [2022-03-03 19:38:14,307 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 6 proven. 71 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 19:38:14,308 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018894944] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:38:14,308 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:38:14,308 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 33 [2022-03-03 19:38:14,308 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878339803] [2022-03-03 19:38:14,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:38:14,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 19:38:14,308 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:38:14,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 19:38:14,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=920, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 19:38:14,309 INFO L87 Difference]: Start difference. First operand 6792 states and 15608 transitions. Second operand has 34 states, 34 states have (on average 2.3823529411764706) internal successors, (81), 33 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:38:15,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:38:15,304 INFO L93 Difference]: Finished difference Result 9603 states and 21742 transitions. [2022-03-03 19:38:15,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-03 19:38:15,304 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.3823529411764706) internal successors, (81), 33 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2022-03-03 19:38:15,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:38:15,316 INFO L225 Difference]: With dead ends: 9603 [2022-03-03 19:38:15,316 INFO L226 Difference]: Without dead ends: 9545 [2022-03-03 19:38:15,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 52 SyntacticMatches, 7 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 732 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=529, Invalid=2441, Unknown=0, NotChecked=0, Total=2970 [2022-03-03 19:38:15,316 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 235 mSDsluCounter, 1146 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 153 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:38:15,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 959 Invalid, 938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 710 Invalid, 0 Unknown, 153 Unchecked, 0.3s Time] [2022-03-03 19:38:15,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9545 states. [2022-03-03 19:38:15,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9545 to 7236. [2022-03-03 19:38:15,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7236 states, 7235 states have (on average 2.31596406357982) internal successors, (16756), 7235 states have internal predecessors, (16756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:38:15,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7236 states to 7236 states and 16756 transitions. [2022-03-03 19:38:15,405 INFO L78 Accepts]: Start accepts. Automaton has 7236 states and 16756 transitions. Word has length 38 [2022-03-03 19:38:15,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:38:15,405 INFO L470 AbstractCegarLoop]: Abstraction has 7236 states and 16756 transitions. [2022-03-03 19:38:15,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.3823529411764706) internal successors, (81), 33 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:38:15,405 INFO L276 IsEmpty]: Start isEmpty. Operand 7236 states and 16756 transitions. [2022-03-03 19:38:15,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-03-03 19:38:15,409 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:38:15,409 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:38:15,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2022-03-03 19:38:15,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:38:15,622 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:38:15,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:38:15,623 INFO L85 PathProgramCache]: Analyzing trace with hash 378106983, now seen corresponding path program 72 times [2022-03-03 19:38:15,623 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:38:15,623 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879951752] [2022-03-03 19:38:15,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:38:15,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:38:15,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:38:15,894 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:38:15,894 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:38:15,895 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879951752] [2022-03-03 19:38:15,895 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879951752] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:38:15,895 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984101821] [2022-03-03 19:38:15,895 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:38:15,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:38:15,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:38:15,896 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:38:15,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-03-03 19:38:15,919 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-03-03 19:38:15,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:38:15,920 WARN L261 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 53 conjunts are in the unsatisfiable core [2022-03-03 19:38:15,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:38:16,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:16,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:16,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:16,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:16,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:16,421 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:16,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:16,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:16,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:16,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:16,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:16,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:16,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:16,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:16,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:16,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:16,427 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 15 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 39 [2022-03-03 19:38:16,439 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:38:16,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:38:17,316 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-03-03 19:38:17,316 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 114 treesize of output 396 [2022-03-03 19:38:17,837 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 6 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:38:17,838 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984101821] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:38:17,838 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:38:17,838 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 15] total 35 [2022-03-03 19:38:17,838 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979661691] [2022-03-03 19:38:17,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:38:17,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-03-03 19:38:17,838 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:38:17,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-03-03 19:38:17,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=1036, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 19:38:17,839 INFO L87 Difference]: Start difference. First operand 7236 states and 16756 transitions. Second operand has 36 states, 36 states have (on average 2.388888888888889) internal successors, (86), 35 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:38:20,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:38:20,016 INFO L93 Difference]: Finished difference Result 11795 states and 26648 transitions. [2022-03-03 19:38:20,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-03-03 19:38:20,017 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.388888888888889) internal successors, (86), 35 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2022-03-03 19:38:20,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:38:20,030 INFO L225 Difference]: With dead ends: 11795 [2022-03-03 19:38:20,030 INFO L226 Difference]: Without dead ends: 11076 [2022-03-03 19:38:20,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 49 SyntacticMatches, 6 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1624 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=984, Invalid=5178, Unknown=0, NotChecked=0, Total=6162 [2022-03-03 19:38:20,031 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 515 mSDsluCounter, 2858 mSDsCounter, 0 mSdLazyCounter, 1459 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 1949 SdHoareTripleChecker+Invalid, 2395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 851 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 19:38:20,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [515 Valid, 1949 Invalid, 2395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1459 Invalid, 0 Unknown, 851 Unchecked, 0.7s Time] [2022-03-03 19:38:20,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11076 states. [2022-03-03 19:38:20,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11076 to 7037. [2022-03-03 19:38:20,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7037 states, 7036 states have (on average 2.3099772598067085) internal successors, (16253), 7036 states have internal predecessors, (16253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:38:20,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7037 states to 7037 states and 16253 transitions. [2022-03-03 19:38:20,128 INFO L78 Accepts]: Start accepts. Automaton has 7037 states and 16253 transitions. Word has length 38 [2022-03-03 19:38:20,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:38:20,128 INFO L470 AbstractCegarLoop]: Abstraction has 7037 states and 16253 transitions. [2022-03-03 19:38:20,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.388888888888889) internal successors, (86), 35 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:38:20,128 INFO L276 IsEmpty]: Start isEmpty. Operand 7037 states and 16253 transitions. [2022-03-03 19:38:20,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-03 19:38:20,132 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:38:20,132 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:38:20,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2022-03-03 19:38:20,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:38:20,348 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:38:20,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:38:20,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1281737470, now seen corresponding path program 73 times [2022-03-03 19:38:20,348 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:38:20,348 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519221158] [2022-03-03 19:38:20,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:38:20,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:38:20,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:38:20,642 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:38:20,642 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:38:20,642 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519221158] [2022-03-03 19:38:20,642 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519221158] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:38:20,642 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956985477] [2022-03-03 19:38:20,642 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:38:20,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:38:20,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:38:20,643 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:38:20,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-03-03 19:38:20,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:38:20,666 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 57 conjunts are in the unsatisfiable core [2022-03-03 19:38:20,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:38:21,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:21,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:21,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:21,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:21,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:21,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:21,446 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:21,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:21,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:21,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:21,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:21,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:21,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:21,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:21,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:21,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:21,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:21,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:21,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:21,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:21,452 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:21,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:21,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:21,453 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:21,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:21,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:21,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:21,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:21,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:21,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:21,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:21,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:21,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:21,457 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:21,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:21,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:21,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:21,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:21,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:21,460 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:21,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:21,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:21,461 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:21,461 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 21 disjoint index pairs (out of 78 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 44 [2022-03-03 19:38:21,475 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 2 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:38:21,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:38:22,522 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-03-03 19:38:22,522 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 130 treesize of output 528 [2022-03-03 19:38:23,641 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 6 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:38:23,642 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956985477] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:38:23,642 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:38:23,642 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 17] total 43 [2022-03-03 19:38:23,642 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605127790] [2022-03-03 19:38:23,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:38:23,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-03-03 19:38:23,642 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:38:23,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-03-03 19:38:23,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=279, Invalid=1613, Unknown=0, NotChecked=0, Total=1892 [2022-03-03 19:38:23,642 INFO L87 Difference]: Start difference. First operand 7037 states and 16253 transitions. Second operand has 44 states, 44 states have (on average 2.2954545454545454) internal successors, (101), 43 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:38:27,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:38:27,354 INFO L93 Difference]: Finished difference Result 16057 states and 36105 transitions. [2022-03-03 19:38:27,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2022-03-03 19:38:27,354 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.2954545454545454) internal successors, (101), 43 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-03-03 19:38:27,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:38:27,381 INFO L225 Difference]: With dead ends: 16057 [2022-03-03 19:38:27,381 INFO L226 Difference]: Without dead ends: 15793 [2022-03-03 19:38:27,382 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6018 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=2248, Invalid=15308, Unknown=0, NotChecked=0, Total=17556 [2022-03-03 19:38:27,382 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 477 mSDsluCounter, 2255 mSDsCounter, 0 mSdLazyCounter, 1521 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 1794 SdHoareTripleChecker+Invalid, 1988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 1521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 320 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-03 19:38:27,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [477 Valid, 1794 Invalid, 1988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 1521 Invalid, 0 Unknown, 320 Unchecked, 0.9s Time] [2022-03-03 19:38:27,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15793 states. [2022-03-03 19:38:27,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15793 to 8514. [2022-03-03 19:38:27,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8514 states, 8513 states have (on average 2.3016562903794195) internal successors, (19594), 8513 states have internal predecessors, (19594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:38:27,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8514 states to 8514 states and 19594 transitions. [2022-03-03 19:38:27,526 INFO L78 Accepts]: Start accepts. Automaton has 8514 states and 19594 transitions. Word has length 39 [2022-03-03 19:38:27,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:38:27,526 INFO L470 AbstractCegarLoop]: Abstraction has 8514 states and 19594 transitions. [2022-03-03 19:38:27,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.2954545454545454) internal successors, (101), 43 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:38:27,526 INFO L276 IsEmpty]: Start isEmpty. Operand 8514 states and 19594 transitions. [2022-03-03 19:38:27,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-03 19:38:27,530 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:38:27,530 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:38:27,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2022-03-03 19:38:27,732 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,SelfDestructingSolverStorable78 [2022-03-03 19:38:27,732 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:38:27,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:38:27,732 INFO L85 PathProgramCache]: Analyzing trace with hash 92736402, now seen corresponding path program 74 times [2022-03-03 19:38:27,732 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:38:27,732 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903059620] [2022-03-03 19:38:27,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:38:27,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:38:27,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:38:28,037 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:38:28,038 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:38:28,038 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903059620] [2022-03-03 19:38:28,038 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903059620] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:38:28,038 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831627296] [2022-03-03 19:38:28,038 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:38:28,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:38:28,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:38:28,039 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:38:28,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-03-03 19:38:28,061 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:38:28,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:38:28,062 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 57 conjunts are in the unsatisfiable core [2022-03-03 19:38:28,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:38:28,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:28,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:28,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:28,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:28,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:28,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:28,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:28,891 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:28,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:28,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:28,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:28,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:28,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:28,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:28,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:28,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:28,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:28,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:28,897 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:28,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:28,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:28,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:28,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:28,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:28,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:28,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:28,902 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:28,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:28,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:28,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:28,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:28,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:28,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:28,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:28,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:28,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:28,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:28,908 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:28,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:28,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:28,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:28,910 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:28,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:28,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:28,911 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:28,912 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 21 disjoint index pairs (out of 78 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 44 [2022-03-03 19:38:28,931 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 2 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:38:28,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:38:29,927 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-03-03 19:38:29,928 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 130 treesize of output 528 [2022-03-03 19:38:31,101 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 12 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:38:31,101 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831627296] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:38:31,101 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:38:31,101 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 17] total 43 [2022-03-03 19:38:31,101 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563923349] [2022-03-03 19:38:31,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:38:31,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-03-03 19:38:31,102 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:38:31,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-03-03 19:38:31,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=279, Invalid=1613, Unknown=0, NotChecked=0, Total=1892 [2022-03-03 19:38:31,102 INFO L87 Difference]: Start difference. First operand 8514 states and 19594 transitions. Second operand has 44 states, 44 states have (on average 2.2954545454545454) internal successors, (101), 43 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:38:35,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:38:35,178 INFO L93 Difference]: Finished difference Result 15092 states and 34042 transitions. [2022-03-03 19:38:35,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2022-03-03 19:38:35,178 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.2954545454545454) internal successors, (101), 43 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-03-03 19:38:35,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:38:35,201 INFO L225 Difference]: With dead ends: 15092 [2022-03-03 19:38:35,201 INFO L226 Difference]: Without dead ends: 15016 [2022-03-03 19:38:35,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7126 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=2588, Invalid=17434, Unknown=0, NotChecked=0, Total=20022 [2022-03-03 19:38:35,203 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 376 mSDsluCounter, 2649 mSDsCounter, 0 mSdLazyCounter, 1711 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 2612 SdHoareTripleChecker+Invalid, 2255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 433 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-03 19:38:35,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [376 Valid, 2612 Invalid, 2255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1711 Invalid, 0 Unknown, 433 Unchecked, 1.0s Time] [2022-03-03 19:38:35,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15016 states. [2022-03-03 19:38:35,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15016 to 8421. [2022-03-03 19:38:35,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8421 states, 8420 states have (on average 2.3) internal successors, (19366), 8420 states have internal predecessors, (19366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:38:35,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8421 states to 8421 states and 19366 transitions. [2022-03-03 19:38:35,357 INFO L78 Accepts]: Start accepts. Automaton has 8421 states and 19366 transitions. Word has length 39 [2022-03-03 19:38:35,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:38:35,358 INFO L470 AbstractCegarLoop]: Abstraction has 8421 states and 19366 transitions. [2022-03-03 19:38:35,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.2954545454545454) internal successors, (101), 43 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:38:35,358 INFO L276 IsEmpty]: Start isEmpty. Operand 8421 states and 19366 transitions. [2022-03-03 19:38:35,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-03 19:38:35,362 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:38:35,362 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:38:35,378 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2022-03-03 19:38:35,566 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,SelfDestructingSolverStorable79 [2022-03-03 19:38:35,567 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:38:35,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:38:35,568 INFO L85 PathProgramCache]: Analyzing trace with hash -701560062, now seen corresponding path program 75 times [2022-03-03 19:38:35,568 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:38:35,568 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475292991] [2022-03-03 19:38:35,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:38:35,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:38:35,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:38:35,899 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:38:35,899 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:38:35,899 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475292991] [2022-03-03 19:38:35,899 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475292991] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:38:35,900 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205905998] [2022-03-03 19:38:35,900 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:38:35,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:38:35,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:38:35,901 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:38:35,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-03-03 19:38:35,925 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-03-03 19:38:35,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:38:35,926 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 57 conjunts are in the unsatisfiable core [2022-03-03 19:38:35,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:38:36,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:36,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:36,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:36,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:36,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:36,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:36,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:36,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:36,516 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:36,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:36,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:36,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:36,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:36,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:36,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:36,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:36,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:36,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:36,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:36,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:36,521 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:36,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:36,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:36,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:36,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:36,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:36,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:36,523 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:36,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:36,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:36,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:36,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:36,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:36,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:36,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:36,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:36,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:36,527 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:36,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:36,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:36,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:36,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:36,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:36,529 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:36,529 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:36,534 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 21 disjoint index pairs (out of 78 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 44 [2022-03-03 19:38:36,546 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 2 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:38:36,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:38:37,519 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-03-03 19:38:37,520 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 130 treesize of output 528 [2022-03-03 19:38:39,490 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 3 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:38:39,491 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205905998] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:38:39,491 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:38:39,491 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 17] total 41 [2022-03-03 19:38:39,491 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597539352] [2022-03-03 19:38:39,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:38:39,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-03-03 19:38:39,498 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:38:39,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-03-03 19:38:39,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=1424, Unknown=0, NotChecked=0, Total=1722 [2022-03-03 19:38:39,499 INFO L87 Difference]: Start difference. First operand 8421 states and 19366 transitions. Second operand has 42 states, 42 states have (on average 2.4047619047619047) internal successors, (101), 41 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:38:41,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:38:41,827 INFO L93 Difference]: Finished difference Result 12776 states and 28757 transitions. [2022-03-03 19:38:41,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-03-03 19:38:41,828 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.4047619047619047) internal successors, (101), 41 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-03-03 19:38:41,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:38:41,846 INFO L225 Difference]: With dead ends: 12776 [2022-03-03 19:38:41,846 INFO L226 Difference]: Without dead ends: 12264 [2022-03-03 19:38:41,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 50 SyntacticMatches, 3 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1683 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=750, Invalid=4800, Unknown=0, NotChecked=0, Total=5550 [2022-03-03 19:38:41,858 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 648 mSDsluCounter, 2204 mSDsCounter, 0 mSdLazyCounter, 1491 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 648 SdHoareTripleChecker+Valid, 1587 SdHoareTripleChecker+Invalid, 1800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 1491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 148 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-03 19:38:41,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [648 Valid, 1587 Invalid, 1800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 1491 Invalid, 0 Unknown, 148 Unchecked, 0.9s Time] [2022-03-03 19:38:41,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12264 states. [2022-03-03 19:38:42,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12264 to 9219. [2022-03-03 19:38:42,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9219 states, 9218 states have (on average 2.305272293339119) internal successors, (21250), 9218 states have internal predecessors, (21250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:38:42,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9219 states to 9219 states and 21250 transitions. [2022-03-03 19:38:42,025 INFO L78 Accepts]: Start accepts. Automaton has 9219 states and 21250 transitions. Word has length 39 [2022-03-03 19:38:42,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:38:42,025 INFO L470 AbstractCegarLoop]: Abstraction has 9219 states and 21250 transitions. [2022-03-03 19:38:42,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.4047619047619047) internal successors, (101), 41 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:38:42,025 INFO L276 IsEmpty]: Start isEmpty. Operand 9219 states and 21250 transitions. [2022-03-03 19:38:42,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-03 19:38:42,030 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:38:42,030 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:38:42,046 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2022-03-03 19:38:42,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:38:42,243 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:38:42,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:38:42,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1714264178, now seen corresponding path program 76 times [2022-03-03 19:38:42,244 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:38:42,244 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078318358] [2022-03-03 19:38:42,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:38:42,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:38:42,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:38:42,549 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:38:42,549 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:38:42,549 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078318358] [2022-03-03 19:38:42,549 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078318358] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:38:42,549 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314110458] [2022-03-03 19:38:42,549 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:38:42,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:38:42,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:38:42,551 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:38:42,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-03-03 19:38:42,579 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:38:42,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:38:42,581 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 57 conjunts are in the unsatisfiable core [2022-03-03 19:38:42,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:38:43,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:43,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:43,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:43,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:43,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:43,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:43,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:43,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:43,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:43,191 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:43,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:43,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:43,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:43,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:43,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:43,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:43,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:43,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:43,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:43,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:43,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:43,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:43,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:43,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:43,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:43,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:43,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:43,198 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:43,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:43,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:43,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:43,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:43,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:43,200 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:43,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:43,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:43,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:43,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:43,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:43,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:43,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:43,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:43,204 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:43,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:43,204 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:43,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:43,205 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:43,205 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 21 disjoint index pairs (out of 78 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 44 [2022-03-03 19:38:43,218 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:38:43,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:38:44,229 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-03-03 19:38:44,229 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 130 treesize of output 528 [2022-03-03 19:38:45,411 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 3 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:38:45,411 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314110458] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:38:45,411 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:38:45,411 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 17] total 43 [2022-03-03 19:38:45,411 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570670459] [2022-03-03 19:38:45,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:38:45,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-03-03 19:38:45,412 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:38:45,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-03-03 19:38:45,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=1607, Unknown=0, NotChecked=0, Total=1892 [2022-03-03 19:38:45,412 INFO L87 Difference]: Start difference. First operand 9219 states and 21250 transitions. Second operand has 44 states, 44 states have (on average 2.2954545454545454) internal successors, (101), 43 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:38:48,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:38:48,424 INFO L93 Difference]: Finished difference Result 17075 states and 38717 transitions. [2022-03-03 19:38:48,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-03-03 19:38:48,433 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.2954545454545454) internal successors, (101), 43 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-03-03 19:38:48,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:38:48,460 INFO L225 Difference]: With dead ends: 17075 [2022-03-03 19:38:48,460 INFO L226 Difference]: Without dead ends: 16524 [2022-03-03 19:38:48,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3669 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1654, Invalid=9902, Unknown=0, NotChecked=0, Total=11556 [2022-03-03 19:38:48,461 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 595 mSDsluCounter, 2322 mSDsCounter, 0 mSdLazyCounter, 1487 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 1539 SdHoareTripleChecker+Invalid, 2079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 1487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 425 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 19:38:48,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [595 Valid, 1539 Invalid, 2079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 1487 Invalid, 0 Unknown, 425 Unchecked, 0.8s Time] [2022-03-03 19:38:48,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16524 states. [2022-03-03 19:38:48,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16524 to 7396. [2022-03-03 19:38:48,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7396 states, 7395 states have (on average 2.2580121703853955) internal successors, (16698), 7395 states have internal predecessors, (16698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:38:48,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7396 states to 7396 states and 16698 transitions. [2022-03-03 19:38:48,619 INFO L78 Accepts]: Start accepts. Automaton has 7396 states and 16698 transitions. Word has length 39 [2022-03-03 19:38:48,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:38:48,619 INFO L470 AbstractCegarLoop]: Abstraction has 7396 states and 16698 transitions. [2022-03-03 19:38:48,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.2954545454545454) internal successors, (101), 43 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:38:48,619 INFO L276 IsEmpty]: Start isEmpty. Operand 7396 states and 16698 transitions. [2022-03-03 19:38:48,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-03 19:38:48,623 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:38:48,623 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:38:48,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2022-03-03 19:38:48,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:38:48,836 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:38:48,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:38:48,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1206229246, now seen corresponding path program 77 times [2022-03-03 19:38:48,837 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:38:48,837 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919561199] [2022-03-03 19:38:48,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:38:48,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:38:48,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:38:49,112 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:38:49,112 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:38:49,112 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919561199] [2022-03-03 19:38:49,112 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919561199] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:38:49,113 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853980391] [2022-03-03 19:38:49,113 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:38:49,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:38:49,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:38:49,114 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:38:49,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-03-03 19:38:49,144 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-03-03 19:38:49,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:38:49,149 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 57 conjunts are in the unsatisfiable core [2022-03-03 19:38:49,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:38:56,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:56,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:56,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:56,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:56,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:56,123 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:56,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:56,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:56,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:56,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:56,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:56,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:56,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:56,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:56,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:56,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:56,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:56,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:56,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:56,131 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:56,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:56,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:56,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:56,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:56,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:56,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:56,134 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:56,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:56,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:56,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:56,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:56,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:56,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:56,138 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:56,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:56,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:56,140 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:56,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:56,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:56,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:56,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:38:56,143 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:56,143 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 21 disjoint index pairs (out of 78 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 44 [2022-03-03 19:38:56,163 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:38:56,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:38:58,255 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:58,255 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:58,256 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:58,256 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:58,256 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:58,256 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:58,257 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:58,257 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:58,258 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:58,258 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:58,258 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:58,259 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:58,259 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:58,261 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:58,261 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:58,261 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:58,263 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:58,263 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:58,263 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:58,263 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:58,264 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:58,265 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:58,265 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:58,265 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:58,266 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:58,267 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:58,267 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:58,267 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:58,268 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:58,269 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:58,270 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:58,270 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:58,270 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:58,271 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:58,271 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:58,272 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:58,273 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:58,273 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:58,273 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:58,274 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:58,275 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:58,275 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:58,275 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:58,276 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:58,276 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:58,277 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:58,277 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:58,277 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:58,277 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:58,277 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:58,278 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:58,279 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:58,279 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:58,279 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:58,280 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:58,280 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:58,280 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:38:58,457 INFO L353 Elim1Store]: treesize reduction 83, result has 77.1 percent of original size [2022-03-03 19:38:58,458 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 57 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 34 case distinctions, treesize of input 124 treesize of output 331 [2022-03-03 19:38:59,313 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:38:59,313 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853980391] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:38:59,313 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:38:59,313 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 17] total 44 [2022-03-03 19:38:59,313 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588496946] [2022-03-03 19:38:59,313 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:38:59,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-03-03 19:38:59,314 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:38:59,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-03-03 19:38:59,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=372, Invalid=1608, Unknown=0, NotChecked=0, Total=1980 [2022-03-03 19:38:59,314 INFO L87 Difference]: Start difference. First operand 7396 states and 16698 transitions. Second operand has 45 states, 45 states have (on average 2.2666666666666666) internal successors, (102), 44 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:39:06,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:39:06,877 INFO L93 Difference]: Finished difference Result 8120 states and 18145 transitions. [2022-03-03 19:39:06,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-03 19:39:06,877 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.2666666666666666) internal successors, (102), 44 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-03-03 19:39:06,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:39:06,889 INFO L225 Difference]: With dead ends: 8120 [2022-03-03 19:39:06,889 INFO L226 Difference]: Without dead ends: 8107 [2022-03-03 19:39:06,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 62 SyntacticMatches, 3 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1194 ImplicationChecksByTransitivity, 14.7s TimeCoverageRelationStatistics Valid=681, Invalid=3609, Unknown=0, NotChecked=0, Total=4290 [2022-03-03 19:39:06,890 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 272 mSDsluCounter, 1079 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 1076 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 452 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 19:39:06,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 1076 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 124 Invalid, 0 Unknown, 452 Unchecked, 0.0s Time] [2022-03-03 19:39:06,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8107 states. [2022-03-03 19:39:06,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8107 to 7707. [2022-03-03 19:39:06,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7707 states, 7706 states have (on average 2.252011419672982) internal successors, (17354), 7706 states have internal predecessors, (17354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:39:06,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7707 states to 7707 states and 17354 transitions. [2022-03-03 19:39:06,985 INFO L78 Accepts]: Start accepts. Automaton has 7707 states and 17354 transitions. Word has length 39 [2022-03-03 19:39:06,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:39:06,985 INFO L470 AbstractCegarLoop]: Abstraction has 7707 states and 17354 transitions. [2022-03-03 19:39:06,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.2666666666666666) internal successors, (102), 44 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:39:06,985 INFO L276 IsEmpty]: Start isEmpty. Operand 7707 states and 17354 transitions. [2022-03-03 19:39:06,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-03 19:39:06,989 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:39:06,990 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:39:07,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2022-03-03 19:39:07,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable82 [2022-03-03 19:39:07,191 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:39:07,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:39:07,192 INFO L85 PathProgramCache]: Analyzing trace with hash -788654638, now seen corresponding path program 78 times [2022-03-03 19:39:07,192 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:39:07,192 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355312307] [2022-03-03 19:39:07,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:39:07,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:39:07,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:39:07,544 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:39:07,544 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:39:07,544 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355312307] [2022-03-03 19:39:07,544 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355312307] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:39:07,544 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907242259] [2022-03-03 19:39:07,544 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:39:07,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:39:07,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:39:07,545 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:39:07,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-03-03 19:39:07,571 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-03-03 19:39:07,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:39:07,572 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 59 conjunts are in the unsatisfiable core [2022-03-03 19:39:07,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:39:08,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:08,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:08,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:08,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:08,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:08,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:08,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:08,276 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:08,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:08,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:08,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:08,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:08,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:08,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:08,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:08,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:08,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:08,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:08,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:08,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:08,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:08,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:08,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:08,282 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:08,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:08,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:08,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:08,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:08,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:08,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:08,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:08,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:08,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:08,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:08,286 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:08,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:08,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:08,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:08,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:08,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:08,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:08,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:08,289 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:08,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:08,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:08,290 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:08,291 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:08,291 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 21 disjoint index pairs (out of 78 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 44 [2022-03-03 19:39:08,303 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:39:08,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:39:09,374 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-03-03 19:39:09,375 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 130 treesize of output 528 [2022-03-03 19:39:11,159 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 6 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:39:11,160 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907242259] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:39:11,160 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:39:11,160 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 44 [2022-03-03 19:39:11,160 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249503220] [2022-03-03 19:39:11,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:39:11,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-03-03 19:39:11,160 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:39:11,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-03-03 19:39:11,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=294, Invalid=1686, Unknown=0, NotChecked=0, Total=1980 [2022-03-03 19:39:11,161 INFO L87 Difference]: Start difference. First operand 7707 states and 17354 transitions. Second operand has 45 states, 45 states have (on average 2.2444444444444445) internal successors, (101), 44 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:39:12,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:39:12,885 INFO L93 Difference]: Finished difference Result 12919 states and 29043 transitions. [2022-03-03 19:39:12,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-03-03 19:39:12,886 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.2444444444444445) internal successors, (101), 44 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-03-03 19:39:12,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:39:12,904 INFO L225 Difference]: With dead ends: 12919 [2022-03-03 19:39:12,905 INFO L226 Difference]: Without dead ends: 12834 [2022-03-03 19:39:12,905 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2495 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1255, Invalid=6935, Unknown=0, NotChecked=0, Total=8190 [2022-03-03 19:39:12,906 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 324 mSDsluCounter, 1115 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 1075 SdHoareTripleChecker+Invalid, 1005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 176 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 19:39:12,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [324 Valid, 1075 Invalid, 1005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 732 Invalid, 0 Unknown, 176 Unchecked, 0.4s Time] [2022-03-03 19:39:12,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12834 states. [2022-03-03 19:39:12,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12834 to 5357. [2022-03-03 19:39:12,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5357 states, 5356 states have (on average 2.251493651979089) internal successors, (12059), 5356 states have internal predecessors, (12059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:39:13,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5357 states to 5357 states and 12059 transitions. [2022-03-03 19:39:13,005 INFO L78 Accepts]: Start accepts. Automaton has 5357 states and 12059 transitions. Word has length 39 [2022-03-03 19:39:13,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:39:13,005 INFO L470 AbstractCegarLoop]: Abstraction has 5357 states and 12059 transitions. [2022-03-03 19:39:13,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.2444444444444445) internal successors, (101), 44 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:39:13,005 INFO L276 IsEmpty]: Start isEmpty. Operand 5357 states and 12059 transitions. [2022-03-03 19:39:13,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-03 19:39:13,009 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:39:13,009 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:39:13,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2022-03-03 19:39:13,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:39:13,223 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:39:13,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:39:13,224 INFO L85 PathProgramCache]: Analyzing trace with hash 2087414082, now seen corresponding path program 79 times [2022-03-03 19:39:13,224 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:39:13,224 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184548796] [2022-03-03 19:39:13,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:39:13,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:39:13,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:39:13,537 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:39:13,537 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:39:13,537 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184548796] [2022-03-03 19:39:13,537 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184548796] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:39:13,537 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241166111] [2022-03-03 19:39:13,537 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:39:13,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:39:13,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:39:13,538 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:39:13,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-03-03 19:39:13,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:39:13,561 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 57 conjunts are in the unsatisfiable core [2022-03-03 19:39:13,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:39:14,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:14,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:14,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:14,404 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:14,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:14,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:14,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:14,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:14,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:14,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:14,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:14,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:14,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:14,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:14,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:14,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:14,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:14,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:14,412 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:14,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:14,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:14,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:14,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:14,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:14,415 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:14,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:14,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:14,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:14,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:14,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:14,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:14,423 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:14,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:14,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:14,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:14,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:14,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:14,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:14,427 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:14,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:14,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:14,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:14,428 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:14,429 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 21 disjoint index pairs (out of 78 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 44 [2022-03-03 19:39:14,447 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 2 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:39:14,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:39:15,622 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-03-03 19:39:15,622 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 130 treesize of output 528 [2022-03-03 19:39:17,296 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 6 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:39:17,296 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241166111] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:39:17,296 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:39:17,296 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 17] total 42 [2022-03-03 19:39:17,296 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047357534] [2022-03-03 19:39:17,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:39:17,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-03-03 19:39:17,296 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:39:17,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-03-03 19:39:17,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=1497, Unknown=0, NotChecked=0, Total=1806 [2022-03-03 19:39:17,297 INFO L87 Difference]: Start difference. First operand 5357 states and 12059 transitions. Second operand has 43 states, 43 states have (on average 2.3488372093023258) internal successors, (101), 42 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:39:19,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:39:19,402 INFO L93 Difference]: Finished difference Result 8956 states and 19765 transitions. [2022-03-03 19:39:19,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-03-03 19:39:19,402 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.3488372093023258) internal successors, (101), 42 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-03-03 19:39:19,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:39:19,413 INFO L225 Difference]: With dead ends: 8956 [2022-03-03 19:39:19,413 INFO L226 Difference]: Without dead ends: 8462 [2022-03-03 19:39:19,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 49 SyntacticMatches, 3 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1804 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=896, Invalid=4956, Unknown=0, NotChecked=0, Total=5852 [2022-03-03 19:39:19,414 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 672 mSDsluCounter, 2345 mSDsCounter, 0 mSdLazyCounter, 1605 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 672 SdHoareTripleChecker+Valid, 1642 SdHoareTripleChecker+Invalid, 1881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 119 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 19:39:19,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [672 Valid, 1642 Invalid, 1881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1605 Invalid, 0 Unknown, 119 Unchecked, 0.8s Time] [2022-03-03 19:39:19,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8462 states. [2022-03-03 19:39:19,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8462 to 5762. [2022-03-03 19:39:19,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5762 states, 5761 states have (on average 2.2617601110918244) internal successors, (13030), 5761 states have internal predecessors, (13030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:39:19,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5762 states to 5762 states and 13030 transitions. [2022-03-03 19:39:19,491 INFO L78 Accepts]: Start accepts. Automaton has 5762 states and 13030 transitions. Word has length 39 [2022-03-03 19:39:19,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:39:19,491 INFO L470 AbstractCegarLoop]: Abstraction has 5762 states and 13030 transitions. [2022-03-03 19:39:19,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.3488372093023258) internal successors, (101), 42 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:39:19,492 INFO L276 IsEmpty]: Start isEmpty. Operand 5762 states and 13030 transitions. [2022-03-03 19:39:19,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-03 19:39:19,495 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:39:19,495 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:39:19,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2022-03-03 19:39:19,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:39:19,699 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:39:19,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:39:19,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1582744898, now seen corresponding path program 80 times [2022-03-03 19:39:19,700 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:39:19,700 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962721988] [2022-03-03 19:39:19,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:39:19,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:39:19,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:39:19,981 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:39:19,981 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:39:19,981 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962721988] [2022-03-03 19:39:19,981 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962721988] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:39:19,981 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688328781] [2022-03-03 19:39:19,981 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:39:19,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:39:19,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:39:19,982 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:39:19,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-03-03 19:39:20,006 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:39:20,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:39:20,006 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 57 conjunts are in the unsatisfiable core [2022-03-03 19:39:20,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:39:20,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:20,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:20,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:20,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:20,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:20,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:20,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:20,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:20,703 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:20,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:20,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:20,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:20,705 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:20,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:20,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:20,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:20,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:20,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:20,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:20,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:20,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:20,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:20,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:20,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:20,711 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:20,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:20,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:20,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:20,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:20,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:20,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:20,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:20,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:20,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:20,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:20,718 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:20,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:20,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:20,719 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:20,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:20,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:20,721 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:20,721 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 21 disjoint index pairs (out of 78 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 44 [2022-03-03 19:39:20,742 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:39:20,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:39:21,844 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-03-03 19:39:21,845 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 130 treesize of output 528 [2022-03-03 19:39:22,992 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 6 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:39:22,992 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688328781] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:39:22,992 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:39:22,992 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 44 [2022-03-03 19:39:22,992 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024738682] [2022-03-03 19:39:22,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:39:22,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-03-03 19:39:22,993 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:39:22,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-03-03 19:39:22,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=1678, Unknown=0, NotChecked=0, Total=1980 [2022-03-03 19:39:22,994 INFO L87 Difference]: Start difference. First operand 5762 states and 13030 transitions. Second operand has 45 states, 45 states have (on average 2.2444444444444445) internal successors, (101), 44 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:39:24,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:39:24,867 INFO L93 Difference]: Finished difference Result 8582 states and 19068 transitions. [2022-03-03 19:39:24,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-03-03 19:39:24,868 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.2444444444444445) internal successors, (101), 44 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-03-03 19:39:24,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:39:24,878 INFO L225 Difference]: With dead ends: 8582 [2022-03-03 19:39:24,878 INFO L226 Difference]: Without dead ends: 8540 [2022-03-03 19:39:24,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2557 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1273, Invalid=7099, Unknown=0, NotChecked=0, Total=8372 [2022-03-03 19:39:24,879 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 350 mSDsluCounter, 1484 mSDsCounter, 0 mSdLazyCounter, 947 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 1383 SdHoareTripleChecker+Invalid, 1345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 303 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 19:39:24,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [350 Valid, 1383 Invalid, 1345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 947 Invalid, 0 Unknown, 303 Unchecked, 0.5s Time] [2022-03-03 19:39:24,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8540 states. [2022-03-03 19:39:24,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8540 to 6098. [2022-03-03 19:39:24,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6098 states, 6097 states have (on average 2.264556339183205) internal successors, (13807), 6097 states have internal predecessors, (13807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:39:24,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6098 states to 6098 states and 13807 transitions. [2022-03-03 19:39:24,973 INFO L78 Accepts]: Start accepts. Automaton has 6098 states and 13807 transitions. Word has length 39 [2022-03-03 19:39:24,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:39:24,973 INFO L470 AbstractCegarLoop]: Abstraction has 6098 states and 13807 transitions. [2022-03-03 19:39:24,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.2444444444444445) internal successors, (101), 44 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:39:24,973 INFO L276 IsEmpty]: Start isEmpty. Operand 6098 states and 13807 transitions. [2022-03-03 19:39:24,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-03 19:39:24,976 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:39:24,977 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:39:24,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Forceful destruction successful, exit code 0 [2022-03-03 19:39:25,179 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,SelfDestructingSolverStorable85 [2022-03-03 19:39:25,179 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:39:25,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:39:25,180 INFO L85 PathProgramCache]: Analyzing trace with hash 976122898, now seen corresponding path program 81 times [2022-03-03 19:39:25,180 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:39:25,180 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2736395] [2022-03-03 19:39:25,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:39:25,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:39:25,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:39:25,452 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:39:25,453 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:39:25,454 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2736395] [2022-03-03 19:39:25,454 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2736395] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:39:25,455 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470322077] [2022-03-03 19:39:25,455 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:39:25,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:39:25,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:39:25,456 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:39:25,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-03-03 19:39:25,480 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-03-03 19:39:25,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:39:25,481 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 57 conjunts are in the unsatisfiable core [2022-03-03 19:39:25,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:39:26,286 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:26,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:26,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:26,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:26,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:26,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:26,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:26,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:26,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:26,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:26,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:26,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:26,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:26,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:26,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:26,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:26,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:26,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:26,293 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:26,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:26,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:26,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:26,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:26,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:26,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:26,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:26,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:26,296 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:26,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:26,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:26,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:26,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:26,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:26,299 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:26,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:26,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:26,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:26,300 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:26,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:26,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:26,301 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:26,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:26,301 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 21 disjoint index pairs (out of 78 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 44 [2022-03-03 19:39:26,314 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 2 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:39:26,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:39:27,536 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-03-03 19:39:27,537 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 130 treesize of output 528 [2022-03-03 19:39:28,963 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 12 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:39:28,964 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470322077] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:39:28,964 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:39:28,964 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 17] total 42 [2022-03-03 19:39:28,964 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596065087] [2022-03-03 19:39:28,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:39:28,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-03-03 19:39:28,964 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:39:28,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-03-03 19:39:28,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=1498, Unknown=0, NotChecked=0, Total=1806 [2022-03-03 19:39:28,964 INFO L87 Difference]: Start difference. First operand 6098 states and 13807 transitions. Second operand has 43 states, 43 states have (on average 2.3488372093023258) internal successors, (101), 42 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:39:30,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:39:30,895 INFO L93 Difference]: Finished difference Result 8931 states and 19767 transitions. [2022-03-03 19:39:30,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-03-03 19:39:30,895 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.3488372093023258) internal successors, (101), 42 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-03-03 19:39:30,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:39:30,907 INFO L225 Difference]: With dead ends: 8931 [2022-03-03 19:39:30,907 INFO L226 Difference]: Without dead ends: 8486 [2022-03-03 19:39:30,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 49 SyntacticMatches, 3 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1569 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=789, Invalid=4467, Unknown=0, NotChecked=0, Total=5256 [2022-03-03 19:39:30,908 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 569 mSDsluCounter, 2331 mSDsCounter, 0 mSdLazyCounter, 1603 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 1626 SdHoareTripleChecker+Invalid, 1905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 173 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-03 19:39:30,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [569 Valid, 1626 Invalid, 1905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1603 Invalid, 0 Unknown, 173 Unchecked, 0.9s Time] [2022-03-03 19:39:30,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8486 states. [2022-03-03 19:39:30,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8486 to 6743. [2022-03-03 19:39:30,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6743 states, 6742 states have (on average 2.262681696825868) internal successors, (15255), 6742 states have internal predecessors, (15255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:39:30,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6743 states to 6743 states and 15255 transitions. [2022-03-03 19:39:30,994 INFO L78 Accepts]: Start accepts. Automaton has 6743 states and 15255 transitions. Word has length 39 [2022-03-03 19:39:30,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:39:30,994 INFO L470 AbstractCegarLoop]: Abstraction has 6743 states and 15255 transitions. [2022-03-03 19:39:30,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.3488372093023258) internal successors, (101), 42 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:39:30,994 INFO L276 IsEmpty]: Start isEmpty. Operand 6743 states and 15255 transitions. [2022-03-03 19:39:30,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-03 19:39:30,997 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:39:30,997 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:39:31,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2022-03-03 19:39:31,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:39:31,213 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:39:31,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:39:31,213 INFO L85 PathProgramCache]: Analyzing trace with hash 2100683282, now seen corresponding path program 82 times [2022-03-03 19:39:31,213 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:39:31,213 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871984409] [2022-03-03 19:39:31,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:39:31,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:39:31,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:39:31,530 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:39:31,530 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:39:31,530 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871984409] [2022-03-03 19:39:31,530 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871984409] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:39:31,530 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934001083] [2022-03-03 19:39:31,530 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:39:31,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:39:31,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:39:31,531 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:39:31,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-03-03 19:39:31,555 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:39:31,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:39:31,556 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 57 conjunts are in the unsatisfiable core [2022-03-03 19:39:31,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:39:32,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:32,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:32,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:32,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:32,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:32,420 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:32,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:32,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:32,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:32,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:32,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:32,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:32,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:32,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:32,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:32,426 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:32,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:32,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:32,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:32,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:32,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:32,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:32,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:32,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:32,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:32,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:32,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:32,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:32,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:32,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:32,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:32,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:32,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:32,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:32,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:32,437 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:32,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:32,438 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:32,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:32,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:32,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:32,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:32,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:32,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:32,442 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:32,442 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:32,443 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 21 disjoint index pairs (out of 78 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 44 [2022-03-03 19:39:32,462 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:39:32,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:39:33,802 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-03-03 19:39:33,802 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 130 treesize of output 528 [2022-03-03 19:39:35,027 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 12 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:39:35,028 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934001083] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:39:35,028 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:39:35,028 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 17] total 43 [2022-03-03 19:39:35,028 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588131004] [2022-03-03 19:39:35,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:39:35,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-03-03 19:39:35,029 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:39:35,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-03-03 19:39:35,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=1587, Unknown=0, NotChecked=0, Total=1892 [2022-03-03 19:39:35,029 INFO L87 Difference]: Start difference. First operand 6743 states and 15255 transitions. Second operand has 44 states, 44 states have (on average 2.2954545454545454) internal successors, (101), 43 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:39:37,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:39:37,130 INFO L93 Difference]: Finished difference Result 12342 states and 27425 transitions. [2022-03-03 19:39:37,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-03-03 19:39:37,130 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.2954545454545454) internal successors, (101), 43 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-03-03 19:39:37,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:39:37,145 INFO L225 Difference]: With dead ends: 12342 [2022-03-03 19:39:37,145 INFO L226 Difference]: Without dead ends: 12080 [2022-03-03 19:39:37,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 49 SyntacticMatches, 3 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2179 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1068, Invalid=6414, Unknown=0, NotChecked=0, Total=7482 [2022-03-03 19:39:37,146 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 437 mSDsluCounter, 1524 mSDsCounter, 0 mSdLazyCounter, 1032 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 1278 SdHoareTripleChecker+Invalid, 1391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 228 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 19:39:37,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [437 Valid, 1278 Invalid, 1391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1032 Invalid, 0 Unknown, 228 Unchecked, 0.6s Time] [2022-03-03 19:39:37,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12080 states. [2022-03-03 19:39:37,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12080 to 6527. [2022-03-03 19:39:37,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6527 states, 6526 states have (on average 2.265093472264787) internal successors, (14782), 6526 states have internal predecessors, (14782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:39:37,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6527 states to 6527 states and 14782 transitions. [2022-03-03 19:39:37,261 INFO L78 Accepts]: Start accepts. Automaton has 6527 states and 14782 transitions. Word has length 39 [2022-03-03 19:39:37,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:39:37,261 INFO L470 AbstractCegarLoop]: Abstraction has 6527 states and 14782 transitions. [2022-03-03 19:39:37,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.2954545454545454) internal successors, (101), 43 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:39:37,261 INFO L276 IsEmpty]: Start isEmpty. Operand 6527 states and 14782 transitions. [2022-03-03 19:39:37,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-03 19:39:37,265 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:39:37,265 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:39:37,282 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2022-03-03 19:39:37,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:39:37,467 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:39:37,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:39:37,467 INFO L85 PathProgramCache]: Analyzing trace with hash 471453714, now seen corresponding path program 83 times [2022-03-03 19:39:37,467 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:39:37,467 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506625626] [2022-03-03 19:39:37,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:39:37,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:39:37,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:39:37,804 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:39:37,804 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:39:37,804 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506625626] [2022-03-03 19:39:37,804 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506625626] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:39:37,804 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560307435] [2022-03-03 19:39:37,804 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:39:37,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:39:37,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:39:37,805 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:39:37,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-03-03 19:39:37,833 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-03-03 19:39:37,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:39:37,834 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 59 conjunts are in the unsatisfiable core [2022-03-03 19:39:37,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:39:38,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:38,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:38,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:38,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:38,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:38,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:38,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:38,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:38,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:38,657 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:38,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:38,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:38,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:38,658 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:38,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:38,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:38,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:38,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:38,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:38,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:38,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:38,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:38,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:38,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:38,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:38,663 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:38,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:38,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:38,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:38,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:38,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:38,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:38,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:38,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:38,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:38,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:38,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:38,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:38,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:38,669 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:38,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:38,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:38,670 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:38,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:38,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:38,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:38,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:38,672 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:38,672 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:38,672 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 21 disjoint index pairs (out of 91 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 32 [2022-03-03 19:39:38,694 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:39:38,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:39:39,447 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:39,448 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:39,448 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:39,449 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:39,449 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:39,449 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:39,450 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:39,450 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:39,451 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:39,451 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:39,451 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:39,453 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:39,454 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:39,454 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:39,454 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:39,455 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:39,456 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:39,456 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:39,457 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:39,457 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:39,457 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:39,460 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:39,460 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:39,460 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:39,461 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:39,461 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:39,463 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:39,464 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:39,464 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:39,464 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:39,465 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:39,465 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:39,466 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:39,467 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:39,468 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:39,468 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:39,469 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:39,470 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:39,470 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:39,470 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:39,471 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:39,471 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:39,471 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:39,472 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:39,472 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:39,472 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:39,474 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:39,474 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:39,475 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:39,476 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:39,476 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:39,476 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:39,476 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:39,477 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:39,477 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:39,477 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:39,478 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:39,480 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:39,480 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:39,480 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:39,481 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:39,482 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:39,482 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:39,585 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:39:39,585 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 63 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 28 case distinctions, treesize of input 130 treesize of output 372 [2022-03-03 19:39:40,249 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:39:40,249 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560307435] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:39:40,249 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:39:40,249 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-03 19:39:40,249 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038795707] [2022-03-03 19:39:40,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:39:40,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-03 19:39:40,250 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:39:40,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-03 19:39:40,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=512, Invalid=1744, Unknown=0, NotChecked=0, Total=2256 [2022-03-03 19:39:40,250 INFO L87 Difference]: Start difference. First operand 6527 states and 14782 transitions. Second operand has 48 states, 48 states have (on average 2.25) internal successors, (108), 47 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:39:45,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:39:45,457 INFO L93 Difference]: Finished difference Result 9781 states and 21718 transitions. [2022-03-03 19:39:45,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-03-03 19:39:45,457 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.25) internal successors, (108), 47 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-03-03 19:39:45,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:39:45,488 INFO L225 Difference]: With dead ends: 9781 [2022-03-03 19:39:45,489 INFO L226 Difference]: Without dead ends: 9498 [2022-03-03 19:39:45,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4107 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=2153, Invalid=10729, Unknown=0, NotChecked=0, Total=12882 [2022-03-03 19:39:45,489 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 544 mSDsluCounter, 2064 mSDsCounter, 0 mSdLazyCounter, 1290 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 1667 SdHoareTripleChecker+Invalid, 1744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 1290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 274 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-03 19:39:45,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [544 Valid, 1667 Invalid, 1744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 1290 Invalid, 0 Unknown, 274 Unchecked, 0.9s Time] [2022-03-03 19:39:45,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9498 states. [2022-03-03 19:39:45,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9498 to 7128. [2022-03-03 19:39:45,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7128 states, 7127 states have (on average 2.267574014311772) internal successors, (16161), 7127 states have internal predecessors, (16161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:39:45,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7128 states to 7128 states and 16161 transitions. [2022-03-03 19:39:45,584 INFO L78 Accepts]: Start accepts. Automaton has 7128 states and 16161 transitions. Word has length 39 [2022-03-03 19:39:45,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:39:45,584 INFO L470 AbstractCegarLoop]: Abstraction has 7128 states and 16161 transitions. [2022-03-03 19:39:45,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.25) internal successors, (108), 47 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:39:45,585 INFO L276 IsEmpty]: Start isEmpty. Operand 7128 states and 16161 transitions. [2022-03-03 19:39:45,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-03 19:39:45,589 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:39:45,589 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:39:45,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2022-03-03 19:39:45,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2022-03-03 19:39:45,801 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:39:45,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:39:45,802 INFO L85 PathProgramCache]: Analyzing trace with hash 130470786, now seen corresponding path program 84 times [2022-03-03 19:39:45,802 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:39:45,802 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266197498] [2022-03-03 19:39:45,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:39:45,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:39:45,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:39:46,150 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:39:46,150 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:39:46,150 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266197498] [2022-03-03 19:39:46,150 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266197498] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:39:46,151 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255683050] [2022-03-03 19:39:46,151 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:39:46,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:39:46,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:39:46,152 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:39:46,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2022-03-03 19:39:46,177 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-03-03 19:39:46,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:39:46,178 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 59 conjunts are in the unsatisfiable core [2022-03-03 19:39:46,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:39:47,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:47,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:47,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:47,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:47,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:47,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:47,148 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:47,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:47,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:47,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:47,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:47,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:47,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:47,152 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:47,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:47,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:47,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:47,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:47,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:47,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:47,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:47,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:47,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:47,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:47,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:47,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:47,159 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:47,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:47,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:47,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:47,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:47,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:47,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:47,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:47,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:47,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:47,165 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:47,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:47,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:47,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:47,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:47,168 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:47,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:47,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:47,170 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:47,170 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 21 disjoint index pairs (out of 78 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 44 [2022-03-03 19:39:47,191 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:39:47,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:39:48,565 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-03-03 19:39:48,565 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 130 treesize of output 528 [2022-03-03 19:39:49,604 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 18 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:39:49,604 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255683050] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:39:49,604 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:39:49,604 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 44 [2022-03-03 19:39:49,604 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026071918] [2022-03-03 19:39:49,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:39:49,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-03-03 19:39:49,604 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:39:49,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-03-03 19:39:49,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=312, Invalid=1668, Unknown=0, NotChecked=0, Total=1980 [2022-03-03 19:39:49,605 INFO L87 Difference]: Start difference. First operand 7128 states and 16161 transitions. Second operand has 45 states, 45 states have (on average 2.2444444444444445) internal successors, (101), 44 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:39:51,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:39:51,294 INFO L93 Difference]: Finished difference Result 10175 states and 22746 transitions. [2022-03-03 19:39:51,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-03-03 19:39:51,295 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.2444444444444445) internal successors, (101), 44 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-03-03 19:39:51,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:39:51,314 INFO L225 Difference]: With dead ends: 10175 [2022-03-03 19:39:51,314 INFO L226 Difference]: Without dead ends: 10138 [2022-03-03 19:39:51,315 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1949 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=923, Invalid=6049, Unknown=0, NotChecked=0, Total=6972 [2022-03-03 19:39:51,315 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 344 mSDsluCounter, 1418 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 1392 SdHoareTripleChecker+Invalid, 1371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 310 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 19:39:51,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [344 Valid, 1392 Invalid, 1371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 973 Invalid, 0 Unknown, 310 Unchecked, 0.5s Time] [2022-03-03 19:39:51,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10138 states. [2022-03-03 19:39:51,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10138 to 7107. [2022-03-03 19:39:51,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7107 states, 7106 states have (on average 2.267098226850549) internal successors, (16110), 7106 states have internal predecessors, (16110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:39:51,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7107 states to 7107 states and 16110 transitions. [2022-03-03 19:39:51,430 INFO L78 Accepts]: Start accepts. Automaton has 7107 states and 16110 transitions. Word has length 39 [2022-03-03 19:39:51,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:39:51,430 INFO L470 AbstractCegarLoop]: Abstraction has 7107 states and 16110 transitions. [2022-03-03 19:39:51,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.2444444444444445) internal successors, (101), 44 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:39:51,430 INFO L276 IsEmpty]: Start isEmpty. Operand 7107 states and 16110 transitions. [2022-03-03 19:39:51,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-03 19:39:51,434 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:39:51,434 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:39:51,451 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Ended with exit code 0 [2022-03-03 19:39:51,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:39:51,650 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:39:51,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:39:51,650 INFO L85 PathProgramCache]: Analyzing trace with hash -2088252302, now seen corresponding path program 85 times [2022-03-03 19:39:51,650 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:39:51,650 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934360501] [2022-03-03 19:39:51,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:39:51,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:39:51,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:39:52,026 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:39:52,026 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:39:52,026 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934360501] [2022-03-03 19:39:52,026 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934360501] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:39:52,026 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359692824] [2022-03-03 19:39:52,026 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:39:52,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:39:52,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:39:52,027 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:39:52,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2022-03-03 19:39:52,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:39:52,050 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 57 conjunts are in the unsatisfiable core [2022-03-03 19:39:52,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:39:52,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:52,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:52,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:52,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:52,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:52,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:52,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:52,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:52,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:52,717 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:52,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:52,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:52,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:52,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:52,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:52,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:52,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:52,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:52,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:52,735 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:52,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:52,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:52,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:52,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:52,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:52,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:52,737 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:52,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:52,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:52,738 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:52,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:52,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:52,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:52,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:52,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:52,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:52,741 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:52,741 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 21 disjoint index pairs (out of 66 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 44 [2022-03-03 19:39:52,753 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:39:52,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:39:54,032 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-03-03 19:39:54,033 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 130 treesize of output 528 [2022-03-03 19:39:55,392 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 3 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:39:55,392 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359692824] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:39:55,392 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:39:55,392 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 43 [2022-03-03 19:39:55,392 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965594657] [2022-03-03 19:39:55,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:39:55,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-03-03 19:39:55,392 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:39:55,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-03-03 19:39:55,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=294, Invalid=1598, Unknown=0, NotChecked=0, Total=1892 [2022-03-03 19:39:55,393 INFO L87 Difference]: Start difference. First operand 7107 states and 16110 transitions. Second operand has 44 states, 44 states have (on average 2.227272727272727) internal successors, (98), 43 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:39:57,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:39:57,217 INFO L93 Difference]: Finished difference Result 13150 states and 29651 transitions. [2022-03-03 19:39:57,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-03-03 19:39:57,217 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.227272727272727) internal successors, (98), 43 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-03-03 19:39:57,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:39:57,233 INFO L225 Difference]: With dead ends: 13150 [2022-03-03 19:39:57,234 INFO L226 Difference]: Without dead ends: 12710 [2022-03-03 19:39:57,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 48 SyntacticMatches, 3 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2264 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1268, Invalid=6388, Unknown=0, NotChecked=0, Total=7656 [2022-03-03 19:39:57,234 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 472 mSDsluCounter, 1717 mSDsCounter, 0 mSdLazyCounter, 1048 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 1338 SdHoareTripleChecker+Invalid, 1534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 374 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 19:39:57,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [472 Valid, 1338 Invalid, 1534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1048 Invalid, 0 Unknown, 374 Unchecked, 0.5s Time] [2022-03-03 19:39:57,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12710 states. [2022-03-03 19:39:57,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12710 to 4841. [2022-03-03 19:39:57,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4841 states, 4840 states have (on average 2.2264462809917354) internal successors, (10776), 4840 states have internal predecessors, (10776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:39:57,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4841 states to 4841 states and 10776 transitions. [2022-03-03 19:39:57,324 INFO L78 Accepts]: Start accepts. Automaton has 4841 states and 10776 transitions. Word has length 39 [2022-03-03 19:39:57,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:39:57,324 INFO L470 AbstractCegarLoop]: Abstraction has 4841 states and 10776 transitions. [2022-03-03 19:39:57,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.227272727272727) internal successors, (98), 43 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:39:57,324 INFO L276 IsEmpty]: Start isEmpty. Operand 4841 states and 10776 transitions. [2022-03-03 19:39:57,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-03 19:39:57,337 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:39:57,337 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:39:57,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Forceful destruction successful, exit code 0 [2022-03-03 19:39:57,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:39:57,551 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:39:57,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:39:57,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1095423810, now seen corresponding path program 86 times [2022-03-03 19:39:57,552 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:39:57,552 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700069451] [2022-03-03 19:39:57,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:39:57,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:39:57,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:39:57,933 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:39:57,933 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:39:57,933 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700069451] [2022-03-03 19:39:57,933 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700069451] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:39:57,933 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912333879] [2022-03-03 19:39:57,933 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:39:57,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:39:57,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:39:57,934 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:39:57,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2022-03-03 19:39:57,956 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:39:57,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:39:57,957 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 57 conjunts are in the unsatisfiable core [2022-03-03 19:39:57,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:39:58,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:58,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:58,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:58,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:58,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:58,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:58,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:58,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:58,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:58,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:58,795 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:58,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:58,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:58,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:58,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:58,798 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:58,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:58,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:58,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:58,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:58,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:58,801 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:58,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:58,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:58,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:58,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:58,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:58,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:58,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:58,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:58,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:58,807 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:58,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:58,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:58,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:58,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:39:58,809 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:39:58,810 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 21 disjoint index pairs (out of 66 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 44 [2022-03-03 19:39:58,830 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:39:58,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:40:00,047 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-03-03 19:40:00,048 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 130 treesize of output 528 [2022-03-03 19:40:01,276 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 6 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:40:01,276 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912333879] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:40:01,276 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:40:01,276 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 43 [2022-03-03 19:40:01,276 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518944170] [2022-03-03 19:40:01,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:40:01,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-03-03 19:40:01,278 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:40:01,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-03-03 19:40:01,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=1593, Unknown=0, NotChecked=0, Total=1892 [2022-03-03 19:40:01,278 INFO L87 Difference]: Start difference. First operand 4841 states and 10776 transitions. Second operand has 44 states, 44 states have (on average 2.227272727272727) internal successors, (98), 43 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:40:04,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:40:04,462 INFO L93 Difference]: Finished difference Result 10258 states and 22574 transitions. [2022-03-03 19:40:04,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-03-03 19:40:04,462 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.227272727272727) internal successors, (98), 43 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-03-03 19:40:04,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:40:04,476 INFO L225 Difference]: With dead ends: 10258 [2022-03-03 19:40:04,476 INFO L226 Difference]: Without dead ends: 10072 [2022-03-03 19:40:04,477 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 52 SyntacticMatches, 3 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3504 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1882, Invalid=9890, Unknown=0, NotChecked=0, Total=11772 [2022-03-03 19:40:04,477 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 440 mSDsluCounter, 2125 mSDsCounter, 0 mSdLazyCounter, 1330 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 1861 SdHoareTripleChecker+Invalid, 2061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 621 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 19:40:04,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [440 Valid, 1861 Invalid, 2061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1330 Invalid, 0 Unknown, 621 Unchecked, 0.8s Time] [2022-03-03 19:40:04,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10072 states. [2022-03-03 19:40:04,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10072 to 4872. [2022-03-03 19:40:04,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4872 states, 4871 states have (on average 2.2311640320262778) internal successors, (10868), 4871 states have internal predecessors, (10868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:40:04,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4872 states to 4872 states and 10868 transitions. [2022-03-03 19:40:04,572 INFO L78 Accepts]: Start accepts. Automaton has 4872 states and 10868 transitions. Word has length 39 [2022-03-03 19:40:04,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:40:04,572 INFO L470 AbstractCegarLoop]: Abstraction has 4872 states and 10868 transitions. [2022-03-03 19:40:04,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.227272727272727) internal successors, (98), 43 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:40:04,572 INFO L276 IsEmpty]: Start isEmpty. Operand 4872 states and 10868 transitions. [2022-03-03 19:40:04,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-03 19:40:04,579 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:40:04,579 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:40:04,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Forceful destruction successful, exit code 0 [2022-03-03 19:40:04,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,89 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:40:04,795 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:40:04,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:40:04,796 INFO L85 PathProgramCache]: Analyzing trace with hash 754440882, now seen corresponding path program 87 times [2022-03-03 19:40:04,796 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:40:04,796 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154995045] [2022-03-03 19:40:04,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:40:04,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:40:04,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:40:05,056 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:40:05,056 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:40:05,056 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154995045] [2022-03-03 19:40:05,056 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154995045] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:40:05,056 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590582783] [2022-03-03 19:40:05,056 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:40:05,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:40:05,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:40:05,057 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:40:05,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2022-03-03 19:40:05,081 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-03-03 19:40:05,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:40:05,082 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 57 conjunts are in the unsatisfiable core [2022-03-03 19:40:05,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:40:05,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:05,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:05,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:05,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:05,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:05,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:05,786 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:05,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:05,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:05,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:05,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:05,788 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:05,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:05,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:05,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:05,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:05,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:05,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:05,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:05,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:05,791 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:05,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:05,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:05,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:05,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:05,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:05,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:05,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:05,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:05,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:05,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:05,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:05,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:05,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:05,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:05,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:05,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:05,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:05,798 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:05,799 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:05,799 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 21 disjoint index pairs (out of 66 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 44 [2022-03-03 19:40:05,812 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:40:05,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:40:06,794 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-03-03 19:40:06,794 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 130 treesize of output 528 [2022-03-03 19:40:07,874 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 12 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:40:07,874 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590582783] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:40:07,874 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:40:07,874 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 43 [2022-03-03 19:40:07,874 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337270917] [2022-03-03 19:40:07,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:40:07,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-03-03 19:40:07,874 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:40:07,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-03-03 19:40:07,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=1589, Unknown=0, NotChecked=0, Total=1892 [2022-03-03 19:40:07,875 INFO L87 Difference]: Start difference. First operand 4872 states and 10868 transitions. Second operand has 44 states, 44 states have (on average 2.227272727272727) internal successors, (98), 43 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:40:12,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:40:12,158 INFO L93 Difference]: Finished difference Result 8395 states and 18450 transitions. [2022-03-03 19:40:12,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2022-03-03 19:40:12,158 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.227272727272727) internal successors, (98), 43 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-03-03 19:40:12,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:40:12,168 INFO L225 Difference]: With dead ends: 8395 [2022-03-03 19:40:12,168 INFO L226 Difference]: Without dead ends: 8352 [2022-03-03 19:40:12,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 49 SyntacticMatches, 3 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6258 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=2905, Invalid=16555, Unknown=0, NotChecked=0, Total=19460 [2022-03-03 19:40:12,170 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 311 mSDsluCounter, 2964 mSDsCounter, 0 mSdLazyCounter, 1890 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 3013 SdHoareTripleChecker+Invalid, 2473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 501 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-03 19:40:12,170 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 3013 Invalid, 2473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1890 Invalid, 0 Unknown, 501 Unchecked, 1.0s Time] [2022-03-03 19:40:12,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8352 states. [2022-03-03 19:40:12,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8352 to 5094. [2022-03-03 19:40:12,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5094 states, 5093 states have (on average 2.234243078735519) internal successors, (11379), 5093 states have internal predecessors, (11379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:40:12,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5094 states to 5094 states and 11379 transitions. [2022-03-03 19:40:12,251 INFO L78 Accepts]: Start accepts. Automaton has 5094 states and 11379 transitions. Word has length 39 [2022-03-03 19:40:12,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:40:12,251 INFO L470 AbstractCegarLoop]: Abstraction has 5094 states and 11379 transitions. [2022-03-03 19:40:12,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.227272727272727) internal successors, (98), 43 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:40:12,251 INFO L276 IsEmpty]: Start isEmpty. Operand 5094 states and 11379 transitions. [2022-03-03 19:40:12,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-03 19:40:12,255 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:40:12,255 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:40:12,270 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Ended with exit code 0 [2022-03-03 19:40:12,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable92 [2022-03-03 19:40:12,467 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:40:12,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:40:12,467 INFO L85 PathProgramCache]: Analyzing trace with hash -13136430, now seen corresponding path program 88 times [2022-03-03 19:40:12,467 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:40:12,467 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288636401] [2022-03-03 19:40:12,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:40:12,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:40:12,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:40:12,804 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:40:12,804 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:40:12,804 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288636401] [2022-03-03 19:40:12,804 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288636401] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:40:12,804 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850632400] [2022-03-03 19:40:12,804 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:40:12,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:40:12,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:40:12,806 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:40:12,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2022-03-03 19:40:12,827 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:40:12,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:40:12,828 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 57 conjunts are in the unsatisfiable core [2022-03-03 19:40:12,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:40:13,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:13,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:13,511 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:13,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:13,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:13,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:13,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:13,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:13,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:13,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:13,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:13,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:13,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:13,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:13,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:13,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:13,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:13,517 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:13,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:13,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:13,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:13,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:13,518 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:13,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:13,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:13,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:13,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:13,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:13,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:13,521 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:13,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:13,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:13,522 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 21 disjoint index pairs (out of 55 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 44 [2022-03-03 19:40:13,536 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 2 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:40:13,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:40:14,485 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-03-03 19:40:14,486 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 130 treesize of output 528 [2022-03-03 19:40:15,871 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 3 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:40:15,871 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850632400] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:40:15,871 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:40:15,871 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 17] total 40 [2022-03-03 19:40:15,872 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29909452] [2022-03-03 19:40:15,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:40:15,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-03 19:40:15,872 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:40:15,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-03 19:40:15,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=1354, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 19:40:15,872 INFO L87 Difference]: Start difference. First operand 5094 states and 11379 transitions. Second operand has 41 states, 41 states have (on average 2.317073170731707) internal successors, (95), 40 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:40:18,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:40:18,247 INFO L93 Difference]: Finished difference Result 8478 states and 18545 transitions. [2022-03-03 19:40:18,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-03-03 19:40:18,248 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.317073170731707) internal successors, (95), 40 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-03-03 19:40:18,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:40:18,256 INFO L225 Difference]: With dead ends: 8478 [2022-03-03 19:40:18,256 INFO L226 Difference]: Without dead ends: 7975 [2022-03-03 19:40:18,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 48 SyntacticMatches, 6 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1536 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=814, Invalid=4588, Unknown=0, NotChecked=0, Total=5402 [2022-03-03 19:40:18,257 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 562 mSDsluCounter, 2745 mSDsCounter, 0 mSdLazyCounter, 1809 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 562 SdHoareTripleChecker+Valid, 1946 SdHoareTripleChecker+Invalid, 2095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 1809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 143 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-03 19:40:18,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [562 Valid, 1946 Invalid, 2095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 1809 Invalid, 0 Unknown, 143 Unchecked, 0.9s Time] [2022-03-03 19:40:18,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7975 states. [2022-03-03 19:40:18,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7975 to 5874. [2022-03-03 19:40:18,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5874 states, 5873 states have (on average 2.239570917759237) internal successors, (13153), 5873 states have internal predecessors, (13153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:40:18,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5874 states to 5874 states and 13153 transitions. [2022-03-03 19:40:18,352 INFO L78 Accepts]: Start accepts. Automaton has 5874 states and 13153 transitions. Word has length 39 [2022-03-03 19:40:18,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:40:18,352 INFO L470 AbstractCegarLoop]: Abstraction has 5874 states and 13153 transitions. [2022-03-03 19:40:18,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.317073170731707) internal successors, (95), 40 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:40:18,353 INFO L276 IsEmpty]: Start isEmpty. Operand 5874 states and 13153 transitions. [2022-03-03 19:40:18,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-03 19:40:18,356 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:40:18,356 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:40:18,372 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Ended with exit code 0 [2022-03-03 19:40:18,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:40:18,572 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:40:18,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:40:18,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1892279486, now seen corresponding path program 89 times [2022-03-03 19:40:18,572 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:40:18,572 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229227424] [2022-03-03 19:40:18,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:40:18,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:40:18,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:40:18,862 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-03 19:40:18,862 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:40:18,862 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229227424] [2022-03-03 19:40:18,862 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229227424] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:40:18,862 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814611680] [2022-03-03 19:40:18,862 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:40:18,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:40:18,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:40:18,864 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:40:18,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2022-03-03 19:40:18,887 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-03-03 19:40:18,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:40:18,888 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 59 conjunts are in the unsatisfiable core [2022-03-03 19:40:18,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:40:19,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:19,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:19,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:19,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:19,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:19,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:19,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:19,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:19,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:19,476 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:19,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:19,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:19,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:19,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:19,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:19,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:19,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:19,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:19,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:19,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:19,481 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:19,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:19,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:19,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:19,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:19,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:19,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:19,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:19,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:19,484 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:19,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:19,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:19,485 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:19,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:19,486 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 21 disjoint index pairs (out of 55 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 48 [2022-03-03 19:40:19,498 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 3 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:40:19,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:40:20,149 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:20,150 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:20,150 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:20,151 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:20,151 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:20,151 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:20,151 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:20,151 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:20,152 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:20,152 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:20,152 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:20,154 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:20,154 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:20,154 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:20,154 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:20,155 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:20,156 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:20,156 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:20,156 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:20,156 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:20,156 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:20,158 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:20,158 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:20,158 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:20,159 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:20,159 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:20,160 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:20,161 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:20,161 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:20,161 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:20,161 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:20,161 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:20,162 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:20,163 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:20,163 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:20,163 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:20,164 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:20,165 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:20,165 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:20,165 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:20,165 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:20,165 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:20,166 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:20,166 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:20,166 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:20,166 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:20,168 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:20,168 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:20,168 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:20,169 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:20,169 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:20,169 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:20,169 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:20,170 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:20,170 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:20,170 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:20,170 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:20,172 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:20,172 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:20,172 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:20,173 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:20,173 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:20,173 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:20,260 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:40:20,260 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 63 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 28 case distinctions, treesize of input 130 treesize of output 372 [2022-03-03 19:40:20,961 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:40:20,961 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814611680] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:40:20,961 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:40:20,961 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 17] total 42 [2022-03-03 19:40:20,961 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353488566] [2022-03-03 19:40:20,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:40:20,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-03-03 19:40:20,961 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:40:20,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-03-03 19:40:20,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=433, Invalid=1373, Unknown=0, NotChecked=0, Total=1806 [2022-03-03 19:40:20,962 INFO L87 Difference]: Start difference. First operand 5874 states and 13153 transitions. Second operand has 43 states, 43 states have (on average 2.186046511627907) internal successors, (94), 42 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:40:24,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:40:24,979 INFO L93 Difference]: Finished difference Result 10878 states and 23605 transitions. [2022-03-03 19:40:24,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-03-03 19:40:24,979 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.186046511627907) internal successors, (94), 42 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-03-03 19:40:24,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:40:24,994 INFO L225 Difference]: With dead ends: 10878 [2022-03-03 19:40:24,994 INFO L226 Difference]: Without dead ends: 10238 [2022-03-03 19:40:24,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 47 SyntacticMatches, 5 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2353 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1557, Invalid=6453, Unknown=0, NotChecked=0, Total=8010 [2022-03-03 19:40:24,995 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 658 mSDsluCounter, 2693 mSDsCounter, 0 mSdLazyCounter, 1522 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 658 SdHoareTripleChecker+Valid, 1866 SdHoareTripleChecker+Invalid, 2101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 1522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 413 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-03 19:40:24,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [658 Valid, 1866 Invalid, 2101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 1522 Invalid, 0 Unknown, 413 Unchecked, 1.0s Time] [2022-03-03 19:40:25,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10238 states. [2022-03-03 19:40:25,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10238 to 6965. [2022-03-03 19:40:25,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6965 states, 6964 states have (on average 2.2501435956346927) internal successors, (15670), 6964 states have internal predecessors, (15670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:40:25,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6965 states to 6965 states and 15670 transitions. [2022-03-03 19:40:25,117 INFO L78 Accepts]: Start accepts. Automaton has 6965 states and 15670 transitions. Word has length 39 [2022-03-03 19:40:25,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:40:25,117 INFO L470 AbstractCegarLoop]: Abstraction has 6965 states and 15670 transitions. [2022-03-03 19:40:25,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.186046511627907) internal successors, (94), 42 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:40:25,117 INFO L276 IsEmpty]: Start isEmpty. Operand 6965 states and 15670 transitions. [2022-03-03 19:40:25,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-03 19:40:25,121 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:40:25,121 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:40:25,137 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Ended with exit code 0 [2022-03-03 19:40:25,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:40:25,323 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:40:25,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:40:25,323 INFO L85 PathProgramCache]: Analyzing trace with hash -517805614, now seen corresponding path program 90 times [2022-03-03 19:40:25,323 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:40:25,323 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142947523] [2022-03-03 19:40:25,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:40:25,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:40:25,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:40:25,674 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:40:25,674 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:40:25,675 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142947523] [2022-03-03 19:40:25,675 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142947523] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:40:25,675 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24527841] [2022-03-03 19:40:25,675 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:40:25,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:40:25,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:40:25,676 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:40:25,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2022-03-03 19:40:25,700 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-03-03 19:40:25,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:40:25,701 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 57 conjunts are in the unsatisfiable core [2022-03-03 19:40:25,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:40:26,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:26,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:26,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:26,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:26,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:26,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:26,357 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:26,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:26,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:26,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:26,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:26,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:26,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:26,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:26,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:26,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:26,361 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:26,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:26,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:26,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:26,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:26,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:26,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:26,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:26,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:26,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:26,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:26,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:26,365 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:26,366 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:26,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:26,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:26,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:26,367 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 21 disjoint index pairs (out of 55 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 44 [2022-03-03 19:40:26,379 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:40:26,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:40:27,472 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-03-03 19:40:27,472 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 130 treesize of output 528 [2022-03-03 19:40:28,641 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 3 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:40:28,641 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24527841] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:40:28,641 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:40:28,641 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 42 [2022-03-03 19:40:28,641 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537147506] [2022-03-03 19:40:28,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:40:28,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-03-03 19:40:28,642 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:40:28,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-03-03 19:40:28,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=1516, Unknown=0, NotChecked=0, Total=1806 [2022-03-03 19:40:28,644 INFO L87 Difference]: Start difference. First operand 6965 states and 15670 transitions. Second operand has 43 states, 43 states have (on average 2.2093023255813953) internal successors, (95), 42 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:40:30,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:40:30,649 INFO L93 Difference]: Finished difference Result 12330 states and 27409 transitions. [2022-03-03 19:40:30,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-03-03 19:40:30,650 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.2093023255813953) internal successors, (95), 42 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-03-03 19:40:30,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:40:30,675 INFO L225 Difference]: With dead ends: 12330 [2022-03-03 19:40:30,675 INFO L226 Difference]: Without dead ends: 11928 [2022-03-03 19:40:30,676 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 48 SyntacticMatches, 4 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2048 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1213, Invalid=5927, Unknown=0, NotChecked=0, Total=7140 [2022-03-03 19:40:30,676 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 462 mSDsluCounter, 2549 mSDsCounter, 0 mSdLazyCounter, 1417 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 1795 SdHoareTripleChecker+Invalid, 2191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 687 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 19:40:30,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [462 Valid, 1795 Invalid, 2191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1417 Invalid, 0 Unknown, 687 Unchecked, 0.7s Time] [2022-03-03 19:40:30,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11928 states. [2022-03-03 19:40:30,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11928 to 6186. [2022-03-03 19:40:30,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6186 states, 6185 states have (on average 2.242198868229588) internal successors, (13868), 6185 states have internal predecessors, (13868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:40:30,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6186 states to 6186 states and 13868 transitions. [2022-03-03 19:40:30,803 INFO L78 Accepts]: Start accepts. Automaton has 6186 states and 13868 transitions. Word has length 39 [2022-03-03 19:40:30,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:40:30,803 INFO L470 AbstractCegarLoop]: Abstraction has 6186 states and 13868 transitions. [2022-03-03 19:40:30,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.2093023255813953) internal successors, (95), 42 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:40:30,803 INFO L276 IsEmpty]: Start isEmpty. Operand 6186 states and 13868 transitions. [2022-03-03 19:40:30,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-03 19:40:30,807 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:40:30,807 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:40:30,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Forceful destruction successful, exit code 0 [2022-03-03 19:40:31,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:40:31,011 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:40:31,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:40:31,011 INFO L85 PathProgramCache]: Analyzing trace with hash -858788542, now seen corresponding path program 91 times [2022-03-03 19:40:31,011 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:40:31,012 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510440619] [2022-03-03 19:40:31,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:40:31,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:40:31,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:40:31,340 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:40:31,340 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:40:31,340 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510440619] [2022-03-03 19:40:31,340 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510440619] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:40:31,340 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377248010] [2022-03-03 19:40:31,340 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:40:31,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:40:31,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:40:31,342 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:40:31,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2022-03-03 19:40:31,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:40:31,364 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 57 conjunts are in the unsatisfiable core [2022-03-03 19:40:31,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:40:32,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:32,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:32,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:32,059 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:32,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:32,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:32,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:32,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:32,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:32,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:32,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:32,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:32,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:32,064 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:32,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:32,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:32,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:32,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:32,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:32,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:32,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:32,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:32,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:32,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:32,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:32,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:32,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:32,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:32,072 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:32,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:32,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:32,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:32,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:32,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:32,109 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:32,109 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 21 disjoint index pairs (out of 55 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 44 [2022-03-03 19:40:32,129 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:40:32,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:40:33,455 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-03-03 19:40:33,456 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 130 treesize of output 528 [2022-03-03 19:40:34,691 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 6 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:40:34,691 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377248010] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:40:34,691 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:40:34,691 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 42 [2022-03-03 19:40:34,691 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172637753] [2022-03-03 19:40:34,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:40:34,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-03-03 19:40:34,691 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:40:34,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-03-03 19:40:34,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=1513, Unknown=0, NotChecked=0, Total=1806 [2022-03-03 19:40:34,692 INFO L87 Difference]: Start difference. First operand 6186 states and 13868 transitions. Second operand has 43 states, 43 states have (on average 2.2093023255813953) internal successors, (95), 42 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:40:36,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:40:36,289 INFO L93 Difference]: Finished difference Result 10931 states and 24305 transitions. [2022-03-03 19:40:36,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-03-03 19:40:36,289 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.2093023255813953) internal successors, (95), 42 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-03-03 19:40:36,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:40:36,302 INFO L225 Difference]: With dead ends: 10931 [2022-03-03 19:40:36,303 INFO L226 Difference]: Without dead ends: 10874 [2022-03-03 19:40:36,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 48 SyntacticMatches, 4 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1566 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=930, Invalid=5076, Unknown=0, NotChecked=0, Total=6006 [2022-03-03 19:40:36,303 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 317 mSDsluCounter, 1320 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 1259 SdHoareTripleChecker+Invalid, 1351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 433 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 19:40:36,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 1259 Invalid, 1351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 841 Invalid, 0 Unknown, 433 Unchecked, 0.4s Time] [2022-03-03 19:40:36,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10874 states. [2022-03-03 19:40:36,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10874 to 6523. [2022-03-03 19:40:36,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6523 states, 6522 states have (on average 2.242256976387611) internal successors, (14624), 6522 states have internal predecessors, (14624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:40:36,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6523 states to 6523 states and 14624 transitions. [2022-03-03 19:40:36,416 INFO L78 Accepts]: Start accepts. Automaton has 6523 states and 14624 transitions. Word has length 39 [2022-03-03 19:40:36,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:40:36,416 INFO L470 AbstractCegarLoop]: Abstraction has 6523 states and 14624 transitions. [2022-03-03 19:40:36,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.2093023255813953) internal successors, (95), 42 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:40:36,416 INFO L276 IsEmpty]: Start isEmpty. Operand 6523 states and 14624 transitions. [2022-03-03 19:40:36,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-03 19:40:36,420 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:40:36,420 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:40:36,436 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Ended with exit code 0 [2022-03-03 19:40:36,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:40:36,635 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:40:36,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:40:36,636 INFO L85 PathProgramCache]: Analyzing trace with hash -798877582, now seen corresponding path program 92 times [2022-03-03 19:40:36,637 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:40:36,637 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224355486] [2022-03-03 19:40:36,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:40:36,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:40:36,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:40:36,982 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:40:36,982 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:40:36,982 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224355486] [2022-03-03 19:40:36,982 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224355486] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:40:36,982 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945626381] [2022-03-03 19:40:36,982 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:40:36,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:40:36,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:40:36,985 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:40:36,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2022-03-03 19:40:37,007 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:40:37,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:40:37,008 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 57 conjunts are in the unsatisfiable core [2022-03-03 19:40:37,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:40:37,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:37,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:37,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:37,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:37,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:37,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:37,742 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:37,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:37,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:37,743 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:37,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:37,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:37,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:37,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:37,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:37,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:37,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:37,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:37,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:37,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:37,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:37,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:37,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:37,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:37,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:37,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:37,750 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:37,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:37,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:37,751 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 21 disjoint index pairs (out of 45 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 44 [2022-03-03 19:40:37,765 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:40:37,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:40:38,784 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-03-03 19:40:38,784 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 130 treesize of output 528 [2022-03-03 19:40:39,683 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 6 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:40:39,683 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945626381] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:40:39,683 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:40:39,684 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 41 [2022-03-03 19:40:39,684 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43719950] [2022-03-03 19:40:39,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:40:39,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-03-03 19:40:39,684 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:40:39,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-03-03 19:40:39,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=1440, Unknown=0, NotChecked=0, Total=1722 [2022-03-03 19:40:39,684 INFO L87 Difference]: Start difference. First operand 6523 states and 14624 transitions. Second operand has 42 states, 42 states have (on average 2.1904761904761907) internal successors, (92), 41 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:40:42,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:40:42,022 INFO L93 Difference]: Finished difference Result 12412 states and 27599 transitions. [2022-03-03 19:40:42,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-03-03 19:40:42,022 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.1904761904761907) internal successors, (92), 41 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-03-03 19:40:42,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:40:42,039 INFO L225 Difference]: With dead ends: 12412 [2022-03-03 19:40:42,039 INFO L226 Difference]: Without dead ends: 12365 [2022-03-03 19:40:42,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 52 SyntacticMatches, 5 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2862 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1588, Invalid=8312, Unknown=0, NotChecked=0, Total=9900 [2022-03-03 19:40:42,043 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 339 mSDsluCounter, 1459 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 1447 SdHoareTripleChecker+Invalid, 1368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 355 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 19:40:42,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 1447 Invalid, 1368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 943 Invalid, 0 Unknown, 355 Unchecked, 0.5s Time] [2022-03-03 19:40:42,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12365 states. [2022-03-03 19:40:42,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12365 to 7081. [2022-03-03 19:40:42,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7081 states, 7080 states have (on average 2.239689265536723) internal successors, (15857), 7080 states have internal predecessors, (15857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:40:42,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7081 states to 7081 states and 15857 transitions. [2022-03-03 19:40:42,156 INFO L78 Accepts]: Start accepts. Automaton has 7081 states and 15857 transitions. Word has length 39 [2022-03-03 19:40:42,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:40:42,157 INFO L470 AbstractCegarLoop]: Abstraction has 7081 states and 15857 transitions. [2022-03-03 19:40:42,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.1904761904761907) internal successors, (92), 41 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:40:42,157 INFO L276 IsEmpty]: Start isEmpty. Operand 7081 states and 15857 transitions. [2022-03-03 19:40:42,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-03 19:40:42,160 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:40:42,160 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:40:42,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Forceful destruction successful, exit code 0 [2022-03-03 19:40:42,371 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,SelfDestructingSolverStorable97 [2022-03-03 19:40:42,371 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:40:42,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:40:42,372 INFO L85 PathProgramCache]: Analyzing trace with hash -691098734, now seen corresponding path program 93 times [2022-03-03 19:40:42,372 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:40:42,372 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044865787] [2022-03-03 19:40:42,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:40:42,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:40:42,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:40:42,740 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:40:42,740 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:40:42,741 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044865787] [2022-03-03 19:40:42,741 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044865787] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:40:42,741 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825347040] [2022-03-03 19:40:42,741 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:40:42,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:40:42,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:40:42,742 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:40:42,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2022-03-03 19:40:42,770 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-03-03 19:40:42,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:40:42,771 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 57 conjunts are in the unsatisfiable core [2022-03-03 19:40:42,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:40:43,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:43,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:43,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:43,534 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:43,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:43,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:43,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:43,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:43,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:43,537 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:43,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:43,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:43,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:43,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:43,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:43,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:43,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:43,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:43,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:43,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:43,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:43,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:43,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:43,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:43,546 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 21 disjoint index pairs (out of 36 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 44 [2022-03-03 19:40:43,571 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 2 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:40:43,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:40:44,888 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-03-03 19:40:44,889 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 130 treesize of output 528 [2022-03-03 19:40:46,300 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 6 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:40:46,301 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825347040] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:40:46,301 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:40:46,301 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 17] total 38 [2022-03-03 19:40:46,301 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677728063] [2022-03-03 19:40:46,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:40:46,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-03-03 19:40:46,301 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:40:46,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-03-03 19:40:46,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=1229, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 19:40:46,301 INFO L87 Difference]: Start difference. First operand 7081 states and 15857 transitions. Second operand has 39 states, 39 states have (on average 2.282051282051282) internal successors, (89), 38 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:40:48,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:40:48,192 INFO L93 Difference]: Finished difference Result 11193 states and 24627 transitions. [2022-03-03 19:40:48,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-03-03 19:40:48,192 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.282051282051282) internal successors, (89), 38 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-03-03 19:40:48,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:40:48,205 INFO L225 Difference]: With dead ends: 11193 [2022-03-03 19:40:48,205 INFO L226 Difference]: Without dead ends: 10775 [2022-03-03 19:40:48,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 49 SyntacticMatches, 7 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1054 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=642, Invalid=3264, Unknown=0, NotChecked=0, Total=3906 [2022-03-03 19:40:48,205 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 620 mSDsluCounter, 1858 mSDsCounter, 0 mSdLazyCounter, 1271 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 620 SdHoareTripleChecker+Valid, 1382 SdHoareTripleChecker+Invalid, 1522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 1271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 108 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 19:40:48,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [620 Valid, 1382 Invalid, 1522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 1271 Invalid, 0 Unknown, 108 Unchecked, 0.8s Time] [2022-03-03 19:40:48,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10775 states. [2022-03-03 19:40:48,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10775 to 7552. [2022-03-03 19:40:48,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7552 states, 7551 states have (on average 2.243543901470004) internal successors, (16941), 7551 states have internal predecessors, (16941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:40:48,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7552 states to 7552 states and 16941 transitions. [2022-03-03 19:40:48,317 INFO L78 Accepts]: Start accepts. Automaton has 7552 states and 16941 transitions. Word has length 39 [2022-03-03 19:40:48,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:40:48,317 INFO L470 AbstractCegarLoop]: Abstraction has 7552 states and 16941 transitions. [2022-03-03 19:40:48,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.282051282051282) internal successors, (89), 38 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:40:48,317 INFO L276 IsEmpty]: Start isEmpty. Operand 7552 states and 16941 transitions. [2022-03-03 19:40:48,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-03 19:40:48,321 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:40:48,321 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:40:48,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Forceful destruction successful, exit code 0 [2022-03-03 19:40:48,529 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,SelfDestructingSolverStorable98 [2022-03-03 19:40:48,529 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:40:48,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:40:48,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1216638574, now seen corresponding path program 94 times [2022-03-03 19:40:48,529 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:40:48,529 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188191374] [2022-03-03 19:40:48,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:40:48,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:40:48,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:40:48,781 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:40:48,781 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:40:48,781 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188191374] [2022-03-03 19:40:48,781 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188191374] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:40:48,781 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220277109] [2022-03-03 19:40:48,781 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:40:48,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:40:48,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:40:48,782 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:40:48,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2022-03-03 19:40:48,811 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:40:48,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:40:48,816 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 57 conjunts are in the unsatisfiable core [2022-03-03 19:40:48,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:40:49,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:49,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:49,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:49,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:49,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:49,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:49,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:49,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:49,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:49,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:49,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:49,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:49,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:49,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:49,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:49,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:49,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:49,426 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:49,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:49,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:49,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:49,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:49,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:49,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:49,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:49,430 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:49,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:49,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:49,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:49,431 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 21 disjoint index pairs (out of 36 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 44 [2022-03-03 19:40:49,443 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 2 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:40:49,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:40:50,386 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-03-03 19:40:50,386 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 130 treesize of output 528 [2022-03-03 19:40:52,020 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 6 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:40:52,021 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220277109] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:40:52,021 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:40:52,021 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 17] total 38 [2022-03-03 19:40:52,021 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191183987] [2022-03-03 19:40:52,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:40:52,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-03-03 19:40:52,021 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:40:52,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-03-03 19:40:52,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=1232, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 19:40:52,024 INFO L87 Difference]: Start difference. First operand 7552 states and 16941 transitions. Second operand has 39 states, 39 states have (on average 2.282051282051282) internal successors, (89), 38 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:40:53,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:40:53,639 INFO L93 Difference]: Finished difference Result 12346 states and 27336 transitions. [2022-03-03 19:40:53,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-03-03 19:40:53,639 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.282051282051282) internal successors, (89), 38 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-03-03 19:40:53,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:40:53,667 INFO L225 Difference]: With dead ends: 12346 [2022-03-03 19:40:53,668 INFO L226 Difference]: Without dead ends: 11712 [2022-03-03 19:40:53,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 48 SyntacticMatches, 8 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1261 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=757, Invalid=3935, Unknown=0, NotChecked=0, Total=4692 [2022-03-03 19:40:53,668 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 611 mSDsluCounter, 2131 mSDsCounter, 0 mSdLazyCounter, 1466 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 1545 SdHoareTripleChecker+Invalid, 1711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 1466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 96 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 19:40:53,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [611 Valid, 1545 Invalid, 1711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 1466 Invalid, 0 Unknown, 96 Unchecked, 0.6s Time] [2022-03-03 19:40:53,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11712 states. [2022-03-03 19:40:53,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11712 to 7834. [2022-03-03 19:40:53,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7834 states, 7833 states have (on average 2.248563768671007) internal successors, (17613), 7833 states have internal predecessors, (17613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:40:53,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7834 states to 7834 states and 17613 transitions. [2022-03-03 19:40:53,827 INFO L78 Accepts]: Start accepts. Automaton has 7834 states and 17613 transitions. Word has length 39 [2022-03-03 19:40:53,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:40:53,827 INFO L470 AbstractCegarLoop]: Abstraction has 7834 states and 17613 transitions. [2022-03-03 19:40:53,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.282051282051282) internal successors, (89), 38 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:40:53,827 INFO L276 IsEmpty]: Start isEmpty. Operand 7834 states and 17613 transitions. [2022-03-03 19:40:53,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-03 19:40:53,832 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:40:53,832 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:40:53,848 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Ended with exit code 0 [2022-03-03 19:40:54,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2022-03-03 19:40:54,048 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:40:54,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:40:54,049 INFO L85 PathProgramCache]: Analyzing trace with hash 545716114, now seen corresponding path program 95 times [2022-03-03 19:40:54,049 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:40:54,049 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231767962] [2022-03-03 19:40:54,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:40:54,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:40:54,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:40:54,439 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:40:54,440 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:40:54,440 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231767962] [2022-03-03 19:40:54,440 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231767962] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:40:54,440 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628981481] [2022-03-03 19:40:54,440 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:40:54,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:40:54,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:40:54,441 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:40:54,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2022-03-03 19:40:54,467 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-03-03 19:40:54,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:40:54,468 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 58 conjunts are in the unsatisfiable core [2022-03-03 19:40:54,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:40:55,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:55,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:55,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:55,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:55,265 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:55,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:55,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:55,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:55,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:55,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:55,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:55,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:55,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:55,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:55,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:55,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:55,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:55,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:55,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:55,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:55,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:55,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:55,274 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:55,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:55,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:55,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:40:55,277 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 21 disjoint index pairs (out of 36 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 48 [2022-03-03 19:40:55,295 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 2 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:40:55,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:40:55,957 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:55,958 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:55,958 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:55,958 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:55,959 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:55,959 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:55,959 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:55,959 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:55,960 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:55,960 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:55,960 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:55,962 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:55,962 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:55,963 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:55,963 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:55,963 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:55,964 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:55,964 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:55,965 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:55,965 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:55,965 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:55,967 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:55,967 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:55,967 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:55,968 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:55,968 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:55,969 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:55,969 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:55,970 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:55,970 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:55,970 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:55,970 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:55,971 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:55,972 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:55,972 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:55,972 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:55,973 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:55,973 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:55,974 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:55,974 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:55,974 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:55,974 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:55,974 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:55,975 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:55,975 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:55,975 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:55,976 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:55,977 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:55,977 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:55,978 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:55,978 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:55,978 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:55,978 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:55,978 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:55,979 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:55,979 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:55,979 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:55,980 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:55,981 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:55,981 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:55,981 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:55,982 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:55,982 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:40:56,053 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:40:56,054 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 63 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 28 case distinctions, treesize of input 130 treesize of output 372 [2022-03-03 19:40:56,776 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:40:56,776 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628981481] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:40:56,776 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:40:56,776 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 17] total 39 [2022-03-03 19:40:56,776 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220201366] [2022-03-03 19:40:56,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:40:56,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-03-03 19:40:56,776 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:40:56,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-03-03 19:40:56,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=1180, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 19:40:56,777 INFO L87 Difference]: Start difference. First operand 7834 states and 17613 transitions. Second operand has 40 states, 40 states have (on average 2.25) internal successors, (90), 39 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:40:59,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:40:59,331 INFO L93 Difference]: Finished difference Result 14263 states and 31520 transitions. [2022-03-03 19:40:59,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-03-03 19:40:59,331 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.25) internal successors, (90), 39 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-03-03 19:40:59,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:40:59,363 INFO L225 Difference]: With dead ends: 14263 [2022-03-03 19:40:59,364 INFO L226 Difference]: Without dead ends: 13773 [2022-03-03 19:40:59,364 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 48 SyntacticMatches, 7 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1533 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1093, Invalid=4163, Unknown=0, NotChecked=0, Total=5256 [2022-03-03 19:40:59,364 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 721 mSDsluCounter, 1796 mSDsCounter, 0 mSdLazyCounter, 1231 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 721 SdHoareTripleChecker+Valid, 1290 SdHoareTripleChecker+Invalid, 1546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 1231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 114 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 19:40:59,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [721 Valid, 1290 Invalid, 1546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 1231 Invalid, 0 Unknown, 114 Unchecked, 0.7s Time] [2022-03-03 19:40:59,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13773 states. [2022-03-03 19:40:59,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13773 to 9478. [2022-03-03 19:40:59,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9478 states, 9477 states have (on average 2.245858394006542) internal successors, (21284), 9477 states have internal predecessors, (21284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:40:59,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9478 states to 9478 states and 21284 transitions. [2022-03-03 19:40:59,556 INFO L78 Accepts]: Start accepts. Automaton has 9478 states and 21284 transitions. Word has length 39 [2022-03-03 19:40:59,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:40:59,556 INFO L470 AbstractCegarLoop]: Abstraction has 9478 states and 21284 transitions. [2022-03-03 19:40:59,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.25) internal successors, (90), 39 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:40:59,557 INFO L276 IsEmpty]: Start isEmpty. Operand 9478 states and 21284 transitions. [2022-03-03 19:40:59,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-03 19:40:59,563 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:40:59,563 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:40:59,586 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Ended with exit code 0 [2022-03-03 19:40:59,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100,98 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:40:59,778 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:40:59,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:40:59,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1835060478, now seen corresponding path program 96 times [2022-03-03 19:40:59,779 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:40:59,779 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255562762] [2022-03-03 19:40:59,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:40:59,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:40:59,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:41:00,093 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:41:00,093 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:41:00,093 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255562762] [2022-03-03 19:41:00,093 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255562762] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:41:00,093 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929682769] [2022-03-03 19:41:00,093 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:41:00,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:41:00,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:41:00,094 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:41:00,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2022-03-03 19:41:00,117 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-03-03 19:41:00,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:41:00,118 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 59 conjunts are in the unsatisfiable core [2022-03-03 19:41:00,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:41:00,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:00,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:00,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:00,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:00,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:00,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:00,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:00,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:00,764 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:00,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:00,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:00,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:00,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:00,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:00,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:00,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:00,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:00,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:00,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:00,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:00,769 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:00,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:00,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:00,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:00,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:00,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:00,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:00,772 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 21 disjoint index pairs (out of 36 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 44 [2022-03-03 19:41:00,785 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:41:00,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:41:01,988 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-03-03 19:41:01,989 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 130 treesize of output 528 [2022-03-03 19:41:03,403 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 6 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:41:03,403 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929682769] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:41:03,403 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:41:03,404 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 17] total 38 [2022-03-03 19:41:03,404 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449439436] [2022-03-03 19:41:03,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:41:03,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-03-03 19:41:03,404 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:41:03,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-03-03 19:41:03,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=1228, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 19:41:03,404 INFO L87 Difference]: Start difference. First operand 9478 states and 21284 transitions. Second operand has 39 states, 39 states have (on average 2.282051282051282) internal successors, (89), 38 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:41:05,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:41:05,428 INFO L93 Difference]: Finished difference Result 16669 states and 37110 transitions. [2022-03-03 19:41:05,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-03-03 19:41:05,428 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.282051282051282) internal successors, (89), 38 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-03-03 19:41:05,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:41:05,465 INFO L225 Difference]: With dead ends: 16669 [2022-03-03 19:41:05,465 INFO L226 Difference]: Without dead ends: 16504 [2022-03-03 19:41:05,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 49 SyntacticMatches, 7 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1984 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1098, Invalid=5874, Unknown=0, NotChecked=0, Total=6972 [2022-03-03 19:41:05,467 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 434 mSDsluCounter, 1771 mSDsCounter, 0 mSdLazyCounter, 1289 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 1553 SdHoareTripleChecker+Invalid, 1577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 144 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 19:41:05,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [434 Valid, 1553 Invalid, 1577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 1289 Invalid, 0 Unknown, 144 Unchecked, 0.6s Time] [2022-03-03 19:41:05,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16504 states. [2022-03-03 19:41:05,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16504 to 9914. [2022-03-03 19:41:05,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9914 states, 9913 states have (on average 2.255321295268839) internal successors, (22357), 9913 states have internal predecessors, (22357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:41:05,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9914 states to 9914 states and 22357 transitions. [2022-03-03 19:41:05,718 INFO L78 Accepts]: Start accepts. Automaton has 9914 states and 22357 transitions. Word has length 39 [2022-03-03 19:41:05,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:41:05,718 INFO L470 AbstractCegarLoop]: Abstraction has 9914 states and 22357 transitions. [2022-03-03 19:41:05,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.282051282051282) internal successors, (89), 38 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:41:05,718 INFO L276 IsEmpty]: Start isEmpty. Operand 9914 states and 22357 transitions. [2022-03-03 19:41:05,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-03 19:41:05,723 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:41:05,723 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:41:05,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Forceful destruction successful, exit code 0 [2022-03-03 19:41:05,939 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,SelfDestructingSolverStorable101 [2022-03-03 19:41:05,939 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:41:05,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:41:05,940 INFO L85 PathProgramCache]: Analyzing trace with hash -299935998, now seen corresponding path program 97 times [2022-03-03 19:41:05,940 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:41:05,940 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759674881] [2022-03-03 19:41:05,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:41:05,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:41:05,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:41:06,310 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:41:06,310 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:41:06,310 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759674881] [2022-03-03 19:41:06,310 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759674881] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:41:06,310 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155580862] [2022-03-03 19:41:06,310 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:41:06,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:41:06,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:41:06,313 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:41:06,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2022-03-03 19:41:06,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:41:06,378 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 57 conjunts are in the unsatisfiable core [2022-03-03 19:41:06,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:41:07,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:07,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:07,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:07,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:07,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:07,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:07,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:07,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:07,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:07,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:07,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:07,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:07,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:07,074 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:07,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:07,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:07,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:07,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:07,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:07,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:07,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:07,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:07,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:07,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:07,078 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:07,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:07,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:07,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:07,080 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 21 disjoint index pairs (out of 36 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 44 [2022-03-03 19:41:07,093 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:41:07,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:41:08,089 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-03-03 19:41:08,089 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 130 treesize of output 528 [2022-03-03 19:41:09,764 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 6 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:41:09,764 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155580862] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:41:09,764 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:41:09,764 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 40 [2022-03-03 19:41:09,764 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331033694] [2022-03-03 19:41:09,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:41:09,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-03 19:41:09,764 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:41:09,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-03 19:41:09,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=1371, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 19:41:09,765 INFO L87 Difference]: Start difference. First operand 9914 states and 22357 transitions. Second operand has 41 states, 41 states have (on average 2.1707317073170733) internal successors, (89), 40 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:41:11,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:41:11,826 INFO L93 Difference]: Finished difference Result 14690 states and 32820 transitions. [2022-03-03 19:41:11,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-03-03 19:41:11,826 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.1707317073170733) internal successors, (89), 40 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-03-03 19:41:11,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:41:11,846 INFO L225 Difference]: With dead ends: 14690 [2022-03-03 19:41:11,846 INFO L226 Difference]: Without dead ends: 14626 [2022-03-03 19:41:11,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 48 SyntacticMatches, 6 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2180 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1205, Invalid=6627, Unknown=0, NotChecked=0, Total=7832 [2022-03-03 19:41:11,847 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 357 mSDsluCounter, 1754 mSDsCounter, 0 mSdLazyCounter, 1068 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 1647 SdHoareTripleChecker+Invalid, 1770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 625 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 19:41:11,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [357 Valid, 1647 Invalid, 1770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1068 Invalid, 0 Unknown, 625 Unchecked, 0.5s Time] [2022-03-03 19:41:11,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14626 states. [2022-03-03 19:41:11,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14626 to 10106. [2022-03-03 19:41:11,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10106 states, 10105 states have (on average 2.25531914893617) internal successors, (22790), 10105 states have internal predecessors, (22790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:41:11,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10106 states to 10106 states and 22790 transitions. [2022-03-03 19:41:11,986 INFO L78 Accepts]: Start accepts. Automaton has 10106 states and 22790 transitions. Word has length 39 [2022-03-03 19:41:11,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:41:11,987 INFO L470 AbstractCegarLoop]: Abstraction has 10106 states and 22790 transitions. [2022-03-03 19:41:11,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.1707317073170733) internal successors, (89), 40 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:41:11,987 INFO L276 IsEmpty]: Start isEmpty. Operand 10106 states and 22790 transitions. [2022-03-03 19:41:11,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-03 19:41:11,991 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:41:11,991 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:41:12,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Forceful destruction successful, exit code 0 [2022-03-03 19:41:12,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102,100 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:41:12,194 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:41:12,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:41:12,194 INFO L85 PathProgramCache]: Analyzing trace with hash 455427778, now seen corresponding path program 98 times [2022-03-03 19:41:12,194 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:41:12,195 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454455741] [2022-03-03 19:41:12,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:41:12,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:41:12,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:41:12,551 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:41:12,551 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:41:12,551 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454455741] [2022-03-03 19:41:12,551 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454455741] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:41:12,551 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897726586] [2022-03-03 19:41:12,551 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:41:12,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:41:12,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:41:12,552 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:41:12,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2022-03-03 19:41:12,575 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:41:12,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:41:12,576 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 57 conjunts are in the unsatisfiable core [2022-03-03 19:41:12,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:41:13,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:13,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:13,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:13,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:13,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:13,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:13,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:13,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:13,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:13,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:13,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:13,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:13,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:13,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:13,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:13,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:13,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:13,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:13,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:13,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:13,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:13,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:13,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:13,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:13,146 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:13,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:13,147 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 21 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 44 [2022-03-03 19:41:13,160 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 2 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:41:13,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:41:14,251 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-03-03 19:41:14,252 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 130 treesize of output 528 [2022-03-03 19:41:15,915 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 12 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:41:15,915 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897726586] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:41:15,915 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:41:15,915 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 17] total 37 [2022-03-03 19:41:15,916 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245491433] [2022-03-03 19:41:15,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:41:15,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-03-03 19:41:15,917 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:41:15,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-03-03 19:41:15,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=1156, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 19:41:15,918 INFO L87 Difference]: Start difference. First operand 10106 states and 22790 transitions. Second operand has 38 states, 38 states have (on average 2.263157894736842) internal successors, (86), 37 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:41:17,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:41:17,787 INFO L93 Difference]: Finished difference Result 12375 states and 27512 transitions. [2022-03-03 19:41:17,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-03 19:41:17,788 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.263157894736842) internal successors, (86), 37 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-03-03 19:41:17,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:41:17,805 INFO L225 Difference]: With dead ends: 12375 [2022-03-03 19:41:17,806 INFO L226 Difference]: Without dead ends: 12019 [2022-03-03 19:41:17,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 57 SyntacticMatches, 8 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 900 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=607, Invalid=3053, Unknown=0, NotChecked=0, Total=3660 [2022-03-03 19:41:17,806 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 472 mSDsluCounter, 2586 mSDsCounter, 0 mSdLazyCounter, 1788 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 1826 SdHoareTripleChecker+Invalid, 2052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 158 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-03 19:41:17,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [472 Valid, 1826 Invalid, 2052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1788 Invalid, 0 Unknown, 158 Unchecked, 0.9s Time] [2022-03-03 19:41:17,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12019 states. [2022-03-03 19:41:17,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12019 to 10587. [2022-03-03 19:41:17,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10587 states, 10586 states have (on average 2.2577933119214055) internal successors, (23901), 10586 states have internal predecessors, (23901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:41:17,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10587 states to 10587 states and 23901 transitions. [2022-03-03 19:41:17,961 INFO L78 Accepts]: Start accepts. Automaton has 10587 states and 23901 transitions. Word has length 39 [2022-03-03 19:41:17,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:41:17,961 INFO L470 AbstractCegarLoop]: Abstraction has 10587 states and 23901 transitions. [2022-03-03 19:41:17,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.263157894736842) internal successors, (86), 37 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:41:17,961 INFO L276 IsEmpty]: Start isEmpty. Operand 10587 states and 23901 transitions. [2022-03-03 19:41:17,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-03 19:41:17,966 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:41:17,966 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:41:17,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Forceful destruction successful, exit code 0 [2022-03-03 19:41:18,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2022-03-03 19:41:18,179 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:41:18,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:41:18,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1925348814, now seen corresponding path program 99 times [2022-03-03 19:41:18,180 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:41:18,180 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257398208] [2022-03-03 19:41:18,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:41:18,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:41:18,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:41:18,577 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:41:18,577 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:41:18,577 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257398208] [2022-03-03 19:41:18,577 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257398208] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:41:18,577 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526886957] [2022-03-03 19:41:18,578 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:41:18,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:41:18,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:41:18,579 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:41:18,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2022-03-03 19:41:18,602 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-03-03 19:41:18,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:41:18,603 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 57 conjunts are in the unsatisfiable core [2022-03-03 19:41:18,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:41:19,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:19,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:19,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:19,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:19,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:19,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:19,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:19,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:19,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:19,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:19,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:19,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:19,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:19,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:19,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:19,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:19,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:19,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:19,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:19,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:19,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:19,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:19,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:19,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:19,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:19,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:19,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:19,231 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:19,232 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 21 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 44 [2022-03-03 19:41:19,248 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:41:19,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:41:20,381 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-03-03 19:41:20,382 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 130 treesize of output 528 [2022-03-03 19:41:21,893 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 12 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:41:21,894 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526886957] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:41:21,894 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:41:21,894 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 17] total 37 [2022-03-03 19:41:21,894 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081959574] [2022-03-03 19:41:21,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:41:21,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-03-03 19:41:21,895 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:41:21,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-03-03 19:41:21,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=1166, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 19:41:21,895 INFO L87 Difference]: Start difference. First operand 10587 states and 23901 transitions. Second operand has 38 states, 38 states have (on average 2.263157894736842) internal successors, (86), 37 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:41:23,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:41:23,216 INFO L93 Difference]: Finished difference Result 14773 states and 32922 transitions. [2022-03-03 19:41:23,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-03 19:41:23,216 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.263157894736842) internal successors, (86), 37 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-03-03 19:41:23,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:41:23,237 INFO L225 Difference]: With dead ends: 14773 [2022-03-03 19:41:23,237 INFO L226 Difference]: Without dead ends: 14606 [2022-03-03 19:41:23,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 49 SyntacticMatches, 8 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 973 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=652, Invalid=3508, Unknown=0, NotChecked=0, Total=4160 [2022-03-03 19:41:23,238 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 365 mSDsluCounter, 1545 mSDsCounter, 0 mSdLazyCounter, 1080 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 1267 SdHoareTripleChecker+Invalid, 1429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 250 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 19:41:23,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [365 Valid, 1267 Invalid, 1429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1080 Invalid, 0 Unknown, 250 Unchecked, 0.5s Time] [2022-03-03 19:41:23,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14606 states. [2022-03-03 19:41:23,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14606 to 10494. [2022-03-03 19:41:23,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10494 states, 10493 states have (on average 2.2559801772610313) internal successors, (23672), 10493 states have internal predecessors, (23672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:41:23,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10494 states to 10494 states and 23672 transitions. [2022-03-03 19:41:23,398 INFO L78 Accepts]: Start accepts. Automaton has 10494 states and 23672 transitions. Word has length 39 [2022-03-03 19:41:23,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:41:23,398 INFO L470 AbstractCegarLoop]: Abstraction has 10494 states and 23672 transitions. [2022-03-03 19:41:23,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.263157894736842) internal successors, (86), 37 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:41:23,398 INFO L276 IsEmpty]: Start isEmpty. Operand 10494 states and 23672 transitions. [2022-03-03 19:41:23,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-03 19:41:23,403 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:41:23,403 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:41:23,421 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Forceful destruction successful, exit code 0 [2022-03-03 19:41:23,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,102 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:41:23,619 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:41:23,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:41:23,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1423715278, now seen corresponding path program 100 times [2022-03-03 19:41:23,619 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:41:23,619 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33031160] [2022-03-03 19:41:23,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:41:23,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:41:23,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:41:23,959 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:41:23,959 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:41:23,959 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33031160] [2022-03-03 19:41:23,959 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33031160] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:41:23,959 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306909873] [2022-03-03 19:41:23,959 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:41:23,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:41:23,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:41:23,960 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:41:23,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2022-03-03 19:41:23,982 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:41:23,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:41:23,983 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 57 conjunts are in the unsatisfiable core [2022-03-03 19:41:23,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:41:24,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:24,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:24,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:24,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:24,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:24,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:24,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:24,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:24,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:24,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:24,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:24,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:24,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:24,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:24,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:24,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:24,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:24,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:24,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:24,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:24,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:24,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:24,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:24,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:24,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:24,812 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:24,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:24,813 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 21 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 44 [2022-03-03 19:41:24,834 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:41:24,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:41:26,172 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-03-03 19:41:26,172 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 130 treesize of output 528 [2022-03-03 19:41:27,886 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 12 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:41:27,887 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306909873] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:41:27,887 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:41:27,887 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 17] total 38 [2022-03-03 19:41:27,887 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467223829] [2022-03-03 19:41:27,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:41:27,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-03-03 19:41:27,887 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:41:27,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-03-03 19:41:27,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=1231, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 19:41:27,887 INFO L87 Difference]: Start difference. First operand 10494 states and 23672 transitions. Second operand has 39 states, 39 states have (on average 2.2051282051282053) internal successors, (86), 38 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:41:29,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:41:29,679 INFO L93 Difference]: Finished difference Result 15142 states and 33727 transitions. [2022-03-03 19:41:29,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-03-03 19:41:29,680 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.2051282051282053) internal successors, (86), 38 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-03-03 19:41:29,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:41:29,700 INFO L225 Difference]: With dead ends: 15142 [2022-03-03 19:41:29,701 INFO L226 Difference]: Without dead ends: 14997 [2022-03-03 19:41:29,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 50 SyntacticMatches, 7 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1678 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1041, Invalid=5601, Unknown=0, NotChecked=0, Total=6642 [2022-03-03 19:41:29,702 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 361 mSDsluCounter, 1818 mSDsCounter, 0 mSdLazyCounter, 1124 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 1574 SdHoareTripleChecker+Invalid, 1605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 393 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 19:41:29,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [361 Valid, 1574 Invalid, 1605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1124 Invalid, 0 Unknown, 393 Unchecked, 0.5s Time] [2022-03-03 19:41:29,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14997 states. [2022-03-03 19:41:29,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14997 to 10777. [2022-03-03 19:41:29,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10777 states, 10776 states have (on average 2.2592798812175205) internal successors, (24346), 10776 states have internal predecessors, (24346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:41:29,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10777 states to 10777 states and 24346 transitions. [2022-03-03 19:41:29,859 INFO L78 Accepts]: Start accepts. Automaton has 10777 states and 24346 transitions. Word has length 39 [2022-03-03 19:41:29,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:41:29,859 INFO L470 AbstractCegarLoop]: Abstraction has 10777 states and 24346 transitions. [2022-03-03 19:41:29,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.2051282051282053) internal successors, (86), 38 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:41:29,860 INFO L276 IsEmpty]: Start isEmpty. Operand 10777 states and 24346 transitions. [2022-03-03 19:41:29,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-03 19:41:29,864 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:41:29,864 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:41:29,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Forceful destruction successful, exit code 0 [2022-03-03 19:41:30,079 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,SelfDestructingSolverStorable105 [2022-03-03 19:41:30,079 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:41:30,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:41:30,080 INFO L85 PathProgramCache]: Analyzing trace with hash -390224334, now seen corresponding path program 101 times [2022-03-03 19:41:30,080 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:41:30,080 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140219181] [2022-03-03 19:41:30,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:41:30,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:41:30,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:41:30,398 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:41:30,398 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:41:30,399 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140219181] [2022-03-03 19:41:30,399 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140219181] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:41:30,399 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332079083] [2022-03-03 19:41:30,399 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:41:30,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:41:30,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:41:30,400 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:41:30,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2022-03-03 19:41:30,423 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-03-03 19:41:30,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:41:30,424 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 58 conjunts are in the unsatisfiable core [2022-03-03 19:41:30,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:41:31,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:31,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:31,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:31,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:31,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:31,238 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:31,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:31,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:31,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:31,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:31,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:31,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:31,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:31,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:31,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:31,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:31,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:31,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:31,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:31,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:31,246 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:31,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:31,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:31,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:31,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:31,248 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:31,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:31,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:31,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:31,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:31,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:31,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:31,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:31,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:31,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:31,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:31,254 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:31,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:31,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:31,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:31,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:31,256 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:31,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:31,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:31,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:31,258 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:31,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:31,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:31,260 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:31,260 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 21 disjoint index pairs (out of 91 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 37 [2022-03-03 19:41:31,284 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:41:31,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:41:32,374 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:32,375 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:32,375 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:32,376 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:32,376 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:32,376 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:32,377 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:32,377 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:32,378 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:32,378 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:32,379 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:32,381 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:32,381 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:32,381 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:32,382 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:32,382 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:32,383 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:32,384 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:32,384 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:32,384 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:32,385 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:32,387 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:32,387 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:32,388 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:32,389 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:32,389 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:32,390 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:32,391 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:32,392 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:32,392 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:32,392 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:32,393 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:32,394 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:32,395 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:32,395 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:32,396 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:32,397 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:32,397 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:32,398 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:32,398 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:32,398 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:32,399 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:32,399 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:32,399 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:32,400 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:32,400 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:32,402 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:32,402 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:32,402 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:32,403 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:32,404 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:32,404 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:32,404 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:32,405 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:32,405 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:32,405 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:32,406 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:32,408 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:32,408 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:32,408 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:32,409 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:32,410 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:32,410 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:32,512 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:41:32,512 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 63 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 28 case distinctions, treesize of input 130 treesize of output 372 [2022-03-03 19:41:33,041 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:41:33,041 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332079083] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:41:33,041 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:41:33,041 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-03 19:41:33,041 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265147940] [2022-03-03 19:41:33,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:41:33,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-03 19:41:33,041 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:41:33,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-03 19:41:33,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=450, Invalid=1806, Unknown=0, NotChecked=0, Total=2256 [2022-03-03 19:41:33,042 INFO L87 Difference]: Start difference. First operand 10777 states and 24346 transitions. Second operand has 48 states, 48 states have (on average 2.25) internal successors, (108), 47 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:41:43,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:41:43,511 INFO L93 Difference]: Finished difference Result 16482 states and 36607 transitions. [2022-03-03 19:41:43,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2022-03-03 19:41:43,512 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.25) internal successors, (108), 47 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-03-03 19:41:43,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:41:43,533 INFO L225 Difference]: With dead ends: 16482 [2022-03-03 19:41:43,533 INFO L226 Difference]: Without dead ends: 15997 [2022-03-03 19:41:43,535 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 52 SyntacticMatches, 7 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7667 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=3760, Invalid=21680, Unknown=0, NotChecked=0, Total=25440 [2022-03-03 19:41:43,535 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 711 mSDsluCounter, 2607 mSDsCounter, 0 mSdLazyCounter, 1474 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 2064 SdHoareTripleChecker+Invalid, 2476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 696 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:41:43,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [711 Valid, 2064 Invalid, 2476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1474 Invalid, 0 Unknown, 696 Unchecked, 1.3s Time] [2022-03-03 19:41:43,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15997 states. [2022-03-03 19:41:43,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15997 to 11355. [2022-03-03 19:41:43,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11355 states, 11354 states have (on average 2.2595561035758323) internal successors, (25655), 11354 states have internal predecessors, (25655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:41:43,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11355 states to 11355 states and 25655 transitions. [2022-03-03 19:41:43,709 INFO L78 Accepts]: Start accepts. Automaton has 11355 states and 25655 transitions. Word has length 39 [2022-03-03 19:41:43,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:41:43,709 INFO L470 AbstractCegarLoop]: Abstraction has 11355 states and 25655 transitions. [2022-03-03 19:41:43,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.25) internal successors, (108), 47 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:41:43,709 INFO L276 IsEmpty]: Start isEmpty. Operand 11355 states and 25655 transitions. [2022-03-03 19:41:43,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-03 19:41:43,715 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:41:43,715 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:41:43,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Forceful destruction successful, exit code 0 [2022-03-03 19:41:43,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106,104 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:41:43,928 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:41:43,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:41:43,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1924206786, now seen corresponding path program 102 times [2022-03-03 19:41:43,928 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:41:43,928 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139512047] [2022-03-03 19:41:43,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:41:43,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:41:43,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:41:44,327 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:41:44,328 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:41:44,328 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139512047] [2022-03-03 19:41:44,328 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139512047] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:41:44,328 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416717493] [2022-03-03 19:41:44,328 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:41:44,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:41:44,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:41:44,329 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:41:44,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2022-03-03 19:41:44,353 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-03-03 19:41:44,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:41:44,354 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 59 conjunts are in the unsatisfiable core [2022-03-03 19:41:44,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:41:44,926 INFO L353 Elim1Store]: treesize reduction 240, result has 0.4 percent of original size [2022-03-03 19:41:44,927 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 122 treesize of output 44 [2022-03-03 19:41:44,943 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:41:44,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:41:46,102 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-03-03 19:41:46,103 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 130 treesize of output 528 [2022-03-03 19:41:47,046 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 18 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:41:47,046 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416717493] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:41:47,046 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:41:47,046 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-03-03 19:41:47,046 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997135953] [2022-03-03 19:41:47,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:41:47,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-03-03 19:41:47,047 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:41:47,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-03-03 19:41:47,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=1241, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 19:41:47,047 INFO L87 Difference]: Start difference. First operand 11355 states and 25655 transitions. Second operand has 39 states, 39 states have (on average 2.128205128205128) internal successors, (83), 38 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:41:49,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:41:49,210 INFO L93 Difference]: Finished difference Result 16614 states and 37194 transitions. [2022-03-03 19:41:49,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-03-03 19:41:49,210 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.128205128205128) internal successors, (83), 38 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-03-03 19:41:49,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:41:49,235 INFO L225 Difference]: With dead ends: 16614 [2022-03-03 19:41:49,235 INFO L226 Difference]: Without dead ends: 16544 [2022-03-03 19:41:49,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 48 SyntacticMatches, 8 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1482 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1024, Invalid=5456, Unknown=0, NotChecked=0, Total=6480 [2022-03-03 19:41:49,236 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 264 mSDsluCounter, 1736 mSDsCounter, 0 mSdLazyCounter, 1585 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 1776 SdHoareTripleChecker+Invalid, 1658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 19:41:49,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 1776 Invalid, 1658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1585 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-03 19:41:49,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16544 states. [2022-03-03 19:41:49,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16544 to 11299. [2022-03-03 19:41:49,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11299 states, 11298 states have (on average 2.2590724021950788) internal successors, (25523), 11298 states have internal predecessors, (25523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:41:49,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11299 states to 11299 states and 25523 transitions. [2022-03-03 19:41:49,438 INFO L78 Accepts]: Start accepts. Automaton has 11299 states and 25523 transitions. Word has length 39 [2022-03-03 19:41:49,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:41:49,438 INFO L470 AbstractCegarLoop]: Abstraction has 11299 states and 25523 transitions. [2022-03-03 19:41:49,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.128205128205128) internal successors, (83), 38 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:41:49,439 INFO L276 IsEmpty]: Start isEmpty. Operand 11299 states and 25523 transitions. [2022-03-03 19:41:49,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-03-03 19:41:49,445 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:41:49,445 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:41:49,461 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Forceful destruction successful, exit code 0 [2022-03-03 19:41:49,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107,105 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:41:49,661 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:41:49,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:41:49,661 INFO L85 PathProgramCache]: Analyzing trace with hash -648973305, now seen corresponding path program 103 times [2022-03-03 19:41:49,661 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:41:49,661 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68935541] [2022-03-03 19:41:49,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:41:49,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:41:49,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:41:49,717 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 49 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:41:49,717 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:41:49,717 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68935541] [2022-03-03 19:41:49,717 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68935541] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:41:49,717 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253236292] [2022-03-03 19:41:49,717 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:41:49,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:41:49,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:41:49,719 INFO L229 MonitoredProcess]: Starting monitored process 106 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:41:49,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2022-03-03 19:41:49,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:41:49,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 16 conjunts are in the unsatisfiable core [2022-03-03 19:41:49,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:41:49,789 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 49 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:41:49,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:41:49,839 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 49 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:41:49,840 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253236292] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:41:49,840 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:41:49,840 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 10 [2022-03-03 19:41:49,840 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657168067] [2022-03-03 19:41:49,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:41:49,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-03 19:41:49,840 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:41:49,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-03 19:41:49,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:41:49,840 INFO L87 Difference]: Start difference. First operand 11299 states and 25523 transitions. Second operand has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 10 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) [2022-03-03 19:41:49,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:41:49,908 INFO L93 Difference]: Finished difference Result 14676 states and 33572 transitions. [2022-03-03 19:41:49,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-03 19:41:49,908 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 10 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 40 [2022-03-03 19:41:49,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:41:49,931 INFO L225 Difference]: With dead ends: 14676 [2022-03-03 19:41:49,931 INFO L226 Difference]: Without dead ends: 14668 [2022-03-03 19:41:49,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:41:49,931 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 107 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 19:41:49,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 100 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 19:41:49,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14668 states. [2022-03-03 19:41:50,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14668 to 13931. [2022-03-03 19:41:50,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13931 states, 13930 states have (on average 2.294974874371859) internal successors, (31969), 13930 states have internal predecessors, (31969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:41:50,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13931 states to 13931 states and 31969 transitions. [2022-03-03 19:41:50,158 INFO L78 Accepts]: Start accepts. Automaton has 13931 states and 31969 transitions. Word has length 40 [2022-03-03 19:41:50,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:41:50,158 INFO L470 AbstractCegarLoop]: Abstraction has 13931 states and 31969 transitions. [2022-03-03 19:41:50,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 10 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) [2022-03-03 19:41:50,159 INFO L276 IsEmpty]: Start isEmpty. Operand 13931 states and 31969 transitions. [2022-03-03 19:41:50,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-03-03 19:41:50,167 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:41:50,167 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:41:50,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Forceful destruction successful, exit code 0 [2022-03-03 19:41:50,382 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,SelfDestructingSolverStorable108 [2022-03-03 19:41:50,382 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:41:50,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:41:50,383 INFO L85 PathProgramCache]: Analyzing trace with hash -719883969, now seen corresponding path program 104 times [2022-03-03 19:41:50,383 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:41:50,383 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185463087] [2022-03-03 19:41:50,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:41:50,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:41:50,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:41:50,770 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:41:50,770 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:41:50,770 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185463087] [2022-03-03 19:41:50,770 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185463087] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:41:50,770 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149565793] [2022-03-03 19:41:50,770 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:41:50,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:41:50,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:41:50,772 INFO L229 MonitoredProcess]: Starting monitored process 107 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:41:50,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2022-03-03 19:41:50,795 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:41:50,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:41:50,796 WARN L261 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 57 conjunts are in the unsatisfiable core [2022-03-03 19:41:50,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:41:51,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:51,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:51,405 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:51,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:51,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:51,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:51,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:51,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:51,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:51,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:51,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:51,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:51,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:51,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:51,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:51,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:51,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:51,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:51,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:51,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:51,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:51,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:51,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:51,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:51,413 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:51,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:51,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:51,417 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 21 disjoint index pairs (out of 36 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 44 [2022-03-03 19:41:51,430 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:41:51,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:41:52,601 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-03-03 19:41:52,601 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 130 treesize of output 528 [2022-03-03 19:41:53,673 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 11 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:41:53,674 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149565793] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:41:53,674 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:41:53,674 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 17] total 39 [2022-03-03 19:41:53,674 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003570265] [2022-03-03 19:41:53,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:41:53,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-03-03 19:41:53,674 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:41:53,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-03-03 19:41:53,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=1300, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 19:41:53,674 INFO L87 Difference]: Start difference. First operand 13931 states and 31969 transitions. Second operand has 40 states, 40 states have (on average 2.45) internal successors, (98), 39 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:41:55,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:41:55,352 INFO L93 Difference]: Finished difference Result 23001 states and 52556 transitions. [2022-03-03 19:41:55,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-03-03 19:41:55,353 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.45) internal successors, (98), 39 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-03-03 19:41:55,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:41:55,385 INFO L225 Difference]: With dead ends: 23001 [2022-03-03 19:41:55,385 INFO L226 Difference]: Without dead ends: 22724 [2022-03-03 19:41:55,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 55 SyntacticMatches, 6 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1346 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=808, Invalid=4594, Unknown=0, NotChecked=0, Total=5402 [2022-03-03 19:41:55,386 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 326 mSDsluCounter, 1928 mSDsCounter, 0 mSdLazyCounter, 1236 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 1537 SdHoareTripleChecker+Invalid, 1714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 387 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 19:41:55,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [326 Valid, 1537 Invalid, 1714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1236 Invalid, 0 Unknown, 387 Unchecked, 0.5s Time] [2022-03-03 19:41:55,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22724 states. [2022-03-03 19:41:55,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22724 to 14127. [2022-03-03 19:41:55,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14127 states, 14126 states have (on average 2.288404360753221) internal successors, (32326), 14126 states have internal predecessors, (32326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:41:55,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14127 states to 14127 states and 32326 transitions. [2022-03-03 19:41:55,646 INFO L78 Accepts]: Start accepts. Automaton has 14127 states and 32326 transitions. Word has length 42 [2022-03-03 19:41:55,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:41:55,646 INFO L470 AbstractCegarLoop]: Abstraction has 14127 states and 32326 transitions. [2022-03-03 19:41:55,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.45) internal successors, (98), 39 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:41:55,646 INFO L276 IsEmpty]: Start isEmpty. Operand 14127 states and 32326 transitions. [2022-03-03 19:41:55,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-03-03 19:41:55,654 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:41:55,654 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:41:55,669 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Forceful destruction successful, exit code 0 [2022-03-03 19:41:55,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,107 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:41:55,856 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:41:55,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:41:55,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1921076959, now seen corresponding path program 105 times [2022-03-03 19:41:55,858 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:41:55,858 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464635178] [2022-03-03 19:41:55,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:41:55,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:41:55,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:41:56,262 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:41:56,262 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:41:56,262 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464635178] [2022-03-03 19:41:56,262 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464635178] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:41:56,262 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068471731] [2022-03-03 19:41:56,262 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:41:56,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:41:56,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:41:56,264 INFO L229 MonitoredProcess]: Starting monitored process 108 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:41:56,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2022-03-03 19:41:56,287 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-03-03 19:41:56,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:41:56,288 WARN L261 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 57 conjunts are in the unsatisfiable core [2022-03-03 19:41:56,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:41:56,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:56,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:56,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:56,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:56,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:56,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:56,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:56,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:56,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:56,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:56,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:56,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:56,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:56,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:56,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:56,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:56,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:56,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:56,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:56,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:56,952 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:41:56,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:56,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:56,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:56,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:41:56,954 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 21 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 44 [2022-03-03 19:41:56,967 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:41:56,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:41:57,914 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-03-03 19:41:57,914 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 130 treesize of output 528 [2022-03-03 19:41:59,359 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 12 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:41:59,359 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068471731] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:41:59,360 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:41:59,360 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 39 [2022-03-03 19:41:59,360 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541995579] [2022-03-03 19:41:59,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:41:59,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-03-03 19:41:59,360 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:41:59,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-03-03 19:41:59,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=1305, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 19:41:59,360 INFO L87 Difference]: Start difference. First operand 14127 states and 32326 transitions. Second operand has 40 states, 40 states have (on average 2.375) internal successors, (95), 39 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:41:59,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:41:59,913 INFO L93 Difference]: Finished difference Result 14637 states and 33389 transitions. [2022-03-03 19:41:59,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-03 19:41:59,913 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.375) internal successors, (95), 39 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-03-03 19:41:59,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:41:59,937 INFO L225 Difference]: With dead ends: 14637 [2022-03-03 19:41:59,937 INFO L226 Difference]: Without dead ends: 14630 [2022-03-03 19:41:59,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 56 SyntacticMatches, 7 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=389, Invalid=2161, Unknown=0, NotChecked=0, Total=2550 [2022-03-03 19:41:59,938 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 151 mSDsluCounter, 1292 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 1327 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 217 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:41:59,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 1327 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 294 Invalid, 0 Unknown, 217 Unchecked, 0.2s Time] [2022-03-03 19:41:59,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14630 states. [2022-03-03 19:42:00,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14630 to 14248. [2022-03-03 19:42:00,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14248 states, 14247 states have (on average 2.2910788236119886) internal successors, (32641), 14247 states have internal predecessors, (32641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:42:00,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14248 states to 14248 states and 32641 transitions. [2022-03-03 19:42:00,158 INFO L78 Accepts]: Start accepts. Automaton has 14248 states and 32641 transitions. Word has length 42 [2022-03-03 19:42:00,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:42:00,158 INFO L470 AbstractCegarLoop]: Abstraction has 14248 states and 32641 transitions. [2022-03-03 19:42:00,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.375) internal successors, (95), 39 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:42:00,158 INFO L276 IsEmpty]: Start isEmpty. Operand 14248 states and 32641 transitions. [2022-03-03 19:42:00,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-03-03 19:42:00,167 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:42:00,167 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:42:00,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Forceful destruction successful, exit code 0 [2022-03-03 19:42:00,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,108 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:42:00,376 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:42:00,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:42:00,376 INFO L85 PathProgramCache]: Analyzing trace with hash -913918449, now seen corresponding path program 106 times [2022-03-03 19:42:00,376 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:42:00,376 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482424770] [2022-03-03 19:42:00,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:42:00,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:42:00,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:42:00,862 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:42:00,862 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:42:00,862 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482424770] [2022-03-03 19:42:00,863 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482424770] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:42:00,863 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058978729] [2022-03-03 19:42:00,863 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:42:00,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:42:00,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:42:00,864 INFO L229 MonitoredProcess]: Starting monitored process 109 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:42:00,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2022-03-03 19:42:00,889 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:42:00,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:42:00,890 WARN L261 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 57 conjunts are in the unsatisfiable core [2022-03-03 19:42:00,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:42:01,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:01,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:01,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:01,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:01,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:01,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:01,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:01,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:01,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:01,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:01,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:01,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:01,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:01,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:01,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:01,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:01,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:01,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:01,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:01,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:01,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:01,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:01,703 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:01,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:01,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:01,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:01,705 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 21 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 44 [2022-03-03 19:42:01,738 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:42:01,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:42:03,095 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-03-03 19:42:03,096 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 130 treesize of output 528 [2022-03-03 19:42:04,042 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 14 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:42:04,042 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058978729] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:42:04,042 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:42:04,042 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 39 [2022-03-03 19:42:04,042 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350745137] [2022-03-03 19:42:04,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:42:04,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-03-03 19:42:04,048 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:42:04,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-03-03 19:42:04,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=1305, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 19:42:04,049 INFO L87 Difference]: Start difference. First operand 14248 states and 32641 transitions. Second operand has 40 states, 40 states have (on average 2.375) internal successors, (95), 39 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:42:06,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:42:06,372 INFO L93 Difference]: Finished difference Result 20753 states and 46931 transitions. [2022-03-03 19:42:06,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-03-03 19:42:06,373 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.375) internal successors, (95), 39 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-03-03 19:42:06,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:42:06,408 INFO L225 Difference]: With dead ends: 20753 [2022-03-03 19:42:06,409 INFO L226 Difference]: Without dead ends: 20651 [2022-03-03 19:42:06,410 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 57 SyntacticMatches, 7 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2811 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1536, Invalid=8564, Unknown=0, NotChecked=0, Total=10100 [2022-03-03 19:42:06,410 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 327 mSDsluCounter, 2161 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 2053 SdHoareTripleChecker+Invalid, 2116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 815 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 19:42:06,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [327 Valid, 2053 Invalid, 2116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1223 Invalid, 0 Unknown, 815 Unchecked, 0.6s Time] [2022-03-03 19:42:06,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20651 states. [2022-03-03 19:42:06,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20651 to 14230. [2022-03-03 19:42:06,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14230 states, 14229 states have (on average 2.2911659287370862) internal successors, (32601), 14229 states have internal predecessors, (32601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:42:06,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14230 states to 14230 states and 32601 transitions. [2022-03-03 19:42:06,704 INFO L78 Accepts]: Start accepts. Automaton has 14230 states and 32601 transitions. Word has length 42 [2022-03-03 19:42:06,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:42:06,705 INFO L470 AbstractCegarLoop]: Abstraction has 14230 states and 32601 transitions. [2022-03-03 19:42:06,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.375) internal successors, (95), 39 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:42:06,705 INFO L276 IsEmpty]: Start isEmpty. Operand 14230 states and 32601 transitions. [2022-03-03 19:42:06,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-03-03 19:42:06,713 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:42:06,713 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:42:06,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Forceful destruction successful, exit code 0 [2022-03-03 19:42:06,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111,109 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:42:06,929 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:42:06,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:42:06,930 INFO L85 PathProgramCache]: Analyzing trace with hash -621581526, now seen corresponding path program 107 times [2022-03-03 19:42:06,930 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:42:06,930 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788771961] [2022-03-03 19:42:06,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:42:06,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:42:06,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:42:07,271 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:42:07,272 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:42:07,272 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788771961] [2022-03-03 19:42:07,272 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788771961] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:42:07,272 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968415414] [2022-03-03 19:42:07,272 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:42:07,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:42:07,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:42:07,273 INFO L229 MonitoredProcess]: Starting monitored process 110 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:42:07,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2022-03-03 19:42:07,298 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-03-03 19:42:07,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:42:07,300 WARN L261 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 66 conjunts are in the unsatisfiable core [2022-03-03 19:42:07,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:42:08,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:08,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:08,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:08,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:08,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:08,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:08,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:08,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:08,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:08,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:08,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:08,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:08,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:08,383 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:08,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:08,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:08,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:08,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:08,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:08,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:08,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:08,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:08,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:08,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:08,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:08,389 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:08,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:08,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:08,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:08,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:08,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:08,392 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:08,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:08,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:08,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:08,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:08,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:08,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:08,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:08,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:08,400 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:08,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:08,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:08,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:08,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:08,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:08,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:08,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:08,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:08,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:08,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:08,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:08,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:08,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:08,423 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:08,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:08,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:08,425 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:08,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:08,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:08,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:08,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:08,428 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:08,428 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:08,429 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 16 select indices, 16 select index equivalence classes, 28 disjoint index pairs (out of 120 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 36 [2022-03-03 19:42:08,463 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:42:08,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:42:10,136 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,137 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,138 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,138 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,138 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,139 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,139 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,139 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,139 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,140 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,141 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,141 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,141 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,143 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,143 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,144 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,144 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,144 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,144 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,145 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,146 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,146 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,147 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,147 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,147 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,147 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,150 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,150 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,151 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,151 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,152 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,152 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,154 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,154 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,155 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,155 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,155 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,156 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,156 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,158 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,158 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,159 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,159 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,160 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,161 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,161 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,162 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,162 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,162 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,162 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,163 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,163 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,164 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,164 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,165 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,165 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,165 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,165 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,166 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,166 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,166 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,166 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,167 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,169 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,169 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,169 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,170 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,171 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,172 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,172 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,173 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,173 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,174 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,174 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,174 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,175 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,175 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,175 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,177 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,178 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,178 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,179 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,179 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,179 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:10,325 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:42:10,326 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 16 select indices, 16 select index equivalence classes, 84 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 36 case distinctions, treesize of input 148 treesize of output 472 [2022-03-03 19:42:11,667 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:42:11,667 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968415414] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:42:11,667 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:42:11,667 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 19] total 52 [2022-03-03 19:42:11,668 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937201154] [2022-03-03 19:42:11,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:42:11,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-03-03 19:42:11,668 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:42:11,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-03-03 19:42:11,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=516, Invalid=2240, Unknown=0, NotChecked=0, Total=2756 [2022-03-03 19:42:11,668 INFO L87 Difference]: Start difference. First operand 14230 states and 32601 transitions. Second operand has 53 states, 53 states have (on average 2.2641509433962264) internal successors, (120), 52 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:42:22,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:42:22,377 INFO L93 Difference]: Finished difference Result 29284 states and 66268 transitions. [2022-03-03 19:42:22,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-03-03 19:42:22,378 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.2641509433962264) internal successors, (120), 52 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-03-03 19:42:22,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:42:22,425 INFO L225 Difference]: With dead ends: 29284 [2022-03-03 19:42:22,426 INFO L226 Difference]: Without dead ends: 28769 [2022-03-03 19:42:22,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 51 SyntacticMatches, 10 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7596 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=3281, Invalid=21841, Unknown=0, NotChecked=0, Total=25122 [2022-03-03 19:42:22,427 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 718 mSDsluCounter, 3796 mSDsCounter, 0 mSdLazyCounter, 2262 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 718 SdHoareTripleChecker+Valid, 2962 SdHoareTripleChecker+Invalid, 3235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 2262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 781 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-03 19:42:22,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [718 Valid, 2962 Invalid, 3235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 2262 Invalid, 0 Unknown, 781 Unchecked, 1.4s Time] [2022-03-03 19:42:22,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28769 states. [2022-03-03 19:42:22,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28769 to 15815. [2022-03-03 19:42:22,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15815 states, 15814 states have (on average 2.2893006197040595) internal successors, (36203), 15814 states have internal predecessors, (36203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:42:22,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15815 states to 15815 states and 36203 transitions. [2022-03-03 19:42:22,727 INFO L78 Accepts]: Start accepts. Automaton has 15815 states and 36203 transitions. Word has length 43 [2022-03-03 19:42:22,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:42:22,727 INFO L470 AbstractCegarLoop]: Abstraction has 15815 states and 36203 transitions. [2022-03-03 19:42:22,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.2641509433962264) internal successors, (120), 52 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:42:22,728 INFO L276 IsEmpty]: Start isEmpty. Operand 15815 states and 36203 transitions. [2022-03-03 19:42:22,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-03-03 19:42:22,773 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:42:22,774 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:42:22,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Forceful destruction successful, exit code 0 [2022-03-03 19:42:22,983 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,SelfDestructingSolverStorable112 [2022-03-03 19:42:22,983 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:42:22,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:42:22,984 INFO L85 PathProgramCache]: Analyzing trace with hash 838390362, now seen corresponding path program 108 times [2022-03-03 19:42:22,984 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:42:22,984 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133126820] [2022-03-03 19:42:22,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:42:22,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:42:22,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:42:23,362 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:42:23,363 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:42:23,363 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133126820] [2022-03-03 19:42:23,363 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133126820] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:42:23,363 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316524207] [2022-03-03 19:42:23,363 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:42:23,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:42:23,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:42:23,364 INFO L229 MonitoredProcess]: Starting monitored process 111 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:42:23,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2022-03-03 19:42:23,391 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-03-03 19:42:23,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:42:23,392 WARN L261 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 65 conjunts are in the unsatisfiable core [2022-03-03 19:42:23,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:42:24,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:24,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:24,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:24,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:24,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:24,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:24,305 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:24,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:24,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:24,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:24,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:24,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:24,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:24,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:24,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:24,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:24,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:24,310 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:24,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:24,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:24,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:24,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:24,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:24,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:24,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:24,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:24,314 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:24,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:24,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:24,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:24,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:24,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:24,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:24,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:24,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:24,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:24,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:24,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:24,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:24,320 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:24,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:24,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:24,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:24,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:24,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:24,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:24,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:24,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:24,324 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:24,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:24,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:24,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:24,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:24,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:24,326 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:24,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:24,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:24,327 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:24,328 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 15 select indices, 15 select index equivalence classes, 28 disjoint index pairs (out of 105 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 49 [2022-03-03 19:42:24,342 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:42:24,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:42:26,044 INFO L353 Elim1Store]: treesize reduction 756, result has 45.3 percent of original size [2022-03-03 19:42:26,045 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 148 treesize of output 682 [2022-03-03 19:42:28,004 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 12 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:42:28,004 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316524207] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:42:28,004 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:42:28,004 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 19] total 49 [2022-03-03 19:42:28,004 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800133302] [2022-03-03 19:42:28,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:42:28,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-03-03 19:42:28,004 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:42:28,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-03-03 19:42:28,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=2090, Unknown=0, NotChecked=0, Total=2450 [2022-03-03 19:42:28,005 INFO L87 Difference]: Start difference. First operand 15815 states and 36203 transitions. Second operand has 50 states, 50 states have (on average 2.26) internal successors, (113), 49 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:42:33,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:42:33,096 INFO L93 Difference]: Finished difference Result 31127 states and 70286 transitions. [2022-03-03 19:42:33,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2022-03-03 19:42:33,096 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.26) internal successors, (113), 49 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-03-03 19:42:33,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:42:33,148 INFO L225 Difference]: With dead ends: 31127 [2022-03-03 19:42:33,148 INFO L226 Difference]: Without dead ends: 31059 [2022-03-03 19:42:33,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7121 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=2862, Invalid=18018, Unknown=0, NotChecked=0, Total=20880 [2022-03-03 19:42:33,150 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 386 mSDsluCounter, 2924 mSDsCounter, 0 mSdLazyCounter, 1948 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 2789 SdHoareTripleChecker+Invalid, 2368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 317 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:42:33,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [386 Valid, 2789 Invalid, 2368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1948 Invalid, 0 Unknown, 317 Unchecked, 1.1s Time] [2022-03-03 19:42:33,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31059 states. [2022-03-03 19:42:33,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31059 to 15572. [2022-03-03 19:42:33,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15572 states, 15571 states have (on average 2.2897694431956843) internal successors, (35654), 15571 states have internal predecessors, (35654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:42:33,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15572 states to 15572 states and 35654 transitions. [2022-03-03 19:42:33,479 INFO L78 Accepts]: Start accepts. Automaton has 15572 states and 35654 transitions. Word has length 43 [2022-03-03 19:42:33,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:42:33,479 INFO L470 AbstractCegarLoop]: Abstraction has 15572 states and 35654 transitions. [2022-03-03 19:42:33,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.26) internal successors, (113), 49 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:42:33,479 INFO L276 IsEmpty]: Start isEmpty. Operand 15572 states and 35654 transitions. [2022-03-03 19:42:33,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-03-03 19:42:33,487 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:42:33,487 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:42:33,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Forceful destruction successful, exit code 0 [2022-03-03 19:42:33,691 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,SelfDestructingSolverStorable113 [2022-03-03 19:42:33,692 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:42:33,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:42:33,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1774399994, now seen corresponding path program 109 times [2022-03-03 19:42:33,692 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:42:33,692 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691544410] [2022-03-03 19:42:33,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:42:33,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:42:33,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:42:34,105 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:42:34,105 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:42:34,105 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691544410] [2022-03-03 19:42:34,105 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691544410] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:42:34,105 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773696586] [2022-03-03 19:42:34,105 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:42:34,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:42:34,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:42:34,107 INFO L229 MonitoredProcess]: Starting monitored process 112 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:42:34,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2022-03-03 19:42:34,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:42:34,130 WARN L261 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 65 conjunts are in the unsatisfiable core [2022-03-03 19:42:34,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:42:35,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:35,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:35,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:35,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:35,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:35,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:35,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:35,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:35,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:35,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:35,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:35,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:35,206 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:35,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:35,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:35,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:35,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:35,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:35,210 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:35,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:35,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:35,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:35,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:35,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:35,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:35,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:35,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:35,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:35,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:35,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:35,226 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:35,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:35,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:35,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:35,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:35,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:35,229 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:35,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:35,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:35,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:35,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:35,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:35,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:35,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:35,233 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:35,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:35,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:35,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:35,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:35,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:35,236 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:35,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:35,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:35,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:35,238 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:35,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:35,239 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 15 select indices, 15 select index equivalence classes, 28 disjoint index pairs (out of 105 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 49 [2022-03-03 19:42:35,256 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:42:35,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:42:37,171 INFO L353 Elim1Store]: treesize reduction 756, result has 45.3 percent of original size [2022-03-03 19:42:37,172 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 148 treesize of output 682 [2022-03-03 19:42:39,503 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 6 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:42:39,503 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773696586] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:42:39,503 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:42:39,503 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 50 [2022-03-03 19:42:39,503 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989076102] [2022-03-03 19:42:39,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:42:39,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-03-03 19:42:39,503 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:42:39,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-03-03 19:42:39,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=369, Invalid=2181, Unknown=0, NotChecked=0, Total=2550 [2022-03-03 19:42:39,504 INFO L87 Difference]: Start difference. First operand 15572 states and 35654 transitions. Second operand has 51 states, 51 states have (on average 2.215686274509804) internal successors, (113), 50 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:42:41,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:42:41,999 INFO L93 Difference]: Finished difference Result 29929 states and 68119 transitions. [2022-03-03 19:42:41,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-03-03 19:42:41,999 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.215686274509804) internal successors, (113), 50 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-03-03 19:42:41,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:42:42,046 INFO L225 Difference]: With dead ends: 29929 [2022-03-03 19:42:42,046 INFO L226 Difference]: Without dead ends: 29517 [2022-03-03 19:42:42,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2509 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1350, Invalid=7206, Unknown=0, NotChecked=0, Total=8556 [2022-03-03 19:42:42,047 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 633 mSDsluCounter, 1951 mSDsCounter, 0 mSdLazyCounter, 1206 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 1585 SdHoareTripleChecker+Invalid, 1717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 1206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 355 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 19:42:42,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [633 Valid, 1585 Invalid, 1717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 1206 Invalid, 0 Unknown, 355 Unchecked, 0.7s Time] [2022-03-03 19:42:42,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29517 states. [2022-03-03 19:42:42,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29517 to 13451. [2022-03-03 19:42:42,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13451 states, 13450 states have (on average 2.275910780669145) internal successors, (30611), 13450 states have internal predecessors, (30611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:42:42,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13451 states to 13451 states and 30611 transitions. [2022-03-03 19:42:42,348 INFO L78 Accepts]: Start accepts. Automaton has 13451 states and 30611 transitions. Word has length 43 [2022-03-03 19:42:42,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:42:42,348 INFO L470 AbstractCegarLoop]: Abstraction has 13451 states and 30611 transitions. [2022-03-03 19:42:42,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.215686274509804) internal successors, (113), 50 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:42:42,348 INFO L276 IsEmpty]: Start isEmpty. Operand 13451 states and 30611 transitions. [2022-03-03 19:42:42,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-03-03 19:42:42,355 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:42:42,355 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:42:42,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Forceful destruction successful, exit code 0 [2022-03-03 19:42:42,557 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,SelfDestructingSolverStorable114 [2022-03-03 19:42:42,558 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:42:42,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:42:42,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1060595414, now seen corresponding path program 110 times [2022-03-03 19:42:42,559 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:42:42,559 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899869099] [2022-03-03 19:42:42,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:42:42,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:42:42,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:42:42,858 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:42:42,858 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:42:42,858 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899869099] [2022-03-03 19:42:42,858 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899869099] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:42:42,858 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742589602] [2022-03-03 19:42:42,858 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:42:42,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:42:42,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:42:42,859 INFO L229 MonitoredProcess]: Starting monitored process 113 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:42:42,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2022-03-03 19:42:42,880 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:42:42,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:42:42,881 WARN L261 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 65 conjunts are in the unsatisfiable core [2022-03-03 19:42:42,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:42:43,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:43,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:43,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:43,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:43,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:43,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:43,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:43,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:43,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:43,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:43,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:43,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:43,725 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:43,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:43,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:43,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:43,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:43,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:43,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:43,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:43,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:43,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:43,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:43,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:43,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:43,730 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:43,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:43,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:43,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:43,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:43,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:43,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:43,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:43,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:43,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:43,734 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:43,734 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:43,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:43,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:43,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:43,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:43,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:43,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:43,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:43,737 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:43,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:43,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:43,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:43,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:43,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:43,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:43,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:43,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:43,741 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:43,741 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:43,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:43,742 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 15 select indices, 15 select index equivalence classes, 28 disjoint index pairs (out of 105 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 49 [2022-03-03 19:42:43,754 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:42:43,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:42:45,571 INFO L353 Elim1Store]: treesize reduction 756, result has 45.3 percent of original size [2022-03-03 19:42:45,572 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 148 treesize of output 682 [2022-03-03 19:42:48,104 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 9 proven. 103 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:42:48,104 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742589602] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:42:48,104 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:42:48,104 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 50 [2022-03-03 19:42:48,104 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20174434] [2022-03-03 19:42:48,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:42:48,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-03-03 19:42:48,105 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:42:48,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-03-03 19:42:48,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=368, Invalid=2182, Unknown=0, NotChecked=0, Total=2550 [2022-03-03 19:42:48,105 INFO L87 Difference]: Start difference. First operand 13451 states and 30611 transitions. Second operand has 51 states, 51 states have (on average 2.215686274509804) internal successors, (113), 50 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:42:51,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:42:51,639 INFO L93 Difference]: Finished difference Result 25886 states and 58270 transitions. [2022-03-03 19:42:51,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-03-03 19:42:51,640 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.215686274509804) internal successors, (113), 50 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-03-03 19:42:51,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:42:51,687 INFO L225 Difference]: With dead ends: 25886 [2022-03-03 19:42:51,687 INFO L226 Difference]: Without dead ends: 25833 [2022-03-03 19:42:51,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4190 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1899, Invalid=11441, Unknown=0, NotChecked=0, Total=13340 [2022-03-03 19:42:51,688 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 464 mSDsluCounter, 1961 mSDsCounter, 0 mSdLazyCounter, 1210 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 1915 SdHoareTripleChecker+Invalid, 1795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 1210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 440 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 19:42:51,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [464 Valid, 1915 Invalid, 1795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 1210 Invalid, 0 Unknown, 440 Unchecked, 0.8s Time] [2022-03-03 19:42:51,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25833 states. [2022-03-03 19:42:51,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25833 to 12734. [2022-03-03 19:42:51,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12734 states, 12733 states have (on average 2.2737768004398022) internal successors, (28952), 12733 states have internal predecessors, (28952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:42:51,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12734 states to 12734 states and 28952 transitions. [2022-03-03 19:42:51,997 INFO L78 Accepts]: Start accepts. Automaton has 12734 states and 28952 transitions. Word has length 43 [2022-03-03 19:42:51,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:42:51,997 INFO L470 AbstractCegarLoop]: Abstraction has 12734 states and 28952 transitions. [2022-03-03 19:42:51,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.215686274509804) internal successors, (113), 50 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:42:51,998 INFO L276 IsEmpty]: Start isEmpty. Operand 12734 states and 28952 transitions. [2022-03-03 19:42:52,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-03-03 19:42:52,005 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:42:52,005 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:42:52,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Forceful destruction successful, exit code 0 [2022-03-03 19:42:52,221 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,SelfDestructingSolverStorable115 [2022-03-03 19:42:52,222 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:42:52,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:42:52,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1973677926, now seen corresponding path program 111 times [2022-03-03 19:42:52,222 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:42:52,222 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152773979] [2022-03-03 19:42:52,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:42:52,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:42:52,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:42:52,604 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:42:52,604 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:42:52,605 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152773979] [2022-03-03 19:42:52,605 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152773979] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:42:52,605 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412583132] [2022-03-03 19:42:52,605 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:42:52,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:42:52,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:42:52,606 INFO L229 MonitoredProcess]: Starting monitored process 114 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:42:52,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2022-03-03 19:42:52,637 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-03-03 19:42:52,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:42:52,642 WARN L261 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 65 conjunts are in the unsatisfiable core [2022-03-03 19:42:52,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:42:53,673 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:53,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:53,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:53,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:53,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:53,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:53,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:53,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:53,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:53,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:53,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:53,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:53,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:53,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:53,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:53,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:53,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:53,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:53,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:53,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:53,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:53,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:53,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:53,684 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:53,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:53,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:53,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:53,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:53,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:53,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:53,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:53,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:53,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:53,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:53,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:53,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:53,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:53,690 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:53,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:53,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:53,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:53,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:53,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:53,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:53,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:53,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:53,694 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:53,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:53,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:53,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:53,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:53,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:53,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:53,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:53,698 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:53,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:53,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:53,699 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:53,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:53,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:42:53,700 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:42:53,700 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 15 select indices, 15 select index equivalence classes, 28 disjoint index pairs (out of 105 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 49 [2022-03-03 19:42:53,713 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:42:53,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:42:55,303 INFO L353 Elim1Store]: treesize reduction 756, result has 45.3 percent of original size [2022-03-03 19:42:55,304 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 148 treesize of output 682 [2022-03-03 19:42:57,592 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 9 proven. 103 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:42:57,592 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412583132] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:42:57,592 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:42:57,592 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 50 [2022-03-03 19:42:57,592 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744078371] [2022-03-03 19:42:57,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:42:57,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-03-03 19:42:57,592 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:42:57,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-03-03 19:42:57,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=372, Invalid=2178, Unknown=0, NotChecked=0, Total=2550 [2022-03-03 19:42:57,593 INFO L87 Difference]: Start difference. First operand 12734 states and 28952 transitions. Second operand has 51 states, 51 states have (on average 2.215686274509804) internal successors, (113), 50 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:42:59,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:42:59,901 INFO L93 Difference]: Finished difference Result 18676 states and 41880 transitions. [2022-03-03 19:42:59,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-03-03 19:42:59,901 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.215686274509804) internal successors, (113), 50 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-03-03 19:42:59,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:42:59,930 INFO L225 Difference]: With dead ends: 18676 [2022-03-03 19:42:59,930 INFO L226 Difference]: Without dead ends: 18639 [2022-03-03 19:42:59,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2731 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1309, Invalid=8003, Unknown=0, NotChecked=0, Total=9312 [2022-03-03 19:42:59,931 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 370 mSDsluCounter, 1623 mSDsCounter, 0 mSdLazyCounter, 965 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 1615 SdHoareTripleChecker+Invalid, 1432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 363 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 19:42:59,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [370 Valid, 1615 Invalid, 1432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 965 Invalid, 0 Unknown, 363 Unchecked, 0.6s Time] [2022-03-03 19:42:59,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18639 states. [2022-03-03 19:43:00,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18639 to 13208. [2022-03-03 19:43:00,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13208 states, 13207 states have (on average 2.2704626334519573) internal successors, (29986), 13207 states have internal predecessors, (29986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:43:00,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13208 states to 13208 states and 29986 transitions. [2022-03-03 19:43:00,168 INFO L78 Accepts]: Start accepts. Automaton has 13208 states and 29986 transitions. Word has length 43 [2022-03-03 19:43:00,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:43:00,168 INFO L470 AbstractCegarLoop]: Abstraction has 13208 states and 29986 transitions. [2022-03-03 19:43:00,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.215686274509804) internal successors, (113), 50 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:43:00,168 INFO L276 IsEmpty]: Start isEmpty. Operand 13208 states and 29986 transitions. [2022-03-03 19:43:00,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-03-03 19:43:00,176 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:43:00,177 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:43:00,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Forceful destruction successful, exit code 0 [2022-03-03 19:43:00,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116,114 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:43:00,392 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:43:00,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:43:00,392 INFO L85 PathProgramCache]: Analyzing trace with hash -268972998, now seen corresponding path program 112 times [2022-03-03 19:43:00,392 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:43:00,393 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711247538] [2022-03-03 19:43:00,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:43:00,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:43:00,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:43:00,858 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 109 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-03 19:43:00,859 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:43:00,859 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711247538] [2022-03-03 19:43:00,859 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711247538] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:43:00,859 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660226319] [2022-03-03 19:43:00,859 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:43:00,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:43:00,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:43:00,861 INFO L229 MonitoredProcess]: Starting monitored process 115 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:43:00,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2022-03-03 19:43:00,884 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:43:00,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:43:00,885 WARN L261 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 65 conjunts are in the unsatisfiable core [2022-03-03 19:43:00,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:43:01,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:01,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:01,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:01,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:01,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:01,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:01,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:01,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:01,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:01,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:01,983 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:43:01,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:01,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:01,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:01,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:01,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:01,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:01,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:01,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:01,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:01,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:01,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:01,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:01,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:01,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:01,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:01,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:01,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:01,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:01,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:01,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:01,995 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:43:01,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:01,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:01,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:01,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:01,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:01,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:02,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:02,000 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:43:02,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:02,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:02,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:02,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:02,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:02,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:02,004 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:43:02,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:02,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:02,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:02,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:02,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:02,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:02,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:02,008 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:43:02,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:02,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:02,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:02,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:02,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:02,011 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:43:02,012 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:43:02,012 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 15 select indices, 15 select index equivalence classes, 28 disjoint index pairs (out of 105 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 49 [2022-03-03 19:43:02,032 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 3 proven. 109 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:43:02,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:43:03,917 INFO L353 Elim1Store]: treesize reduction 756, result has 45.3 percent of original size [2022-03-03 19:43:03,917 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 148 treesize of output 682 [2022-03-03 19:43:04,960 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 12 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:43:04,960 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660226319] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:43:04,960 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:43:04,960 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 19] total 49 [2022-03-03 19:43:04,960 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306511917] [2022-03-03 19:43:04,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:43:04,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-03-03 19:43:04,961 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:43:04,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-03-03 19:43:04,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=369, Invalid=2081, Unknown=0, NotChecked=0, Total=2450 [2022-03-03 19:43:04,961 INFO L87 Difference]: Start difference. First operand 13208 states and 29986 transitions. Second operand has 50 states, 50 states have (on average 2.22) internal successors, (111), 49 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:43:09,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:43:09,563 INFO L93 Difference]: Finished difference Result 21857 states and 48830 transitions. [2022-03-03 19:43:09,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-03-03 19:43:09,564 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.22) internal successors, (111), 49 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-03-03 19:43:09,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:43:09,595 INFO L225 Difference]: With dead ends: 21857 [2022-03-03 19:43:09,595 INFO L226 Difference]: Without dead ends: 20821 [2022-03-03 19:43:09,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 52 SyntacticMatches, 3 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5466 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=2203, Invalid=14309, Unknown=0, NotChecked=0, Total=16512 [2022-03-03 19:43:09,597 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 639 mSDsluCounter, 3513 mSDsCounter, 0 mSdLazyCounter, 2130 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 2259 SdHoareTripleChecker+Invalid, 2941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 2130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 668 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:43:09,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [639 Valid, 2259 Invalid, 2941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 2130 Invalid, 0 Unknown, 668 Unchecked, 1.2s Time] [2022-03-03 19:43:09,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20821 states. [2022-03-03 19:43:09,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20821 to 13850. [2022-03-03 19:43:09,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13850 states, 13849 states have (on average 2.274243627698751) internal successors, (31496), 13849 states have internal predecessors, (31496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:43:09,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13850 states to 13850 states and 31496 transitions. [2022-03-03 19:43:09,866 INFO L78 Accepts]: Start accepts. Automaton has 13850 states and 31496 transitions. Word has length 43 [2022-03-03 19:43:09,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:43:09,866 INFO L470 AbstractCegarLoop]: Abstraction has 13850 states and 31496 transitions. [2022-03-03 19:43:09,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.22) internal successors, (111), 49 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:43:09,866 INFO L276 IsEmpty]: Start isEmpty. Operand 13850 states and 31496 transitions. [2022-03-03 19:43:09,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-03-03 19:43:09,875 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:43:09,875 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:43:09,890 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Ended with exit code 0 [2022-03-03 19:43:10,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117,115 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:43:10,093 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:43:10,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:43:10,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1190998890, now seen corresponding path program 113 times [2022-03-03 19:43:10,093 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:43:10,093 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480342376] [2022-03-03 19:43:10,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:43:10,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:43:10,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:43:10,478 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:43:10,478 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:43:10,478 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480342376] [2022-03-03 19:43:10,478 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480342376] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:43:10,478 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593351357] [2022-03-03 19:43:10,478 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:43:10,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:43:10,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:43:10,480 INFO L229 MonitoredProcess]: Starting monitored process 116 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:43:10,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2022-03-03 19:43:10,511 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-03-03 19:43:10,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:43:10,517 WARN L261 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 65 conjunts are in the unsatisfiable core [2022-03-03 19:43:10,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:43:11,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:11,589 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:43:11,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:11,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:11,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:11,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:11,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:11,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:11,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:11,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:11,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:11,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:11,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:11,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:11,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:11,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:11,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:11,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:11,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:11,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:11,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:11,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:11,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:11,598 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:43:11,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:11,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:11,599 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:43:11,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:11,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:11,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:11,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:11,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:11,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:11,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:11,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:11,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:11,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:11,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:11,603 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:43:11,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:11,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:11,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:11,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:11,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:11,605 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:43:11,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:11,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:11,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:11,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:11,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:11,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:11,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:11,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:11,609 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:43:11,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:11,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:11,610 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:43:11,610 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 15 select indices, 15 select index equivalence classes, 28 disjoint index pairs (out of 105 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 49 [2022-03-03 19:43:11,623 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:43:11,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:43:12,994 INFO L353 Elim1Store]: treesize reduction 756, result has 45.3 percent of original size [2022-03-03 19:43:12,994 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 148 treesize of output 682 [2022-03-03 19:43:14,523 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 12 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:43:14,523 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593351357] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:43:14,523 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:43:14,523 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 50 [2022-03-03 19:43:14,523 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804541619] [2022-03-03 19:43:14,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:43:14,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-03-03 19:43:14,523 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:43:14,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-03-03 19:43:14,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=374, Invalid=2176, Unknown=0, NotChecked=0, Total=2550 [2022-03-03 19:43:14,524 INFO L87 Difference]: Start difference. First operand 13850 states and 31496 transitions. Second operand has 51 states, 51 states have (on average 2.215686274509804) internal successors, (113), 50 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:43:15,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:43:15,147 INFO L93 Difference]: Finished difference Result 14553 states and 32950 transitions. [2022-03-03 19:43:15,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-03 19:43:15,147 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.215686274509804) internal successors, (113), 50 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-03-03 19:43:15,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:43:15,166 INFO L225 Difference]: With dead ends: 14553 [2022-03-03 19:43:15,166 INFO L226 Difference]: Without dead ends: 14540 [2022-03-03 19:43:15,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1080 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=537, Invalid=3245, Unknown=0, NotChecked=0, Total=3782 [2022-03-03 19:43:15,167 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 184 mSDsluCounter, 1629 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 1639 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 246 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:43:15,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 1639 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 296 Invalid, 0 Unknown, 246 Unchecked, 0.1s Time] [2022-03-03 19:43:15,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14540 states. [2022-03-03 19:43:15,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14540 to 14057. [2022-03-03 19:43:15,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14057 states, 14056 states have (on average 2.2771770062606715) internal successors, (32008), 14056 states have internal predecessors, (32008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:43:15,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14057 states to 14057 states and 32008 transitions. [2022-03-03 19:43:15,415 INFO L78 Accepts]: Start accepts. Automaton has 14057 states and 32008 transitions. Word has length 43 [2022-03-03 19:43:15,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:43:15,416 INFO L470 AbstractCegarLoop]: Abstraction has 14057 states and 32008 transitions. [2022-03-03 19:43:15,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.215686274509804) internal successors, (113), 50 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:43:15,416 INFO L276 IsEmpty]: Start isEmpty. Operand 14057 states and 32008 transitions. [2022-03-03 19:43:15,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-03-03 19:43:15,422 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:43:15,423 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:43:15,438 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Forceful destruction successful, exit code 0 [2022-03-03 19:43:15,638 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,SelfDestructingSolverStorable118 [2022-03-03 19:43:15,638 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:43:15,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:43:15,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1138183082, now seen corresponding path program 114 times [2022-03-03 19:43:15,640 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:43:15,640 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969008447] [2022-03-03 19:43:15,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:43:15,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:43:15,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:43:15,914 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-03 19:43:15,914 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:43:15,914 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969008447] [2022-03-03 19:43:15,914 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969008447] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:43:15,914 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064852549] [2022-03-03 19:43:15,914 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:43:15,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:43:15,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:43:15,919 INFO L229 MonitoredProcess]: Starting monitored process 117 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:43:15,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2022-03-03 19:43:15,958 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-03-03 19:43:15,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:43:15,959 WARN L261 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 65 conjunts are in the unsatisfiable core [2022-03-03 19:43:15,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:43:16,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:16,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:16,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:16,927 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:43:16,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:16,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:16,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:16,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:16,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:16,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:16,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:16,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:16,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:16,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:16,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:16,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:16,934 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:43:16,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:16,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:16,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:16,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:16,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:16,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:16,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:16,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:16,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:16,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:16,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:16,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:16,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:16,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:16,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:16,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:16,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:16,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:16,946 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:43:16,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:16,947 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:43:16,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:16,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:16,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:16,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:16,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:16,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:16,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:16,951 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:43:16,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:16,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:16,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:16,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:16,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:16,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:16,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:16,956 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:43:16,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:16,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:16,957 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:43:16,958 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 15 select indices, 15 select index equivalence classes, 28 disjoint index pairs (out of 105 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 49 [2022-03-03 19:43:16,979 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 4 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:43:16,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:43:18,863 INFO L353 Elim1Store]: treesize reduction 756, result has 45.3 percent of original size [2022-03-03 19:43:18,864 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 148 treesize of output 682 [2022-03-03 19:43:22,818 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 18 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:43:22,818 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064852549] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:43:22,818 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:43:22,818 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 19, 19] total 46 [2022-03-03 19:43:22,818 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353814960] [2022-03-03 19:43:22,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:43:22,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-03 19:43:22,818 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:43:22,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-03 19:43:22,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=1795, Unknown=0, NotChecked=0, Total=2162 [2022-03-03 19:43:22,819 INFO L87 Difference]: Start difference. First operand 14057 states and 32008 transitions. Second operand has 47 states, 47 states have (on average 2.3404255319148937) internal successors, (110), 46 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:43:25,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:43:25,063 INFO L93 Difference]: Finished difference Result 16995 states and 38199 transitions. [2022-03-03 19:43:25,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-03 19:43:25,063 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.3404255319148937) internal successors, (110), 46 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-03-03 19:43:25,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:43:25,088 INFO L225 Difference]: With dead ends: 16995 [2022-03-03 19:43:25,088 INFO L226 Difference]: Without dead ends: 16595 [2022-03-03 19:43:25,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 54 SyntacticMatches, 4 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1390 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=775, Invalid=4055, Unknown=0, NotChecked=0, Total=4830 [2022-03-03 19:43:25,090 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 497 mSDsluCounter, 2654 mSDsCounter, 0 mSdLazyCounter, 1869 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 1877 SdHoareTripleChecker+Invalid, 2180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 194 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-03 19:43:25,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [497 Valid, 1877 Invalid, 2180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1869 Invalid, 0 Unknown, 194 Unchecked, 1.0s Time] [2022-03-03 19:43:25,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16595 states. [2022-03-03 19:43:25,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16595 to 14528. [2022-03-03 19:43:25,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14528 states, 14527 states have (on average 2.278928891030495) internal successors, (33106), 14527 states have internal predecessors, (33106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:43:25,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14528 states to 14528 states and 33106 transitions. [2022-03-03 19:43:25,301 INFO L78 Accepts]: Start accepts. Automaton has 14528 states and 33106 transitions. Word has length 43 [2022-03-03 19:43:25,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:43:25,301 INFO L470 AbstractCegarLoop]: Abstraction has 14528 states and 33106 transitions. [2022-03-03 19:43:25,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.3404255319148937) internal successors, (110), 46 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:43:25,301 INFO L276 IsEmpty]: Start isEmpty. Operand 14528 states and 33106 transitions. [2022-03-03 19:43:25,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-03-03 19:43:25,309 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:43:25,309 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:43:25,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Forceful destruction successful, exit code 0 [2022-03-03 19:43:25,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,117 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:43:25,514 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:43:25,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:43:25,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1232090406, now seen corresponding path program 115 times [2022-03-03 19:43:25,515 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:43:25,515 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403303001] [2022-03-03 19:43:25,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:43:25,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:43:25,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:43:25,824 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:43:25,824 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:43:25,824 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403303001] [2022-03-03 19:43:25,824 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403303001] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:43:25,824 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557221876] [2022-03-03 19:43:25,824 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:43:25,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:43:25,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:43:25,825 INFO L229 MonitoredProcess]: Starting monitored process 118 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:43:25,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2022-03-03 19:43:25,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:43:25,849 WARN L261 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 65 conjunts are in the unsatisfiable core [2022-03-03 19:43:25,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:43:26,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:26,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:26,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:26,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:26,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:26,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:26,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:26,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:26,898 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:43:26,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:26,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:26,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:26,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:26,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:26,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:26,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:26,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:26,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:26,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:26,910 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:43:26,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:26,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:26,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:26,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:26,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:26,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:26,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:26,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:26,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:26,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:26,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:26,916 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:43:26,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:26,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:26,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:26,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:26,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:26,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:26,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:26,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:26,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:26,920 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:43:26,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:26,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:26,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:26,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:26,922 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:43:26,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:26,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:26,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:26,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:26,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:26,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:26,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:26,927 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:43:26,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:26,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:26,928 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:43:26,929 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 15 select indices, 15 select index equivalence classes, 28 disjoint index pairs (out of 105 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 49 [2022-03-03 19:43:26,943 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:43:26,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:43:28,282 INFO L353 Elim1Store]: treesize reduction 756, result has 45.3 percent of original size [2022-03-03 19:43:28,282 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 148 treesize of output 682 [2022-03-03 19:43:30,039 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 18 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:43:30,039 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557221876] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:43:30,039 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:43:30,039 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 19, 19] total 47 [2022-03-03 19:43:30,039 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596264379] [2022-03-03 19:43:30,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:43:30,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-03 19:43:30,039 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:43:30,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-03 19:43:30,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=369, Invalid=1887, Unknown=0, NotChecked=0, Total=2256 [2022-03-03 19:43:30,040 INFO L87 Difference]: Start difference. First operand 14528 states and 33106 transitions. Second operand has 48 states, 48 states have (on average 2.3541666666666665) internal successors, (113), 47 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:43:31,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:43:31,888 INFO L93 Difference]: Finished difference Result 18318 states and 41228 transitions. [2022-03-03 19:43:31,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-03-03 19:43:31,888 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.3541666666666665) internal successors, (113), 47 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-03-03 19:43:31,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:43:31,917 INFO L225 Difference]: With dead ends: 18318 [2022-03-03 19:43:31,917 INFO L226 Difference]: Without dead ends: 18225 [2022-03-03 19:43:31,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 54 SyntacticMatches, 3 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1630 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=843, Invalid=4857, Unknown=0, NotChecked=0, Total=5700 [2022-03-03 19:43:31,918 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 376 mSDsluCounter, 1761 mSDsCounter, 0 mSdLazyCounter, 1344 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 1540 SdHoareTripleChecker+Invalid, 1591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 121 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 19:43:31,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [376 Valid, 1540 Invalid, 1591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1344 Invalid, 0 Unknown, 121 Unchecked, 0.7s Time] [2022-03-03 19:43:31,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18225 states. [2022-03-03 19:43:32,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18225 to 14432. [2022-03-03 19:43:32,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14432 states, 14431 states have (on average 2.2783590880742843) internal successors, (32879), 14431 states have internal predecessors, (32879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:43:32,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14432 states to 14432 states and 32879 transitions. [2022-03-03 19:43:32,196 INFO L78 Accepts]: Start accepts. Automaton has 14432 states and 32879 transitions. Word has length 43 [2022-03-03 19:43:32,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:43:32,197 INFO L470 AbstractCegarLoop]: Abstraction has 14432 states and 32879 transitions. [2022-03-03 19:43:32,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.3541666666666665) internal successors, (113), 47 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:43:32,197 INFO L276 IsEmpty]: Start isEmpty. Operand 14432 states and 32879 transitions. [2022-03-03 19:43:32,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-03-03 19:43:32,208 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:43:32,209 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:43:32,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Forceful destruction successful, exit code 0 [2022-03-03 19:43:32,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,118 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:43:32,424 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:43:32,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:43:32,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1098687706, now seen corresponding path program 116 times [2022-03-03 19:43:32,426 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:43:32,426 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081543499] [2022-03-03 19:43:32,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:43:32,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:43:32,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:43:32,789 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:43:32,789 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:43:32,789 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081543499] [2022-03-03 19:43:32,789 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081543499] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:43:32,789 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508188347] [2022-03-03 19:43:32,789 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:43:32,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:43:32,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:43:32,790 INFO L229 MonitoredProcess]: Starting monitored process 119 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:43:32,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Waiting until timeout for monitored process [2022-03-03 19:43:32,814 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:43:32,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:43:32,815 WARN L261 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 65 conjunts are in the unsatisfiable core [2022-03-03 19:43:32,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:43:33,854 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:43:33,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:33,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:33,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:33,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:33,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:33,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:33,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:33,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:33,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:33,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:33,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:33,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:33,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:33,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:33,860 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:43:33,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:33,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:33,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:33,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:33,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:33,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:33,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:33,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:33,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:33,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:33,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:33,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:33,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:33,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:33,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:33,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:33,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:33,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:33,868 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:43:33,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:33,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:33,870 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:43:33,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:33,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:33,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:33,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:33,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:33,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:33,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:33,873 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:43:33,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:33,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:33,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:33,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:33,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:33,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:33,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:33,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:33,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:33,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:33,877 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:43:33,878 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:43:33,878 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 15 select indices, 15 select index equivalence classes, 28 disjoint index pairs (out of 105 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 49 [2022-03-03 19:43:33,893 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:43:33,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:43:35,371 INFO L353 Elim1Store]: treesize reduction 756, result has 45.3 percent of original size [2022-03-03 19:43:35,371 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 148 treesize of output 682 [2022-03-03 19:43:37,357 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 18 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:43:37,357 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508188347] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:43:37,357 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:43:37,357 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 19] total 49 [2022-03-03 19:43:37,357 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361804354] [2022-03-03 19:43:37,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:43:37,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-03-03 19:43:37,357 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:43:37,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-03-03 19:43:37,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=2068, Unknown=0, NotChecked=0, Total=2450 [2022-03-03 19:43:37,358 INFO L87 Difference]: Start difference. First operand 14432 states and 32879 transitions. Second operand has 50 states, 50 states have (on average 2.26) internal successors, (113), 49 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:43:40,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:43:40,545 INFO L93 Difference]: Finished difference Result 21972 states and 49366 transitions. [2022-03-03 19:43:40,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-03-03 19:43:40,546 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.26) internal successors, (113), 49 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-03-03 19:43:40,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:43:40,580 INFO L225 Difference]: With dead ends: 21972 [2022-03-03 19:43:40,580 INFO L226 Difference]: Without dead ends: 21836 [2022-03-03 19:43:40,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 52 SyntacticMatches, 3 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2976 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1570, Invalid=8530, Unknown=0, NotChecked=0, Total=10100 [2022-03-03 19:43:40,582 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 348 mSDsluCounter, 2701 mSDsCounter, 0 mSdLazyCounter, 1823 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 2513 SdHoareTripleChecker+Invalid, 2252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 315 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-03 19:43:40,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [348 Valid, 2513 Invalid, 2252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1823 Invalid, 0 Unknown, 315 Unchecked, 1.0s Time] [2022-03-03 19:43:40,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21836 states. [2022-03-03 19:43:40,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21836 to 14330. [2022-03-03 19:43:40,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14330 states, 14329 states have (on average 2.2783167003977947) internal successors, (32646), 14329 states have internal predecessors, (32646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:43:40,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14330 states to 14330 states and 32646 transitions. [2022-03-03 19:43:40,842 INFO L78 Accepts]: Start accepts. Automaton has 14330 states and 32646 transitions. Word has length 43 [2022-03-03 19:43:40,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:43:40,842 INFO L470 AbstractCegarLoop]: Abstraction has 14330 states and 32646 transitions. [2022-03-03 19:43:40,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.26) internal successors, (113), 49 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:43:40,843 INFO L276 IsEmpty]: Start isEmpty. Operand 14330 states and 32646 transitions. [2022-03-03 19:43:40,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-03-03 19:43:40,850 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:43:40,851 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:43:40,866 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Ended with exit code 0 [2022-03-03 19:43:41,056 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,SelfDestructingSolverStorable121 [2022-03-03 19:43:41,057 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:43:41,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:43:41,057 INFO L85 PathProgramCache]: Analyzing trace with hash -996475174, now seen corresponding path program 117 times [2022-03-03 19:43:41,057 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:43:41,058 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017271830] [2022-03-03 19:43:41,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:43:41,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:43:41,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:43:41,413 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:43:41,413 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:43:41,413 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017271830] [2022-03-03 19:43:41,413 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017271830] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:43:41,413 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886780582] [2022-03-03 19:43:41,413 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:43:41,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:43:41,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:43:41,414 INFO L229 MonitoredProcess]: Starting monitored process 120 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:43:41,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process [2022-03-03 19:43:41,439 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-03-03 19:43:41,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:43:41,440 WARN L261 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 65 conjunts are in the unsatisfiable core [2022-03-03 19:43:41,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:43:42,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:42,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:42,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:42,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:42,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:42,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:42,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:42,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:42,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:42,462 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:43:42,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:42,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:42,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:42,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:42,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:42,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:42,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:42,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:42,466 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:43:42,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:42,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:42,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:42,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:42,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:42,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:42,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:42,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:42,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:42,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:42,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:42,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:42,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:42,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:42,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:42,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:42,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:42,474 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:43:42,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:42,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:42,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:42,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:42,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:42,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:42,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:42,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:42,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:42,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:42,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:42,479 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:43:42,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:42,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:42,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:42,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:42,481 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:43:42,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:42,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:42,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:42,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:42,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:42,483 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:43:42,483 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:43:42,484 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 15 select indices, 15 select index equivalence classes, 28 disjoint index pairs (out of 105 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 49 [2022-03-03 19:43:42,499 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:43:42,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:43:44,132 INFO L353 Elim1Store]: treesize reduction 756, result has 45.3 percent of original size [2022-03-03 19:43:44,132 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 148 treesize of output 682 [2022-03-03 19:43:45,828 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 18 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:43:45,829 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886780582] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:43:45,829 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:43:45,829 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 50 [2022-03-03 19:43:45,829 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28636641] [2022-03-03 19:43:45,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:43:45,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-03-03 19:43:45,829 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:43:45,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-03-03 19:43:45,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=2172, Unknown=0, NotChecked=0, Total=2550 [2022-03-03 19:43:45,830 INFO L87 Difference]: Start difference. First operand 14330 states and 32646 transitions. Second operand has 51 states, 51 states have (on average 2.215686274509804) internal successors, (113), 50 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:43:49,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:43:49,067 INFO L93 Difference]: Finished difference Result 20828 states and 46823 transitions. [2022-03-03 19:43:49,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-03-03 19:43:49,068 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.215686274509804) internal successors, (113), 50 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-03-03 19:43:49,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:43:49,096 INFO L225 Difference]: With dead ends: 20828 [2022-03-03 19:43:49,097 INFO L226 Difference]: Without dead ends: 20733 [2022-03-03 19:43:49,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3865 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1679, Invalid=10977, Unknown=0, NotChecked=0, Total=12656 [2022-03-03 19:43:49,098 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 370 mSDsluCounter, 2306 mSDsCounter, 0 mSdLazyCounter, 1448 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 2220 SdHoareTripleChecker+Invalid, 2197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 639 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-03 19:43:49,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [370 Valid, 2220 Invalid, 2197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1448 Invalid, 0 Unknown, 639 Unchecked, 0.9s Time] [2022-03-03 19:43:49,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20733 states. [2022-03-03 19:43:49,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20733 to 14388. [2022-03-03 19:43:49,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14388 states, 14387 states have (on average 2.2774032112323623) internal successors, (32765), 14387 states have internal predecessors, (32765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:43:49,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14388 states to 14388 states and 32765 transitions. [2022-03-03 19:43:49,371 INFO L78 Accepts]: Start accepts. Automaton has 14388 states and 32765 transitions. Word has length 43 [2022-03-03 19:43:49,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:43:49,371 INFO L470 AbstractCegarLoop]: Abstraction has 14388 states and 32765 transitions. [2022-03-03 19:43:49,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.215686274509804) internal successors, (113), 50 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:43:49,371 INFO L276 IsEmpty]: Start isEmpty. Operand 14388 states and 32765 transitions. [2022-03-03 19:43:49,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-03-03 19:43:49,379 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:43:49,379 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:43:49,396 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Forceful destruction successful, exit code 0 [2022-03-03 19:43:49,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2022-03-03 19:43:49,587 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:43:49,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:43:49,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1312980394, now seen corresponding path program 118 times [2022-03-03 19:43:49,588 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:43:49,588 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120839930] [2022-03-03 19:43:49,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:43:49,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:43:49,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:43:49,999 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:43:49,999 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:43:49,999 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120839930] [2022-03-03 19:43:49,999 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120839930] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:43:49,999 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433932320] [2022-03-03 19:43:49,999 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:43:49,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:43:49,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:43:50,000 INFO L229 MonitoredProcess]: Starting monitored process 121 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:43:50,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Waiting until timeout for monitored process [2022-03-03 19:43:50,024 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:43:50,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:43:50,026 WARN L261 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 65 conjunts are in the unsatisfiable core [2022-03-03 19:43:50,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:43:51,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:51,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:51,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:51,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:51,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:51,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:51,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:51,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:51,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:51,120 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:43:51,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:51,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:51,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:51,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:51,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:51,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:51,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:51,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:51,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:51,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:51,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:51,127 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:43:51,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:51,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:51,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:51,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:51,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:51,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:51,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:51,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:51,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:51,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:51,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:51,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:51,135 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:43:51,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:51,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:51,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:51,137 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:43:51,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:51,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:51,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:51,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:51,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:51,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:51,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:51,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:51,142 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:43:51,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:51,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:51,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:51,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:51,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:51,146 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:43:51,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 19:43:51,147 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:43:51,148 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 15 select indices, 15 select index equivalence classes, 28 disjoint index pairs (out of 105 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 49 [2022-03-03 19:43:51,168 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:43:51,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:43:52,814 INFO L353 Elim1Store]: treesize reduction 756, result has 45.3 percent of original size [2022-03-03 19:43:52,815 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 148 treesize of output 682 [2022-03-03 19:43:55,040 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 27 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:43:55,040 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433932320] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:43:55,040 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:43:55,040 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 50 [2022-03-03 19:43:55,040 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971907266] [2022-03-03 19:43:55,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:43:55,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-03-03 19:43:55,041 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:43:55,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-03-03 19:43:55,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=2168, Unknown=0, NotChecked=0, Total=2550 [2022-03-03 19:43:55,041 INFO L87 Difference]: Start difference. First operand 14388 states and 32765 transitions. Second operand has 51 states, 51 states have (on average 2.215686274509804) internal successors, (113), 50 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:43:58,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:43:58,879 INFO L93 Difference]: Finished difference Result 20298 states and 45651 transitions. [2022-03-03 19:43:58,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-03-03 19:43:58,879 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.215686274509804) internal successors, (113), 50 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-03-03 19:43:58,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:43:58,912 INFO L225 Difference]: With dead ends: 20298 [2022-03-03 19:43:58,912 INFO L226 Difference]: Without dead ends: 20240 [2022-03-03 19:43:58,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4594 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=2077, Invalid=13423, Unknown=0, NotChecked=0, Total=15500 [2022-03-03 19:43:58,914 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 309 mSDsluCounter, 2581 mSDsCounter, 0 mSdLazyCounter, 1961 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 2562 SdHoareTripleChecker+Invalid, 2870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 816 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:43:58,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [309 Valid, 2562 Invalid, 2870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1961 Invalid, 0 Unknown, 816 Unchecked, 1.2s Time] [2022-03-03 19:43:58,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20240 states. [2022-03-03 19:43:59,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20240 to 14340. [2022-03-03 19:43:59,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14340 states, 14339 states have (on average 2.2772857242485527) internal successors, (32654), 14339 states have internal predecessors, (32654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:43:59,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14340 states to 14340 states and 32654 transitions. [2022-03-03 19:43:59,153 INFO L78 Accepts]: Start accepts. Automaton has 14340 states and 32654 transitions. Word has length 43 [2022-03-03 19:43:59,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:43:59,153 INFO L470 AbstractCegarLoop]: Abstraction has 14340 states and 32654 transitions. [2022-03-03 19:43:59,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.215686274509804) internal successors, (113), 50 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:43:59,153 INFO L276 IsEmpty]: Start isEmpty. Operand 14340 states and 32654 transitions. [2022-03-03 19:43:59,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-03-03 19:43:59,161 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:43:59,161 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:43:59,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Forceful destruction successful, exit code 0 [2022-03-03 19:43:59,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 121 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2022-03-03 19:43:59,375 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:43:59,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:43:59,376 INFO L85 PathProgramCache]: Analyzing trace with hash 341180362, now seen corresponding path program 119 times [2022-03-03 19:43:59,376 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:43:59,376 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800004884] [2022-03-03 19:43:59,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:43:59,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:43:59,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:43:59,667 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:43:59,668 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:43:59,668 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800004884] [2022-03-03 19:43:59,668 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800004884] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:43:59,668 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188868680] [2022-03-03 19:43:59,668 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:43:59,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:43:59,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:43:59,669 INFO L229 MonitoredProcess]: Starting monitored process 122 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:43:59,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Waiting until timeout for monitored process [2022-03-03 19:43:59,703 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-03-03 19:43:59,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:43:59,708 WARN L261 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 59 conjunts are in the unsatisfiable core [2022-03-03 19:43:59,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:45:19,349 WARN L230 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2022-03-03 19:45:19,350 WARN L325 FreeRefinementEngine]: Global settings require throwing the following exception [2022-03-03 19:45:19,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2022-03-03 19:45:19,366 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Ended with exit code 0 [2022-03-03 19:45:19,550 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,SelfDestructingSolverStorable124 [2022-03-03 19:45:19,551 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:139) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:934) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:773) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:345) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:305) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:582) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:273) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:145) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:304) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:156) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) ... 46 more [2022-03-03 19:45:19,555 INFO L158 Benchmark]: Toolchain (without parser) took 630077.90ms. Allocated memory was 174.1MB in the beginning and 1.0GB in the end (delta: 857.7MB). Free memory was 132.5MB in the beginning and 403.6MB in the end (delta: -271.1MB). Peak memory consumption was 587.1MB. Max. memory is 8.0GB. [2022-03-03 19:45:19,555 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.10ms. Allocated memory is still 174.1MB. Free memory is still 133.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-03 19:45:19,555 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.56ms. Allocated memory is still 174.1MB. Free memory was 132.4MB in the beginning and 130.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-03 19:45:19,555 INFO L158 Benchmark]: Boogie Preprocessor took 11.84ms. Allocated memory is still 174.1MB. Free memory was 130.9MB in the beginning and 129.9MB in the end (delta: 985.4kB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-03 19:45:19,555 INFO L158 Benchmark]: RCFGBuilder took 181.68ms. Allocated memory is still 174.1MB. Free memory was 129.9MB in the beginning and 120.7MB in the end (delta: 9.2MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-03-03 19:45:19,555 INFO L158 Benchmark]: TraceAbstraction took 629861.67ms. Allocated memory was 174.1MB in the beginning and 1.0GB in the end (delta: 857.7MB). Free memory was 120.2MB in the beginning and 403.6MB in the end (delta: -283.3MB). Peak memory consumption was 574.5MB. Max. memory is 8.0GB. [2022-03-03 19:45:19,555 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.10ms. Allocated memory is still 174.1MB. Free memory is still 133.5MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 18.56ms. Allocated memory is still 174.1MB. Free memory was 132.4MB in the beginning and 130.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 11.84ms. Allocated memory is still 174.1MB. Free memory was 130.9MB in the beginning and 129.9MB in the end (delta: 985.4kB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 181.68ms. Allocated memory is still 174.1MB. Free memory was 129.9MB in the beginning and 120.7MB in the end (delta: 9.2MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 629861.67ms. Allocated memory was 174.1MB in the beginning and 1.0GB in the end (delta: 857.7MB). Free memory was 120.2MB in the beginning and 403.6MB in the end (delta: -283.3MB). Peak memory consumption was 574.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...