/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-MCRwithDepranks-BasicCegarLoop.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/send-receive-alt.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-44898dd [2022-02-10 03:27:43,428 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-10 03:27:43,429 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-10 03:27:43,477 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-10 03:27:43,523 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-MCRwithDepranks-BasicCegarLoop.epf [2022-02-10 03:27:43,552 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-10 03:27:43,553 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-10 03:27:43,553 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-10 03:27:43,553 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-10 03:27:43,554 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-10 03:27:43,554 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-10 03:27:43,554 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-10 03:27:43,554 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-10 03:27:43,554 INFO L138 SettingsManager]: * Use SBE=true [2022-02-10 03:27:43,554 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-10 03:27:43,555 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-10 03:27:43,555 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-10 03:27:43,555 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-10 03:27:43,555 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-10 03:27:43,555 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-10 03:27:43,556 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-10 03:27:43,556 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-10 03:27:43,556 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-10 03:27:43,556 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-10 03:27:43,556 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-10 03:27:43,556 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-10 03:27:43,556 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-10 03:27:43,556 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-10 03:27:43,556 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-10 03:27:43,557 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-10 03:27:43,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 03:27:43,557 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-10 03:27:43,557 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-10 03:27:43,557 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-10 03:27:43,557 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-10 03:27:43,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-10 03:27:43,558 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-10 03:27:43,558 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-10 03:27:43,558 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITH_DEPRANKS [2022-02-10 03:27:43,558 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-10 03:27:43,751 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-10 03:27:43,767 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-10 03:27:43,769 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-10 03:27:43,769 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-02-10 03:27:43,773 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-02-10 03:27:43,774 INFO L432 ainManager$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 [2022-02-10 03:27:43,774 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/send-receive-alt.wvr.bpl' [2022-02-10 03:27:43,793 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-10 03:27:43,794 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-10 03:27:43,795 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-10 03:27:43,796 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-10 03:27:43,796 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-10 03:27:43,816 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 10.02 03:27:43" (1/1) ... [2022-02-10 03:27:43,825 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 10.02 03:27:43" (1/1) ... [2022-02-10 03:27:43,830 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-02-10 03:27:43,831 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-10 03:27:43,833 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-10 03:27:43,833 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-10 03:27:43,833 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-10 03:27:43,838 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 10.02 03:27:43" (1/1) ... [2022-02-10 03:27:43,839 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 10.02 03:27:43" (1/1) ... [2022-02-10 03:27:43,840 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 10.02 03:27:43" (1/1) ... [2022-02-10 03:27:43,840 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 10.02 03:27:43" (1/1) ... [2022-02-10 03:27:43,842 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 10.02 03:27:43" (1/1) ... [2022-02-10 03:27:43,844 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 10.02 03:27:43" (1/1) ... [2022-02-10 03:27:43,846 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 10.02 03:27:43" (1/1) ... [2022-02-10 03:27:43,846 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-10 03:27:43,847 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-10 03:27:43,848 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-10 03:27:43,848 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-10 03:27:43,848 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "send-receive-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 03:27:43" (1/1) ... [2022-02-10 03:27:43,853 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 03:27:43,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:27:43,883 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-10 03:27:43,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-10 03:27:43,910 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-02-10 03:27:43,910 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-02-10 03:27:43,910 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-02-10 03:27:43,910 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-02-10 03:27:43,910 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-02-10 03:27:43,911 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-02-10 03:27:43,911 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-02-10 03:27:43,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-10 03:27:43,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-10 03:27:43,911 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-10 03:27:43,946 INFO L234 CfgBuilder]: Building ICFG [2022-02-10 03:27:43,947 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-10 03:27:44,007 INFO L275 CfgBuilder]: Performing block encoding [2022-02-10 03:27:44,018 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-10 03:27:44,018 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-02-10 03:27:44,019 WARN L329 CfgBuilder]: Unexpected successor node of atomic block begin: thread1EXIT is neither atomic block end nor error location. [2022-02-10 03:27:44,020 INFO L202 PluginConnector]: Adding new model send-receive-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 03:27:44 BoogieIcfgContainer [2022-02-10 03:27:44,020 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-10 03:27:44,021 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-10 03:27:44,022 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-10 03:27:44,033 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-10 03:27:44,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "send-receive-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 03:27:43" (1/2) ... [2022-02-10 03:27:44,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@217757bc and model type send-receive-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 03:27:44, skipping insertion in model container [2022-02-10 03:27:44,034 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 10.02 03:27:44" (2/2) ... [2022-02-10 03:27:44,035 INFO L111 eAbstractionObserver]: Analyzing ICFG send-receive-alt.wvr.bpl [2022-02-10 03:27:44,039 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-10 03:27:44,039 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-10 03:27:44,039 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-10 03:27:44,039 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-10 03:27:44,068 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-02-10 03:27:44,096 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-10 03:27:44,102 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-10 03:27:44,103 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-02-10 03:27:44,109 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 25 places, 21 transitions, 58 flow [2022-02-10 03:27:44,120 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) [2022-02-10 03:27:44,311 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 3468 transitions and produced 1736 states. [2022-02-10 03:27:44,328 INFO L276 IsEmpty]: Start isEmpty. Operand has 1736 states, 1158 states have (on average 1.7763385146804835) internal successors, (2057), 1735 states have internal predecessors, (2057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:27:44,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-02-10 03:27:44,335 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:27:44,336 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:27:44,336 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:27:44,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:27:44,340 INFO L85 PathProgramCache]: Analyzing trace with hash -612514274, now seen corresponding path program 1 times [2022-02-10 03:27:44,347 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:27:44,347 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328802301] [2022-02-10 03:27:44,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:27:44,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:27:44,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:27:44,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:27:44,523 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:27:44,523 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328802301] [2022-02-10 03:27:44,524 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328802301] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:27:44,524 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:27:44,524 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-10 03:27:44,525 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040933652] [2022-02-10 03:27:44,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:27:44,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-10 03:27:44,528 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:27:44,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-10 03:27:44,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-10 03:27:44,562 INFO L87 Difference]: Start difference. First operand has 1736 states, 1158 states have (on average 1.7763385146804835) internal successors, (2057), 1735 states have internal predecessors, (2057), 0 states have call successors, (0), 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) [2022-02-10 03:27:44,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:27:44,635 INFO L93 Difference]: Finished difference Result 1712 states and 2033 transitions. [2022-02-10 03:27:44,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-10 03:27:44,638 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 [2022-02-10 03:27:44,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:27:44,674 INFO L225 Difference]: With dead ends: 1712 [2022-02-10 03:27:44,675 INFO L226 Difference]: Without dead ends: 1141 [2022-02-10 03:27:44,676 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 [2022-02-10 03:27:44,679 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 5 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 03:27:44,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 17 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 03:27:44,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1141 states. [2022-02-10 03:27:44,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1141 to 21. [2022-02-10 03:27:44,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.55) internal successors, (31), 20 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) [2022-02-10 03:27:44,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 31 transitions. [2022-02-10 03:27:44,731 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 31 transitions. Word has length 11 [2022-02-10 03:27:44,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:27:44,731 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 31 transitions. [2022-02-10 03:27:44,732 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) [2022-02-10 03:27:44,732 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 31 transitions. [2022-02-10 03:27:44,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-02-10 03:27:44,732 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:27:44,732 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:27:44,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-10 03:27:44,733 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:27:44,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:27:44,733 INFO L85 PathProgramCache]: Analyzing trace with hash -987070873, now seen corresponding path program 1 times [2022-02-10 03:27:44,733 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:27:44,734 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131336929] [2022-02-10 03:27:44,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:27:44,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:27:44,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:27:44,770 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:27:44,770 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:27:44,770 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131336929] [2022-02-10 03:27:44,771 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131336929] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:27:44,771 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:27:44,771 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-10 03:27:44,772 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809923898] [2022-02-10 03:27:44,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:27:44,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-10 03:27:44,773 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:27:44,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-10 03:27:44,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-10 03:27:44,773 INFO L87 Difference]: Start difference. First operand 21 states and 31 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) [2022-02-10 03:27:44,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:27:44,785 INFO L93 Difference]: Finished difference Result 22 states and 28 transitions. [2022-02-10 03:27:44,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-10 03:27:44,786 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 [2022-02-10 03:27:44,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:27:44,786 INFO L225 Difference]: With dead ends: 22 [2022-02-10 03:27:44,786 INFO L226 Difference]: Without dead ends: 22 [2022-02-10 03:27:44,786 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 [2022-02-10 03:27:44,790 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 2 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 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 [2022-02-10 03:27:44,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 17 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 03:27:44,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-02-10 03:27:44,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19. [2022-02-10 03:27:44,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:27:44,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2022-02-10 03:27:44,793 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 12 [2022-02-10 03:27:44,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:27:44,793 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2022-02-10 03:27:44,793 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) [2022-02-10 03:27:44,793 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2022-02-10 03:27:44,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-10 03:27:44,793 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:27:44,794 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:27:44,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-10 03:27:44,794 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:27:44,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:27:44,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1304321976, now seen corresponding path program 1 times [2022-02-10 03:27:44,794 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:27:44,795 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639397250] [2022-02-10 03:27:44,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:27:44,795 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:27:44,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:27:44,890 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:27:44,891 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:27:44,891 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639397250] [2022-02-10 03:27:44,891 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639397250] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:27:44,891 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453307539] [2022-02-10 03:27:44,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:27:44,891 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:27:44,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:27:44,895 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:27:44,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-10 03:27:44,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:27:44,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 03:27:44,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:27:45,058 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 12 [2022-02-10 03:27:45,110 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:27:45,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:27:45,189 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:27:45,189 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 24 [2022-02-10 03:27:45,253 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:27:45,254 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453307539] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:27:45,254 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:27:45,254 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2022-02-10 03:27:45,254 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100002552] [2022-02-10 03:27:45,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:27:45,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-10 03:27:45,255 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:27:45,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-10 03:27:45,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-02-10 03:27:45,255 INFO L87 Difference]: Start difference. First operand 19 states and 24 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) [2022-02-10 03:27:45,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:27:45,295 INFO L93 Difference]: Finished difference Result 42 states and 57 transitions. [2022-02-10 03:27:45,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-10 03:27:45,296 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 [2022-02-10 03:27:45,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:27:45,296 INFO L225 Difference]: With dead ends: 42 [2022-02-10 03:27:45,296 INFO L226 Difference]: Without dead ends: 35 [2022-02-10 03:27:45,296 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 [2022-02-10 03:27:45,297 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 33 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 03:27:45,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 61 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 03:27:45,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-02-10 03:27:45,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 24. [2022-02-10 03:27:45,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:27:45,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 32 transitions. [2022-02-10 03:27:45,305 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 32 transitions. Word has length 15 [2022-02-10 03:27:45,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:27:45,306 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 32 transitions. [2022-02-10 03:27:45,306 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) [2022-02-10 03:27:45,306 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 32 transitions. [2022-02-10 03:27:45,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-10 03:27:45,307 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:27:45,307 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:27:45,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-02-10 03:27:45,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:27:45,524 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:27:45,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:27:45,525 INFO L85 PathProgramCache]: Analyzing trace with hash -699645992, now seen corresponding path program 1 times [2022-02-10 03:27:45,525 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:27:45,525 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955731462] [2022-02-10 03:27:45,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:27:45,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:27:45,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:27:45,537 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:27:45,538 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:27:45,538 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955731462] [2022-02-10 03:27:45,538 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955731462] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:27:45,538 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:27:45,538 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-10 03:27:45,538 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752505102] [2022-02-10 03:27:45,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:27:45,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-10 03:27:45,541 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:27:45,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-10 03:27:45,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-10 03:27:45,542 INFO L87 Difference]: Start difference. First operand 24 states and 32 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) [2022-02-10 03:27:45,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:27:45,574 INFO L93 Difference]: Finished difference Result 28 states and 39 transitions. [2022-02-10 03:27:45,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-10 03:27:45,574 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 [2022-02-10 03:27:45,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:27:45,575 INFO L225 Difference]: With dead ends: 28 [2022-02-10 03:27:45,575 INFO L226 Difference]: Without dead ends: 28 [2022-02-10 03:27:45,575 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 [2022-02-10 03:27:45,576 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 4 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 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 [2022-02-10 03:27:45,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 14 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 03:27:45,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-02-10 03:27:45,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2022-02-10 03:27:45,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 23 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) [2022-02-10 03:27:45,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2022-02-10 03:27:45,578 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 15 [2022-02-10 03:27:45,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:27:45,578 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2022-02-10 03:27:45,578 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) [2022-02-10 03:27:45,578 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2022-02-10 03:27:45,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-02-10 03:27:45,579 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:27:45,579 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:27:45,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-10 03:27:45,579 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:27:45,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:27:45,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1738430269, now seen corresponding path program 2 times [2022-02-10 03:27:45,580 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:27:45,580 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178789824] [2022-02-10 03:27:45,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:27:45,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:27:45,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:27:45,612 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:27:45,612 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:27:45,613 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178789824] [2022-02-10 03:27:45,613 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178789824] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:27:45,613 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:27:45,613 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-10 03:27:45,613 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899472919] [2022-02-10 03:27:45,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:27:45,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 03:27:45,613 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:27:45,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 03:27:45,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-02-10 03:27:45,614 INFO L87 Difference]: Start difference. First operand 24 states and 31 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) [2022-02-10 03:27:45,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:27:45,628 INFO L93 Difference]: Finished difference Result 56 states and 71 transitions. [2022-02-10 03:27:45,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-10 03:27:45,629 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 [2022-02-10 03:27:45,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:27:45,629 INFO L225 Difference]: With dead ends: 56 [2022-02-10 03:27:45,629 INFO L226 Difference]: Without dead ends: 56 [2022-02-10 03:27:45,629 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 [2022-02-10 03:27:45,630 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 29 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 03:27:45,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 29 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 03:27:45,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-02-10 03:27:45,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 32. [2022-02-10 03:27:45,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.3870967741935485) internal successors, (43), 31 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:27:45,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 43 transitions. [2022-02-10 03:27:45,632 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 43 transitions. Word has length 16 [2022-02-10 03:27:45,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:27:45,633 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 43 transitions. [2022-02-10 03:27:45,633 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) [2022-02-10 03:27:45,633 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 43 transitions. [2022-02-10 03:27:45,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-02-10 03:27:45,633 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:27:45,633 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:27:45,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-10 03:27:45,634 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:27:45,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:27:45,634 INFO L85 PathProgramCache]: Analyzing trace with hash 2026072000, now seen corresponding path program 3 times [2022-02-10 03:27:45,634 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:27:45,634 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152790220] [2022-02-10 03:27:45,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:27:45,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:27:45,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:27:45,651 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:27:45,651 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:27:45,651 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152790220] [2022-02-10 03:27:45,652 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152790220] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:27:45,652 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857931822] [2022-02-10 03:27:45,652 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:27:45,652 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:27:45,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:27:45,653 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:27:45,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-10 03:27:45,676 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 03:27:45,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:27:45,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2022-02-10 03:27:45,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:27:45,707 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:27:45,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:27:45,750 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:27:45,750 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857931822] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:27:45,750 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:27:45,751 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2022-02-10 03:27:45,751 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575639291] [2022-02-10 03:27:45,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:27:45,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-10 03:27:45,751 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:27:45,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-10 03:27:45,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-10 03:27:45,752 INFO L87 Difference]: Start difference. First operand 32 states and 43 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) [2022-02-10 03:27:45,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:27:45,770 INFO L93 Difference]: Finished difference Result 47 states and 60 transitions. [2022-02-10 03:27:45,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-10 03:27:45,770 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 [2022-02-10 03:27:45,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:27:45,771 INFO L225 Difference]: With dead ends: 47 [2022-02-10 03:27:45,771 INFO L226 Difference]: Without dead ends: 47 [2022-02-10 03:27:45,771 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 [2022-02-10 03:27:45,772 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 [2022-02-10 03:27:45,772 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] [2022-02-10 03:27:45,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-02-10 03:27:45,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 42. [2022-02-10 03:27:45,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.3658536585365855) internal successors, (56), 41 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:27:45,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 56 transitions. [2022-02-10 03:27:45,774 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 56 transitions. Word has length 19 [2022-02-10 03:27:45,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:27:45,774 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 56 transitions. [2022-02-10 03:27:45,775 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) [2022-02-10 03:27:45,775 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 56 transitions. [2022-02-10 03:27:45,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-02-10 03:27:45,775 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:27:45,775 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:27:45,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-10 03:27:45,990 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 [2022-02-10 03:27:45,991 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:27:45,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:27:45,991 INFO L85 PathProgramCache]: Analyzing trace with hash 22104032, now seen corresponding path program 1 times [2022-02-10 03:27:45,992 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:27:45,992 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388696001] [2022-02-10 03:27:45,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:27:45,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:27:46,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:27:46,131 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:27:46,131 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:27:46,131 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388696001] [2022-02-10 03:27:46,131 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388696001] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:27:46,131 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015345193] [2022-02-10 03:27:46,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:27:46,132 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:27:46,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:27:46,133 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:27:46,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-10 03:27:46,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:27:46,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-10 03:27:46,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:27:46,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:27:46,302 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:27:46,303 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 [2022-02-10 03:27:46,325 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:27:46,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:27:46,447 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-02-10 03:27:46,448 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 [2022-02-10 03:27:46,549 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:27:46,550 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015345193] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:27:46,550 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:27:46,550 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-02-10 03:27:46,550 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610975505] [2022-02-10 03:27:46,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:27:46,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-10 03:27:46,551 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:27:46,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-10 03:27:46,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2022-02-10 03:27:46,551 INFO L87 Difference]: Start difference. First operand 42 states and 56 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) [2022-02-10 03:27:46,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:27:46,642 INFO L93 Difference]: Finished difference Result 80 states and 104 transitions. [2022-02-10 03:27:46,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-10 03:27:46,642 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 [2022-02-10 03:27:46,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:27:46,643 INFO L225 Difference]: With dead ends: 80 [2022-02-10 03:27:46,643 INFO L226 Difference]: Without dead ends: 71 [2022-02-10 03:27:46,643 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 [2022-02-10 03:27:46,644 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 54 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 03:27:46,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 87 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 86 Invalid, 0 Unknown, 2 Unchecked, 0.0s Time] [2022-02-10 03:27:46,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-02-10 03:27:46,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 46. [2022-02-10 03:27:46,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 45 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:27:46,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 61 transitions. [2022-02-10 03:27:46,646 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 61 transitions. Word has length 19 [2022-02-10 03:27:46,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:27:46,646 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 61 transitions. [2022-02-10 03:27:46,646 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) [2022-02-10 03:27:46,647 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 61 transitions. [2022-02-10 03:27:46,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-02-10 03:27:46,647 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:27:46,647 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:27:46,664 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-02-10 03:27:46,851 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 [2022-02-10 03:27:46,852 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:27:46,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:27:46,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1946797840, now seen corresponding path program 2 times [2022-02-10 03:27:46,853 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:27:46,853 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570949941] [2022-02-10 03:27:46,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:27:46,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:27:46,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:27:46,942 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:27:46,943 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:27:46,943 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570949941] [2022-02-10 03:27:46,943 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570949941] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:27:46,943 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18677944] [2022-02-10 03:27:46,943 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:27:46,943 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:27:46,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:27:46,944 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:27:46,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-10 03:27:46,965 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:27:46,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:27:46,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-10 03:27:46,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:27:47,081 INFO L353 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-02-10 03:27:47,081 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2022-02-10 03:27:47,099 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:27:47,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:27:47,201 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-02-10 03:27:47,202 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 [2022-02-10 03:27:47,330 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:27:47,331 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18677944] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:27:47,331 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:27:47,331 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-02-10 03:27:47,332 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133041065] [2022-02-10 03:27:47,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:27:47,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-10 03:27:47,332 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:27:47,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-10 03:27:47,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-02-10 03:27:47,332 INFO L87 Difference]: Start difference. First operand 46 states and 61 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) [2022-02-10 03:27:47,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:27:47,384 INFO L93 Difference]: Finished difference Result 77 states and 103 transitions. [2022-02-10 03:27:47,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-10 03:27:47,384 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 [2022-02-10 03:27:47,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:27:47,385 INFO L225 Difference]: With dead ends: 77 [2022-02-10 03:27:47,385 INFO L226 Difference]: Without dead ends: 68 [2022-02-10 03:27:47,385 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 [2022-02-10 03:27:47,385 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 52 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 03:27:47,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 87 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 03:27:47,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-02-10 03:27:47,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 52. [2022-02-10 03:27:47,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.3529411764705883) internal successors, (69), 51 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:27:47,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 69 transitions. [2022-02-10 03:27:47,388 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 69 transitions. Word has length 19 [2022-02-10 03:27:47,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:27:47,388 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 69 transitions. [2022-02-10 03:27:47,388 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) [2022-02-10 03:27:47,388 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 69 transitions. [2022-02-10 03:27:47,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:27:47,389 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:27:47,389 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:27:47,411 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-02-10 03:27:47,603 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 [2022-02-10 03:27:47,603 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:27:47,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:27:47,604 INFO L85 PathProgramCache]: Analyzing trace with hash 180345573, now seen corresponding path program 3 times [2022-02-10 03:27:47,604 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:27:47,604 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491048584] [2022-02-10 03:27:47,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:27:47,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:27:47,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:27:47,643 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:27:47,643 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:27:47,644 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491048584] [2022-02-10 03:27:47,644 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491048584] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:27:47,644 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763140301] [2022-02-10 03:27:47,644 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:27:47,644 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:27:47,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:27:47,645 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:27:47,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-10 03:27:47,667 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-10 03:27:47,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:27:47,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-10 03:27:47,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:27:47,704 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:27:47,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:27:47,755 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:27:47,755 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763140301] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:27:47,755 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:27:47,755 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 5 [2022-02-10 03:27:47,756 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807288169] [2022-02-10 03:27:47,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:27:47,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-10 03:27:47,756 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:27:47,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-10 03:27:47,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-02-10 03:27:47,756 INFO L87 Difference]: Start difference. First operand 52 states and 69 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) [2022-02-10 03:27:47,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:27:47,782 INFO L93 Difference]: Finished difference Result 117 states and 150 transitions. [2022-02-10 03:27:47,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 03:27:47,783 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 [2022-02-10 03:27:47,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:27:47,783 INFO L225 Difference]: With dead ends: 117 [2022-02-10 03:27:47,783 INFO L226 Difference]: Without dead ends: 117 [2022-02-10 03:27:47,784 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 [2022-02-10 03:27:47,784 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 30 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 03:27:47,785 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 49 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 03:27:47,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-02-10 03:27:47,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 67. [2022-02-10 03:27:47,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.4090909090909092) internal successors, (93), 66 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:27:47,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 93 transitions. [2022-02-10 03:27:47,790 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 93 transitions. Word has length 20 [2022-02-10 03:27:47,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:27:47,790 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 93 transitions. [2022-02-10 03:27:47,791 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) [2022-02-10 03:27:47,791 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 93 transitions. [2022-02-10 03:27:47,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-10 03:27:47,793 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:27:47,793 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:27:47,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-02-10 03:27:47,995 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 [2022-02-10 03:27:47,996 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:27:47,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:27:47,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1758162883, now seen corresponding path program 4 times [2022-02-10 03:27:47,996 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:27:47,996 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651252788] [2022-02-10 03:27:47,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:27:47,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:27:48,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:27:48,080 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:27:48,080 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:27:48,080 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651252788] [2022-02-10 03:27:48,080 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651252788] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:27:48,080 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645933054] [2022-02-10 03:27:48,080 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:27:48,081 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:27:48,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:27:48,082 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:27:48,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-02-10 03:27:48,111 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:27:48,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:27:48,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-10 03:27:48,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:27:48,257 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:27:48,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:27:48,258 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 [2022-02-10 03:27:48,277 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:27:48,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:27:48,408 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-02-10 03:27:48,408 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 [2022-02-10 03:27:48,508 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:27:48,508 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645933054] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:27:48,508 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:27:48,508 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-02-10 03:27:48,508 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209203221] [2022-02-10 03:27:48,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:27:48,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-10 03:27:48,509 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:27:48,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-10 03:27:48,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2022-02-10 03:27:48,509 INFO L87 Difference]: Start difference. First operand 67 states and 93 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) [2022-02-10 03:27:48,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:27:48,598 INFO L93 Difference]: Finished difference Result 105 states and 145 transitions. [2022-02-10 03:27:48,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-10 03:27:48,598 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 [2022-02-10 03:27:48,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:27:48,599 INFO L225 Difference]: With dead ends: 105 [2022-02-10 03:27:48,599 INFO L226 Difference]: Without dead ends: 96 [2022-02-10 03:27:48,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2022-02-10 03:27:48,599 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 49 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:27:48,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 89 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 84 Invalid, 0 Unknown, 5 Unchecked, 0.1s Time] [2022-02-10 03:27:48,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-02-10 03:27:48,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 66. [2022-02-10 03:27:48,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.4) internal successors, (91), 65 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:27:48,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 91 transitions. [2022-02-10 03:27:48,602 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 91 transitions. Word has length 22 [2022-02-10 03:27:48,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:27:48,602 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 91 transitions. [2022-02-10 03:27:48,602 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) [2022-02-10 03:27:48,602 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 91 transitions. [2022-02-10 03:27:48,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-10 03:27:48,603 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:27:48,603 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:27:48,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-02-10 03:27:48,819 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 [2022-02-10 03:27:48,820 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:27:48,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:27:48,820 INFO L85 PathProgramCache]: Analyzing trace with hash -623510552, now seen corresponding path program 5 times [2022-02-10 03:27:48,820 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:27:48,820 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158391614] [2022-02-10 03:27:48,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:27:48,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:27:48,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:27:48,972 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:27:48,973 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:27:48,973 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158391614] [2022-02-10 03:27:48,973 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158391614] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:27:48,973 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155068722] [2022-02-10 03:27:48,973 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 03:27:48,973 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:27:48,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:27:48,974 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:27:48,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-02-10 03:27:48,998 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-10 03:27:48,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:27:49,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 27 conjunts are in the unsatisfiable core [2022-02-10 03:27:49,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:27:49,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:27:49,202 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:27:49,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:27:49,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:27:49,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:27:49,204 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:27:49,205 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 [2022-02-10 03:27:49,225 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:27:49,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:27:49,445 INFO L353 Elim1Store]: treesize reduction 76, result has 52.8 percent of original size [2022-02-10 03:27:49,445 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 [2022-02-10 03:27:49,608 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:27:49,609 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155068722] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:27:49,609 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:27:49,609 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-02-10 03:27:49,609 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4882632] [2022-02-10 03:27:49,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:27:49,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 03:27:49,609 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:27:49,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 03:27:49,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2022-02-10 03:27:49,610 INFO L87 Difference]: Start difference. First operand 66 states and 91 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) [2022-02-10 03:27:50,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:27:50,036 INFO L93 Difference]: Finished difference Result 350 states and 446 transitions. [2022-02-10 03:27:50,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-10 03:27:50,037 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 [2022-02-10 03:27:50,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:27:50,038 INFO L225 Difference]: With dead ends: 350 [2022-02-10 03:27:50,038 INFO L226 Difference]: Without dead ends: 221 [2022-02-10 03:27:50,038 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 [2022-02-10 03:27:50,039 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 177 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:27:50,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 367 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 355 Invalid, 0 Unknown, 47 Unchecked, 0.2s Time] [2022-02-10 03:27:50,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-02-10 03:27:50,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 97. [2022-02-10 03:27:50,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.4375) internal successors, (138), 96 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:27:50,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 138 transitions. [2022-02-10 03:27:50,042 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 138 transitions. Word has length 23 [2022-02-10 03:27:50,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:27:50,043 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 138 transitions. [2022-02-10 03:27:50,043 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) [2022-02-10 03:27:50,043 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 138 transitions. [2022-02-10 03:27:50,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-10 03:27:50,043 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:27:50,043 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:27:50,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-02-10 03:27:50,251 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 [2022-02-10 03:27:50,252 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:27:50,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:27:50,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1290680152, now seen corresponding path program 6 times [2022-02-10 03:27:50,252 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:27:50,252 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447505813] [2022-02-10 03:27:50,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:27:50,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:27:50,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:27:50,376 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:27:50,376 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:27:50,376 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447505813] [2022-02-10 03:27:50,376 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447505813] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:27:50,377 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189181230] [2022-02-10 03:27:50,377 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 03:27:50,377 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:27:50,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:27:50,378 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:27:50,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-02-10 03:27:50,409 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-10 03:27:50,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:27:50,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-10 03:27:50,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:27:50,609 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:27:50,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:27:50,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:27:50,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:27:50,611 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:27:50,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:27:50,614 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 [2022-02-10 03:27:50,633 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:27:50,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:27:50,846 INFO L353 Elim1Store]: treesize reduction 76, result has 52.8 percent of original size [2022-02-10 03:27:50,847 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 [2022-02-10 03:27:51,070 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:27:51,070 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189181230] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:27:51,070 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:27:51,070 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-02-10 03:27:51,070 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185921557] [2022-02-10 03:27:51,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:27:51,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 03:27:51,071 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:27:51,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 03:27:51,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2022-02-10 03:27:51,071 INFO L87 Difference]: Start difference. First operand 97 states and 138 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) [2022-02-10 03:27:51,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:27:51,229 INFO L93 Difference]: Finished difference Result 185 states and 255 transitions. [2022-02-10 03:27:51,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-10 03:27:51,229 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 [2022-02-10 03:27:51,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:27:51,230 INFO L225 Difference]: With dead ends: 185 [2022-02-10 03:27:51,230 INFO L226 Difference]: Without dead ends: 170 [2022-02-10 03:27:51,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2022-02-10 03:27:51,231 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 83 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:27:51,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 231 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 182 Invalid, 0 Unknown, 26 Unchecked, 0.1s Time] [2022-02-10 03:27:51,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-02-10 03:27:51,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 102. [2022-02-10 03:27:51,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.4455445544554455) internal successors, (146), 101 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:27:51,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 146 transitions. [2022-02-10 03:27:51,234 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 146 transitions. Word has length 23 [2022-02-10 03:27:51,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:27:51,234 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 146 transitions. [2022-02-10 03:27:51,234 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) [2022-02-10 03:27:51,234 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 146 transitions. [2022-02-10 03:27:51,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-10 03:27:51,235 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:27:51,235 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:27:51,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-02-10 03:27:51,443 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 [2022-02-10 03:27:51,443 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:27:51,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:27:51,444 INFO L85 PathProgramCache]: Analyzing trace with hash 836461336, now seen corresponding path program 7 times [2022-02-10 03:27:51,444 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:27:51,444 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584665733] [2022-02-10 03:27:51,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:27:51,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:27:51,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:27:51,594 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:27:51,594 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:27:51,594 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584665733] [2022-02-10 03:27:51,594 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584665733] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:27:51,594 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512537741] [2022-02-10 03:27:51,594 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 03:27:51,594 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:27:51,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:27:51,595 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:27:51,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-02-10 03:27:51,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:27:51,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-10 03:27:51,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:27:51,809 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:27:51,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:27:51,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:27:51,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:27:51,837 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 [2022-02-10 03:27:51,853 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:27:51,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:27:52,069 INFO L353 Elim1Store]: treesize reduction 76, result has 52.8 percent of original size [2022-02-10 03:27:52,070 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 [2022-02-10 03:27:52,263 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:27:52,263 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512537741] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:27:52,263 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:27:52,263 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-02-10 03:27:52,263 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975342272] [2022-02-10 03:27:52,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:27:52,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 03:27:52,264 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:27:52,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 03:27:52,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2022-02-10 03:27:52,264 INFO L87 Difference]: Start difference. First operand 102 states and 146 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) [2022-02-10 03:27:52,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:27:52,435 INFO L93 Difference]: Finished difference Result 261 states and 344 transitions. [2022-02-10 03:27:52,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-10 03:27:52,435 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 [2022-02-10 03:27:52,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:27:52,436 INFO L225 Difference]: With dead ends: 261 [2022-02-10 03:27:52,436 INFO L226 Difference]: Without dead ends: 234 [2022-02-10 03:27:52,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=128, Invalid=472, Unknown=0, NotChecked=0, Total=600 [2022-02-10 03:27:52,437 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 102 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 51 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:27:52,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 251 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 151 Invalid, 0 Unknown, 51 Unchecked, 0.1s Time] [2022-02-10 03:27:52,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-02-10 03:27:52,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 147. [2022-02-10 03:27:52,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.4315068493150684) internal successors, (209), 146 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:27:52,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 209 transitions. [2022-02-10 03:27:52,441 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 209 transitions. Word has length 23 [2022-02-10 03:27:52,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:27:52,441 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 209 transitions. [2022-02-10 03:27:52,441 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) [2022-02-10 03:27:52,442 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 209 transitions. [2022-02-10 03:27:52,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-10 03:27:52,442 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:27:52,442 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:27:52,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-02-10 03:27:52,663 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 [2022-02-10 03:27:52,663 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:27:52,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:27:52,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1544315256, now seen corresponding path program 8 times [2022-02-10 03:27:52,664 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:27:52,664 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738825319] [2022-02-10 03:27:52,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:27:52,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:27:52,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:27:52,768 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:27:52,768 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:27:52,768 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738825319] [2022-02-10 03:27:52,768 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738825319] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:27:52,768 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911480567] [2022-02-10 03:27:52,768 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:27:52,768 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:27:52,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:27:52,769 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:27:52,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-02-10 03:27:52,789 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:27:52,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:27:52,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-10 03:27:52,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:27:53,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:27:53,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:27:53,002 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:27:53,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:27:53,003 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 [2022-02-10 03:27:53,025 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:27:53,025 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:27:53,257 INFO L353 Elim1Store]: treesize reduction 76, result has 52.8 percent of original size [2022-02-10 03:27:53,258 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 [2022-02-10 03:27:53,482 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:27:53,482 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911480567] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:27:53,482 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:27:53,483 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-02-10 03:27:53,483 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544471631] [2022-02-10 03:27:53,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:27:53,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 03:27:53,483 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:27:53,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 03:27:53,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2022-02-10 03:27:53,484 INFO L87 Difference]: Start difference. First operand 147 states and 209 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) [2022-02-10 03:27:53,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:27:53,942 INFO L93 Difference]: Finished difference Result 514 states and 678 transitions. [2022-02-10 03:27:53,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-10 03:27:53,942 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 [2022-02-10 03:27:53,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:27:53,944 INFO L225 Difference]: With dead ends: 514 [2022-02-10 03:27:53,944 INFO L226 Difference]: Without dead ends: 326 [2022-02-10 03:27:53,944 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 [2022-02-10 03:27:53,944 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 217 mSDsluCounter, 703 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 137 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:27:53,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [217 Valid, 498 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 436 Invalid, 0 Unknown, 137 Unchecked, 0.2s Time] [2022-02-10 03:27:53,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2022-02-10 03:27:53,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 97. [2022-02-10 03:27:53,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.3958333333333333) internal successors, (134), 96 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:27:53,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 134 transitions. [2022-02-10 03:27:53,947 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 134 transitions. Word has length 23 [2022-02-10 03:27:53,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:27:53,948 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 134 transitions. [2022-02-10 03:27:53,948 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) [2022-02-10 03:27:53,948 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 134 transitions. [2022-02-10 03:27:53,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-10 03:27:53,948 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:27:53,948 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:27:53,966 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-02-10 03:27:54,157 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 [2022-02-10 03:27:54,157 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:27:54,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:27:54,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1961021720, now seen corresponding path program 9 times [2022-02-10 03:27:54,158 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:27:54,158 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542940066] [2022-02-10 03:27:54,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:27:54,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:27:54,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:27:54,281 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:27:54,281 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:27:54,281 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542940066] [2022-02-10 03:27:54,281 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542940066] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:27:54,281 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227295196] [2022-02-10 03:27:54,281 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:27:54,281 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:27:54,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:27:54,284 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:27:54,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-02-10 03:27:54,309 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-10 03:27:54,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:27:54,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-10 03:27:54,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:27:54,482 INFO L353 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-02-10 03:27:54,482 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 [2022-02-10 03:27:54,502 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:27:54,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:27:54,714 INFO L353 Elim1Store]: treesize reduction 76, result has 52.8 percent of original size [2022-02-10 03:27:54,715 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 [2022-02-10 03:27:54,934 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:27:54,935 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227295196] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:27:54,935 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:27:54,935 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-02-10 03:27:54,935 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800009058] [2022-02-10 03:27:54,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:27:54,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 03:27:54,935 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:27:54,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 03:27:54,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2022-02-10 03:27:54,936 INFO L87 Difference]: Start difference. First operand 97 states and 134 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) [2022-02-10 03:27:55,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:27:55,083 INFO L93 Difference]: Finished difference Result 208 states and 285 transitions. [2022-02-10 03:27:55,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-10 03:27:55,084 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 [2022-02-10 03:27:55,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:27:55,084 INFO L225 Difference]: With dead ends: 208 [2022-02-10 03:27:55,084 INFO L226 Difference]: Without dead ends: 199 [2022-02-10 03:27:55,085 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 [2022-02-10 03:27:55,085 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 72 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:27:55,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 219 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:27:55,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-02-10 03:27:55,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 109. [2022-02-10 03:27:55,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.3888888888888888) internal successors, (150), 108 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:27:55,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 150 transitions. [2022-02-10 03:27:55,088 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 150 transitions. Word has length 23 [2022-02-10 03:27:55,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:27:55,088 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 150 transitions. [2022-02-10 03:27:55,088 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) [2022-02-10 03:27:55,088 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 150 transitions. [2022-02-10 03:27:55,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-10 03:27:55,088 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:27:55,088 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:27:55,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-02-10 03:27:55,304 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 [2022-02-10 03:27:55,305 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:27:55,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:27:55,305 INFO L85 PathProgramCache]: Analyzing trace with hash 621285853, now seen corresponding path program 10 times [2022-02-10 03:27:55,305 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:27:55,305 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699873851] [2022-02-10 03:27:55,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:27:55,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:27:55,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:27:55,335 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:27:55,335 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:27:55,335 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699873851] [2022-02-10 03:27:55,335 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699873851] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:27:55,335 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297219340] [2022-02-10 03:27:55,335 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:27:55,336 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:27:55,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:27:55,337 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:27:55,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-02-10 03:27:55,361 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:27:55,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:27:55,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 03:27:55,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:27:55,395 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:27:55,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:27:55,433 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:27:55,433 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297219340] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:27:55,434 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:27:55,434 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 6 [2022-02-10 03:27:55,434 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313581984] [2022-02-10 03:27:55,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:27:55,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-10 03:27:55,434 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:27:55,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-10 03:27:55,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-02-10 03:27:55,434 INFO L87 Difference]: Start difference. First operand 109 states and 150 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) [2022-02-10 03:27:55,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:27:55,466 INFO L93 Difference]: Finished difference Result 224 states and 297 transitions. [2022-02-10 03:27:55,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-10 03:27:55,466 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 [2022-02-10 03:27:55,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:27:55,467 INFO L225 Difference]: With dead ends: 224 [2022-02-10 03:27:55,467 INFO L226 Difference]: Without dead ends: 224 [2022-02-10 03:27:55,467 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 [2022-02-10 03:27:55,468 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 71 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 41 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 [2022-02-10 03:27:55,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 41 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 03:27:55,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2022-02-10 03:27:55,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 140. [2022-02-10 03:27:55,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 1.410071942446043) internal successors, (196), 139 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:27:55,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 196 transitions. [2022-02-10 03:27:55,470 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 196 transitions. Word has length 24 [2022-02-10 03:27:55,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:27:55,470 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 196 transitions. [2022-02-10 03:27:55,471 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) [2022-02-10 03:27:55,471 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 196 transitions. [2022-02-10 03:27:55,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 03:27:55,471 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:27:55,471 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:27:55,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-02-10 03:27:55,687 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 [2022-02-10 03:27:55,687 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:27:55,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:27:55,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1349759104, now seen corresponding path program 11 times [2022-02-10 03:27:55,687 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:27:55,688 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843451917] [2022-02-10 03:27:55,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:27:55,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:27:55,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:27:55,819 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:27:55,819 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:27:55,820 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843451917] [2022-02-10 03:27:55,820 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843451917] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:27:55,820 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044586511] [2022-02-10 03:27:55,820 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 03:27:55,820 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:27:55,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:27:55,821 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:27:55,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-02-10 03:27:55,850 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-10 03:27:55,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:27:55,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 33 conjunts are in the unsatisfiable core [2022-02-10 03:27:55,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:27:56,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:27:56,131 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:27:56,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:27:56,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:27:56,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:27:56,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:27:56,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:27:56,134 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:27:56,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:27:56,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:27:56,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:27:56,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:27:56,136 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:27:56,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:27:56,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:27:56,138 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:27:56,139 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 [2022-02-10 03:27:56,160 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:27:56,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:27:56,480 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:27:56,480 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:27:56,482 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:27:56,483 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:27:56,483 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:27:56,484 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:27:56,484 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:27:56,484 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:27:56,486 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:27:56,486 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:27:56,486 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:27:56,487 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:27:56,487 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:27:56,488 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:27:56,488 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:27:56,489 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:27:56,489 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:27:56,489 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:27:56,527 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:27:56,528 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 [2022-02-10 03:27:56,726 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:27:56,727 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044586511] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:27:56,727 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:27:56,727 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 28 [2022-02-10 03:27:56,727 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817417965] [2022-02-10 03:27:56,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:27:56,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-10 03:27:56,727 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:27:56,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-10 03:27:56,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=642, Unknown=0, NotChecked=0, Total=812 [2022-02-10 03:27:56,728 INFO L87 Difference]: Start difference. First operand 140 states and 196 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) [2022-02-10 03:27:57,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:27:57,447 INFO L93 Difference]: Finished difference Result 501 states and 657 transitions. [2022-02-10 03:27:57,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-10 03:27:57,447 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 [2022-02-10 03:27:57,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:27:57,449 INFO L225 Difference]: With dead ends: 501 [2022-02-10 03:27:57,449 INFO L226 Difference]: Without dead ends: 375 [2022-02-10 03:27:57,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 521 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=363, Invalid=1529, Unknown=0, NotChecked=0, Total=1892 [2022-02-10 03:27:57,449 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 268 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:27:57,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 435 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 432 Invalid, 0 Unknown, 62 Unchecked, 0.2s Time] [2022-02-10 03:27:57,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2022-02-10 03:27:57,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 198. [2022-02-10 03:27:57,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 1.4213197969543148) internal successors, (280), 197 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:27:57,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 280 transitions. [2022-02-10 03:27:57,454 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 280 transitions. Word has length 27 [2022-02-10 03:27:57,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:27:57,454 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 280 transitions. [2022-02-10 03:27:57,454 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) [2022-02-10 03:27:57,454 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 280 transitions. [2022-02-10 03:27:57,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 03:27:57,455 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:27:57,455 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:27:57,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-02-10 03:27:57,655 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 [2022-02-10 03:27:57,655 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:27:57,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:27:57,656 INFO L85 PathProgramCache]: Analyzing trace with hash 574934704, now seen corresponding path program 12 times [2022-02-10 03:27:57,656 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:27:57,656 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973742290] [2022-02-10 03:27:57,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:27:57,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:27:57,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:27:57,794 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:27:57,794 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:27:57,794 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973742290] [2022-02-10 03:27:57,794 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973742290] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:27:57,794 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312492423] [2022-02-10 03:27:57,794 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 03:27:57,794 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:27:57,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:27:57,795 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:27:57,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-02-10 03:27:57,816 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-10 03:27:57,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:27:57,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 33 conjunts are in the unsatisfiable core [2022-02-10 03:27:57,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:27:58,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:27:58,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:27:58,115 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:27:58,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:27:58,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:27:58,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:27:58,117 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:27:58,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:27:58,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:27:58,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:27:58,119 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:27:58,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:27:58,121 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 [2022-02-10 03:27:58,138 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:27:58,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:27:58,488 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-02-10 03:27:58,488 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 [2022-02-10 03:27:58,842 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:27:58,842 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312492423] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:27:58,842 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:27:58,842 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 25 [2022-02-10 03:27:58,842 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717123029] [2022-02-10 03:27:58,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:27:58,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-10 03:27:58,843 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:27:58,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-10 03:27:58,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2022-02-10 03:27:58,843 INFO L87 Difference]: Start difference. First operand 198 states and 280 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) [2022-02-10 03:27:59,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:27:59,286 INFO L93 Difference]: Finished difference Result 495 states and 699 transitions. [2022-02-10 03:27:59,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-10 03:27:59,287 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 [2022-02-10 03:27:59,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:27:59,288 INFO L225 Difference]: With dead ends: 495 [2022-02-10 03:27:59,288 INFO L226 Difference]: Without dead ends: 459 [2022-02-10 03:27:59,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=302, Invalid=1258, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 03:27:59,289 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 122 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:27:59,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 318 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 294 Invalid, 0 Unknown, 41 Unchecked, 0.2s Time] [2022-02-10 03:27:59,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2022-02-10 03:27:59,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 182. [2022-02-10 03:27:59,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 1.3977900552486189) internal successors, (253), 181 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:27:59,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 253 transitions. [2022-02-10 03:27:59,294 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 253 transitions. Word has length 27 [2022-02-10 03:27:59,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:27:59,294 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 253 transitions. [2022-02-10 03:27:59,294 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) [2022-02-10 03:27:59,294 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 253 transitions. [2022-02-10 03:27:59,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 03:27:59,295 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:27:59,295 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:27:59,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-02-10 03:27:59,499 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 [2022-02-10 03:27:59,499 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:27:59,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:27:59,500 INFO L85 PathProgramCache]: Analyzing trace with hash 110900608, now seen corresponding path program 13 times [2022-02-10 03:27:59,500 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:27:59,500 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585951921] [2022-02-10 03:27:59,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:27:59,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:27:59,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:27:59,654 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:27:59,654 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:27:59,655 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585951921] [2022-02-10 03:27:59,655 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585951921] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:27:59,655 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615936213] [2022-02-10 03:27:59,655 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 03:27:59,655 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:27:59,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:27:59,656 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:27:59,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-02-10 03:27:59,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:27:59,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 33 conjunts are in the unsatisfiable core [2022-02-10 03:27:59,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:28:00,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:00,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:00,036 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:00,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:00,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:00,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:00,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:00,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:00,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:00,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:00,040 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:00,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:00,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:00,042 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:00,043 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 [2022-02-10 03:28:00,060 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:00,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:28:00,418 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-02-10 03:28:00,419 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 [2022-02-10 03:28:00,617 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:00,617 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615936213] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:28:00,617 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:28:00,617 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-02-10 03:28:00,617 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800069501] [2022-02-10 03:28:00,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:28:00,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 03:28:00,618 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:28:00,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 03:28:00,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=570, Unknown=0, NotChecked=0, Total=702 [2022-02-10 03:28:00,618 INFO L87 Difference]: Start difference. First operand 182 states and 253 transitions. Second operand has 27 states, 27 states have (on average 2.4074074074074074) internal successors, (65), 26 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:28:00,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:28:00,904 INFO L93 Difference]: Finished difference Result 411 states and 570 transitions. [2022-02-10 03:28:00,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-10 03:28:00,904 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 [2022-02-10 03:28:00,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:28:00,905 INFO L225 Difference]: With dead ends: 411 [2022-02-10 03:28:00,905 INFO L226 Difference]: Without dead ends: 393 [2022-02-10 03:28:00,906 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 [2022-02-10 03:28:00,906 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 118 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 116 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:28:00,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 348 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 242 Invalid, 0 Unknown, 116 Unchecked, 0.1s Time] [2022-02-10 03:28:00,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2022-02-10 03:28:00,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 178. [2022-02-10 03:28:00,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 177 states have (on average 1.4067796610169492) internal successors, (249), 177 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:28:00,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 249 transitions. [2022-02-10 03:28:00,912 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 249 transitions. Word has length 27 [2022-02-10 03:28:00,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:28:00,913 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 249 transitions. [2022-02-10 03:28:00,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.4074074074074074) internal successors, (65), 26 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:28:00,913 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 249 transitions. [2022-02-10 03:28:00,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 03:28:00,913 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:28:00,913 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:28:00,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-02-10 03:28:01,114 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 [2022-02-10 03:28:01,114 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:28:01,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:28:01,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1440047440, now seen corresponding path program 14 times [2022-02-10 03:28:01,114 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:28:01,114 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530177937] [2022-02-10 03:28:01,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:28:01,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:28:01,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:28:01,275 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:01,275 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:28:01,275 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530177937] [2022-02-10 03:28:01,275 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530177937] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:28:01,276 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941217798] [2022-02-10 03:28:01,276 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:28:01,276 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:28:01,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:28:01,277 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:28:01,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-02-10 03:28:01,297 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:28:01,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:28:01,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 33 conjunts are in the unsatisfiable core [2022-02-10 03:28:01,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:28:01,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:01,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:01,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:01,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:01,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:01,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:01,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:01,569 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:01,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:01,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:01,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:01,571 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:01,572 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 [2022-02-10 03:28:01,608 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:01,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:28:01,960 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-02-10 03:28:01,960 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 [2022-02-10 03:28:02,329 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:02,330 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941217798] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:28:02,330 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:28:02,330 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 24 [2022-02-10 03:28:02,330 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505722558] [2022-02-10 03:28:02,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:28:02,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 03:28:02,330 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:28:02,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 03:28:02,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=475, Unknown=0, NotChecked=0, Total=600 [2022-02-10 03:28:02,331 INFO L87 Difference]: Start difference. First operand 178 states and 249 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) [2022-02-10 03:28:03,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:28:03,308 INFO L93 Difference]: Finished difference Result 804 states and 1045 transitions. [2022-02-10 03:28:03,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-10 03:28:03,308 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 [2022-02-10 03:28:03,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:28:03,310 INFO L225 Difference]: With dead ends: 804 [2022-02-10 03:28:03,310 INFO L226 Difference]: Without dead ends: 585 [2022-02-10 03:28:03,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 619 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=425, Invalid=1831, Unknown=0, NotChecked=0, Total=2256 [2022-02-10 03:28:03,311 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 308 mSDsluCounter, 1009 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 68 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 03:28:03,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [308 Valid, 696 Invalid, 879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 722 Invalid, 0 Unknown, 68 Unchecked, 0.4s Time] [2022-02-10 03:28:03,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2022-02-10 03:28:03,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 234. [2022-02-10 03:28:03,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 1.4291845493562232) internal successors, (333), 233 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:28:03,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 333 transitions. [2022-02-10 03:28:03,316 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 333 transitions. Word has length 27 [2022-02-10 03:28:03,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:28:03,316 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 333 transitions. [2022-02-10 03:28:03,316 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) [2022-02-10 03:28:03,316 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 333 transitions. [2022-02-10 03:28:03,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 03:28:03,317 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:28:03,317 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:28:03,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-02-10 03:28:03,532 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 [2022-02-10 03:28:03,532 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:28:03,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:28:03,532 INFO L85 PathProgramCache]: Analyzing trace with hash 20612272, now seen corresponding path program 15 times [2022-02-10 03:28:03,532 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:28:03,532 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753082071] [2022-02-10 03:28:03,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:28:03,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:28:03,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:28:03,688 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:03,688 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:28:03,689 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753082071] [2022-02-10 03:28:03,689 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753082071] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:28:03,689 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849752299] [2022-02-10 03:28:03,689 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:28:03,689 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:28:03,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:28:03,690 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:28:03,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-02-10 03:28:03,727 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-10 03:28:03,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:28:03,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 33 conjunts are in the unsatisfiable core [2022-02-10 03:28:03,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:28:04,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:04,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:04,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:04,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:04,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:04,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:04,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:04,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:04,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:04,047 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:04,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:04,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:04,048 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:04,049 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 [2022-02-10 03:28:04,069 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:04,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:28:04,420 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-02-10 03:28:04,421 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 [2022-02-10 03:28:04,772 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:04,772 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849752299] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:28:04,773 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:28:04,773 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-02-10 03:28:04,773 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966024485] [2022-02-10 03:28:04,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:28:04,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-10 03:28:04,773 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:28:04,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-10 03:28:04,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2022-02-10 03:28:04,774 INFO L87 Difference]: Start difference. First operand 234 states and 333 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) [2022-02-10 03:28:05,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:28:05,167 INFO L93 Difference]: Finished difference Result 652 states and 917 transitions. [2022-02-10 03:28:05,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-10 03:28:05,168 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 [2022-02-10 03:28:05,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:28:05,169 INFO L225 Difference]: With dead ends: 652 [2022-02-10 03:28:05,169 INFO L226 Difference]: Without dead ends: 598 [2022-02-10 03:28:05,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=294, Invalid=1188, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 03:28:05,170 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 133 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 110 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:28:05,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 418 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 317 Invalid, 0 Unknown, 110 Unchecked, 0.1s Time] [2022-02-10 03:28:05,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2022-02-10 03:28:05,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 360. [2022-02-10 03:28:05,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 359 states have (on average 1.434540389972145) internal successors, (515), 359 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:28:05,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 515 transitions. [2022-02-10 03:28:05,178 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 515 transitions. Word has length 27 [2022-02-10 03:28:05,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:28:05,178 INFO L470 AbstractCegarLoop]: Abstraction has 360 states and 515 transitions. [2022-02-10 03:28:05,178 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) [2022-02-10 03:28:05,178 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 515 transitions. [2022-02-10 03:28:05,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 03:28:05,179 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:28:05,179 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:28:05,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-02-10 03:28:05,391 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 [2022-02-10 03:28:05,391 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:28:05,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:28:05,392 INFO L85 PathProgramCache]: Analyzing trace with hash 874383680, now seen corresponding path program 16 times [2022-02-10 03:28:05,392 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:28:05,392 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747719369] [2022-02-10 03:28:05,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:28:05,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:28:05,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:28:05,542 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:05,543 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:28:05,543 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747719369] [2022-02-10 03:28:05,543 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747719369] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:28:05,543 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91304744] [2022-02-10 03:28:05,543 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:28:05,543 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:28:05,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:28:05,544 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:28:05,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-02-10 03:28:05,563 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:28:05,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:28:05,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 33 conjunts are in the unsatisfiable core [2022-02-10 03:28:05,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:28:05,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:05,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:05,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:05,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:05,851 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:05,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:05,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:05,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:05,854 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 [2022-02-10 03:28:05,880 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:05,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:28:06,259 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-02-10 03:28:06,259 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 [2022-02-10 03:28:06,549 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:06,549 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91304744] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:28:06,549 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:28:06,549 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 23 [2022-02-10 03:28:06,549 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745688691] [2022-02-10 03:28:06,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:28:06,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 03:28:06,550 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:28:06,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 03:28:06,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=436, Unknown=0, NotChecked=0, Total=552 [2022-02-10 03:28:06,550 INFO L87 Difference]: Start difference. First operand 360 states and 515 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) [2022-02-10 03:28:07,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:28:07,090 INFO L93 Difference]: Finished difference Result 865 states and 1181 transitions. [2022-02-10 03:28:07,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-10 03:28:07,091 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 [2022-02-10 03:28:07,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:28:07,093 INFO L225 Difference]: With dead ends: 865 [2022-02-10 03:28:07,093 INFO L226 Difference]: Without dead ends: 739 [2022-02-10 03:28:07,093 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 37 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=277, Invalid=1129, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 03:28:07,094 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 230 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 66 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:28:07,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [230 Valid, 528 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 481 Invalid, 0 Unknown, 66 Unchecked, 0.2s Time] [2022-02-10 03:28:07,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2022-02-10 03:28:07,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 392. [2022-02-10 03:28:07,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 1.432225063938619) internal successors, (560), 391 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:28:07,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 560 transitions. [2022-02-10 03:28:07,100 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 560 transitions. Word has length 27 [2022-02-10 03:28:07,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:28:07,100 INFO L470 AbstractCegarLoop]: Abstraction has 392 states and 560 transitions. [2022-02-10 03:28:07,101 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) [2022-02-10 03:28:07,101 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 560 transitions. [2022-02-10 03:28:07,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 03:28:07,101 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:28:07,101 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:28:07,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-02-10 03:28:07,318 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 [2022-02-10 03:28:07,318 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:28:07,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:28:07,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1959923904, now seen corresponding path program 17 times [2022-02-10 03:28:07,319 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:28:07,319 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715498350] [2022-02-10 03:28:07,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:28:07,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:28:07,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:28:07,496 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:07,496 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:28:07,496 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715498350] [2022-02-10 03:28:07,496 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715498350] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:28:07,496 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748422666] [2022-02-10 03:28:07,496 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 03:28:07,496 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:28:07,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:28:07,508 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:28:07,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-02-10 03:28:07,532 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-10 03:28:07,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:28:07,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 33 conjunts are in the unsatisfiable core [2022-02-10 03:28:07,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:28:07,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:07,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:07,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:07,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:07,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:07,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:07,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:07,997 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:07,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:07,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:07,999 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:07,999 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 65 treesize of output 29 [2022-02-10 03:28:08,017 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:08,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:28:08,819 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:08,820 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:08,821 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:08,822 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:08,822 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:08,824 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:08,825 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:08,825 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:08,826 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:08,826 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:08,828 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:08,828 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:08,828 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:08,829 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:08,830 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:08,899 INFO L353 Elim1Store]: treesize reduction 30, result has 76.7 percent of original size [2022-02-10 03:28:08,899 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 8 new quantified variables, introduced 13 case distinctions, treesize of input 70 treesize of output 132 [2022-02-10 03:28:09,369 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:09,369 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748422666] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:28:09,369 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:28:09,370 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-02-10 03:28:09,370 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919465334] [2022-02-10 03:28:09,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:28:09,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 03:28:09,370 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:28:09,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 03:28:09,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=542, Unknown=0, NotChecked=0, Total=702 [2022-02-10 03:28:09,371 INFO L87 Difference]: Start difference. First operand 392 states and 560 transitions. Second operand has 27 states, 27 states have (on average 2.259259259259259) internal successors, (61), 26 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:28:09,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:28:09,820 INFO L93 Difference]: Finished difference Result 549 states and 767 transitions. [2022-02-10 03:28:09,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-10 03:28:09,820 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.259259259259259) internal successors, (61), 26 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 03:28:09,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:28:09,822 INFO L225 Difference]: With dead ends: 549 [2022-02-10 03:28:09,822 INFO L226 Difference]: Without dead ends: 533 [2022-02-10 03:28:09,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 39 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=317, Invalid=1165, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 03:28:09,822 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 132 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 149 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 03:28:09,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 361 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 72 Invalid, 0 Unknown, 149 Unchecked, 0.0s Time] [2022-02-10 03:28:09,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2022-02-10 03:28:09,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 413. [2022-02-10 03:28:09,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 412 states have (on average 1.441747572815534) internal successors, (594), 412 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:28:09,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 594 transitions. [2022-02-10 03:28:09,832 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 594 transitions. Word has length 27 [2022-02-10 03:28:09,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:28:09,832 INFO L470 AbstractCegarLoop]: Abstraction has 413 states and 594 transitions. [2022-02-10 03:28:09,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.259259259259259) internal successors, (61), 26 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:28:09,832 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 594 transitions. [2022-02-10 03:28:09,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 03:28:09,833 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:28:09,833 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:28:09,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-02-10 03:28:10,047 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 [2022-02-10 03:28:10,047 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:28:10,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:28:10,048 INFO L85 PathProgramCache]: Analyzing trace with hash 834888304, now seen corresponding path program 18 times [2022-02-10 03:28:10,048 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:28:10,048 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401863465] [2022-02-10 03:28:10,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:28:10,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:28:10,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:28:10,214 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:10,214 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:28:10,214 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401863465] [2022-02-10 03:28:10,214 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401863465] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:28:10,214 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445469486] [2022-02-10 03:28:10,215 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 03:28:10,215 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:28:10,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:28:10,216 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:28:10,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-02-10 03:28:10,237 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-10 03:28:10,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:28:10,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 33 conjunts are in the unsatisfiable core [2022-02-10 03:28:10,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:28:10,497 INFO L353 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2022-02-10 03:28:10,498 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 71 treesize of output 29 [2022-02-10 03:28:10,523 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:10,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:28:10,870 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-02-10 03:28:10,870 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 [2022-02-10 03:28:11,245 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:11,246 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445469486] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:28:11,246 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:28:11,246 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2022-02-10 03:28:11,246 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251645366] [2022-02-10 03:28:11,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:28:11,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 03:28:11,246 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:28:11,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 03:28:11,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2022-02-10 03:28:11,247 INFO L87 Difference]: Start difference. First operand 413 states and 594 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) [2022-02-10 03:28:11,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:28:11,598 INFO L93 Difference]: Finished difference Result 667 states and 944 transitions. [2022-02-10 03:28:11,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-10 03:28:11,598 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 [2022-02-10 03:28:11,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:28:11,599 INFO L225 Difference]: With dead ends: 667 [2022-02-10 03:28:11,600 INFO L226 Difference]: Without dead ends: 649 [2022-02-10 03:28:11,600 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 [2022-02-10 03:28:11,600 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 120 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:28:11,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 482 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 03:28:11,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2022-02-10 03:28:11,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 426. [2022-02-10 03:28:11,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 425 states have (on average 1.4352941176470588) internal successors, (610), 425 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:28:11,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 610 transitions. [2022-02-10 03:28:11,606 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 610 transitions. Word has length 27 [2022-02-10 03:28:11,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:28:11,607 INFO L470 AbstractCegarLoop]: Abstraction has 426 states and 610 transitions. [2022-02-10 03:28:11,607 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) [2022-02-10 03:28:11,607 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 610 transitions. [2022-02-10 03:28:11,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-10 03:28:11,607 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:28:11,607 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:28:11,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-02-10 03:28:11,822 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 [2022-02-10 03:28:11,823 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:28:11,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:28:11,823 INFO L85 PathProgramCache]: Analyzing trace with hash 70888325, now seen corresponding path program 19 times [2022-02-10 03:28:11,823 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:28:11,823 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382841893] [2022-02-10 03:28:11,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:28:11,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:28:11,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:28:11,858 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:11,858 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:28:11,858 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382841893] [2022-02-10 03:28:11,858 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382841893] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:28:11,858 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597385898] [2022-02-10 03:28:11,858 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 03:28:11,858 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:28:11,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:28:11,859 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:28:11,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-02-10 03:28:11,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:28:11,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 03:28:11,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:28:11,915 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:11,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:28:11,991 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:11,991 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597385898] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:28:11,991 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:28:11,991 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 7 [2022-02-10 03:28:11,991 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622966246] [2022-02-10 03:28:11,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:28:11,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 03:28:11,991 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:28:11,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 03:28:11,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-02-10 03:28:11,992 INFO L87 Difference]: Start difference. First operand 426 states and 610 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) [2022-02-10 03:28:12,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:28:12,019 INFO L93 Difference]: Finished difference Result 720 states and 1002 transitions. [2022-02-10 03:28:12,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-10 03:28:12,019 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 [2022-02-10 03:28:12,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:28:12,021 INFO L225 Difference]: With dead ends: 720 [2022-02-10 03:28:12,021 INFO L226 Difference]: Without dead ends: 720 [2022-02-10 03:28:12,021 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 [2022-02-10 03:28:12,021 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 65 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 03:28:12,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 63 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 03:28:12,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2022-02-10 03:28:12,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 555. [2022-02-10 03:28:12,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 554 states have (on average 1.4530685920577617) internal successors, (805), 554 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:28:12,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 805 transitions. [2022-02-10 03:28:12,034 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 805 transitions. Word has length 28 [2022-02-10 03:28:12,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:28:12,034 INFO L470 AbstractCegarLoop]: Abstraction has 555 states and 805 transitions. [2022-02-10 03:28:12,034 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) [2022-02-10 03:28:12,034 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 805 transitions. [2022-02-10 03:28:12,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-10 03:28:12,035 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:28:12,035 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:28:12,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-02-10 03:28:12,251 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 [2022-02-10 03:28:12,252 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:28:12,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:28:12,252 INFO L85 PathProgramCache]: Analyzing trace with hash -994661219, now seen corresponding path program 20 times [2022-02-10 03:28:12,252 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:28:12,252 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753350548] [2022-02-10 03:28:12,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:28:12,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:28:12,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:28:12,395 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:12,395 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:28:12,395 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753350548] [2022-02-10 03:28:12,395 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753350548] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:28:12,395 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017530045] [2022-02-10 03:28:12,395 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:28:12,395 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:28:12,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:28:12,396 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:28:12,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-02-10 03:28:12,417 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:28:12,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:28:12,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 33 conjunts are in the unsatisfiable core [2022-02-10 03:28:12,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:28:12,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:12,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:12,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:12,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:12,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:12,776 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:12,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:12,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:12,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:12,778 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:12,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:12,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:12,779 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:12,780 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 [2022-02-10 03:28:12,797 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:12,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:28:13,158 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-02-10 03:28:13,158 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 [2022-02-10 03:28:13,456 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 10 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:13,457 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017530045] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:28:13,457 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:28:13,457 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-02-10 03:28:13,457 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244854539] [2022-02-10 03:28:13,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:28:13,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 03:28:13,457 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:28:13,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 03:28:13,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=570, Unknown=0, NotChecked=0, Total=702 [2022-02-10 03:28:13,458 INFO L87 Difference]: Start difference. First operand 555 states and 805 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) [2022-02-10 03:28:13,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:28:13,698 INFO L93 Difference]: Finished difference Result 942 states and 1348 transitions. [2022-02-10 03:28:13,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-10 03:28:13,703 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 [2022-02-10 03:28:13,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:28:13,705 INFO L225 Difference]: With dead ends: 942 [2022-02-10 03:28:13,705 INFO L226 Difference]: Without dead ends: 924 [2022-02-10 03:28:13,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=192, Invalid=864, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 03:28:13,706 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 95 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 133 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:28:13,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 392 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 280 Invalid, 0 Unknown, 133 Unchecked, 0.1s Time] [2022-02-10 03:28:13,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2022-02-10 03:28:13,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 524. [2022-02-10 03:28:13,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 523 states have (on average 1.4550669216061185) internal successors, (761), 523 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:28:13,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 761 transitions. [2022-02-10 03:28:13,714 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 761 transitions. Word has length 30 [2022-02-10 03:28:13,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:28:13,714 INFO L470 AbstractCegarLoop]: Abstraction has 524 states and 761 transitions. [2022-02-10 03:28:13,714 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) [2022-02-10 03:28:13,714 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 761 transitions. [2022-02-10 03:28:13,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-10 03:28:13,715 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:28:13,715 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:28:13,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-02-10 03:28:13,930 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 [2022-02-10 03:28:13,931 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:28:13,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:28:13,931 INFO L85 PathProgramCache]: Analyzing trace with hash -2124951699, now seen corresponding path program 21 times [2022-02-10 03:28:13,931 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:28:13,931 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906823044] [2022-02-10 03:28:13,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:28:13,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:28:13,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:28:14,083 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:14,083 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:28:14,083 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906823044] [2022-02-10 03:28:14,083 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906823044] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:28:14,083 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443286161] [2022-02-10 03:28:14,083 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:28:14,083 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:28:14,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:28:14,085 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:28:14,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-02-10 03:28:14,107 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-02-10 03:28:14,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:28:14,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 35 conjunts are in the unsatisfiable core [2022-02-10 03:28:14,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:28:14,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:14,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:14,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:14,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:14,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:14,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:14,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:14,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:14,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:14,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:14,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:14,447 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:14,448 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:14,448 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 [2022-02-10 03:28:14,467 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:14,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:28:14,829 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-02-10 03:28:14,830 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 [2022-02-10 03:28:15,209 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 5 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:15,209 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443286161] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:28:15,209 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:28:15,209 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-02-10 03:28:15,210 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598177736] [2022-02-10 03:28:15,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:28:15,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-10 03:28:15,210 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:28:15,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-10 03:28:15,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2022-02-10 03:28:15,210 INFO L87 Difference]: Start difference. First operand 524 states and 761 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) [2022-02-10 03:28:15,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:28:15,582 INFO L93 Difference]: Finished difference Result 928 states and 1317 transitions. [2022-02-10 03:28:15,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-10 03:28:15,582 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 [2022-02-10 03:28:15,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:28:15,584 INFO L225 Difference]: With dead ends: 928 [2022-02-10 03:28:15,585 INFO L226 Difference]: Without dead ends: 892 [2022-02-10 03:28:15,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 45 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=278, Invalid=1128, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 03:28:15,585 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 150 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 154 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:28:15,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 406 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 281 Invalid, 0 Unknown, 154 Unchecked, 0.1s Time] [2022-02-10 03:28:15,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2022-02-10 03:28:15,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 553. [2022-02-10 03:28:15,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 552 states have (on average 1.4583333333333333) internal successors, (805), 552 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:28:15,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 805 transitions. [2022-02-10 03:28:15,593 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 805 transitions. Word has length 30 [2022-02-10 03:28:15,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:28:15,593 INFO L470 AbstractCegarLoop]: Abstraction has 553 states and 805 transitions. [2022-02-10 03:28:15,593 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) [2022-02-10 03:28:15,593 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 805 transitions. [2022-02-10 03:28:15,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-10 03:28:15,594 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:28:15,594 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:28:15,622 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-02-10 03:28:15,807 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 [2022-02-10 03:28:15,807 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:28:15,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:28:15,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1142018851, now seen corresponding path program 22 times [2022-02-10 03:28:15,808 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:28:15,808 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585206684] [2022-02-10 03:28:15,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:28:15,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:28:15,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:28:15,975 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:15,976 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:28:15,976 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585206684] [2022-02-10 03:28:15,976 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585206684] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:28:15,976 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171368382] [2022-02-10 03:28:15,976 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:28:15,976 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:28:15,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:28:15,977 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:28:15,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-02-10 03:28:15,998 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:28:15,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:28:15,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 33 conjunts are in the unsatisfiable core [2022-02-10 03:28:15,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:28:16,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:16,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:16,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:16,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:16,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:16,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:16,326 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:16,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:16,327 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 [2022-02-10 03:28:16,344 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:16,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:28:16,695 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-02-10 03:28:16,696 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 [2022-02-10 03:28:17,164 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:17,165 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171368382] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:28:17,165 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:28:17,165 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-02-10 03:28:17,165 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444617442] [2022-02-10 03:28:17,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:28:17,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 03:28:17,165 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:28:17,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 03:28:17,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=482, Unknown=0, NotChecked=0, Total=600 [2022-02-10 03:28:17,166 INFO L87 Difference]: Start difference. First operand 553 states and 805 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) [2022-02-10 03:28:17,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:28:17,624 INFO L93 Difference]: Finished difference Result 1043 states and 1501 transitions. [2022-02-10 03:28:17,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-10 03:28:17,624 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 [2022-02-10 03:28:17,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:28:17,626 INFO L225 Difference]: With dead ends: 1043 [2022-02-10 03:28:17,626 INFO L226 Difference]: Without dead ends: 989 [2022-02-10 03:28:17,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 44 SyntacticMatches, 4 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=308, Invalid=1252, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 03:28:17,627 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 129 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 173 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:28:17,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 507 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 366 Invalid, 0 Unknown, 173 Unchecked, 0.2s Time] [2022-02-10 03:28:17,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 989 states. [2022-02-10 03:28:17,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 989 to 585. [2022-02-10 03:28:17,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 584 states have (on average 1.4606164383561644) internal successors, (853), 584 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:28:17,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 853 transitions. [2022-02-10 03:28:17,635 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 853 transitions. Word has length 30 [2022-02-10 03:28:17,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:28:17,635 INFO L470 AbstractCegarLoop]: Abstraction has 585 states and 853 transitions. [2022-02-10 03:28:17,635 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) [2022-02-10 03:28:17,635 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 853 transitions. [2022-02-10 03:28:17,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-10 03:28:17,636 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:28:17,636 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:28:17,651 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-02-10 03:28:17,846 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 [2022-02-10 03:28:17,846 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:28:17,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:28:17,847 INFO L85 PathProgramCache]: Analyzing trace with hash -17458467, now seen corresponding path program 23 times [2022-02-10 03:28:17,847 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:28:17,847 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105535897] [2022-02-10 03:28:17,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:28:17,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:28:17,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:28:17,995 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:17,995 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:28:17,995 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105535897] [2022-02-10 03:28:17,995 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105535897] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:28:17,995 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441610270] [2022-02-10 03:28:17,995 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 03:28:17,995 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:28:17,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:28:17,996 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:28:17,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-02-10 03:28:18,018 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-10 03:28:18,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:28:18,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 33 conjunts are in the unsatisfiable core [2022-02-10 03:28:18,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:28:18,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:18,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:18,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:18,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:18,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:18,325 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:18,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:18,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:18,327 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 [2022-02-10 03:28:18,344 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:18,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:28:18,692 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-02-10 03:28:18,692 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 [2022-02-10 03:28:19,088 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 2 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:19,088 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441610270] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:28:19,088 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:28:19,088 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-02-10 03:28:19,088 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787152190] [2022-02-10 03:28:19,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:28:19,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 03:28:19,089 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:28:19,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 03:28:19,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=482, Unknown=0, NotChecked=0, Total=600 [2022-02-10 03:28:19,089 INFO L87 Difference]: Start difference. First operand 585 states and 853 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) [2022-02-10 03:28:19,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:28:19,452 INFO L93 Difference]: Finished difference Result 968 states and 1388 transitions. [2022-02-10 03:28:19,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-10 03:28:19,467 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 [2022-02-10 03:28:19,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:28:19,470 INFO L225 Difference]: With dead ends: 968 [2022-02-10 03:28:19,470 INFO L226 Difference]: Without dead ends: 916 [2022-02-10 03:28:19,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 45 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=269, Invalid=1063, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 03:28:19,470 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 104 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 111 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:28:19,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 495 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 268 Invalid, 0 Unknown, 111 Unchecked, 0.1s Time] [2022-02-10 03:28:19,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2022-02-10 03:28:19,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 601. [2022-02-10 03:28:19,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 600 states have (on average 1.465) internal successors, (879), 600 states have internal predecessors, (879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:28:19,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 879 transitions. [2022-02-10 03:28:19,478 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 879 transitions. Word has length 30 [2022-02-10 03:28:19,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:28:19,478 INFO L470 AbstractCegarLoop]: Abstraction has 601 states and 879 transitions. [2022-02-10 03:28:19,478 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) [2022-02-10 03:28:19,478 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 879 transitions. [2022-02-10 03:28:19,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-10 03:28:19,479 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:28:19,479 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:28:19,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-02-10 03:28:19,694 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 [2022-02-10 03:28:19,695 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:28:19,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:28:19,695 INFO L85 PathProgramCache]: Analyzing trace with hash 2071149896, now seen corresponding path program 24 times [2022-02-10 03:28:19,695 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:28:19,695 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515087754] [2022-02-10 03:28:19,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:28:19,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:28:19,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:28:19,856 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:19,856 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:28:19,856 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515087754] [2022-02-10 03:28:19,856 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515087754] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:28:19,856 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493201390] [2022-02-10 03:28:19,856 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 03:28:19,857 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:28:19,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:28:19,857 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:28:19,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-02-10 03:28:19,879 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-10 03:28:19,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:28:19,880 WARN L261 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 41 conjunts are in the unsatisfiable core [2022-02-10 03:28:19,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:28:20,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:20,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:20,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:20,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:20,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:20,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:20,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:20,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:20,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:20,299 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:20,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:20,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:20,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:20,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:20,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:20,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:20,303 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:20,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:20,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:20,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:20,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:20,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:20,306 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:20,306 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:20,306 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 [2022-02-10 03:28:20,324 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 2 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:20,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:28:20,879 INFO L353 Elim1Store]: treesize reduction 264, result has 47.7 percent of original size [2022-02-10 03:28:20,880 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 [2022-02-10 03:28:21,430 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:21,430 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493201390] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:28:21,430 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:28:21,430 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 31 [2022-02-10 03:28:21,430 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62998983] [2022-02-10 03:28:21,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:28:21,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-10 03:28:21,431 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:28:21,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-10 03:28:21,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=828, Unknown=0, NotChecked=0, Total=992 [2022-02-10 03:28:21,431 INFO L87 Difference]: Start difference. First operand 601 states and 879 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) [2022-02-10 03:28:22,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:28:22,557 INFO L93 Difference]: Finished difference Result 1499 states and 2150 transitions. [2022-02-10 03:28:22,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-02-10 03:28:22,557 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 [2022-02-10 03:28:22,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:28:22,561 INFO L225 Difference]: With dead ends: 1499 [2022-02-10 03:28:22,561 INFO L226 Difference]: Without dead ends: 1472 [2022-02-10 03:28:22,562 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1400 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=691, Invalid=3731, Unknown=0, NotChecked=0, Total=4422 [2022-02-10 03:28:22,563 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 168 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 106 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:28:22,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 724 Invalid, 772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 599 Invalid, 0 Unknown, 106 Unchecked, 0.3s Time] [2022-02-10 03:28:22,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1472 states. [2022-02-10 03:28:22,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1472 to 734. [2022-02-10 03:28:22,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 733 states have (on average 1.4597544338335606) internal successors, (1070), 733 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:28:22,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1070 transitions. [2022-02-10 03:28:22,574 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1070 transitions. Word has length 31 [2022-02-10 03:28:22,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:28:22,574 INFO L470 AbstractCegarLoop]: Abstraction has 734 states and 1070 transitions. [2022-02-10 03:28:22,574 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) [2022-02-10 03:28:22,574 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1070 transitions. [2022-02-10 03:28:22,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-10 03:28:22,575 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:28:22,575 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:28:22,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-02-10 03:28:22,782 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 [2022-02-10 03:28:22,782 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:28:22,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:28:22,783 INFO L85 PathProgramCache]: Analyzing trace with hash -116324168, now seen corresponding path program 25 times [2022-02-10 03:28:22,783 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:28:22,783 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598813153] [2022-02-10 03:28:22,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:28:22,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:28:22,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:28:22,956 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:22,956 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:28:22,956 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598813153] [2022-02-10 03:28:22,956 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598813153] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:28:22,956 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756221416] [2022-02-10 03:28:22,956 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 03:28:22,956 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:28:22,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:28:22,957 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:28:22,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-02-10 03:28:22,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:28:22,981 WARN L261 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 41 conjunts are in the unsatisfiable core [2022-02-10 03:28:22,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:28:23,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:23,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:23,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:23,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:23,410 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:23,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:23,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:23,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:23,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:23,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:23,413 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:23,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:23,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:23,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:23,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:23,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:23,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:23,417 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:23,417 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:23,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:23,418 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 [2022-02-10 03:28:23,448 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:23,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:28:24,006 INFO L353 Elim1Store]: treesize reduction 264, result has 47.7 percent of original size [2022-02-10 03:28:24,007 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 [2022-02-10 03:28:24,678 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:24,678 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756221416] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:28:24,678 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:28:24,678 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 31 [2022-02-10 03:28:24,678 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880235452] [2022-02-10 03:28:24,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:28:24,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-10 03:28:24,678 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:28:24,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-10 03:28:24,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=822, Unknown=0, NotChecked=0, Total=992 [2022-02-10 03:28:24,679 INFO L87 Difference]: Start difference. First operand 734 states and 1070 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) [2022-02-10 03:28:25,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:28:25,631 INFO L93 Difference]: Finished difference Result 1585 states and 2282 transitions. [2022-02-10 03:28:25,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-02-10 03:28:25,631 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 [2022-02-10 03:28:25,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:28:25,634 INFO L225 Difference]: With dead ends: 1585 [2022-02-10 03:28:25,635 INFO L226 Difference]: Without dead ends: 1513 [2022-02-10 03:28:25,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 48 SyntacticMatches, 3 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 979 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=598, Invalid=2824, Unknown=0, NotChecked=0, Total=3422 [2022-02-10 03:28:25,635 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 161 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 192 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:28:25,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 652 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 449 Invalid, 0 Unknown, 192 Unchecked, 0.2s Time] [2022-02-10 03:28:25,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1513 states. [2022-02-10 03:28:25,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1513 to 726. [2022-02-10 03:28:25,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 726 states, 725 states have (on average 1.4455172413793103) internal successors, (1048), 725 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:28:25,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 1048 transitions. [2022-02-10 03:28:25,645 INFO L78 Accepts]: Start accepts. Automaton has 726 states and 1048 transitions. Word has length 31 [2022-02-10 03:28:25,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:28:25,646 INFO L470 AbstractCegarLoop]: Abstraction has 726 states and 1048 transitions. [2022-02-10 03:28:25,646 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) [2022-02-10 03:28:25,646 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states and 1048 transitions. [2022-02-10 03:28:25,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-10 03:28:25,647 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:28:25,647 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:28:25,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-02-10 03:28:25,859 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 [2022-02-10 03:28:25,859 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:28:25,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:28:25,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1068571016, now seen corresponding path program 26 times [2022-02-10 03:28:25,860 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:28:25,860 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610158218] [2022-02-10 03:28:25,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:28:25,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:28:25,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:28:26,049 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:26,049 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:28:26,049 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610158218] [2022-02-10 03:28:26,049 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610158218] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:28:26,049 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536776945] [2022-02-10 03:28:26,049 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:28:26,049 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:28:26,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:28:26,050 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:28:26,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-02-10 03:28:26,072 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:28:26,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:28:26,073 WARN L261 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 41 conjunts are in the unsatisfiable core [2022-02-10 03:28:26,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:28:26,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:26,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:26,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:26,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:26,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:26,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:26,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:26,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:26,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:26,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:26,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:26,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:26,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:26,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:26,496 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:26,496 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:26,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:26,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:26,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:26,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:26,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:26,508 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:26,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:26,511 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:26,512 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 [2022-02-10 03:28:26,530 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 2 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:26,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:28:27,127 INFO L353 Elim1Store]: treesize reduction 264, result has 47.7 percent of original size [2022-02-10 03:28:27,127 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 [2022-02-10 03:28:27,506 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:27,506 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536776945] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:28:27,506 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:28:27,506 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 31 [2022-02-10 03:28:27,506 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941915017] [2022-02-10 03:28:27,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:28:27,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-10 03:28:27,507 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:28:27,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-10 03:28:27,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=809, Unknown=0, NotChecked=0, Total=992 [2022-02-10 03:28:27,507 INFO L87 Difference]: Start difference. First operand 726 states and 1048 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) [2022-02-10 03:28:28,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:28:28,393 INFO L93 Difference]: Finished difference Result 1511 states and 2075 transitions. [2022-02-10 03:28:28,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-10 03:28:28,393 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 [2022-02-10 03:28:28,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:28:28,396 INFO L225 Difference]: With dead ends: 1511 [2022-02-10 03:28:28,396 INFO L226 Difference]: Without dead ends: 1313 [2022-02-10 03:28:28,397 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 [2022-02-10 03:28:28,397 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 374 mSDsluCounter, 964 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 66 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 03:28:28,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [374 Valid, 683 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 702 Invalid, 0 Unknown, 66 Unchecked, 0.4s Time] [2022-02-10 03:28:28,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2022-02-10 03:28:28,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 830. [2022-02-10 03:28:28,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 829 states have (on average 1.457177322074789) internal successors, (1208), 829 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:28:28,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1208 transitions. [2022-02-10 03:28:28,408 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1208 transitions. Word has length 31 [2022-02-10 03:28:28,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:28:28,408 INFO L470 AbstractCegarLoop]: Abstraction has 830 states and 1208 transitions. [2022-02-10 03:28:28,408 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) [2022-02-10 03:28:28,408 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1208 transitions. [2022-02-10 03:28:28,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-10 03:28:28,409 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:28:28,409 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:28:28,425 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-02-10 03:28:28,620 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 [2022-02-10 03:28:28,620 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:28:28,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:28:28,621 INFO L85 PathProgramCache]: Analyzing trace with hash -2101835896, now seen corresponding path program 27 times [2022-02-10 03:28:28,621 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:28:28,621 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636672033] [2022-02-10 03:28:28,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:28:28,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:28:28,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:28:28,816 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:28,816 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:28:28,816 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636672033] [2022-02-10 03:28:28,816 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636672033] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:28:28,816 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378730408] [2022-02-10 03:28:28,816 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:28:28,816 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:28:28,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:28:28,818 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:28:28,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-02-10 03:28:28,839 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-02-10 03:28:28,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:28:28,840 WARN L261 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 41 conjunts are in the unsatisfiable core [2022-02-10 03:28:28,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:28:29,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:29,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:29,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:29,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:29,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:29,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:29,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:29,260 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:29,260 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:29,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:29,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:29,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:29,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:29,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:29,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:29,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:29,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:29,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:29,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:29,265 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:29,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:29,266 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:29,269 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 [2022-02-10 03:28:29,287 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:29,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:28:29,863 INFO L353 Elim1Store]: treesize reduction 264, result has 47.7 percent of original size [2022-02-10 03:28:29,863 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 [2022-02-10 03:28:30,468 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:30,468 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378730408] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:28:30,468 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:28:30,468 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 32 [2022-02-10 03:28:30,468 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598594549] [2022-02-10 03:28:30,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:28:30,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-10 03:28:30,469 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:28:30,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-10 03:28:30,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=877, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 03:28:30,469 INFO L87 Difference]: Start difference. First operand 830 states and 1208 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) [2022-02-10 03:28:31,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:28:31,551 INFO L93 Difference]: Finished difference Result 1643 states and 2353 transitions. [2022-02-10 03:28:31,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-02-10 03:28:31,552 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 [2022-02-10 03:28:31,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:28:31,555 INFO L225 Difference]: With dead ends: 1643 [2022-02-10 03:28:31,555 INFO L226 Difference]: Without dead ends: 1517 [2022-02-10 03:28:31,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1238 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=717, Invalid=3443, Unknown=0, NotChecked=0, Total=4160 [2022-02-10 03:28:31,556 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 275 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 247 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:28:31,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 716 Invalid, 931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 591 Invalid, 0 Unknown, 247 Unchecked, 0.3s Time] [2022-02-10 03:28:31,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1517 states. [2022-02-10 03:28:31,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1517 to 441. [2022-02-10 03:28:31,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 440 states have (on average 1.459090909090909) internal successors, (642), 440 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:28:31,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 642 transitions. [2022-02-10 03:28:31,570 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 642 transitions. Word has length 31 [2022-02-10 03:28:31,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:28:31,570 INFO L470 AbstractCegarLoop]: Abstraction has 441 states and 642 transitions. [2022-02-10 03:28:31,570 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) [2022-02-10 03:28:31,571 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 642 transitions. [2022-02-10 03:28:31,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-10 03:28:31,571 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:28:31,571 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:28:31,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-02-10 03:28:31,787 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 [2022-02-10 03:28:31,787 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:28:31,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:28:31,788 INFO L85 PathProgramCache]: Analyzing trace with hash -810572040, now seen corresponding path program 28 times [2022-02-10 03:28:31,788 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:28:31,788 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902688057] [2022-02-10 03:28:31,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:28:31,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:28:31,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:28:31,983 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:31,983 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:28:31,983 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902688057] [2022-02-10 03:28:31,983 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902688057] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:28:31,983 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592882092] [2022-02-10 03:28:31,983 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:28:31,983 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:28:31,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:28:31,985 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:28:32,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-02-10 03:28:32,014 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:28:32,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:28:32,015 WARN L261 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 41 conjunts are in the unsatisfiable core [2022-02-10 03:28:32,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:28:32,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:32,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:32,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:32,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:32,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:32,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:32,432 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:32,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:32,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:32,433 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:32,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:32,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:32,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:32,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:32,435 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:32,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:32,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:32,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:32,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:32,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:32,439 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:32,439 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 [2022-02-10 03:28:32,457 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:32,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:28:33,053 INFO L353 Elim1Store]: treesize reduction 264, result has 47.7 percent of original size [2022-02-10 03:28:33,054 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 [2022-02-10 03:28:33,579 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:33,579 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592882092] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:28:33,579 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:28:33,579 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 32 [2022-02-10 03:28:33,580 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149293613] [2022-02-10 03:28:33,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:28:33,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-10 03:28:33,580 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:28:33,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-10 03:28:33,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=872, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 03:28:33,580 INFO L87 Difference]: Start difference. First operand 441 states and 642 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) [2022-02-10 03:28:34,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:28:34,095 INFO L93 Difference]: Finished difference Result 886 states and 1254 transitions. [2022-02-10 03:28:34,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-02-10 03:28:34,095 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 [2022-02-10 03:28:34,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:28:34,097 INFO L225 Difference]: With dead ends: 886 [2022-02-10 03:28:34,097 INFO L226 Difference]: Without dead ends: 868 [2022-02-10 03:28:34,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 636 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=402, Invalid=1950, Unknown=0, NotChecked=0, Total=2352 [2022-02-10 03:28:34,098 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 136 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 130 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:28:34,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 524 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 408 Invalid, 0 Unknown, 130 Unchecked, 0.2s Time] [2022-02-10 03:28:34,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2022-02-10 03:28:34,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 533. [2022-02-10 03:28:34,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 532 states have (on average 1.443609022556391) internal successors, (768), 532 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:28:34,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 768 transitions. [2022-02-10 03:28:34,104 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 768 transitions. Word has length 31 [2022-02-10 03:28:34,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:28:34,104 INFO L470 AbstractCegarLoop]: Abstraction has 533 states and 768 transitions. [2022-02-10 03:28:34,105 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) [2022-02-10 03:28:34,105 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 768 transitions. [2022-02-10 03:28:34,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-10 03:28:34,105 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:28:34,105 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:28:34,123 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2022-02-10 03:28:34,318 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 [2022-02-10 03:28:34,318 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:28:34,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:28:34,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1489838552, now seen corresponding path program 29 times [2022-02-10 03:28:34,319 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:28:34,319 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567064174] [2022-02-10 03:28:34,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:28:34,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:28:34,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:28:34,522 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:34,522 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:28:34,522 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567064174] [2022-02-10 03:28:34,522 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567064174] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:28:34,522 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982510255] [2022-02-10 03:28:34,523 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 03:28:34,523 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:28:34,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:28:34,531 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:28:34,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-02-10 03:28:34,554 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-10 03:28:34,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:28:34,555 WARN L261 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 43 conjunts are in the unsatisfiable core [2022-02-10 03:28:34,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:28:34,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:34,978 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:34,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:34,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:34,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:34,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:34,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:34,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:34,982 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:34,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:34,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:34,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:34,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:34,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:34,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:34,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:34,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:34,987 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:34,987 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 36 [2022-02-10 03:28:35,005 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:35,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:28:35,427 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:35,428 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:35,428 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:35,429 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:35,430 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:35,430 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:35,431 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:35,431 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:35,432 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:35,432 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:35,432 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:35,433 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:35,433 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:35,434 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:35,434 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:35,435 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:35,436 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:35,436 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:35,437 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:35,437 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:35,437 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:35,438 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:35,438 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:35,439 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:35,439 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:35,440 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:35,440 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:35,442 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:35,442 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:35,442 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:35,490 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:28:35,491 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 [2022-02-10 03:28:35,707 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:35,708 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982510255] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:28:35,708 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:28:35,708 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 32 [2022-02-10 03:28:35,708 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476059449] [2022-02-10 03:28:35,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:28:35,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-10 03:28:35,709 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:28:35,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-10 03:28:35,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=797, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 03:28:35,710 INFO L87 Difference]: Start difference. First operand 533 states and 768 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) [2022-02-10 03:28:37,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:28:37,506 INFO L93 Difference]: Finished difference Result 1177 states and 1645 transitions. [2022-02-10 03:28:37,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-02-10 03:28:37,507 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 31 [2022-02-10 03:28:37,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:28:37,509 INFO L225 Difference]: With dead ends: 1177 [2022-02-10 03:28:37,509 INFO L226 Difference]: Without dead ends: 1102 [2022-02-10 03:28:37,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1410 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=941, Invalid=4029, Unknown=0, NotChecked=0, Total=4970 [2022-02-10 03:28:37,511 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 301 mSDsluCounter, 1005 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 1033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 174 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 03:28:37,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [301 Valid, 869 Invalid, 1033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 762 Invalid, 0 Unknown, 174 Unchecked, 0.4s Time] [2022-02-10 03:28:37,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1102 states. [2022-02-10 03:28:37,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1102 to 686. [2022-02-10 03:28:37,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 686 states, 685 states have (on average 1.4583941605839417) internal successors, (999), 685 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:28:37,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 999 transitions. [2022-02-10 03:28:37,519 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 999 transitions. Word has length 31 [2022-02-10 03:28:37,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:28:37,519 INFO L470 AbstractCegarLoop]: Abstraction has 686 states and 999 transitions. [2022-02-10 03:28:37,519 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) [2022-02-10 03:28:37,520 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 999 transitions. [2022-02-10 03:28:37,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-10 03:28:37,520 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:28:37,520 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:28:37,536 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-02-10 03:28:37,726 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 [2022-02-10 03:28:37,727 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:28:37,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:28:37,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1822625096, now seen corresponding path program 30 times [2022-02-10 03:28:37,727 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:28:37,727 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826740983] [2022-02-10 03:28:37,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:28:37,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:28:37,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:28:37,916 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:37,916 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:28:37,916 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826740983] [2022-02-10 03:28:37,916 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826740983] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:28:37,916 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061876260] [2022-02-10 03:28:37,916 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 03:28:37,916 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:28:37,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:28:37,917 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:28:37,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-02-10 03:28:37,939 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-02-10 03:28:37,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:28:37,940 WARN L261 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 41 conjunts are in the unsatisfiable core [2022-02-10 03:28:37,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:28:38,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:38,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:38,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:38,480 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:38,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:38,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:38,481 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:38,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:38,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:38,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:38,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:38,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:38,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:38,485 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 [2022-02-10 03:28:38,505 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:38,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:28:39,694 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:39,695 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:39,696 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:39,697 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:39,698 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:39,698 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:39,699 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:39,700 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:39,701 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:39,702 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:39,703 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:39,704 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:39,704 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:39,705 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:39,706 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:39,706 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:39,707 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:39,707 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:39,708 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:39,709 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:39,709 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:39,709 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:39,709 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:39,710 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:39,711 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:39,711 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:39,830 INFO L353 Elim1Store]: treesize reduction 46, result has 76.4 percent of original size [2022-02-10 03:28:39,830 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 [2022-02-10 03:28:40,523 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:40,523 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061876260] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:28:40,523 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:28:40,523 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 30 [2022-02-10 03:28:40,523 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182151652] [2022-02-10 03:28:40,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:28:40,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-10 03:28:40,523 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:28:40,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-10 03:28:40,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=708, Unknown=0, NotChecked=0, Total=930 [2022-02-10 03:28:40,525 INFO L87 Difference]: Start difference. First operand 686 states and 999 transitions. Second operand has 31 states, 31 states have (on average 2.3225806451612905) internal successors, (72), 30 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) [2022-02-10 03:28:40,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:28:40,881 INFO L93 Difference]: Finished difference Result 1118 states and 1555 transitions. [2022-02-10 03:28:40,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-10 03:28:40,882 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.3225806451612905) internal successors, (72), 30 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 31 [2022-02-10 03:28:40,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:28:40,884 INFO L225 Difference]: With dead ends: 1118 [2022-02-10 03:28:40,884 INFO L226 Difference]: Without dead ends: 1025 [2022-02-10 03:28:40,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 41 SyntacticMatches, 6 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=308, Invalid=1024, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 03:28:40,885 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 346 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 335 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:28:40,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [346 Valid, 451 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 320 Invalid, 0 Unknown, 335 Unchecked, 0.1s Time] [2022-02-10 03:28:40,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2022-02-10 03:28:40,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 739. [2022-02-10 03:28:40,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 739 states, 738 states have (on average 1.4471544715447155) internal successors, (1068), 738 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:28:40,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 1068 transitions. [2022-02-10 03:28:40,893 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 1068 transitions. Word has length 31 [2022-02-10 03:28:40,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:28:40,893 INFO L470 AbstractCegarLoop]: Abstraction has 739 states and 1068 transitions. [2022-02-10 03:28:40,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.3225806451612905) internal successors, (72), 30 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) [2022-02-10 03:28:40,893 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 1068 transitions. [2022-02-10 03:28:40,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-10 03:28:40,894 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:28:40,894 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:28:40,917 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-02-10 03:28:41,107 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 [2022-02-10 03:28:41,107 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:28:41,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:28:41,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1297085256, now seen corresponding path program 31 times [2022-02-10 03:28:41,108 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:28:41,108 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666394374] [2022-02-10 03:28:41,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:28:41,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:28:41,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:28:41,302 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:41,302 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:28:41,303 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666394374] [2022-02-10 03:28:41,303 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666394374] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:28:41,303 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315429962] [2022-02-10 03:28:41,303 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 03:28:41,303 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:28:41,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:28:41,304 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:28:41,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-02-10 03:28:41,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:28:41,327 WARN L261 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 41 conjunts are in the unsatisfiable core [2022-02-10 03:28:41,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:28:41,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:41,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:41,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:41,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:41,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:41,714 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:41,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:41,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:41,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:41,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:41,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:41,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:41,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:41,718 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:41,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:41,719 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 [2022-02-10 03:28:41,737 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 2 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:41,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:28:42,315 INFO L353 Elim1Store]: treesize reduction 264, result has 47.7 percent of original size [2022-02-10 03:28:42,315 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 [2022-02-10 03:28:43,059 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:43,060 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315429962] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:28:43,060 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:28:43,060 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 29 [2022-02-10 03:28:43,060 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153213472] [2022-02-10 03:28:43,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:28:43,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-10 03:28:43,061 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:28:43,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-10 03:28:43,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=707, Unknown=0, NotChecked=0, Total=870 [2022-02-10 03:28:43,062 INFO L87 Difference]: Start difference. First operand 739 states and 1068 transitions. Second operand has 30 states, 30 states have (on average 2.3666666666666667) internal successors, (71), 29 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) [2022-02-10 03:28:44,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:28:44,210 INFO L93 Difference]: Finished difference Result 1751 states and 2398 transitions. [2022-02-10 03:28:44,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-02-10 03:28:44,210 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.3666666666666667) internal successors, (71), 29 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 [2022-02-10 03:28:44,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:28:44,214 INFO L225 Difference]: With dead ends: 1751 [2022-02-10 03:28:44,214 INFO L226 Difference]: Without dead ends: 1492 [2022-02-10 03:28:44,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 40 SyntacticMatches, 5 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 843 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=507, Invalid=2573, Unknown=0, NotChecked=0, Total=3080 [2022-02-10 03:28:44,215 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 451 mSDsluCounter, 1221 mSDsCounter, 0 mSdLazyCounter, 866 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 1063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 92 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 03:28:44,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [451 Valid, 852 Invalid, 1063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 866 Invalid, 0 Unknown, 92 Unchecked, 0.4s Time] [2022-02-10 03:28:44,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2022-02-10 03:28:44,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 793. [2022-02-10 03:28:44,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 793 states, 792 states have (on average 1.4722222222222223) internal successors, (1166), 792 states have internal predecessors, (1166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:28:44,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 1166 transitions. [2022-02-10 03:28:44,225 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 1166 transitions. Word has length 31 [2022-02-10 03:28:44,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:28:44,225 INFO L470 AbstractCegarLoop]: Abstraction has 793 states and 1166 transitions. [2022-02-10 03:28:44,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.3666666666666667) internal successors, (71), 29 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) [2022-02-10 03:28:44,225 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 1166 transitions. [2022-02-10 03:28:44,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-10 03:28:44,226 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:28:44,226 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:28:44,242 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2022-02-10 03:28:44,430 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 [2022-02-10 03:28:44,431 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:28:44,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:28:44,431 INFO L85 PathProgramCache]: Analyzing trace with hash -582057800, now seen corresponding path program 32 times [2022-02-10 03:28:44,431 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:28:44,431 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588000025] [2022-02-10 03:28:44,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:28:44,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:28:44,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:28:44,642 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:44,642 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:28:44,642 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588000025] [2022-02-10 03:28:44,642 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588000025] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:28:44,643 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321992733] [2022-02-10 03:28:44,643 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:28:44,643 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:28:44,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:28:44,644 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:28:44,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-02-10 03:28:44,678 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:28:44,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:28:44,679 WARN L261 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 41 conjunts are in the unsatisfiable core [2022-02-10 03:28:44,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:28:45,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:45,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:45,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:45,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:45,100 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:45,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:45,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:45,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:45,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:45,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:45,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:45,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:45,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:45,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:45,105 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:45,105 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 [2022-02-10 03:28:45,123 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:45,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:28:45,685 INFO L353 Elim1Store]: treesize reduction 264, result has 47.7 percent of original size [2022-02-10 03:28:45,685 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 [2022-02-10 03:28:46,283 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:46,283 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321992733] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:28:46,283 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:28:46,283 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 30 [2022-02-10 03:28:46,283 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139316697] [2022-02-10 03:28:46,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:28:46,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-10 03:28:46,284 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:28:46,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-10 03:28:46,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=763, Unknown=0, NotChecked=0, Total=930 [2022-02-10 03:28:46,287 INFO L87 Difference]: Start difference. First operand 793 states and 1166 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) [2022-02-10 03:28:47,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:28:47,096 INFO L93 Difference]: Finished difference Result 1640 states and 2372 transitions. [2022-02-10 03:28:47,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-10 03:28:47,096 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 [2022-02-10 03:28:47,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:28:47,100 INFO L225 Difference]: With dead ends: 1640 [2022-02-10 03:28:47,100 INFO L226 Difference]: Without dead ends: 1572 [2022-02-10 03:28:47,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 40 SyntacticMatches, 4 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 737 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=503, Invalid=2359, Unknown=0, NotChecked=0, Total=2862 [2022-02-10 03:28:47,101 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 222 mSDsluCounter, 930 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 182 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:28:47,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [222 Valid, 772 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 549 Invalid, 0 Unknown, 182 Unchecked, 0.3s Time] [2022-02-10 03:28:47,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1572 states. [2022-02-10 03:28:47,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1572 to 933. [2022-02-10 03:28:47,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 933 states, 932 states have (on average 1.4753218884120172) internal successors, (1375), 932 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:28:47,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 1375 transitions. [2022-02-10 03:28:47,120 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 1375 transitions. Word has length 31 [2022-02-10 03:28:47,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:28:47,120 INFO L470 AbstractCegarLoop]: Abstraction has 933 states and 1375 transitions. [2022-02-10 03:28:47,120 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) [2022-02-10 03:28:47,120 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 1375 transitions. [2022-02-10 03:28:47,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-10 03:28:47,120 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:28:47,121 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:28:47,136 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2022-02-10 03:28:47,321 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 [2022-02-10 03:28:47,321 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:28:47,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:28:47,322 INFO L85 PathProgramCache]: Analyzing trace with hash -124236168, now seen corresponding path program 33 times [2022-02-10 03:28:47,322 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:28:47,322 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234470736] [2022-02-10 03:28:47,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:28:47,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:28:47,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:28:47,556 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:47,556 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:28:47,556 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234470736] [2022-02-10 03:28:47,556 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234470736] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:28:47,556 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848233234] [2022-02-10 03:28:47,556 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:28:47,557 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:28:47,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:28:47,558 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:28:47,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-02-10 03:28:47,578 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-02-10 03:28:47,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:28:47,579 WARN L261 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 41 conjunts are in the unsatisfiable core [2022-02-10 03:28:47,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:28:47,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:47,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:47,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:47,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:47,948 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:47,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:47,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:47,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:47,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:47,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:47,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:47,951 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 [2022-02-10 03:28:47,968 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 2 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:47,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:28:48,514 INFO L353 Elim1Store]: treesize reduction 264, result has 47.7 percent of original size [2022-02-10 03:28:48,515 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 [2022-02-10 03:28:48,952 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:48,952 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848233234] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:28:48,952 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:28:48,952 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 28 [2022-02-10 03:28:48,952 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607377447] [2022-02-10 03:28:48,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:28:48,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-10 03:28:48,953 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:28:48,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-10 03:28:48,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=659, Unknown=0, NotChecked=0, Total=812 [2022-02-10 03:28:48,953 INFO L87 Difference]: Start difference. First operand 933 states and 1375 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) [2022-02-10 03:28:49,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:28:49,829 INFO L93 Difference]: Finished difference Result 1776 states and 2484 transitions. [2022-02-10 03:28:49,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-10 03:28:49,829 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 [2022-02-10 03:28:49,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:28:49,833 INFO L225 Difference]: With dead ends: 1776 [2022-02-10 03:28:49,833 INFO L226 Difference]: Without dead ends: 1596 [2022-02-10 03:28:49,833 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 40 SyntacticMatches, 6 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=378, Invalid=1784, Unknown=0, NotChecked=0, Total=2162 [2022-02-10 03:28:49,833 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 339 mSDsluCounter, 1178 mSDsCounter, 0 mSdLazyCounter, 829 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 1036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 118 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 03:28:49,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 828 Invalid, 1036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 829 Invalid, 0 Unknown, 118 Unchecked, 0.4s Time] [2022-02-10 03:28:49,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1596 states. [2022-02-10 03:28:49,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1596 to 1064. [2022-02-10 03:28:49,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1064 states, 1063 states have (on average 1.4675446848541862) internal successors, (1560), 1063 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:28:49,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1064 states to 1064 states and 1560 transitions. [2022-02-10 03:28:49,846 INFO L78 Accepts]: Start accepts. Automaton has 1064 states and 1560 transitions. Word has length 31 [2022-02-10 03:28:49,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:28:49,846 INFO L470 AbstractCegarLoop]: Abstraction has 1064 states and 1560 transitions. [2022-02-10 03:28:49,846 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) [2022-02-10 03:28:49,846 INFO L276 IsEmpty]: Start isEmpty. Operand 1064 states and 1560 transitions. [2022-02-10 03:28:49,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-10 03:28:49,847 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:28:49,847 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:28:49,862 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2022-02-10 03:28:50,047 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 [2022-02-10 03:28:50,048 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:28:50,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:28:50,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1789954536, now seen corresponding path program 34 times [2022-02-10 03:28:50,048 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:28:50,048 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942413104] [2022-02-10 03:28:50,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:28:50,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:28:50,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:28:50,248 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:50,249 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:28:50,249 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942413104] [2022-02-10 03:28:50,249 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942413104] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:28:50,249 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989897653] [2022-02-10 03:28:50,249 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:28:50,249 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:28:50,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:28:50,250 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:28:50,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-02-10 03:28:50,269 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:28:50,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:28:50,270 WARN L261 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 41 conjunts are in the unsatisfiable core [2022-02-10 03:28:50,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:28:50,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:50,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:50,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:50,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:50,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:50,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:50,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:50,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:50,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:50,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:50,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:50,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:50,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:50,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:50,646 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:50,647 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 [2022-02-10 03:28:50,665 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:50,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:28:51,260 INFO L353 Elim1Store]: treesize reduction 264, result has 47.7 percent of original size [2022-02-10 03:28:51,260 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 [2022-02-10 03:28:51,965 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:51,965 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989897653] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:28:51,965 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:28:51,966 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 28 [2022-02-10 03:28:51,966 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136391830] [2022-02-10 03:28:51,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:28:51,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-10 03:28:51,966 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:28:51,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-10 03:28:51,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=662, Unknown=0, NotChecked=0, Total=812 [2022-02-10 03:28:51,966 INFO L87 Difference]: Start difference. First operand 1064 states and 1560 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) [2022-02-10 03:28:52,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:28:52,824 INFO L93 Difference]: Finished difference Result 1903 states and 2711 transitions. [2022-02-10 03:28:52,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-10 03:28:52,824 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 [2022-02-10 03:28:52,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:28:52,828 INFO L225 Difference]: With dead ends: 1903 [2022-02-10 03:28:52,828 INFO L226 Difference]: Without dead ends: 1855 [2022-02-10 03:28:52,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 40 SyntacticMatches, 6 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 546 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=401, Invalid=1951, Unknown=0, NotChecked=0, Total=2352 [2022-02-10 03:28:52,829 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 165 mSDsluCounter, 1032 mSDsCounter, 0 mSdLazyCounter, 808 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 860 SdHoareTripleChecker+Invalid, 964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 93 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 03:28:52,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 860 Invalid, 964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 808 Invalid, 0 Unknown, 93 Unchecked, 0.4s Time] [2022-02-10 03:28:52,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1855 states. [2022-02-10 03:28:52,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1855 to 1055. [2022-02-10 03:28:52,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1055 states, 1054 states have (on average 1.4715370018975331) internal successors, (1551), 1054 states have internal predecessors, (1551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:28:52,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1551 transitions. [2022-02-10 03:28:52,843 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1551 transitions. Word has length 31 [2022-02-10 03:28:52,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:28:52,843 INFO L470 AbstractCegarLoop]: Abstraction has 1055 states and 1551 transitions. [2022-02-10 03:28:52,843 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) [2022-02-10 03:28:52,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1551 transitions. [2022-02-10 03:28:52,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-10 03:28:52,844 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:28:52,844 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:28:52,860 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2022-02-10 03:28:53,045 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 [2022-02-10 03:28:53,045 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:28:53,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:28:53,045 INFO L85 PathProgramCache]: Analyzing trace with hash -2003379224, now seen corresponding path program 35 times [2022-02-10 03:28:53,045 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:28:53,045 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255010119] [2022-02-10 03:28:53,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:28:53,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:28:53,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:28:53,257 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:53,257 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:28:53,257 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255010119] [2022-02-10 03:28:53,257 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255010119] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:28:53,257 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602909664] [2022-02-10 03:28:53,257 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 03:28:53,257 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:28:53,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:28:53,258 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:28:53,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-02-10 03:28:53,281 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-10 03:28:53,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:28:53,282 WARN L261 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 42 conjunts are in the unsatisfiable core [2022-02-10 03:28:53,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:28:53,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:53,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:53,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:53,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:53,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:53,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:53,721 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:53,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:53,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:53,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:53,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:53,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:53,725 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:53,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:53,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:53,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:53,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:53,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:53,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:53,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:53,729 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:53,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:53,730 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:53,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:53,731 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:53,732 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 67 treesize of output 31 [2022-02-10 03:28:53,758 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:53,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:28:54,306 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:54,307 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:54,307 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:54,308 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:54,309 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:54,310 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:54,310 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:54,310 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:54,311 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:54,311 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:54,312 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:54,312 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:54,313 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:54,313 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:54,314 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:54,314 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:54,319 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:54,320 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:54,320 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:54,320 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:54,321 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:54,321 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:54,322 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:54,322 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:54,322 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:54,323 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:54,323 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:54,325 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:54,325 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:54,326 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:54,370 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:28:54,370 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 [2022-02-10 03:28:54,665 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:54,665 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602909664] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:28:54,665 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:28:54,666 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 35 [2022-02-10 03:28:54,666 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970287146] [2022-02-10 03:28:54,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:28:54,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-02-10 03:28:54,666 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:28:54,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-02-10 03:28:54,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=992, Unknown=0, NotChecked=0, Total=1260 [2022-02-10 03:28:54,666 INFO L87 Difference]: Start difference. First operand 1055 states and 1551 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) [2022-02-10 03:28:57,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:28:57,994 INFO L93 Difference]: Finished difference Result 2078 states and 2933 transitions. [2022-02-10 03:28:57,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-02-10 03:28:57,995 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 [2022-02-10 03:28:57,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:28:57,998 INFO L225 Difference]: With dead ends: 2078 [2022-02-10 03:28:57,998 INFO L226 Difference]: Without dead ends: 1968 [2022-02-10 03:28:57,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 40 SyntacticMatches, 4 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2410 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1465, Invalid=7655, Unknown=0, NotChecked=0, Total=9120 [2022-02-10 03:28:58,003 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 362 mSDsluCounter, 988 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 876 SdHoareTripleChecker+Invalid, 1044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 238 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 03:28:58,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [362 Valid, 876 Invalid, 1044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 662 Invalid, 0 Unknown, 238 Unchecked, 0.5s Time] [2022-02-10 03:28:58,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1968 states. [2022-02-10 03:28:58,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1968 to 1204. [2022-02-10 03:28:58,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1204 states, 1203 states have (on average 1.4671654197838737) internal successors, (1765), 1203 states have internal predecessors, (1765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:28:58,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1204 states to 1204 states and 1765 transitions. [2022-02-10 03:28:58,020 INFO L78 Accepts]: Start accepts. Automaton has 1204 states and 1765 transitions. Word has length 31 [2022-02-10 03:28:58,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:28:58,020 INFO L470 AbstractCegarLoop]: Abstraction has 1204 states and 1765 transitions. [2022-02-10 03:28:58,020 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) [2022-02-10 03:28:58,020 INFO L276 IsEmpty]: Start isEmpty. Operand 1204 states and 1765 transitions. [2022-02-10 03:28:58,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-10 03:28:58,021 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:28:58,021 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:28:58,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-02-10 03:28:58,221 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 [2022-02-10 03:28:58,222 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:28:58,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:28:58,222 INFO L85 PathProgramCache]: Analyzing trace with hash -628905352, now seen corresponding path program 36 times [2022-02-10 03:28:58,222 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:28:58,222 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015170876] [2022-02-10 03:28:58,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:28:58,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:28:58,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:28:58,440 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:58,441 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:28:58,441 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015170876] [2022-02-10 03:28:58,441 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015170876] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:28:58,441 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565236405] [2022-02-10 03:28:58,441 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 03:28:58,441 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:28:58,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:28:58,442 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:28:58,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-02-10 03:28:58,468 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-02-10 03:28:58,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:28:58,468 WARN L261 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 41 conjunts are in the unsatisfiable core [2022-02-10 03:28:58,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:28:59,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:59,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:59,116 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:59,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:59,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:59,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:59,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:59,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:59,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:59,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:59,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:59,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:59,121 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:28:59,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:28:59,122 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 [2022-02-10 03:28:59,140 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:28:59,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:29:00,239 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:00,240 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:00,240 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:00,243 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:00,243 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:00,244 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:00,244 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:00,246 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:00,246 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:00,247 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:00,247 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:00,248 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:00,248 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:00,248 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:00,250 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:00,250 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:00,250 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:00,251 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:00,252 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:00,252 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:00,253 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:00,254 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:00,255 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:00,255 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:00,256 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:00,256 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:00,363 INFO L353 Elim1Store]: treesize reduction 46, result has 76.4 percent of original size [2022-02-10 03:29:00,364 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 [2022-02-10 03:29:00,726 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:29:00,726 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565236405] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:29:00,726 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:29:00,726 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 31 [2022-02-10 03:29:00,726 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595589367] [2022-02-10 03:29:00,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:29:00,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-10 03:29:00,727 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:29:00,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-10 03:29:00,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=788, Unknown=0, NotChecked=0, Total=992 [2022-02-10 03:29:00,727 INFO L87 Difference]: Start difference. First operand 1204 states and 1765 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) [2022-02-10 03:29:01,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:29:01,708 INFO L93 Difference]: Finished difference Result 1341 states and 1947 transitions. [2022-02-10 03:29:01,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-10 03:29:01,708 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 [2022-02-10 03:29:01,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:29:01,710 INFO L225 Difference]: With dead ends: 1341 [2022-02-10 03:29:01,710 INFO L226 Difference]: Without dead ends: 1332 [2022-02-10 03:29:01,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=439, Invalid=1913, Unknown=0, NotChecked=0, Total=2352 [2022-02-10 03:29:01,711 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 181 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 191 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 03:29:01,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 556 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 191 Unchecked, 0.0s Time] [2022-02-10 03:29:01,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1332 states. [2022-02-10 03:29:01,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1332 to 1249. [2022-02-10 03:29:01,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1249 states, 1248 states have (on average 1.4775641025641026) internal successors, (1844), 1248 states have internal predecessors, (1844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:29:01,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 1844 transitions. [2022-02-10 03:29:01,725 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 1844 transitions. Word has length 31 [2022-02-10 03:29:01,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:29:01,725 INFO L470 AbstractCegarLoop]: Abstraction has 1249 states and 1844 transitions. [2022-02-10 03:29:01,725 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) [2022-02-10 03:29:01,725 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 1844 transitions. [2022-02-10 03:29:01,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-02-10 03:29:01,726 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:29:01,726 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:29:01,743 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2022-02-10 03:29:01,939 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 [2022-02-10 03:29:01,939 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:29:01,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:29:01,940 INFO L85 PathProgramCache]: Analyzing trace with hash 817358165, now seen corresponding path program 37 times [2022-02-10 03:29:01,940 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:29:01,940 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656846271] [2022-02-10 03:29:01,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:29:01,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:29:01,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:29:02,152 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:29:02,153 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:29:02,153 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656846271] [2022-02-10 03:29:02,153 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656846271] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:29:02,153 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858889060] [2022-02-10 03:29:02,153 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 03:29:02,153 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:29:02,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:29:02,154 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:29:02,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-02-10 03:29:02,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:29:02,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 41 conjunts are in the unsatisfiable core [2022-02-10 03:29:02,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:29:02,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:02,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:02,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:02,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:02,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:02,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:02,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:02,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:02,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:02,641 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:02,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:02,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:02,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:02,648 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 [2022-02-10 03:29:02,666 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:29:02,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:29:03,225 INFO L353 Elim1Store]: treesize reduction 264, result has 47.7 percent of original size [2022-02-10 03:29:03,225 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 [2022-02-10 03:29:03,798 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 3 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:29:03,799 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858889060] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:29:03,799 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:29:03,799 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 29 [2022-02-10 03:29:03,799 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301957387] [2022-02-10 03:29:03,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:29:03,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-10 03:29:03,799 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:29:03,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-10 03:29:03,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=714, Unknown=0, NotChecked=0, Total=870 [2022-02-10 03:29:03,800 INFO L87 Difference]: Start difference. First operand 1249 states and 1844 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) [2022-02-10 03:29:04,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:29:04,701 INFO L93 Difference]: Finished difference Result 2063 states and 2991 transitions. [2022-02-10 03:29:04,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-02-10 03:29:04,701 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 [2022-02-10 03:29:04,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:29:04,704 INFO L225 Difference]: With dead ends: 2063 [2022-02-10 03:29:04,704 INFO L226 Difference]: Without dead ends: 2009 [2022-02-10 03:29:04,705 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 798 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=578, Invalid=2614, Unknown=0, NotChecked=0, Total=3192 [2022-02-10 03:29:04,705 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 190 mSDsluCounter, 847 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 179 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:29:04,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [190 Valid, 743 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 582 Invalid, 0 Unknown, 179 Unchecked, 0.3s Time] [2022-02-10 03:29:04,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2009 states. [2022-02-10 03:29:04,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2009 to 1279. [2022-02-10 03:29:04,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1279 states, 1278 states have (on average 1.4765258215962442) internal successors, (1887), 1278 states have internal predecessors, (1887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:29:04,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1279 states to 1279 states and 1887 transitions. [2022-02-10 03:29:04,720 INFO L78 Accepts]: Start accepts. Automaton has 1279 states and 1887 transitions. Word has length 34 [2022-02-10 03:29:04,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:29:04,720 INFO L470 AbstractCegarLoop]: Abstraction has 1279 states and 1887 transitions. [2022-02-10 03:29:04,720 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) [2022-02-10 03:29:04,720 INFO L276 IsEmpty]: Start isEmpty. Operand 1279 states and 1887 transitions. [2022-02-10 03:29:04,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-02-10 03:29:04,721 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:29:04,721 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:29:04,737 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2022-02-10 03:29:04,924 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 [2022-02-10 03:29:04,924 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:29:04,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:29:04,925 INFO L85 PathProgramCache]: Analyzing trace with hash -682796923, now seen corresponding path program 38 times [2022-02-10 03:29:04,925 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:29:04,925 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763387629] [2022-02-10 03:29:04,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:29:04,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:29:04,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:29:05,123 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:29:05,123 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:29:05,123 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763387629] [2022-02-10 03:29:05,123 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763387629] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:29:05,124 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140213357] [2022-02-10 03:29:05,124 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:29:05,124 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:29:05,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:29:05,125 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:29:05,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-02-10 03:29:05,146 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:29:05,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:29:05,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 41 conjunts are in the unsatisfiable core [2022-02-10 03:29:05,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:29:05,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:05,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:05,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:05,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:05,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:05,589 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:05,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:05,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:05,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:05,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:05,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:05,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:05,593 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 [2022-02-10 03:29:05,611 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:29:05,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:29:06,180 INFO L353 Elim1Store]: treesize reduction 264, result has 47.7 percent of original size [2022-02-10 03:29:06,180 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 [2022-02-10 03:29:06,653 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 5 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:29:06,654 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140213357] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:29:06,654 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:29:06,654 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 29 [2022-02-10 03:29:06,654 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468424526] [2022-02-10 03:29:06,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:29:06,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-10 03:29:06,654 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:29:06,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-10 03:29:06,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=714, Unknown=0, NotChecked=0, Total=870 [2022-02-10 03:29:06,655 INFO L87 Difference]: Start difference. First operand 1279 states and 1887 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) [2022-02-10 03:29:07,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:29:07,574 INFO L93 Difference]: Finished difference Result 1699 states and 2456 transitions. [2022-02-10 03:29:07,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-02-10 03:29:07,579 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 [2022-02-10 03:29:07,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:29:07,582 INFO L225 Difference]: With dead ends: 1699 [2022-02-10 03:29:07,582 INFO L226 Difference]: Without dead ends: 1692 [2022-02-10 03:29:07,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 53 SyntacticMatches, 5 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 933 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=598, Invalid=2942, Unknown=0, NotChecked=0, Total=3540 [2022-02-10 03:29:07,583 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 153 mSDsluCounter, 769 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 190 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:29:07,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 719 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 402 Invalid, 0 Unknown, 190 Unchecked, 0.2s Time] [2022-02-10 03:29:07,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1692 states. [2022-02-10 03:29:07,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1692 to 1393. [2022-02-10 03:29:07,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1393 states, 1392 states have (on average 1.4777298850574712) internal successors, (2057), 1392 states have internal predecessors, (2057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:29:07,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1393 states to 1393 states and 2057 transitions. [2022-02-10 03:29:07,600 INFO L78 Accepts]: Start accepts. Automaton has 1393 states and 2057 transitions. Word has length 34 [2022-02-10 03:29:07,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:29:07,601 INFO L470 AbstractCegarLoop]: Abstraction has 1393 states and 2057 transitions. [2022-02-10 03:29:07,601 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) [2022-02-10 03:29:07,601 INFO L276 IsEmpty]: Start isEmpty. Operand 1393 states and 2057 transitions. [2022-02-10 03:29:07,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-02-10 03:29:07,602 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:29:07,602 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:29:07,618 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2022-02-10 03:29:07,807 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 [2022-02-10 03:29:07,807 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:29:07,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:29:07,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1223510759, now seen corresponding path program 39 times [2022-02-10 03:29:07,808 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:29:07,808 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135676548] [2022-02-10 03:29:07,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:29:07,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:29:07,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:29:08,019 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 03:29:08,020 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:29:08,020 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135676548] [2022-02-10 03:29:08,020 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135676548] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:29:08,020 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646418552] [2022-02-10 03:29:08,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:29:08,020 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:29:08,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:29:08,021 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:29:08,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-02-10 03:29:08,044 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-02-10 03:29:08,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:29:08,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 41 conjunts are in the unsatisfiable core [2022-02-10 03:29:08,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:29:08,384 INFO L353 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2022-02-10 03:29:08,384 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 [2022-02-10 03:29:08,410 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 03:29:08,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:29:08,974 INFO L353 Elim1Store]: treesize reduction 264, result has 47.7 percent of original size [2022-02-10 03:29:08,974 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 [2022-02-10 03:29:09,549 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 6 proven. 49 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 03:29:09,549 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646418552] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:29:09,549 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:29:09,549 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 28 [2022-02-10 03:29:09,549 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299658022] [2022-02-10 03:29:09,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:29:09,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-10 03:29:09,550 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:29:09,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-10 03:29:09,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=667, Unknown=0, NotChecked=0, Total=812 [2022-02-10 03:29:09,550 INFO L87 Difference]: Start difference. First operand 1393 states and 2057 transitions. Second operand has 29 states, 29 states have (on average 2.3793103448275863) internal successors, (69), 28 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:29:10,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:29:10,330 INFO L93 Difference]: Finished difference Result 2169 states and 3155 transitions. [2022-02-10 03:29:10,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-02-10 03:29:10,331 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.3793103448275863) internal successors, (69), 28 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 34 [2022-02-10 03:29:10,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:29:10,334 INFO L225 Difference]: With dead ends: 2169 [2022-02-10 03:29:10,334 INFO L226 Difference]: Without dead ends: 2147 [2022-02-10 03:29:10,334 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 [2022-02-10 03:29:10,334 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 150 mSDsluCounter, 779 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 03:29:10,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 739 Invalid, 828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 03:29:10,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2147 states. [2022-02-10 03:29:10,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2147 to 1367. [2022-02-10 03:29:10,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1367 states, 1366 states have (on average 1.479502196193265) internal successors, (2021), 1366 states have internal predecessors, (2021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:29:10,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1367 states to 1367 states and 2021 transitions. [2022-02-10 03:29:10,350 INFO L78 Accepts]: Start accepts. Automaton has 1367 states and 2021 transitions. Word has length 34 [2022-02-10 03:29:10,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:29:10,350 INFO L470 AbstractCegarLoop]: Abstraction has 1367 states and 2021 transitions. [2022-02-10 03:29:10,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.3793103448275863) internal successors, (69), 28 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:29:10,350 INFO L276 IsEmpty]: Start isEmpty. Operand 1367 states and 2021 transitions. [2022-02-10 03:29:10,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-02-10 03:29:10,351 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:29:10,351 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:29:10,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-02-10 03:29:10,571 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 [2022-02-10 03:29:10,572 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:29:10,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:29:10,572 INFO L85 PathProgramCache]: Analyzing trace with hash -20133360, now seen corresponding path program 40 times [2022-02-10 03:29:10,572 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:29:10,572 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610483345] [2022-02-10 03:29:10,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:29:10,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:29:10,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:29:10,809 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:29:10,809 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:29:10,809 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610483345] [2022-02-10 03:29:10,809 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610483345] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:29:10,809 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579528229] [2022-02-10 03:29:10,809 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:29:10,809 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:29:10,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:29:10,811 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:29:10,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-02-10 03:29:10,832 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:29:10,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:29:10,833 WARN L261 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 49 conjunts are in the unsatisfiable core [2022-02-10 03:29:10,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:29:11,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:11,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:11,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:11,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:11,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:11,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:11,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:11,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:11,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:11,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:11,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:11,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:11,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:11,443 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:11,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:11,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:11,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:11,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:11,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:11,446 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:11,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:11,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:11,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:11,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:11,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:11,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:11,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:11,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:11,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:11,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:11,452 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:11,452 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:11,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:11,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:11,454 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:11,454 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 [2022-02-10 03:29:11,474 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:29:11,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:29:12,345 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-02-10 03:29:12,346 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 [2022-02-10 03:29:13,286 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 3 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:29:13,286 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579528229] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:29:13,286 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:29:13,286 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 37 [2022-02-10 03:29:13,286 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024257417] [2022-02-10 03:29:13,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:29:13,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-10 03:29:13,286 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:29:13,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-10 03:29:13,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=1179, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 03:29:13,287 INFO L87 Difference]: Start difference. First operand 1367 states and 2021 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) [2022-02-10 03:29:14,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:29:14,463 INFO L93 Difference]: Finished difference Result 2877 states and 4157 transitions. [2022-02-10 03:29:14,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-02-10 03:29:14,464 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 [2022-02-10 03:29:14,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:29:14,468 INFO L225 Difference]: With dead ends: 2877 [2022-02-10 03:29:14,468 INFO L226 Difference]: Without dead ends: 2819 [2022-02-10 03:29:14,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 46 SyntacticMatches, 3 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1318 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=720, Invalid=3702, Unknown=0, NotChecked=0, Total=4422 [2022-02-10 03:29:14,469 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 242 mSDsluCounter, 1192 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 261 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:29:14,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 1022 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 655 Invalid, 0 Unknown, 261 Unchecked, 0.3s Time] [2022-02-10 03:29:14,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2819 states. [2022-02-10 03:29:14,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2819 to 1823. [2022-02-10 03:29:14,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1823 states, 1822 states have (on average 1.4972557628979144) internal successors, (2728), 1822 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:29:14,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1823 states to 1823 states and 2728 transitions. [2022-02-10 03:29:14,490 INFO L78 Accepts]: Start accepts. Automaton has 1823 states and 2728 transitions. Word has length 35 [2022-02-10 03:29:14,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:29:14,490 INFO L470 AbstractCegarLoop]: Abstraction has 1823 states and 2728 transitions. [2022-02-10 03:29:14,490 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) [2022-02-10 03:29:14,490 INFO L276 IsEmpty]: Start isEmpty. Operand 1823 states and 2728 transitions. [2022-02-10 03:29:14,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-02-10 03:29:14,491 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:29:14,491 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:29:14,507 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2022-02-10 03:29:14,703 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 [2022-02-10 03:29:14,703 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:29:14,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:29:14,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1475895520, now seen corresponding path program 41 times [2022-02-10 03:29:14,704 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:29:14,704 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085065875] [2022-02-10 03:29:14,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:29:14,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:29:14,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:29:14,940 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:29:14,940 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:29:14,940 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085065875] [2022-02-10 03:29:14,940 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085065875] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:29:14,940 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905174670] [2022-02-10 03:29:14,940 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 03:29:14,941 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:29:14,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:29:14,942 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:29:14,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-02-10 03:29:14,965 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-10 03:29:14,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:29:14,966 WARN L261 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 49 conjunts are in the unsatisfiable core [2022-02-10 03:29:14,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:29:15,569 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:15,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:15,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:15,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:15,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:15,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:15,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:15,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:15,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:15,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:15,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:15,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:15,577 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:15,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:15,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:15,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:15,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:15,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:15,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:15,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:15,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:15,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:15,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:15,598 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:15,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:15,599 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:15,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:15,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:15,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:15,609 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:15,611 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 [2022-02-10 03:29:15,653 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:29:15,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:29:16,536 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-02-10 03:29:16,536 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 [2022-02-10 03:29:17,379 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 3 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:29:17,380 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905174670] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:29:17,380 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:29:17,380 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 38 [2022-02-10 03:29:17,380 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226028233] [2022-02-10 03:29:17,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:29:17,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-10 03:29:17,381 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:29:17,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-10 03:29:17,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=1246, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 03:29:17,381 INFO L87 Difference]: Start difference. First operand 1823 states and 2728 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) [2022-02-10 03:29:18,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:29:18,699 INFO L93 Difference]: Finished difference Result 3223 states and 4742 transitions. [2022-02-10 03:29:18,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-02-10 03:29:18,699 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 [2022-02-10 03:29:18,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:29:18,704 INFO L225 Difference]: With dead ends: 3223 [2022-02-10 03:29:18,704 INFO L226 Difference]: Without dead ends: 3024 [2022-02-10 03:29:18,705 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 [2022-02-10 03:29:18,705 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 285 mSDsluCounter, 1693 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 1260 SdHoareTripleChecker+Invalid, 1464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 470 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 03:29:18,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [285 Valid, 1260 Invalid, 1464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 912 Invalid, 0 Unknown, 470 Unchecked, 0.4s Time] [2022-02-10 03:29:18,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3024 states. [2022-02-10 03:29:18,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3024 to 1148. [2022-02-10 03:29:18,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1148 states, 1147 states have (on average 1.4402789886660854) internal successors, (1652), 1147 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:29:18,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1148 states to 1148 states and 1652 transitions. [2022-02-10 03:29:18,725 INFO L78 Accepts]: Start accepts. Automaton has 1148 states and 1652 transitions. Word has length 35 [2022-02-10 03:29:18,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:29:18,725 INFO L470 AbstractCegarLoop]: Abstraction has 1148 states and 1652 transitions. [2022-02-10 03:29:18,725 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) [2022-02-10 03:29:18,725 INFO L276 IsEmpty]: Start isEmpty. Operand 1148 states and 1652 transitions. [2022-02-10 03:29:18,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-02-10 03:29:18,726 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:29:18,726 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:29:18,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-02-10 03:29:18,942 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 [2022-02-10 03:29:18,943 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:29:18,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:29:18,943 INFO L85 PathProgramCache]: Analyzing trace with hash 248311584, now seen corresponding path program 42 times [2022-02-10 03:29:18,943 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:29:18,943 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764512623] [2022-02-10 03:29:18,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:29:18,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:29:18,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:29:19,167 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:29:19,167 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:29:19,167 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764512623] [2022-02-10 03:29:19,167 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764512623] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:29:19,167 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179046930] [2022-02-10 03:29:19,167 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 03:29:19,167 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:29:19,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:29:19,168 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:29:19,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-02-10 03:29:19,191 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-02-10 03:29:19,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:29:19,192 WARN L261 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 49 conjunts are in the unsatisfiable core [2022-02-10 03:29:19,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:29:19,768 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:19,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:19,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:19,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:19,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:19,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:19,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:19,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:19,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:19,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:19,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:19,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:19,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:19,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:19,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:19,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:19,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:19,778 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:19,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:19,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:19,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:19,780 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:19,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:19,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:19,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:19,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:19,782 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:19,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:19,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:19,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:19,784 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:19,786 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 [2022-02-10 03:29:19,804 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 4 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:29:19,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:29:20,661 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-02-10 03:29:20,661 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 [2022-02-10 03:29:21,404 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 6 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:29:21,404 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179046930] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:29:21,404 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:29:21,404 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 15] total 36 [2022-02-10 03:29:21,405 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998115632] [2022-02-10 03:29:21,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:29:21,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-10 03:29:21,405 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:29:21,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-10 03:29:21,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=1082, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 03:29:21,405 INFO L87 Difference]: Start difference. First operand 1148 states and 1652 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) [2022-02-10 03:29:22,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:29:22,492 INFO L93 Difference]: Finished difference Result 1928 states and 2674 transitions. [2022-02-10 03:29:22,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-10 03:29:22,492 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 [2022-02-10 03:29:22,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:29:22,499 INFO L225 Difference]: With dead ends: 1928 [2022-02-10 03:29:22,499 INFO L226 Difference]: Without dead ends: 1748 [2022-02-10 03:29:22,500 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 [2022-02-10 03:29:22,500 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 340 mSDsluCounter, 1356 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 1134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 94 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 03:29:22,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 950 Invalid, 1134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 949 Invalid, 0 Unknown, 94 Unchecked, 0.5s Time] [2022-02-10 03:29:22,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1748 states. [2022-02-10 03:29:22,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1748 to 1265. [2022-02-10 03:29:22,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1265 states, 1264 states have (on average 1.442246835443038) internal successors, (1823), 1264 states have internal predecessors, (1823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:29:22,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1265 states to 1265 states and 1823 transitions. [2022-02-10 03:29:22,514 INFO L78 Accepts]: Start accepts. Automaton has 1265 states and 1823 transitions. Word has length 35 [2022-02-10 03:29:22,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:29:22,515 INFO L470 AbstractCegarLoop]: Abstraction has 1265 states and 1823 transitions. [2022-02-10 03:29:22,515 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) [2022-02-10 03:29:22,515 INFO L276 IsEmpty]: Start isEmpty. Operand 1265 states and 1823 transitions. [2022-02-10 03:29:22,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-02-10 03:29:22,516 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:29:22,516 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:29:22,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-02-10 03:29:22,732 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 [2022-02-10 03:29:22,733 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:29:22,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:29:22,733 INFO L85 PathProgramCache]: Analyzing trace with hash -2121961904, now seen corresponding path program 43 times [2022-02-10 03:29:22,733 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:29:22,733 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041255972] [2022-02-10 03:29:22,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:29:22,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:29:22,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:29:22,939 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:29:22,939 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:29:22,939 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041255972] [2022-02-10 03:29:22,939 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041255972] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:29:22,939 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538790698] [2022-02-10 03:29:22,939 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 03:29:22,939 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:29:22,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:29:22,940 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:29:22,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-02-10 03:29:22,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:29:22,967 WARN L261 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 49 conjunts are in the unsatisfiable core [2022-02-10 03:29:22,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:29:23,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:23,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:23,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:23,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:23,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:23,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:23,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:23,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:23,556 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:23,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:23,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:23,558 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:23,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:23,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:23,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:23,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:23,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:23,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:23,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:23,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:23,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:23,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:23,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:23,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:23,564 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:23,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:23,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:23,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:23,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:23,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:23,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:23,574 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:23,574 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:23,575 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 [2022-02-10 03:29:23,592 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:29:23,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:29:24,439 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-02-10 03:29:24,439 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 [2022-02-10 03:29:25,400 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 6 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:29:25,400 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538790698] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:29:25,400 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:29:25,400 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 15] total 36 [2022-02-10 03:29:25,400 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485003227] [2022-02-10 03:29:25,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:29:25,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-10 03:29:25,401 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:29:25,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-10 03:29:25,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=1099, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 03:29:25,401 INFO L87 Difference]: Start difference. First operand 1265 states and 1823 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) [2022-02-10 03:29:26,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:29:26,422 INFO L93 Difference]: Finished difference Result 2031 states and 2865 transitions. [2022-02-10 03:29:26,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-10 03:29:26,422 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 [2022-02-10 03:29:26,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:29:26,425 INFO L225 Difference]: With dead ends: 2031 [2022-02-10 03:29:26,425 INFO L226 Difference]: Without dead ends: 1983 [2022-02-10 03:29:26,426 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 [2022-02-10 03:29:26,426 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 202 mSDsluCounter, 961 mSDsCounter, 0 mSdLazyCounter, 729 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 131 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 03:29:26,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [202 Valid, 848 Invalid, 949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 729 Invalid, 0 Unknown, 131 Unchecked, 0.4s Time] [2022-02-10 03:29:26,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1983 states. [2022-02-10 03:29:26,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1983 to 1250. [2022-02-10 03:29:26,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 1249 states have (on average 1.4411529223378703) internal successors, (1800), 1249 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:29:26,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 1800 transitions. [2022-02-10 03:29:26,441 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 1800 transitions. Word has length 35 [2022-02-10 03:29:26,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:29:26,441 INFO L470 AbstractCegarLoop]: Abstraction has 1250 states and 1800 transitions. [2022-02-10 03:29:26,441 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) [2022-02-10 03:29:26,441 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 1800 transitions. [2022-02-10 03:29:26,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-02-10 03:29:26,442 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:29:26,442 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:29:26,458 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-02-10 03:29:26,658 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 [2022-02-10 03:29:26,658 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:29:26,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:29:26,658 INFO L85 PathProgramCache]: Analyzing trace with hash 208816208, now seen corresponding path program 44 times [2022-02-10 03:29:26,659 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:29:26,659 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152400236] [2022-02-10 03:29:26,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:29:26,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:29:26,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:29:26,905 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:29:26,905 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:29:26,905 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152400236] [2022-02-10 03:29:26,905 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152400236] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:29:26,905 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61401198] [2022-02-10 03:29:26,905 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:29:26,905 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:29:26,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:29:26,906 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:29:26,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-02-10 03:29:26,927 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:29:26,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:29:26,928 WARN L261 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 49 conjunts are in the unsatisfiable core [2022-02-10 03:29:26,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:29:27,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:27,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:27,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:27,522 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:27,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:27,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:27,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:27,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:27,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:27,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:27,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:27,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:27,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:27,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:27,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:27,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:27,528 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:27,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:27,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:27,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:27,530 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:27,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:27,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:27,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:27,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:27,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:27,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:27,535 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:27,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:27,536 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:27,536 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 [2022-02-10 03:29:27,554 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:29:27,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:29:28,431 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-02-10 03:29:28,431 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 [2022-02-10 03:29:29,256 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 6 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:29:29,257 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61401198] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:29:29,257 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:29:29,257 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 38 [2022-02-10 03:29:29,257 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843959019] [2022-02-10 03:29:29,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:29:29,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-10 03:29:29,257 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:29:29,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-10 03:29:29,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=1243, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 03:29:29,258 INFO L87 Difference]: Start difference. First operand 1250 states and 1800 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) [2022-02-10 03:29:30,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:29:30,107 INFO L93 Difference]: Finished difference Result 2088 states and 2968 transitions. [2022-02-10 03:29:30,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-10 03:29:30,107 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 [2022-02-10 03:29:30,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:29:30,109 INFO L225 Difference]: With dead ends: 2088 [2022-02-10 03:29:30,109 INFO L226 Difference]: Without dead ends: 2029 [2022-02-10 03:29:30,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=551, Invalid=2871, Unknown=0, NotChecked=0, Total=3422 [2022-02-10 03:29:30,110 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 207 mSDsluCounter, 950 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 260 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:29:30,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 846 Invalid, 966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 631 Invalid, 0 Unknown, 260 Unchecked, 0.3s Time] [2022-02-10 03:29:30,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2029 states. [2022-02-10 03:29:30,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2029 to 1356. [2022-02-10 03:29:30,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1356 states, 1355 states have (on average 1.4420664206642066) internal successors, (1954), 1355 states have internal predecessors, (1954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:29:30,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1356 states to 1356 states and 1954 transitions. [2022-02-10 03:29:30,124 INFO L78 Accepts]: Start accepts. Automaton has 1356 states and 1954 transitions. Word has length 35 [2022-02-10 03:29:30,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:29:30,124 INFO L470 AbstractCegarLoop]: Abstraction has 1356 states and 1954 transitions. [2022-02-10 03:29:30,124 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) [2022-02-10 03:29:30,124 INFO L276 IsEmpty]: Start isEmpty. Operand 1356 states and 1954 transitions. [2022-02-10 03:29:30,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-02-10 03:29:30,125 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:29:30,125 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:29:30,143 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2022-02-10 03:29:30,339 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 [2022-02-10 03:29:30,339 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:29:30,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:29:30,340 INFO L85 PathProgramCache]: Analyzing trace with hash 948648736, now seen corresponding path program 45 times [2022-02-10 03:29:30,340 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:29:30,340 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998939097] [2022-02-10 03:29:30,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:29:30,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:29:30,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:29:30,597 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:29:30,597 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:29:30,597 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998939097] [2022-02-10 03:29:30,597 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998939097] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:29:30,597 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415062884] [2022-02-10 03:29:30,597 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:29:30,597 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:29:30,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:29:30,598 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:29:30,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-02-10 03:29:30,654 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-02-10 03:29:30,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:29:30,655 WARN L261 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 49 conjunts are in the unsatisfiable core [2022-02-10 03:29:30,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:29:31,238 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:31,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:31,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:31,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:31,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:31,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:31,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:31,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:31,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:31,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:31,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:31,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:31,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:31,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:31,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:31,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:31,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:31,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:31,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:31,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:31,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:31,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:31,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:31,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:31,251 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:31,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:31,252 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:31,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:31,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:31,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:31,254 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:31,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:31,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:31,255 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:31,256 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 [2022-02-10 03:29:31,276 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:29:31,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:29:32,158 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-02-10 03:29:32,158 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 [2022-02-10 03:29:33,055 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:29:33,056 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415062884] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:29:33,056 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:29:33,056 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 38 [2022-02-10 03:29:33,056 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141877214] [2022-02-10 03:29:33,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:29:33,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-10 03:29:33,057 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:29:33,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-10 03:29:33,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=1241, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 03:29:33,057 INFO L87 Difference]: Start difference. First operand 1356 states and 1954 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) [2022-02-10 03:29:34,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:29:34,211 INFO L93 Difference]: Finished difference Result 2162 states and 3071 transitions. [2022-02-10 03:29:34,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-02-10 03:29:34,212 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 [2022-02-10 03:29:34,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:29:34,214 INFO L225 Difference]: With dead ends: 2162 [2022-02-10 03:29:34,214 INFO L226 Difference]: Without dead ends: 2144 [2022-02-10 03:29:34,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1205 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=658, Invalid=3764, Unknown=0, NotChecked=0, Total=4422 [2022-02-10 03:29:34,215 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 177 mSDsluCounter, 1160 mSDsCounter, 0 mSdLazyCounter, 895 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 1109 SdHoareTripleChecker+Invalid, 1205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 254 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 03:29:34,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 1109 Invalid, 1205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 895 Invalid, 0 Unknown, 254 Unchecked, 0.4s Time] [2022-02-10 03:29:34,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2144 states. [2022-02-10 03:29:34,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2144 to 1427. [2022-02-10 03:29:34,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1427 states, 1426 states have (on average 1.443899018232819) internal successors, (2059), 1426 states have internal predecessors, (2059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:29:34,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1427 states to 1427 states and 2059 transitions. [2022-02-10 03:29:34,236 INFO L78 Accepts]: Start accepts. Automaton has 1427 states and 2059 transitions. Word has length 35 [2022-02-10 03:29:34,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:29:34,236 INFO L470 AbstractCegarLoop]: Abstraction has 1427 states and 2059 transitions. [2022-02-10 03:29:34,236 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) [2022-02-10 03:29:34,236 INFO L276 IsEmpty]: Start isEmpty. Operand 1427 states and 2059 transitions. [2022-02-10 03:29:34,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-02-10 03:29:34,237 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:29:34,238 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:29:34,254 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2022-02-10 03:29:34,451 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 [2022-02-10 03:29:34,452 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:29:34,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:29:34,452 INFO L85 PathProgramCache]: Analyzing trace with hash -846138288, now seen corresponding path program 46 times [2022-02-10 03:29:34,452 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:29:34,452 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987826835] [2022-02-10 03:29:34,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:29:34,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:29:34,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:29:34,699 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 03:29:34,699 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:29:34,699 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987826835] [2022-02-10 03:29:34,699 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987826835] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:29:34,699 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229299109] [2022-02-10 03:29:34,699 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:29:34,699 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:29:34,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:29:34,700 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:29:34,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-02-10 03:29:34,723 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:29:34,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:29:34,724 WARN L261 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 49 conjunts are in the unsatisfiable core [2022-02-10 03:29:34,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:29:35,272 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:35,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:35,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:35,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:35,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:35,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:35,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:35,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:35,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:35,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:35,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:35,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:35,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:35,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:35,279 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:35,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:35,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:35,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:35,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:35,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:35,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:35,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:35,283 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:35,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:35,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:35,285 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:35,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:35,286 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 [2022-02-10 03:29:35,304 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 3 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:29:35,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:29:36,193 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-02-10 03:29:36,194 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 [2022-02-10 03:29:37,238 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 3 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:29:37,238 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229299109] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:29:37,238 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:29:37,238 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 36 [2022-02-10 03:29:37,238 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839248933] [2022-02-10 03:29:37,238 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:29:37,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-10 03:29:37,239 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:29:37,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-10 03:29:37,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=1102, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 03:29:37,239 INFO L87 Difference]: Start difference. First operand 1427 states and 2059 transitions. Second operand has 37 states, 37 states have (on average 2.27027027027027) internal successors, (84), 36 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) [2022-02-10 03:29:38,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:29:38,989 INFO L93 Difference]: Finished difference Result 3380 states and 4689 transitions. [2022-02-10 03:29:38,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-02-10 03:29:38,989 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.27027027027027) internal successors, (84), 36 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 35 [2022-02-10 03:29:38,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:29:38,992 INFO L225 Difference]: With dead ends: 3380 [2022-02-10 03:29:38,992 INFO L226 Difference]: Without dead ends: 3010 [2022-02-10 03:29:38,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 45 SyntacticMatches, 3 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1484 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=815, Invalid=4587, Unknown=0, NotChecked=0, Total=5402 [2022-02-10 03:29:38,993 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 560 mSDsluCounter, 1822 mSDsCounter, 0 mSdLazyCounter, 1104 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 560 SdHoareTripleChecker+Valid, 1258 SdHoareTripleChecker+Invalid, 1548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 336 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 03:29:38,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [560 Valid, 1258 Invalid, 1548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1104 Invalid, 0 Unknown, 336 Unchecked, 0.6s Time] [2022-02-10 03:29:38,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3010 states. [2022-02-10 03:29:39,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3010 to 1824. [2022-02-10 03:29:39,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1824 states, 1823 states have (on average 1.442128359846407) internal successors, (2629), 1823 states have internal predecessors, (2629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:29:39,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1824 states to 1824 states and 2629 transitions. [2022-02-10 03:29:39,017 INFO L78 Accepts]: Start accepts. Automaton has 1824 states and 2629 transitions. Word has length 35 [2022-02-10 03:29:39,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:29:39,017 INFO L470 AbstractCegarLoop]: Abstraction has 1824 states and 2629 transitions. [2022-02-10 03:29:39,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.27027027027027) internal successors, (84), 36 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) [2022-02-10 03:29:39,017 INFO L276 IsEmpty]: Start isEmpty. Operand 1824 states and 2629 transitions. [2022-02-10 03:29:39,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-02-10 03:29:39,019 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:29:39,019 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:29:39,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-02-10 03:29:39,231 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 [2022-02-10 03:29:39,231 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:29:39,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:29:39,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1948673920, now seen corresponding path program 47 times [2022-02-10 03:29:39,232 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:29:39,232 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575178595] [2022-02-10 03:29:39,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:29:39,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:29:39,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:29:39,472 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:29:39,472 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:29:39,472 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575178595] [2022-02-10 03:29:39,472 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575178595] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:29:39,472 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576079942] [2022-02-10 03:29:39,472 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 03:29:39,472 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:29:39,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:29:39,473 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:29:39,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-02-10 03:29:39,497 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-10 03:29:39,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:29:39,498 WARN L261 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 49 conjunts are in the unsatisfiable core [2022-02-10 03:29:39,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:29:40,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:40,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:40,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:40,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:40,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:40,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:40,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:40,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:40,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:40,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:40,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:40,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:40,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:40,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:40,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:40,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:40,081 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:40,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:40,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:40,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:40,082 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:40,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:40,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:40,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:40,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:40,085 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:40,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:40,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:40,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:40,087 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:40,088 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 [2022-02-10 03:29:40,106 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:29:40,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:29:40,984 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-02-10 03:29:40,984 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 [2022-02-10 03:29:41,667 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 3 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:29:41,667 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576079942] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:29:41,667 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:29:41,667 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 37 [2022-02-10 03:29:41,667 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25653300] [2022-02-10 03:29:41,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:29:41,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-10 03:29:41,667 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:29:41,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-10 03:29:41,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=1175, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 03:29:41,668 INFO L87 Difference]: Start difference. First operand 1824 states and 2629 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) [2022-02-10 03:29:43,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:29:43,144 INFO L93 Difference]: Finished difference Result 3094 states and 4391 transitions. [2022-02-10 03:29:43,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-02-10 03:29:43,145 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 [2022-02-10 03:29:43,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:29:43,147 INFO L225 Difference]: With dead ends: 3094 [2022-02-10 03:29:43,147 INFO L226 Difference]: Without dead ends: 3030 [2022-02-10 03:29:43,147 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 [2022-02-10 03:29:43,148 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 244 mSDsluCounter, 967 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 189 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 03:29:43,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [244 Valid, 874 Invalid, 993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 719 Invalid, 0 Unknown, 189 Unchecked, 0.4s Time] [2022-02-10 03:29:43,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3030 states. [2022-02-10 03:29:43,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3030 to 1525. [2022-02-10 03:29:43,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1525 states, 1524 states have (on average 1.4416010498687664) internal successors, (2197), 1524 states have internal predecessors, (2197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:29:43,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 2197 transitions. [2022-02-10 03:29:43,164 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 2197 transitions. Word has length 35 [2022-02-10 03:29:43,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:29:43,164 INFO L470 AbstractCegarLoop]: Abstraction has 1525 states and 2197 transitions. [2022-02-10 03:29:43,165 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) [2022-02-10 03:29:43,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 2197 transitions. [2022-02-10 03:29:43,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-02-10 03:29:43,166 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:29:43,166 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:29:43,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-02-10 03:29:43,366 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 [2022-02-10 03:29:43,366 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:29:43,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:29:43,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1606460848, now seen corresponding path program 48 times [2022-02-10 03:29:43,367 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:29:43,367 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777240572] [2022-02-10 03:29:43,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:29:43,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:29:43,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:29:43,646 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:29:43,646 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:29:43,646 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777240572] [2022-02-10 03:29:43,646 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777240572] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:29:43,646 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591562676] [2022-02-10 03:29:43,646 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 03:29:43,647 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:29:43,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:29:43,648 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:29:43,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-02-10 03:29:43,672 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-02-10 03:29:43,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:29:43,673 WARN L261 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 49 conjunts are in the unsatisfiable core [2022-02-10 03:29:43,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:29:44,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:44,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:44,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:44,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:44,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:44,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:44,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:44,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:44,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:44,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:44,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:44,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:44,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:44,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:44,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:44,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:44,242 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:44,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:44,243 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:44,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:44,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:44,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:44,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:44,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:44,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:44,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:44,247 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:44,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:44,248 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:44,249 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 [2022-02-10 03:29:44,266 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:29:44,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:29:45,127 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-02-10 03:29:45,127 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 [2022-02-10 03:29:46,129 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 6 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:29:46,129 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591562676] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:29:46,129 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:29:46,129 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 37 [2022-02-10 03:29:46,129 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629137755] [2022-02-10 03:29:46,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:29:46,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-10 03:29:46,130 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:29:46,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-10 03:29:46,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=1174, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 03:29:46,130 INFO L87 Difference]: Start difference. First operand 1525 states and 2197 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) [2022-02-10 03:29:47,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:29:47,512 INFO L93 Difference]: Finished difference Result 2363 states and 3348 transitions. [2022-02-10 03:29:47,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-02-10 03:29:47,513 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 [2022-02-10 03:29:47,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:29:47,515 INFO L225 Difference]: With dead ends: 2363 [2022-02-10 03:29:47,515 INFO L226 Difference]: Without dead ends: 2345 [2022-02-10 03:29:47,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1368 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=827, Invalid=4143, Unknown=0, NotChecked=0, Total=4970 [2022-02-10 03:29:47,516 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 204 mSDsluCounter, 969 mSDsCounter, 0 mSdLazyCounter, 712 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 932 SdHoareTripleChecker+Invalid, 1109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 324 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 03:29:47,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 932 Invalid, 1109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 712 Invalid, 0 Unknown, 324 Unchecked, 0.4s Time] [2022-02-10 03:29:47,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2345 states. [2022-02-10 03:29:47,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2345 to 1576. [2022-02-10 03:29:47,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1576 states, 1575 states have (on average 1.4393650793650794) internal successors, (2267), 1575 states have internal predecessors, (2267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:29:47,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 2267 transitions. [2022-02-10 03:29:47,533 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 2267 transitions. Word has length 35 [2022-02-10 03:29:47,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:29:47,533 INFO L470 AbstractCegarLoop]: Abstraction has 1576 states and 2267 transitions. [2022-02-10 03:29:47,533 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) [2022-02-10 03:29:47,533 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 2267 transitions. [2022-02-10 03:29:47,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-02-10 03:29:47,534 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:29:47,534 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:29:47,550 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2022-02-10 03:29:47,743 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 [2022-02-10 03:29:47,743 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:29:47,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:29:47,743 INFO L85 PathProgramCache]: Analyzing trace with hash 434694368, now seen corresponding path program 49 times [2022-02-10 03:29:47,743 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:29:47,743 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298088042] [2022-02-10 03:29:47,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:29:47,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:29:47,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:29:47,983 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:29:47,983 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:29:47,983 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298088042] [2022-02-10 03:29:47,983 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298088042] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:29:47,983 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702653067] [2022-02-10 03:29:47,983 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 03:29:47,984 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:29:47,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:29:47,984 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:29:47,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-02-10 03:29:48,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:29:48,014 WARN L261 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 49 conjunts are in the unsatisfiable core [2022-02-10 03:29:48,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:29:48,553 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:48,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:48,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:48,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:48,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:48,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:48,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:48,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:48,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:48,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:48,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:48,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:48,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:48,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:48,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:48,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:48,561 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:48,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:48,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:48,562 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:48,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:48,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:48,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:48,564 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 [2022-02-10 03:29:48,582 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 1 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:29:48,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:29:49,396 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-02-10 03:29:49,396 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 [2022-02-10 03:29:50,289 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:29:50,289 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702653067] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:29:50,289 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:29:50,289 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 15] total 33 [2022-02-10 03:29:50,290 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056458150] [2022-02-10 03:29:50,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:29:50,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-10 03:29:50,295 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:29:50,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-10 03:29:50,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=908, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 03:29:50,296 INFO L87 Difference]: Start difference. First operand 1576 states and 2267 transitions. Second operand has 34 states, 34 states have (on average 2.411764705882353) internal successors, (82), 33 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:29:51,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:29:51,307 INFO L93 Difference]: Finished difference Result 2328 states and 3296 transitions. [2022-02-10 03:29:51,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-02-10 03:29:51,307 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.411764705882353) internal successors, (82), 33 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have 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 [2022-02-10 03:29:51,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:29:51,309 INFO L225 Difference]: With dead ends: 2328 [2022-02-10 03:29:51,310 INFO L226 Difference]: Without dead ends: 2310 [2022-02-10 03:29:51,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 45 SyntacticMatches, 6 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 815 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=468, Invalid=2502, Unknown=0, NotChecked=0, Total=2970 [2022-02-10 03:29:51,310 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 163 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:29:51,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 636 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 557 Invalid, 0 Unknown, 31 Unchecked, 0.3s Time] [2022-02-10 03:29:51,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2310 states. [2022-02-10 03:29:51,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2310 to 1655. [2022-02-10 03:29:51,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1655 states, 1654 states have (on average 1.4389359129383312) internal successors, (2380), 1654 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:29:51,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1655 states to 1655 states and 2380 transitions. [2022-02-10 03:29:51,327 INFO L78 Accepts]: Start accepts. Automaton has 1655 states and 2380 transitions. Word has length 35 [2022-02-10 03:29:51,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:29:51,327 INFO L470 AbstractCegarLoop]: Abstraction has 1655 states and 2380 transitions. [2022-02-10 03:29:51,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.411764705882353) internal successors, (82), 33 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:29:51,327 INFO L276 IsEmpty]: Start isEmpty. Operand 1655 states and 2380 transitions. [2022-02-10 03:29:51,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-02-10 03:29:51,329 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:29:51,329 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:29:51,344 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2022-02-10 03:29:51,529 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 [2022-02-10 03:29:51,529 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:29:51,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:29:51,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1135031520, now seen corresponding path program 50 times [2022-02-10 03:29:51,530 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:29:51,530 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304448688] [2022-02-10 03:29:51,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:29:51,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:29:51,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:29:51,777 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:29:51,778 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:29:51,778 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304448688] [2022-02-10 03:29:51,778 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304448688] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:29:51,778 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559778229] [2022-02-10 03:29:51,778 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:29:51,778 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:29:51,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:29:51,779 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:29:51,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-02-10 03:29:51,805 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:29:51,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:29:51,806 WARN L261 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 49 conjunts are in the unsatisfiable core [2022-02-10 03:29:51,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:29:52,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:52,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:52,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:52,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:52,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:52,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:52,359 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:52,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:52,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:52,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:52,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:52,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:52,362 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:52,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:52,363 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:52,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:52,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:52,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:52,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:52,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:52,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:52,368 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 [2022-02-10 03:29:52,385 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:29:52,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:29:53,243 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-02-10 03:29:53,243 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 [2022-02-10 03:29:54,130 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 3 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:29:54,131 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559778229] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:29:54,131 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:29:54,131 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 36 [2022-02-10 03:29:54,131 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588651555] [2022-02-10 03:29:54,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:29:54,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-10 03:29:54,131 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:29:54,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-10 03:29:54,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=1106, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 03:29:54,132 INFO L87 Difference]: Start difference. First operand 1655 states and 2380 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) [2022-02-10 03:29:55,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:29:55,150 INFO L93 Difference]: Finished difference Result 2646 states and 3751 transitions. [2022-02-10 03:29:55,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-02-10 03:29:55,150 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 [2022-02-10 03:29:55,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:29:55,153 INFO L225 Difference]: With dead ends: 2646 [2022-02-10 03:29:55,153 INFO L226 Difference]: Without dead ends: 2628 [2022-02-10 03:29:55,153 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 [2022-02-10 03:29:55,167 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 188 mSDsluCounter, 798 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 783 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 281 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:29:55,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [188 Valid, 783 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 553 Invalid, 0 Unknown, 281 Unchecked, 0.3s Time] [2022-02-10 03:29:55,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2628 states. [2022-02-10 03:29:55,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2628 to 1686. [2022-02-10 03:29:55,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1686 states, 1685 states have (on average 1.4385756676557864) internal successors, (2424), 1685 states have internal predecessors, (2424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:29:55,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1686 states to 1686 states and 2424 transitions. [2022-02-10 03:29:55,187 INFO L78 Accepts]: Start accepts. Automaton has 1686 states and 2424 transitions. Word has length 35 [2022-02-10 03:29:55,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:29:55,187 INFO L470 AbstractCegarLoop]: Abstraction has 1686 states and 2424 transitions. [2022-02-10 03:29:55,187 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) [2022-02-10 03:29:55,187 INFO L276 IsEmpty]: Start isEmpty. Operand 1686 states and 2424 transitions. [2022-02-10 03:29:55,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-02-10 03:29:55,189 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:29:55,189 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:29:55,227 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2022-02-10 03:29:55,395 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 [2022-02-10 03:29:55,395 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:29:55,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:29:55,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1480402416, now seen corresponding path program 51 times [2022-02-10 03:29:55,396 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:29:55,396 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597903950] [2022-02-10 03:29:55,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:29:55,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:29:55,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:29:55,635 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:29:55,636 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:29:55,636 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597903950] [2022-02-10 03:29:55,636 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597903950] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:29:55,636 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915785328] [2022-02-10 03:29:55,636 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:29:55,636 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:29:55,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:29:55,637 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:29:55,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-02-10 03:29:55,660 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-02-10 03:29:55,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:29:55,661 WARN L261 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 49 conjunts are in the unsatisfiable core [2022-02-10 03:29:55,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:29:56,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:56,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:56,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:56,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:56,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:56,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:56,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:56,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:56,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:56,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:56,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:56,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:56,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:56,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:56,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:56,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:56,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:56,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:56,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:56,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:56,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:56,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:56,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:56,210 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:56,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:56,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:56,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:56,212 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:56,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:29:56,213 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:29:56,213 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 [2022-02-10 03:29:56,231 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:29:56,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:29:57,085 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-02-10 03:29:57,086 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 [2022-02-10 03:29:58,019 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 3 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:29:58,019 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915785328] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:29:58,019 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:29:58,019 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 36 [2022-02-10 03:29:58,020 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062580831] [2022-02-10 03:29:58,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:29:58,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-10 03:29:58,020 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:29:58,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-10 03:29:58,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=1110, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 03:29:58,020 INFO L87 Difference]: Start difference. First operand 1686 states and 2424 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) [2022-02-10 03:30:00,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:30:00,174 INFO L93 Difference]: Finished difference Result 3900 states and 5400 transitions. [2022-02-10 03:30:00,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-02-10 03:30:00,174 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 [2022-02-10 03:30:00,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:30:00,178 INFO L225 Difference]: With dead ends: 3900 [2022-02-10 03:30:00,178 INFO L226 Difference]: Without dead ends: 3588 [2022-02-10 03:30:00,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 44 SyntacticMatches, 4 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1619 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=862, Invalid=4838, Unknown=0, NotChecked=0, Total=5700 [2022-02-10 03:30:00,179 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 431 mSDsluCounter, 1936 mSDsCounter, 0 mSdLazyCounter, 1445 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 1369 SdHoareTripleChecker+Invalid, 1611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 51 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 03:30:00,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [431 Valid, 1369 Invalid, 1611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1445 Invalid, 0 Unknown, 51 Unchecked, 0.7s Time] [2022-02-10 03:30:00,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3588 states. [2022-02-10 03:30:00,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3588 to 2076. [2022-02-10 03:30:00,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2076 states, 2075 states have (on average 1.446265060240964) internal successors, (3001), 2075 states have internal predecessors, (3001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:30:00,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2076 states to 2076 states and 3001 transitions. [2022-02-10 03:30:00,217 INFO L78 Accepts]: Start accepts. Automaton has 2076 states and 3001 transitions. Word has length 35 [2022-02-10 03:30:00,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:30:00,217 INFO L470 AbstractCegarLoop]: Abstraction has 2076 states and 3001 transitions. [2022-02-10 03:30:00,217 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) [2022-02-10 03:30:00,217 INFO L276 IsEmpty]: Start isEmpty. Operand 2076 states and 3001 transitions. [2022-02-10 03:30:00,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-02-10 03:30:00,219 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:30:00,219 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:30:00,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2022-02-10 03:30:00,431 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 [2022-02-10 03:30:00,431 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:30:00,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:30:00,432 INFO L85 PathProgramCache]: Analyzing trace with hash -472545984, now seen corresponding path program 52 times [2022-02-10 03:30:00,432 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:30:00,432 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394580279] [2022-02-10 03:30:00,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:30:00,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:30:00,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:30:00,692 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 03:30:00,692 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:30:00,693 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394580279] [2022-02-10 03:30:00,693 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394580279] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:30:00,693 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071193782] [2022-02-10 03:30:00,693 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:30:00,693 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:30:00,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:30:00,694 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:30:00,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-02-10 03:30:00,715 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:30:00,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:30:00,716 WARN L261 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 49 conjunts are in the unsatisfiable core [2022-02-10 03:30:00,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:30:01,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:01,231 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:01,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:01,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:01,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:01,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:01,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:01,234 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:01,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:01,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:01,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:01,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:01,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:01,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:01,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:01,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:01,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:01,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:01,240 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 [2022-02-10 03:30:01,260 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 3 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:30:01,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:30:02,120 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-02-10 03:30:02,120 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 [2022-02-10 03:30:02,791 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 3 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:30:02,792 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071193782] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:30:02,792 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:30:02,792 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 34 [2022-02-10 03:30:02,792 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736986327] [2022-02-10 03:30:02,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:30:02,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-10 03:30:02,792 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:30:02,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-10 03:30:02,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=981, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 03:30:02,793 INFO L87 Difference]: Start difference. First operand 2076 states and 3001 transitions. Second operand has 35 states, 35 states have (on average 2.2285714285714286) internal successors, (78), 34 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) [2022-02-10 03:30:04,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:30:04,674 INFO L93 Difference]: Finished difference Result 3831 states and 5394 transitions. [2022-02-10 03:30:04,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-02-10 03:30:04,675 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.2285714285714286) internal successors, (78), 34 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 [2022-02-10 03:30:04,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:30:04,679 INFO L225 Difference]: With dead ends: 3831 [2022-02-10 03:30:04,679 INFO L226 Difference]: Without dead ends: 3449 [2022-02-10 03:30:04,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 44 SyntacticMatches, 6 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1667 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=970, Invalid=4730, Unknown=0, NotChecked=0, Total=5700 [2022-02-10 03:30:04,680 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 471 mSDsluCounter, 2061 mSDsCounter, 0 mSdLazyCounter, 1283 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 1430 SdHoareTripleChecker+Invalid, 1623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 252 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 03:30:04,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [471 Valid, 1430 Invalid, 1623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1283 Invalid, 0 Unknown, 252 Unchecked, 0.6s Time] [2022-02-10 03:30:04,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3449 states. [2022-02-10 03:30:04,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3449 to 2146. [2022-02-10 03:30:04,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2146 states, 2145 states have (on average 1.4466200466200467) internal successors, (3103), 2145 states have internal predecessors, (3103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:30:04,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2146 states to 2146 states and 3103 transitions. [2022-02-10 03:30:04,703 INFO L78 Accepts]: Start accepts. Automaton has 2146 states and 3103 transitions. Word has length 35 [2022-02-10 03:30:04,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:30:04,704 INFO L470 AbstractCegarLoop]: Abstraction has 2146 states and 3103 transitions. [2022-02-10 03:30:04,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.2285714285714286) internal successors, (78), 34 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) [2022-02-10 03:30:04,704 INFO L276 IsEmpty]: Start isEmpty. Operand 2146 states and 3103 transitions. [2022-02-10 03:30:04,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-02-10 03:30:04,705 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:30:04,706 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:30:04,721 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2022-02-10 03:30:04,906 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 [2022-02-10 03:30:04,906 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:30:04,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:30:04,906 INFO L85 PathProgramCache]: Analyzing trace with hash 267286544, now seen corresponding path program 53 times [2022-02-10 03:30:04,906 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:30:04,906 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168222364] [2022-02-10 03:30:04,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:30:04,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:30:04,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:30:05,208 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:30:05,209 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:30:05,209 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168222364] [2022-02-10 03:30:05,209 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168222364] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:30:05,209 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840443622] [2022-02-10 03:30:05,209 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 03:30:05,209 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:30:05,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:30:05,210 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:30:05,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-02-10 03:30:05,234 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-10 03:30:05,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:30:05,235 WARN L261 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 49 conjunts are in the unsatisfiable core [2022-02-10 03:30:05,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:30:05,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:05,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:05,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:05,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:05,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:05,787 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:05,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:05,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:05,788 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:05,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:05,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:05,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:05,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:05,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:05,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:05,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:05,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:05,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:05,797 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 [2022-02-10 03:30:05,815 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:30:05,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:30:06,716 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-02-10 03:30:06,717 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 [2022-02-10 03:30:07,636 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 3 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:30:07,637 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840443622] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:30:07,637 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:30:07,637 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 35 [2022-02-10 03:30:07,637 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275536900] [2022-02-10 03:30:07,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:30:07,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-02-10 03:30:07,637 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:30:07,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-02-10 03:30:07,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=1044, Unknown=0, NotChecked=0, Total=1260 [2022-02-10 03:30:07,638 INFO L87 Difference]: Start difference. First operand 2146 states and 3103 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) [2022-02-10 03:30:08,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:30:08,829 INFO L93 Difference]: Finished difference Result 3267 states and 4673 transitions. [2022-02-10 03:30:08,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-02-10 03:30:08,830 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 [2022-02-10 03:30:08,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:30:08,834 INFO L225 Difference]: With dead ends: 3267 [2022-02-10 03:30:08,834 INFO L226 Difference]: Without dead ends: 3240 [2022-02-10 03:30:08,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 44 SyntacticMatches, 5 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1122 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=717, Invalid=3573, Unknown=0, NotChecked=0, Total=4290 [2022-02-10 03:30:08,835 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 244 mSDsluCounter, 954 mSDsCounter, 0 mSdLazyCounter, 672 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 876 SdHoareTripleChecker+Invalid, 967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 226 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:30:08,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [244 Valid, 876 Invalid, 967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 672 Invalid, 0 Unknown, 226 Unchecked, 0.3s Time] [2022-02-10 03:30:08,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3240 states. [2022-02-10 03:30:08,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3240 to 2277. [2022-02-10 03:30:08,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2277 states, 2276 states have (on average 1.4494727592267136) internal successors, (3299), 2276 states have internal predecessors, (3299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:30:08,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2277 states to 2277 states and 3299 transitions. [2022-02-10 03:30:08,860 INFO L78 Accepts]: Start accepts. Automaton has 2277 states and 3299 transitions. Word has length 35 [2022-02-10 03:30:08,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:30:08,860 INFO L470 AbstractCegarLoop]: Abstraction has 2277 states and 3299 transitions. [2022-02-10 03:30:08,860 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) [2022-02-10 03:30:08,860 INFO L276 IsEmpty]: Start isEmpty. Operand 2277 states and 3299 transitions. [2022-02-10 03:30:08,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-02-10 03:30:08,868 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:30:08,868 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:30:08,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2022-02-10 03:30:09,071 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 [2022-02-10 03:30:09,071 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:30:09,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:30:09,072 INFO L85 PathProgramCache]: Analyzing trace with hash 2076088002, now seen corresponding path program 54 times [2022-02-10 03:30:09,072 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:30:09,072 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889143269] [2022-02-10 03:30:09,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:30:09,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:30:09,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:30:09,118 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 41 proven. 20 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 03:30:09,118 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:30:09,118 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889143269] [2022-02-10 03:30:09,118 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889143269] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:30:09,118 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596525345] [2022-02-10 03:30:09,118 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 03:30:09,118 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:30:09,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:30:09,119 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:30:09,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-02-10 03:30:09,141 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-02-10 03:30:09,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:30:09,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 03:30:09,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:30:09,199 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 41 proven. 20 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 03:30:09,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:30:09,266 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 41 proven. 20 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 03:30:09,267 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596525345] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:30:09,267 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:30:09,267 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 8 [2022-02-10 03:30:09,267 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841701998] [2022-02-10 03:30:09,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:30:09,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-10 03:30:09,267 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:30:09,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-10 03:30:09,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-02-10 03:30:09,268 INFO L87 Difference]: Start difference. First operand 2277 states and 3299 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:30:09,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:30:09,310 INFO L93 Difference]: Finished difference Result 3082 states and 4395 transitions. [2022-02-10 03:30:09,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 03:30:09,310 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 8 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 35 [2022-02-10 03:30:09,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:30:09,313 INFO L225 Difference]: With dead ends: 3082 [2022-02-10 03:30:09,313 INFO L226 Difference]: Without dead ends: 3082 [2022-02-10 03:30:09,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-02-10 03:30:09,314 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 82 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 03:30:09,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 68 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 03:30:09,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3082 states. [2022-02-10 03:30:09,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3082 to 2710. [2022-02-10 03:30:09,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2710 states, 2709 states have (on average 1.4647471391657438) internal successors, (3968), 2709 states have internal predecessors, (3968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:30:09,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2710 states to 2710 states and 3968 transitions. [2022-02-10 03:30:09,346 INFO L78 Accepts]: Start accepts. Automaton has 2710 states and 3968 transitions. Word has length 35 [2022-02-10 03:30:09,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:30:09,346 INFO L470 AbstractCegarLoop]: Abstraction has 2710 states and 3968 transitions. [2022-02-10 03:30:09,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:30:09,346 INFO L276 IsEmpty]: Start isEmpty. Operand 2710 states and 3968 transitions. [2022-02-10 03:30:09,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-02-10 03:30:09,349 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:30:09,349 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:30:09,368 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2022-02-10 03:30:09,550 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 [2022-02-10 03:30:09,551 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:30:09,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:30:09,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1057803616, now seen corresponding path program 55 times [2022-02-10 03:30:09,551 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:30:09,551 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968595304] [2022-02-10 03:30:09,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:30:09,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:30:09,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:30:09,826 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:30:09,826 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:30:09,826 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968595304] [2022-02-10 03:30:09,826 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968595304] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:30:09,826 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6226770] [2022-02-10 03:30:09,826 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 03:30:09,826 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:30:09,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:30:09,827 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:30:09,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-02-10 03:30:09,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:30:09,851 WARN L261 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 49 conjunts are in the unsatisfiable core [2022-02-10 03:30:09,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:30:10,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:10,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:10,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:10,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:10,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:10,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:10,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:10,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:10,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:10,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:10,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:10,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:10,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:10,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:10,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:10,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:10,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:10,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:10,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:10,405 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:10,406 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 [2022-02-10 03:30:10,424 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:30:10,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:30:11,309 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-02-10 03:30:11,310 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 [2022-02-10 03:30:12,376 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 6 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:30:12,376 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6226770] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:30:12,376 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:30:12,377 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 15] total 32 [2022-02-10 03:30:12,377 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577055101] [2022-02-10 03:30:12,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:30:12,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-10 03:30:12,377 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:30:12,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-10 03:30:12,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=859, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 03:30:12,377 INFO L87 Difference]: Start difference. First operand 2710 states and 3968 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) [2022-02-10 03:30:13,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:30:13,530 INFO L93 Difference]: Finished difference Result 4010 states and 5700 transitions. [2022-02-10 03:30:13,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-02-10 03:30:13,530 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 35 [2022-02-10 03:30:13,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:30:13,535 INFO L225 Difference]: With dead ends: 4010 [2022-02-10 03:30:13,535 INFO L226 Difference]: Without dead ends: 3813 [2022-02-10 03:30:13,535 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 48 SyntacticMatches, 8 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 656 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=467, Invalid=2185, Unknown=0, NotChecked=0, Total=2652 [2022-02-10 03:30:13,536 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 396 mSDsluCounter, 1417 mSDsCounter, 0 mSdLazyCounter, 1060 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 1035 SdHoareTripleChecker+Invalid, 1178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 03:30:13,536 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [396 Valid, 1035 Invalid, 1178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1060 Invalid, 0 Unknown, 33 Unchecked, 0.5s Time] [2022-02-10 03:30:13,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3813 states. [2022-02-10 03:30:13,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3813 to 2812. [2022-02-10 03:30:13,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2812 states, 2811 states have (on average 1.463891853432942) internal successors, (4115), 2811 states have internal predecessors, (4115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:30:13,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2812 states to 2812 states and 4115 transitions. [2022-02-10 03:30:13,570 INFO L78 Accepts]: Start accepts. Automaton has 2812 states and 4115 transitions. Word has length 35 [2022-02-10 03:30:13,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:30:13,570 INFO L470 AbstractCegarLoop]: Abstraction has 2812 states and 4115 transitions. [2022-02-10 03:30:13,570 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) [2022-02-10 03:30:13,570 INFO L276 IsEmpty]: Start isEmpty. Operand 2812 states and 4115 transitions. [2022-02-10 03:30:13,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-02-10 03:30:13,572 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:30:13,572 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:30:13,588 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2022-02-10 03:30:13,773 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 [2022-02-10 03:30:13,773 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:30:13,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:30:13,773 INFO L85 PathProgramCache]: Analyzing trace with hash 402856096, now seen corresponding path program 56 times [2022-02-10 03:30:13,773 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:30:13,773 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411011190] [2022-02-10 03:30:13,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:30:13,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:30:13,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:30:14,033 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:30:14,033 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:30:14,033 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411011190] [2022-02-10 03:30:14,033 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411011190] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:30:14,033 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161637389] [2022-02-10 03:30:14,033 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:30:14,033 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:30:14,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:30:14,034 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:30:14,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-02-10 03:30:14,056 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:30:14,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:30:14,057 WARN L261 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 49 conjunts are in the unsatisfiable core [2022-02-10 03:30:14,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:30:14,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:14,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:14,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:14,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:14,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:14,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:14,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:14,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:14,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:14,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:14,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:14,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:14,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:14,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:14,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:14,637 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:14,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:14,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:14,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:14,640 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 [2022-02-10 03:30:14,658 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:30:14,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:30:15,534 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-02-10 03:30:15,535 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 [2022-02-10 03:30:16,343 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 6 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:30:16,344 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161637389] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:30:16,344 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:30:16,344 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 33 [2022-02-10 03:30:16,344 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463501526] [2022-02-10 03:30:16,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:30:16,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-10 03:30:16,344 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:30:16,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-10 03:30:16,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=920, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 03:30:16,345 INFO L87 Difference]: Start difference. First operand 2812 states and 4115 transitions. Second operand has 34 states, 34 states have (on average 2.264705882352941) internal successors, (77), 33 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) [2022-02-10 03:30:17,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:30:17,862 INFO L93 Difference]: Finished difference Result 4354 states and 6236 transitions. [2022-02-10 03:30:17,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-02-10 03:30:17,862 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.264705882352941) internal successors, (77), 33 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 [2022-02-10 03:30:17,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:30:17,866 INFO L225 Difference]: With dead ends: 4354 [2022-02-10 03:30:17,866 INFO L226 Difference]: Without dead ends: 4243 [2022-02-10 03:30:17,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 44 SyntacticMatches, 7 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1169 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=727, Invalid=3965, Unknown=0, NotChecked=0, Total=4692 [2022-02-10 03:30:17,866 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 266 mSDsluCounter, 1261 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 1050 SdHoareTripleChecker+Invalid, 1207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 257 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 03:30:17,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [266 Valid, 1050 Invalid, 1207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 865 Invalid, 0 Unknown, 257 Unchecked, 0.5s Time] [2022-02-10 03:30:17,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4243 states. [2022-02-10 03:30:17,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4243 to 2831. [2022-02-10 03:30:17,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2831 states, 2830 states have (on average 1.4643109540636043) internal successors, (4144), 2830 states have internal predecessors, (4144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:30:17,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2831 states to 2831 states and 4144 transitions. [2022-02-10 03:30:17,896 INFO L78 Accepts]: Start accepts. Automaton has 2831 states and 4144 transitions. Word has length 35 [2022-02-10 03:30:17,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:30:17,896 INFO L470 AbstractCegarLoop]: Abstraction has 2831 states and 4144 transitions. [2022-02-10 03:30:17,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.264705882352941) internal successors, (77), 33 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) [2022-02-10 03:30:17,896 INFO L276 IsEmpty]: Start isEmpty. Operand 2831 states and 4144 transitions. [2022-02-10 03:30:17,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-02-10 03:30:17,898 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:30:17,898 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:30:17,913 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2022-02-10 03:30:18,098 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 [2022-02-10 03:30:18,098 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:30:18,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:30:18,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1097298992, now seen corresponding path program 57 times [2022-02-10 03:30:18,099 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:30:18,099 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964380113] [2022-02-10 03:30:18,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:30:18,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:30:18,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:30:18,375 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 03:30:18,375 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:30:18,375 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964380113] [2022-02-10 03:30:18,375 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964380113] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:30:18,375 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880898092] [2022-02-10 03:30:18,376 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:30:18,376 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:30:18,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:30:18,377 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:30:18,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-02-10 03:30:18,405 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-02-10 03:30:18,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:30:18,407 WARN L261 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 49 conjunts are in the unsatisfiable core [2022-02-10 03:30:18,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:30:18,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:18,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:18,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:18,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:18,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:18,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:18,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:18,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:18,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:18,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:18,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:18,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:18,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:18,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:18,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:18,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:18,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:18,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:18,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:18,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:18,944 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:18,944 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 [2022-02-10 03:30:18,963 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 3 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:30:18,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:30:19,834 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-02-10 03:30:19,834 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 [2022-02-10 03:30:20,721 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 6 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:30:20,721 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880898092] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:30:20,721 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:30:20,721 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 33 [2022-02-10 03:30:20,721 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93594903] [2022-02-10 03:30:20,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:30:20,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-10 03:30:20,721 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:30:20,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-10 03:30:20,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=920, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 03:30:20,722 INFO L87 Difference]: Start difference. First operand 2831 states and 4144 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) [2022-02-10 03:30:22,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:30:22,537 INFO L93 Difference]: Finished difference Result 4541 states and 6531 transitions. [2022-02-10 03:30:22,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-02-10 03:30:22,538 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 [2022-02-10 03:30:22,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:30:22,543 INFO L225 Difference]: With dead ends: 4541 [2022-02-10 03:30:22,543 INFO L226 Difference]: Without dead ends: 4451 [2022-02-10 03:30:22,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 44 SyntacticMatches, 7 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1475 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=914, Invalid=4636, Unknown=0, NotChecked=0, Total=5550 [2022-02-10 03:30:22,544 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 225 mSDsluCounter, 1518 mSDsCounter, 0 mSdLazyCounter, 1129 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 1292 SdHoareTripleChecker+Invalid, 1482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 285 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 03:30:22,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 1292 Invalid, 1482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1129 Invalid, 0 Unknown, 285 Unchecked, 0.6s Time] [2022-02-10 03:30:22,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4451 states. [2022-02-10 03:30:22,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4451 to 2883. [2022-02-10 03:30:22,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2883 states, 2882 states have (on average 1.4642609299097848) internal successors, (4220), 2882 states have internal predecessors, (4220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:30:22,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2883 states to 2883 states and 4220 transitions. [2022-02-10 03:30:22,577 INFO L78 Accepts]: Start accepts. Automaton has 2883 states and 4220 transitions. Word has length 35 [2022-02-10 03:30:22,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:30:22,577 INFO L470 AbstractCegarLoop]: Abstraction has 2883 states and 4220 transitions. [2022-02-10 03:30:22,577 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) [2022-02-10 03:30:22,577 INFO L276 IsEmpty]: Start isEmpty. Operand 2883 states and 4220 transitions. [2022-02-10 03:30:22,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-02-10 03:30:22,579 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:30:22,579 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:30:22,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2022-02-10 03:30:22,783 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 [2022-02-10 03:30:22,783 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:30:22,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:30:22,784 INFO L85 PathProgramCache]: Analyzing trace with hash -357466464, now seen corresponding path program 58 times [2022-02-10 03:30:22,784 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:30:22,784 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500283085] [2022-02-10 03:30:22,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:30:22,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:30:22,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:30:23,087 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:30:23,088 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:30:23,088 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500283085] [2022-02-10 03:30:23,088 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500283085] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:30:23,088 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506230647] [2022-02-10 03:30:23,088 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:30:23,088 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:30:23,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:30:23,089 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:30:23,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-02-10 03:30:23,112 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:30:23,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:30:23,113 WARN L261 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 49 conjunts are in the unsatisfiable core [2022-02-10 03:30:23,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:30:23,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:23,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:23,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:23,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:23,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:23,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:23,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:23,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:23,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:23,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:23,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:23,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:23,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:23,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:23,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:23,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:23,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:23,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:23,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:23,696 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:23,697 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 [2022-02-10 03:30:23,716 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:30:23,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:30:24,626 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-02-10 03:30:24,626 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 [2022-02-10 03:30:25,612 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 6 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:30:25,612 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506230647] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:30:25,612 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:30:25,612 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 34 [2022-02-10 03:30:25,612 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815822885] [2022-02-10 03:30:25,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:30:25,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-10 03:30:25,613 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:30:25,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-10 03:30:25,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=983, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 03:30:25,613 INFO L87 Difference]: Start difference. First operand 2883 states and 4220 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) [2022-02-10 03:30:26,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:30:26,969 INFO L93 Difference]: Finished difference Result 4365 states and 6269 transitions. [2022-02-10 03:30:26,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-02-10 03:30:26,969 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 [2022-02-10 03:30:26,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:30:26,974 INFO L225 Difference]: With dead ends: 4365 [2022-02-10 03:30:26,975 INFO L226 Difference]: Without dead ends: 4347 [2022-02-10 03:30:26,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 46 SyntacticMatches, 6 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1042 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=710, Invalid=3450, Unknown=0, NotChecked=0, Total=4160 [2022-02-10 03:30:26,975 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 235 mSDsluCounter, 1334 mSDsCounter, 0 mSdLazyCounter, 930 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 1251 SdHoareTripleChecker+Invalid, 1394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 408 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 03:30:26,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 1251 Invalid, 1394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 930 Invalid, 0 Unknown, 408 Unchecked, 0.5s Time] [2022-02-10 03:30:26,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4347 states. [2022-02-10 03:30:27,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4347 to 2969. [2022-02-10 03:30:27,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2969 states, 2968 states have (on average 1.463611859838275) internal successors, (4344), 2968 states have internal predecessors, (4344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:30:27,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2969 states to 2969 states and 4344 transitions. [2022-02-10 03:30:27,012 INFO L78 Accepts]: Start accepts. Automaton has 2969 states and 4344 transitions. Word has length 35 [2022-02-10 03:30:27,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:30:27,012 INFO L470 AbstractCegarLoop]: Abstraction has 2969 states and 4344 transitions. [2022-02-10 03:30:27,013 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) [2022-02-10 03:30:27,013 INFO L276 IsEmpty]: Start isEmpty. Operand 2969 states and 4344 transitions. [2022-02-10 03:30:27,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-02-10 03:30:27,015 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:30:27,015 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:30:27,031 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2022-02-10 03:30:27,215 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 [2022-02-10 03:30:27,216 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:30:27,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:30:27,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1102505424, now seen corresponding path program 59 times [2022-02-10 03:30:27,216 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:30:27,216 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304365892] [2022-02-10 03:30:27,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:30:27,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:30:27,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:30:27,509 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:30:27,509 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:30:27,509 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304365892] [2022-02-10 03:30:27,509 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304365892] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:30:27,509 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15553631] [2022-02-10 03:30:27,509 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 03:30:27,509 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:30:27,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:30:27,510 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:30:27,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-02-10 03:30:27,535 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-10 03:30:27,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:30:27,536 WARN L261 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 50 conjunts are in the unsatisfiable core [2022-02-10 03:30:27,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:30:28,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:28,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:28,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:28,118 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:28,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:28,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:28,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:28,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:28,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:28,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:28,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:28,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:28,123 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:28,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:28,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:28,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:28,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:28,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:28,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:28,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:28,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:28,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:28,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:28,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:28,130 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:28,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:28,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:28,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:28,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:28,132 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:28,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:28,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:28,134 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:28,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:28,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:28,135 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:28,136 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 15 disjoint index pairs (out of 66 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 28 [2022-02-10 03:30:28,163 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:30:28,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:30:28,937 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:28,937 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:28,938 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:28,939 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:28,939 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:28,940 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:28,941 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:28,942 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:28,942 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:28,942 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:28,943 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:28,943 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:28,944 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:28,944 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:28,944 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:28,945 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:28,945 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:28,947 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:28,949 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:28,949 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:28,950 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:28,950 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:28,951 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:28,951 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:28,952 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:28,952 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:28,953 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:28,953 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:28,954 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:28,954 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:28,954 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:28,955 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:28,955 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:28,956 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:28,956 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:28,956 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:28,957 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:28,957 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:28,957 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:28,957 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:28,958 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:28,959 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:28,960 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:28,961 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:28,961 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:29,032 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:30:29,032 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 [2022-02-10 03:30:29,515 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:30:29,516 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15553631] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:30:29,516 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:30:29,516 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 41 [2022-02-10 03:30:29,516 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683936999] [2022-02-10 03:30:29,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:30:29,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-02-10 03:30:29,516 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:30:29,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-02-10 03:30:29,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=1362, Unknown=0, NotChecked=0, Total=1722 [2022-02-10 03:30:29,517 INFO L87 Difference]: Start difference. First operand 2969 states and 4344 transitions. Second operand has 42 states, 42 states have (on average 2.2857142857142856) internal successors, (96), 41 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:30:33,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:30:33,195 INFO L93 Difference]: Finished difference Result 4295 states and 6167 transitions. [2022-02-10 03:30:33,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-02-10 03:30:33,195 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.2857142857142856) internal successors, (96), 41 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have 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 [2022-02-10 03:30:33,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:30:33,200 INFO L225 Difference]: With dead ends: 4295 [2022-02-10 03:30:33,201 INFO L226 Difference]: Without dead ends: 4221 [2022-02-10 03:30:33,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 43 SyntacticMatches, 8 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2101 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1384, Invalid=6626, Unknown=0, NotChecked=0, Total=8010 [2022-02-10 03:30:33,201 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 326 mSDsluCounter, 972 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 972 SdHoareTripleChecker+Invalid, 976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 318 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 03:30:33,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [326 Valid, 972 Invalid, 976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 548 Invalid, 0 Unknown, 318 Unchecked, 0.4s Time] [2022-02-10 03:30:33,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4221 states. [2022-02-10 03:30:33,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4221 to 3072. [2022-02-10 03:30:33,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3072 states, 3071 states have (on average 1.4669488765874308) internal successors, (4505), 3071 states have internal predecessors, (4505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:30:33,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3072 states to 3072 states and 4505 transitions. [2022-02-10 03:30:33,244 INFO L78 Accepts]: Start accepts. Automaton has 3072 states and 4505 transitions. Word has length 35 [2022-02-10 03:30:33,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:30:33,244 INFO L470 AbstractCegarLoop]: Abstraction has 3072 states and 4505 transitions. [2022-02-10 03:30:33,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.2857142857142856) internal successors, (96), 41 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:30:33,244 INFO L276 IsEmpty]: Start isEmpty. Operand 3072 states and 4505 transitions. [2022-02-10 03:30:33,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-02-10 03:30:33,247 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:30:33,247 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:30:33,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2022-02-10 03:30:33,463 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 [2022-02-10 03:30:33,463 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:30:33,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:30:33,463 INFO L85 PathProgramCache]: Analyzing trace with hash -273815603, now seen corresponding path program 60 times [2022-02-10 03:30:33,463 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:30:33,463 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496854330] [2022-02-10 03:30:33,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:30:33,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:30:33,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:30:33,716 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:30:33,716 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:30:33,716 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496854330] [2022-02-10 03:30:33,717 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496854330] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:30:33,717 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585962929] [2022-02-10 03:30:33,717 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 03:30:33,717 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:30:33,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:30:33,718 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:30:33,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-02-10 03:30:33,760 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2022-02-10 03:30:33,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:30:33,761 WARN L261 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 03:30:33,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:30:34,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:34,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:34,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:34,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:34,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:34,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:34,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:34,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:34,511 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:34,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:34,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:34,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:34,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:34,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:34,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:34,515 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:34,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:34,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:34,516 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:34,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:34,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:34,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:34,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:34,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:34,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:34,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:34,521 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:34,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:34,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:34,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:34,523 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:34,523 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 [2022-02-10 03:30:34,543 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 3 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:30:34,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:30:35,466 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-02-10 03:30:35,467 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 [2022-02-10 03:30:36,650 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 6 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:30:36,650 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585962929] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:30:36,650 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:30:36,650 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 15] total 39 [2022-02-10 03:30:36,650 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284164440] [2022-02-10 03:30:36,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:30:36,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-10 03:30:36,651 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:30:36,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-10 03:30:36,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=1303, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 03:30:36,651 INFO L87 Difference]: Start difference. First operand 3072 states and 4505 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) [2022-02-10 03:30:38,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:30:38,330 INFO L93 Difference]: Finished difference Result 5051 states and 7267 transitions. [2022-02-10 03:30:38,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-02-10 03:30:38,331 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 [2022-02-10 03:30:38,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:30:38,336 INFO L225 Difference]: With dead ends: 5051 [2022-02-10 03:30:38,336 INFO L226 Difference]: Without dead ends: 4703 [2022-02-10 03:30:38,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1478 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=854, Invalid=4402, Unknown=0, NotChecked=0, Total=5256 [2022-02-10 03:30:38,337 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 430 mSDsluCounter, 1965 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 1366 SdHoareTripleChecker+Invalid, 1669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 414 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 03:30:38,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [430 Valid, 1366 Invalid, 1669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1173 Invalid, 0 Unknown, 414 Unchecked, 0.6s Time] [2022-02-10 03:30:38,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4703 states. [2022-02-10 03:30:38,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4703 to 2975. [2022-02-10 03:30:38,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2975 states, 2974 states have (on average 1.4643577673167452) internal successors, (4355), 2974 states have internal predecessors, (4355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:30:38,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2975 states to 2975 states and 4355 transitions. [2022-02-10 03:30:38,372 INFO L78 Accepts]: Start accepts. Automaton has 2975 states and 4355 transitions. Word has length 38 [2022-02-10 03:30:38,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:30:38,373 INFO L470 AbstractCegarLoop]: Abstraction has 2975 states and 4355 transitions. [2022-02-10 03:30:38,373 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) [2022-02-10 03:30:38,373 INFO L276 IsEmpty]: Start isEmpty. Operand 2975 states and 4355 transitions. [2022-02-10 03:30:38,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-02-10 03:30:38,375 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:30:38,375 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:30:38,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2022-02-10 03:30:38,579 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 [2022-02-10 03:30:38,580 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:30:38,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:30:38,580 INFO L85 PathProgramCache]: Analyzing trace with hash -403873171, now seen corresponding path program 61 times [2022-02-10 03:30:38,580 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:30:38,580 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918580229] [2022-02-10 03:30:38,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:30:38,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:30:38,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:30:38,846 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:30:38,846 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:30:38,846 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918580229] [2022-02-10 03:30:38,846 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918580229] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:30:38,846 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275477311] [2022-02-10 03:30:38,846 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 03:30:38,846 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:30:38,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:30:38,847 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:30:38,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-02-10 03:30:38,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:30:38,870 WARN L261 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 49 conjunts are in the unsatisfiable core [2022-02-10 03:30:38,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:30:39,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:39,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:39,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:39,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:39,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:39,562 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:39,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:39,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:39,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:39,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:39,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:39,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:39,566 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:39,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:39,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:39,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:39,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:39,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:39,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:39,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:39,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:39,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:39,571 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:39,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:39,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:39,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:39,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:39,574 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:39,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:39,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:39,575 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:39,576 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 [2022-02-10 03:30:39,594 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:30:39,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:30:40,516 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-02-10 03:30:40,517 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 [2022-02-10 03:30:41,438 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 12 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:30:41,438 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275477311] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:30:41,438 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:30:41,439 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 38 [2022-02-10 03:30:41,439 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691843376] [2022-02-10 03:30:41,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:30:41,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-10 03:30:41,439 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:30:41,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-10 03:30:41,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=1241, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 03:30:41,439 INFO L87 Difference]: Start difference. First operand 2975 states and 4355 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) [2022-02-10 03:30:42,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:30:42,660 INFO L93 Difference]: Finished difference Result 4142 states and 5982 transitions. [2022-02-10 03:30:42,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-02-10 03:30:42,660 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 [2022-02-10 03:30:42,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:30:42,664 INFO L225 Difference]: With dead ends: 4142 [2022-02-10 03:30:42,664 INFO L226 Difference]: Without dead ends: 4124 [2022-02-10 03:30:42,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1336 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=723, Invalid=3969, Unknown=0, NotChecked=0, Total=4692 [2022-02-10 03:30:42,664 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 185 mSDsluCounter, 1085 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 1058 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 377 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 03:30:42,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 1058 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 777 Invalid, 0 Unknown, 377 Unchecked, 0.4s Time] [2022-02-10 03:30:42,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4124 states. [2022-02-10 03:30:42,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4124 to 2968. [2022-02-10 03:30:42,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2968 states, 2967 states have (on average 1.4644421975058983) internal successors, (4345), 2967 states have internal predecessors, (4345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:30:42,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2968 states to 2968 states and 4345 transitions. [2022-02-10 03:30:42,697 INFO L78 Accepts]: Start accepts. Automaton has 2968 states and 4345 transitions. Word has length 38 [2022-02-10 03:30:42,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:30:42,697 INFO L470 AbstractCegarLoop]: Abstraction has 2968 states and 4345 transitions. [2022-02-10 03:30:42,697 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) [2022-02-10 03:30:42,697 INFO L276 IsEmpty]: Start isEmpty. Operand 2968 states and 4345 transitions. [2022-02-10 03:30:42,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-02-10 03:30:42,700 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:30:42,700 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:30:42,716 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2022-02-10 03:30:42,913 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 [2022-02-10 03:30:42,913 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:30:42,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:30:42,913 INFO L85 PathProgramCache]: Analyzing trace with hash 970600701, now seen corresponding path program 62 times [2022-02-10 03:30:42,913 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:30:42,913 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856206286] [2022-02-10 03:30:42,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:30:42,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:30:42,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:30:43,180 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:30:43,180 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:30:43,180 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856206286] [2022-02-10 03:30:43,180 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856206286] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:30:43,180 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386509917] [2022-02-10 03:30:43,180 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:30:43,180 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:30:43,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:30:43,181 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:30:43,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-02-10 03:30:43,204 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:30:43,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:30:43,205 WARN L261 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 49 conjunts are in the unsatisfiable core [2022-02-10 03:30:43,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:30:43,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:43,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:43,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:43,898 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:43,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:43,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:43,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:43,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:43,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:43,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:43,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:43,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:43,904 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:43,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:43,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:43,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:43,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:43,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:43,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:43,908 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:43,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:43,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:43,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:43,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:43,912 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:43,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:43,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:43,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:43,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:43,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:43,916 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:43,917 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 [2022-02-10 03:30:43,936 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:30:43,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:30:44,852 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-02-10 03:30:44,853 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 [2022-02-10 03:30:45,523 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 24 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:30:45,524 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386509917] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:30:45,524 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:30:45,524 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 38 [2022-02-10 03:30:45,524 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020887843] [2022-02-10 03:30:45,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:30:45,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-10 03:30:45,524 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:30:45,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-10 03:30:45,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=1241, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 03:30:45,525 INFO L87 Difference]: Start difference. First operand 2968 states and 4345 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) [2022-02-10 03:30:46,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:30:46,586 INFO L93 Difference]: Finished difference Result 4013 states and 5798 transitions. [2022-02-10 03:30:46,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-02-10 03:30:46,586 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 [2022-02-10 03:30:46,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:30:46,591 INFO L225 Difference]: With dead ends: 4013 [2022-02-10 03:30:46,591 INFO L226 Difference]: Without dead ends: 3995 [2022-02-10 03:30:46,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1093 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=619, Invalid=3413, Unknown=0, NotChecked=0, Total=4032 [2022-02-10 03:30:46,592 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 205 mSDsluCounter, 823 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 297 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 03:30:46,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 826 Invalid, 977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 614 Invalid, 0 Unknown, 297 Unchecked, 0.4s Time] [2022-02-10 03:30:46,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3995 states. [2022-02-10 03:30:46,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3995 to 2957. [2022-02-10 03:30:46,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2957 states, 2956 states have (on average 1.4644790257104194) internal successors, (4329), 2956 states have internal predecessors, (4329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:30:46,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2957 states to 2957 states and 4329 transitions. [2022-02-10 03:30:46,631 INFO L78 Accepts]: Start accepts. Automaton has 2957 states and 4329 transitions. Word has length 38 [2022-02-10 03:30:46,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:30:46,632 INFO L470 AbstractCegarLoop]: Abstraction has 2957 states and 4329 transitions. [2022-02-10 03:30:46,632 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) [2022-02-10 03:30:46,632 INFO L276 IsEmpty]: Start isEmpty. Operand 2957 states and 4329 transitions. [2022-02-10 03:30:46,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-02-10 03:30:46,635 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:30:46,635 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:30:46,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2022-02-10 03:30:46,851 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 [2022-02-10 03:30:46,851 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:30:46,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:30:46,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1176898611, now seen corresponding path program 63 times [2022-02-10 03:30:46,852 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:30:46,852 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461759757] [2022-02-10 03:30:46,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:30:46,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:30:46,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:30:47,091 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 2 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:30:47,092 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:30:47,092 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461759757] [2022-02-10 03:30:47,092 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461759757] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:30:47,092 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179546440] [2022-02-10 03:30:47,092 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:30:47,092 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:30:47,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:30:47,093 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:30:47,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-02-10 03:30:47,121 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-02-10 03:30:47,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:30:47,122 WARN L261 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 51 conjunts are in the unsatisfiable core [2022-02-10 03:30:47,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:30:47,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:47,777 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:47,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:47,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:47,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:47,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:47,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:47,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:47,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:47,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:47,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:47,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:47,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:47,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:47,784 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:47,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:47,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:47,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:47,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:47,787 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:47,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:47,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:47,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:47,789 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:47,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:47,790 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 107 treesize of output 39 [2022-02-10 03:30:47,808 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:30:47,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:30:48,694 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-02-10 03:30:48,695 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 [2022-02-10 03:30:49,588 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 5 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:30:49,589 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179546440] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:30:49,589 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:30:49,589 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 15] total 35 [2022-02-10 03:30:49,589 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920399283] [2022-02-10 03:30:49,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:30:49,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-02-10 03:30:49,589 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:30:49,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-02-10 03:30:49,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=1026, Unknown=0, NotChecked=0, Total=1260 [2022-02-10 03:30:49,590 INFO L87 Difference]: Start difference. First operand 2957 states and 4329 transitions. Second operand has 36 states, 36 states have (on average 2.638888888888889) internal successors, (95), 35 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) [2022-02-10 03:30:51,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:30:51,232 INFO L93 Difference]: Finished difference Result 4558 states and 6464 transitions. [2022-02-10 03:30:51,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-02-10 03:30:51,233 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.638888888888889) internal successors, (95), 35 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 [2022-02-10 03:30:51,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:30:51,238 INFO L225 Difference]: With dead ends: 4558 [2022-02-10 03:30:51,238 INFO L226 Difference]: Without dead ends: 4302 [2022-02-10 03:30:51,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 51 SyntacticMatches, 5 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1014 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=560, Invalid=3100, Unknown=0, NotChecked=0, Total=3660 [2022-02-10 03:30:51,238 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 469 mSDsluCounter, 1860 mSDsCounter, 0 mSdLazyCounter, 1329 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 1314 SdHoareTripleChecker+Invalid, 1597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 155 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 03:30:51,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [469 Valid, 1314 Invalid, 1597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1329 Invalid, 0 Unknown, 155 Unchecked, 0.7s Time] [2022-02-10 03:30:51,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4302 states. [2022-02-10 03:30:51,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4302 to 3143. [2022-02-10 03:30:51,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3143 states, 3142 states have (on average 1.4665817950350095) internal successors, (4608), 3142 states have internal predecessors, (4608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:30:51,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3143 states to 3143 states and 4608 transitions. [2022-02-10 03:30:51,275 INFO L78 Accepts]: Start accepts. Automaton has 3143 states and 4608 transitions. Word has length 38 [2022-02-10 03:30:51,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:30:51,275 INFO L470 AbstractCegarLoop]: Abstraction has 3143 states and 4608 transitions. [2022-02-10 03:30:51,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.638888888888889) internal successors, (95), 35 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) [2022-02-10 03:30:51,275 INFO L276 IsEmpty]: Start isEmpty. Operand 3143 states and 4608 transitions. [2022-02-10 03:30:51,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-02-10 03:30:51,278 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:30:51,278 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:30:51,298 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2022-02-10 03:30:51,479 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 [2022-02-10 03:30:51,479 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:30:51,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:30:51,479 INFO L85 PathProgramCache]: Analyzing trace with hash 31896893, now seen corresponding path program 64 times [2022-02-10 03:30:51,479 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:30:51,479 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852009871] [2022-02-10 03:30:51,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:30:51,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:30:51,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:30:51,765 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:30:51,765 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:30:51,765 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852009871] [2022-02-10 03:30:51,766 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852009871] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:30:51,766 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855763801] [2022-02-10 03:30:51,766 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:30:51,766 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:30:51,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:30:51,767 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:30:51,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-02-10 03:30:51,788 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:30:51,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:30:51,789 WARN L261 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 49 conjunts are in the unsatisfiable core [2022-02-10 03:30:51,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:30:52,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:52,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:52,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:52,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:52,446 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:52,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:52,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:52,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:52,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:52,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:52,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:52,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:52,450 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:52,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:52,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:52,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:52,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:52,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:52,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:52,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:52,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:52,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:52,456 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:52,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:52,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:52,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:52,458 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:52,459 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 [2022-02-10 03:30:52,481 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:30:52,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:30:53,368 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-02-10 03:30:53,369 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 [2022-02-10 03:30:54,127 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 6 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:30:54,127 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855763801] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:30:54,127 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:30:54,128 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 37 [2022-02-10 03:30:54,128 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154472509] [2022-02-10 03:30:54,128 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:30:54,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-10 03:30:54,128 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:30:54,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-10 03:30:54,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=1174, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 03:30:54,128 INFO L87 Difference]: Start difference. First operand 3143 states and 4608 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) [2022-02-10 03:30:55,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:30:55,431 INFO L93 Difference]: Finished difference Result 4194 states and 6056 transitions. [2022-02-10 03:30:55,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-02-10 03:30:55,431 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 [2022-02-10 03:30:55,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:30:55,436 INFO L225 Difference]: With dead ends: 4194 [2022-02-10 03:30:55,436 INFO L226 Difference]: Without dead ends: 4185 [2022-02-10 03:30:55,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 54 SyntacticMatches, 3 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1327 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=805, Invalid=4025, Unknown=0, NotChecked=0, Total=4830 [2022-02-10 03:30:55,437 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 214 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 308 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:30:55,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [214 Valid, 793 Invalid, 948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 570 Invalid, 0 Unknown, 308 Unchecked, 0.3s Time] [2022-02-10 03:30:55,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4185 states. [2022-02-10 03:30:55,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4185 to 3143. [2022-02-10 03:30:55,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3143 states, 3142 states have (on average 1.4665817950350095) internal successors, (4608), 3142 states have internal predecessors, (4608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:30:55,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3143 states to 3143 states and 4608 transitions. [2022-02-10 03:30:55,471 INFO L78 Accepts]: Start accepts. Automaton has 3143 states and 4608 transitions. Word has length 38 [2022-02-10 03:30:55,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:30:55,471 INFO L470 AbstractCegarLoop]: Abstraction has 3143 states and 4608 transitions. [2022-02-10 03:30:55,471 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) [2022-02-10 03:30:55,471 INFO L276 IsEmpty]: Start isEmpty. Operand 3143 states and 4608 transitions. [2022-02-10 03:30:55,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-02-10 03:30:55,474 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:30:55,474 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:30:55,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2022-02-10 03:30:55,685 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 [2022-02-10 03:30:55,685 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:30:55,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:30:55,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1406370765, now seen corresponding path program 65 times [2022-02-10 03:30:55,685 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:30:55,685 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109652451] [2022-02-10 03:30:55,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:30:55,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:30:55,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:30:55,988 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:30:55,988 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:30:55,988 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109652451] [2022-02-10 03:30:55,988 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109652451] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:30:55,988 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707395339] [2022-02-10 03:30:55,988 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 03:30:55,989 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:30:55,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:30:55,989 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:30:55,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-02-10 03:30:56,014 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-02-10 03:30:56,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:30:56,014 WARN L261 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 49 conjunts are in the unsatisfiable core [2022-02-10 03:30:56,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:30:56,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:56,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:56,653 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:56,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:56,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:56,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:56,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:56,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:56,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:56,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:56,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:56,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:56,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:56,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:56,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:56,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:56,660 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:56,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:56,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:56,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:56,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:56,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:56,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:56,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:56,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:56,665 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:56,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:56,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:30:56,666 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:30:56,667 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 [2022-02-10 03:30:56,685 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:30:56,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:30:57,594 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-02-10 03:30:57,595 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 [2022-02-10 03:30:58,408 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 16 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:30:58,408 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707395339] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:30:58,408 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:30:58,408 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 37 [2022-02-10 03:30:58,409 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259552875] [2022-02-10 03:30:58,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:30:58,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-10 03:30:58,409 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:30:58,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-10 03:30:58,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=1174, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 03:30:58,409 INFO L87 Difference]: Start difference. First operand 3143 states and 4608 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) [2022-02-10 03:30:59,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:30:59,562 INFO L93 Difference]: Finished difference Result 4379 states and 6336 transitions. [2022-02-10 03:30:59,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-02-10 03:30:59,562 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 [2022-02-10 03:30:59,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:30:59,567 INFO L225 Difference]: With dead ends: 4379 [2022-02-10 03:30:59,568 INFO L226 Difference]: Without dead ends: 4361 [2022-02-10 03:30:59,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 50 SyntacticMatches, 3 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1058 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=659, Invalid=3373, Unknown=0, NotChecked=0, Total=4032 [2022-02-10 03:30:59,568 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 202 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 203 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 03:30:59,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [202 Valid, 785 Invalid, 875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 613 Invalid, 0 Unknown, 203 Unchecked, 0.4s Time] [2022-02-10 03:30:59,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4361 states. [2022-02-10 03:30:59,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4361 to 3146. [2022-02-10 03:30:59,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3146 states, 3145 states have (on average 1.4670906200317966) internal successors, (4614), 3145 states have internal predecessors, (4614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:30:59,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3146 states to 3146 states and 4614 transitions. [2022-02-10 03:30:59,601 INFO L78 Accepts]: Start accepts. Automaton has 3146 states and 4614 transitions. Word has length 38 [2022-02-10 03:30:59,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:30:59,601 INFO L470 AbstractCegarLoop]: Abstraction has 3146 states and 4614 transitions. [2022-02-10 03:30:59,601 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) [2022-02-10 03:30:59,601 INFO L276 IsEmpty]: Start isEmpty. Operand 3146 states and 4614 transitions. [2022-02-10 03:30:59,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-02-10 03:30:59,604 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:30:59,604 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:30:59,625 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2022-02-10 03:30:59,804 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 [2022-02-10 03:30:59,804 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:30:59,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:30:59,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1749198835, now seen corresponding path program 66 times [2022-02-10 03:30:59,805 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:30:59,805 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768721866] [2022-02-10 03:30:59,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:30:59,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:30:59,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:31:00,063 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:31:00,064 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:31:00,064 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768721866] [2022-02-10 03:31:00,065 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768721866] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:31:00,065 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253195162] [2022-02-10 03:31:00,065 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 03:31:00,065 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:31:00,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:31:00,066 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:31:00,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-02-10 03:31:00,091 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-02-10 03:31:00,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:31:00,092 WARN L261 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 49 conjunts are in the unsatisfiable core [2022-02-10 03:31:00,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:31:00,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:00,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:00,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:00,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:00,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:00,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:00,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:00,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:00,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:00,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:00,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:00,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:00,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:00,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:00,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:00,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:00,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:00,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:00,700 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:31:00,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:00,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:00,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:00,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:00,703 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:31:00,704 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 [2022-02-10 03:31:00,722 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:31:00,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:31:01,612 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-02-10 03:31:01,613 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 [2022-02-10 03:31:02,517 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 8 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:31:02,517 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253195162] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:31:02,517 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:31:02,517 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 34 [2022-02-10 03:31:02,517 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504458326] [2022-02-10 03:31:02,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:31:02,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-10 03:31:02,518 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:31:02,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-10 03:31:02,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=985, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 03:31:02,518 INFO L87 Difference]: Start difference. First operand 3146 states and 4614 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) [2022-02-10 03:31:04,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:31:04,151 INFO L93 Difference]: Finished difference Result 5750 states and 8232 transitions. [2022-02-10 03:31:04,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-02-10 03:31:04,151 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 [2022-02-10 03:31:04,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:31:04,157 INFO L225 Difference]: With dead ends: 5750 [2022-02-10 03:31:04,157 INFO L226 Difference]: Without dead ends: 5418 [2022-02-10 03:31:04,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 50 SyntacticMatches, 6 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1195 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=752, Invalid=3804, Unknown=0, NotChecked=0, Total=4556 [2022-02-10 03:31:04,158 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 528 mSDsluCounter, 1986 mSDsCounter, 0 mSdLazyCounter, 1080 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 1339 SdHoareTripleChecker+Invalid, 1694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 512 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 03:31:04,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [528 Valid, 1339 Invalid, 1694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1080 Invalid, 0 Unknown, 512 Unchecked, 0.5s Time] [2022-02-10 03:31:04,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5418 states. [2022-02-10 03:31:04,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5418 to 3450. [2022-02-10 03:31:04,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3450 states, 3449 states have (on average 1.4636126413453174) internal successors, (5048), 3449 states have internal predecessors, (5048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:31:04,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3450 states to 3450 states and 5048 transitions. [2022-02-10 03:31:04,204 INFO L78 Accepts]: Start accepts. Automaton has 3450 states and 5048 transitions. Word has length 38 [2022-02-10 03:31:04,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:31:04,204 INFO L470 AbstractCegarLoop]: Abstraction has 3450 states and 5048 transitions. [2022-02-10 03:31:04,204 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) [2022-02-10 03:31:04,205 INFO L276 IsEmpty]: Start isEmpty. Operand 3450 states and 5048 transitions. [2022-02-10 03:31:04,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-02-10 03:31:04,207 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:31:04,207 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:31:04,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2022-02-10 03:31:04,407 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 [2022-02-10 03:31:04,408 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:31:04,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:31:04,408 INFO L85 PathProgramCache]: Analyzing trace with hash -2058289651, now seen corresponding path program 67 times [2022-02-10 03:31:04,408 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:31:04,408 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453971490] [2022-02-10 03:31:04,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:31:04,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:31:04,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:31:04,638 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 2 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:31:04,639 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:31:04,639 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453971490] [2022-02-10 03:31:04,639 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453971490] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:31:04,639 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112354395] [2022-02-10 03:31:04,639 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 03:31:04,639 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:31:04,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:31:04,640 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:31:04,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-02-10 03:31:04,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:31:04,662 WARN L261 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 49 conjunts are in the unsatisfiable core [2022-02-10 03:31:04,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:31:05,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:05,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:05,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:05,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:05,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:05,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:05,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:05,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:05,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:05,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:05,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:05,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:05,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:05,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:05,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:05,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:05,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:05,266 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:31:05,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:05,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:05,267 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:31:05,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:05,268 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 [2022-02-10 03:31:05,287 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:31:05,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:31:06,198 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-02-10 03:31:06,199 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 [2022-02-10 03:31:07,037 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 5 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:31:07,037 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112354395] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:31:07,037 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:31:07,037 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 15] total 33 [2022-02-10 03:31:07,037 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020074127] [2022-02-10 03:31:07,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:31:07,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-10 03:31:07,038 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:31:07,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-10 03:31:07,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=914, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 03:31:07,038 INFO L87 Difference]: Start difference. First operand 3450 states and 5048 transitions. Second operand has 34 states, 34 states have (on average 2.6176470588235294) internal successors, (89), 33 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) [2022-02-10 03:31:08,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:31:08,644 INFO L93 Difference]: Finished difference Result 6091 states and 8647 transitions. [2022-02-10 03:31:08,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-02-10 03:31:08,644 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.6176470588235294) internal successors, (89), 33 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 [2022-02-10 03:31:08,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:31:08,651 INFO L225 Difference]: With dead ends: 6091 [2022-02-10 03:31:08,651 INFO L226 Difference]: Without dead ends: 5824 [2022-02-10 03:31:08,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 50 SyntacticMatches, 7 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=667, Invalid=3115, Unknown=0, NotChecked=0, Total=3782 [2022-02-10 03:31:08,651 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 467 mSDsluCounter, 1549 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 1104 SdHoareTripleChecker+Invalid, 1322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 108 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 03:31:08,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [467 Valid, 1104 Invalid, 1322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1108 Invalid, 0 Unknown, 108 Unchecked, 0.6s Time] [2022-02-10 03:31:08,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5824 states. [2022-02-10 03:31:08,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5824 to 3595. [2022-02-10 03:31:08,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3595 states, 3594 states have (on average 1.4624373956594323) internal successors, (5256), 3594 states have internal predecessors, (5256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:31:08,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3595 states to 3595 states and 5256 transitions. [2022-02-10 03:31:08,696 INFO L78 Accepts]: Start accepts. Automaton has 3595 states and 5256 transitions. Word has length 38 [2022-02-10 03:31:08,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:31:08,696 INFO L470 AbstractCegarLoop]: Abstraction has 3595 states and 5256 transitions. [2022-02-10 03:31:08,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.6176470588235294) internal successors, (89), 33 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) [2022-02-10 03:31:08,696 INFO L276 IsEmpty]: Start isEmpty. Operand 3595 states and 5256 transitions. [2022-02-10 03:31:08,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-02-10 03:31:08,700 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:31:08,700 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:31:08,717 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2022-02-10 03:31:08,903 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 [2022-02-10 03:31:08,903 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:31:08,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:31:08,904 INFO L85 PathProgramCache]: Analyzing trace with hash -2140758003, now seen corresponding path program 68 times [2022-02-10 03:31:08,904 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:31:08,904 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321693753] [2022-02-10 03:31:08,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:31:08,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:31:08,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:31:09,191 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:31:09,191 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:31:09,191 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321693753] [2022-02-10 03:31:09,191 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321693753] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:31:09,191 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968807452] [2022-02-10 03:31:09,191 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:31:09,191 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:31:09,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:31:09,192 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:31:09,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-02-10 03:31:09,215 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:31:09,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:31:09,216 WARN L261 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 49 conjunts are in the unsatisfiable core [2022-02-10 03:31:09,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:31:09,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:09,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:09,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:09,831 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:31:09,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:09,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:09,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:09,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:09,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:09,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:09,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:09,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:09,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:09,837 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:31:09,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:09,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:09,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:09,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:09,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:09,840 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 [2022-02-10 03:31:09,858 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:31:09,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:31:10,787 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-02-10 03:31:10,787 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 [2022-02-10 03:31:11,721 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 3 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:31:11,721 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968807452] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:31:11,721 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:31:11,721 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 35 [2022-02-10 03:31:11,722 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431791603] [2022-02-10 03:31:11,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:31:11,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-02-10 03:31:11,722 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:31:11,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-02-10 03:31:11,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=1044, Unknown=0, NotChecked=0, Total=1260 [2022-02-10 03:31:11,722 INFO L87 Difference]: Start difference. First operand 3595 states and 5256 transitions. Second operand has 36 states, 36 states have (on average 2.4722222222222223) internal successors, (89), 35 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) [2022-02-10 03:31:13,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:31:13,110 INFO L93 Difference]: Finished difference Result 5044 states and 7267 transitions. [2022-02-10 03:31:13,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-02-10 03:31:13,110 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.4722222222222223) internal successors, (89), 35 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 [2022-02-10 03:31:13,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:31:13,115 INFO L225 Difference]: With dead ends: 5044 [2022-02-10 03:31:13,116 INFO L226 Difference]: Without dead ends: 5023 [2022-02-10 03:31:13,116 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 50 SyntacticMatches, 5 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1378 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=845, Invalid=4267, Unknown=0, NotChecked=0, Total=5112 [2022-02-10 03:31:13,116 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 236 mSDsluCounter, 1042 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 1043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 303 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 03:31:13,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 953 Invalid, 1043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 679 Invalid, 0 Unknown, 303 Unchecked, 0.4s Time] [2022-02-10 03:31:13,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5023 states. [2022-02-10 03:31:13,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5023 to 3504. [2022-02-10 03:31:13,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3504 states, 3503 states have (on average 1.461318869540394) internal successors, (5119), 3503 states have internal predecessors, (5119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:31:13,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3504 states to 3504 states and 5119 transitions. [2022-02-10 03:31:13,158 INFO L78 Accepts]: Start accepts. Automaton has 3504 states and 5119 transitions. Word has length 38 [2022-02-10 03:31:13,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:31:13,158 INFO L470 AbstractCegarLoop]: Abstraction has 3504 states and 5119 transitions. [2022-02-10 03:31:13,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.4722222222222223) internal successors, (89), 35 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) [2022-02-10 03:31:13,159 INFO L276 IsEmpty]: Start isEmpty. Operand 3504 states and 5119 transitions. [2022-02-10 03:31:13,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-02-10 03:31:13,161 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:31:13,161 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:31:13,178 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2022-02-10 03:31:13,361 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 [2022-02-10 03:31:13,362 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:31:13,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:31:13,362 INFO L85 PathProgramCache]: Analyzing trace with hash -657492611, now seen corresponding path program 69 times [2022-02-10 03:31:13,362 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:31:13,362 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943342954] [2022-02-10 03:31:13,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:31:13,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:31:13,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:31:13,619 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:31:13,619 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:31:13,619 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943342954] [2022-02-10 03:31:13,619 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943342954] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:31:13,619 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436259397] [2022-02-10 03:31:13,619 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:31:13,619 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:31:13,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:31:13,620 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:31:13,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-02-10 03:31:13,646 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-02-10 03:31:13,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:31:13,648 WARN L261 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 49 conjunts are in the unsatisfiable core [2022-02-10 03:31:13,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:31:14,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:14,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:14,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:14,237 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:31:14,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:14,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:14,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:14,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:14,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:14,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:14,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:14,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:14,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:14,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:14,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:14,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:14,244 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 [2022-02-10 03:31:14,261 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:31:14,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:31:15,145 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-02-10 03:31:15,146 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 [2022-02-10 03:31:15,873 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 8 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:31:15,873 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436259397] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:31:15,873 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:31:15,873 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 33 [2022-02-10 03:31:15,873 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780800347] [2022-02-10 03:31:15,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:31:15,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-10 03:31:15,873 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:31:15,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-10 03:31:15,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=920, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 03:31:15,874 INFO L87 Difference]: Start difference. First operand 3504 states and 5119 transitions. Second operand has 34 states, 34 states have (on average 2.5294117647058822) internal successors, (86), 33 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) [2022-02-10 03:31:16,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:31:16,980 INFO L93 Difference]: Finished difference Result 5430 states and 7800 transitions. [2022-02-10 03:31:16,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-02-10 03:31:16,981 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.5294117647058822) internal successors, (86), 33 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 [2022-02-10 03:31:16,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:31:16,987 INFO L225 Difference]: With dead ends: 5430 [2022-02-10 03:31:16,987 INFO L226 Difference]: Without dead ends: 5380 [2022-02-10 03:31:16,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 50 SyntacticMatches, 7 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 876 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=632, Invalid=2908, Unknown=0, NotChecked=0, Total=3540 [2022-02-10 03:31:16,988 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 219 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 818 SdHoareTripleChecker+Invalid, 887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 171 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:31:16,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [219 Valid, 818 Invalid, 887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 630 Invalid, 0 Unknown, 171 Unchecked, 0.3s Time] [2022-02-10 03:31:16,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5380 states. [2022-02-10 03:31:17,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5380 to 3458. [2022-02-10 03:31:17,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3458 states, 3457 states have (on average 1.4602256291582296) internal successors, (5048), 3457 states have internal predecessors, (5048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:31:17,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3458 states to 3458 states and 5048 transitions. [2022-02-10 03:31:17,030 INFO L78 Accepts]: Start accepts. Automaton has 3458 states and 5048 transitions. Word has length 38 [2022-02-10 03:31:17,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:31:17,030 INFO L470 AbstractCegarLoop]: Abstraction has 3458 states and 5048 transitions. [2022-02-10 03:31:17,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.5294117647058822) internal successors, (86), 33 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) [2022-02-10 03:31:17,030 INFO L276 IsEmpty]: Start isEmpty. Operand 3458 states and 5048 transitions. [2022-02-10 03:31:17,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-02-10 03:31:17,032 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:31:17,032 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:31:17,050 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2022-02-10 03:31:17,233 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 [2022-02-10 03:31:17,233 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:31:17,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:31:17,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1398588035, now seen corresponding path program 70 times [2022-02-10 03:31:17,233 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:31:17,233 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734248444] [2022-02-10 03:31:17,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:31:17,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:31:17,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:31:17,509 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:31:17,509 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:31:17,509 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734248444] [2022-02-10 03:31:17,509 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734248444] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:31:17,509 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242140071] [2022-02-10 03:31:17,509 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:31:17,509 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:31:17,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:31:17,511 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:31:17,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-02-10 03:31:17,532 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:31:17,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:31:17,533 WARN L261 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 49 conjunts are in the unsatisfiable core [2022-02-10 03:31:17,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:31:18,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:18,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:18,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:18,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:18,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:18,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:18,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:18,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:18,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:18,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:18,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:18,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:18,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:18,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:18,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:18,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:18,140 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:31:18,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:18,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:18,141 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 [2022-02-10 03:31:18,160 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:31:18,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:31:19,039 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-02-10 03:31:19,039 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 [2022-02-10 03:31:20,118 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 8 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:31:20,119 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242140071] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:31:20,119 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:31:20,119 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 34 [2022-02-10 03:31:20,119 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733071317] [2022-02-10 03:31:20,119 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:31:20,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-10 03:31:20,119 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:31:20,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-10 03:31:20,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=983, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 03:31:20,120 INFO L87 Difference]: Start difference. First operand 3458 states and 5048 transitions. Second operand has 35 states, 35 states have (on average 2.4571428571428573) internal successors, (86), 34 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) [2022-02-10 03:31:21,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:31:21,191 INFO L93 Difference]: Finished difference Result 4116 states and 5959 transitions. [2022-02-10 03:31:21,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-02-10 03:31:21,191 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.4571428571428573) internal successors, (86), 34 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 [2022-02-10 03:31:21,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:31:21,195 INFO L225 Difference]: With dead ends: 4116 [2022-02-10 03:31:21,195 INFO L226 Difference]: Without dead ends: 4093 [2022-02-10 03:31:21,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 53 SyntacticMatches, 6 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 830 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=607, Invalid=2815, Unknown=0, NotChecked=0, Total=3422 [2022-02-10 03:31:21,196 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 210 mSDsluCounter, 1088 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 1070 SdHoareTripleChecker+Invalid, 1022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 555 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:31:21,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [210 Valid, 1070 Invalid, 1022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 425 Invalid, 0 Unknown, 555 Unchecked, 0.3s Time] [2022-02-10 03:31:21,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4093 states. [2022-02-10 03:31:21,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4093 to 3596. [2022-02-10 03:31:21,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3596 states, 3595 states have (on average 1.4636995827538248) internal successors, (5262), 3595 states have internal predecessors, (5262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:31:21,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3596 states to 3596 states and 5262 transitions. [2022-02-10 03:31:21,229 INFO L78 Accepts]: Start accepts. Automaton has 3596 states and 5262 transitions. Word has length 38 [2022-02-10 03:31:21,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:31:21,229 INFO L470 AbstractCegarLoop]: Abstraction has 3596 states and 5262 transitions. [2022-02-10 03:31:21,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.4571428571428573) internal successors, (86), 34 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) [2022-02-10 03:31:21,229 INFO L276 IsEmpty]: Start isEmpty. Operand 3596 states and 5262 transitions. [2022-02-10 03:31:21,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-02-10 03:31:21,231 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:31:21,231 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:31:21,246 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2022-02-10 03:31:21,432 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 [2022-02-10 03:31:21,432 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:31:21,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:31:21,432 INFO L85 PathProgramCache]: Analyzing trace with hash 410614205, now seen corresponding path program 71 times [2022-02-10 03:31:21,432 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:31:21,432 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598472723] [2022-02-10 03:31:21,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:31:21,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:31:21,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:31:21,730 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:31:21,730 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:31:21,730 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598472723] [2022-02-10 03:31:21,730 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598472723] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:31:21,730 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577157250] [2022-02-10 03:31:21,730 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 03:31:21,730 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:31:21,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:31:21,731 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:31:21,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-02-10 03:31:21,755 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-02-10 03:31:21,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:31:21,756 WARN L261 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 49 conjunts are in the unsatisfiable core [2022-02-10 03:31:21,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:31:22,292 INFO L353 Elim1Store]: treesize reduction 170, result has 0.6 percent of original size [2022-02-10 03:31:22,292 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 [2022-02-10 03:31:22,309 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:31:22,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:31:23,188 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-02-10 03:31:23,189 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 [2022-02-10 03:31:24,130 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 12 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:31:24,130 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577157250] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:31:24,130 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:31:24,130 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 33 [2022-02-10 03:31:24,130 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294695861] [2022-02-10 03:31:24,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:31:24,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-10 03:31:24,130 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:31:24,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-10 03:31:24,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=926, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 03:31:24,131 INFO L87 Difference]: Start difference. First operand 3596 states and 5262 transitions. Second operand has 34 states, 34 states have (on average 2.4411764705882355) internal successors, (83), 33 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) [2022-02-10 03:31:25,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:31:25,610 INFO L93 Difference]: Finished difference Result 5253 states and 7602 transitions. [2022-02-10 03:31:25,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-02-10 03:31:25,610 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.4411764705882355) internal successors, (83), 33 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 38 [2022-02-10 03:31:25,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:31:25,625 INFO L225 Difference]: With dead ends: 5253 [2022-02-10 03:31:25,625 INFO L226 Difference]: Without dead ends: 5235 [2022-02-10 03:31:25,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 50 SyntacticMatches, 7 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 789 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=610, Invalid=3050, Unknown=0, NotChecked=0, Total=3660 [2022-02-10 03:31:25,625 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 187 mSDsluCounter, 1476 mSDsCounter, 0 mSdLazyCounter, 1467 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 1441 SdHoareTripleChecker+Invalid, 1515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 03:31:25,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 1441 Invalid, 1515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1467 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-10 03:31:25,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5235 states. [2022-02-10 03:31:25,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5235 to 3560. [2022-02-10 03:31:25,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3560 states, 3559 states have (on average 1.4638943523461647) internal successors, (5210), 3559 states have internal predecessors, (5210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:31:25,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3560 states to 3560 states and 5210 transitions. [2022-02-10 03:31:25,661 INFO L78 Accepts]: Start accepts. Automaton has 3560 states and 5210 transitions. Word has length 38 [2022-02-10 03:31:25,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:31:25,661 INFO L470 AbstractCegarLoop]: Abstraction has 3560 states and 5210 transitions. [2022-02-10 03:31:25,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.4411764705882355) internal successors, (83), 33 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) [2022-02-10 03:31:25,661 INFO L276 IsEmpty]: Start isEmpty. Operand 3560 states and 5210 transitions. [2022-02-10 03:31:25,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 03:31:25,663 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:31:25,663 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:31:25,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2022-02-10 03:31:25,863 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 [2022-02-10 03:31:25,864 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:31:25,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:31:25,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1429202920, now seen corresponding path program 72 times [2022-02-10 03:31:25,864 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:31:25,864 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218253152] [2022-02-10 03:31:25,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:31:25,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:31:25,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:31:26,147 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:31:26,148 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:31:26,148 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218253152] [2022-02-10 03:31:26,148 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218253152] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:31:26,148 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808111664] [2022-02-10 03:31:26,148 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 03:31:26,148 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:31:26,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:31:26,149 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:31:26,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-02-10 03:31:26,172 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2022-02-10 03:31:26,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:31:26,175 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 57 conjunts are in the unsatisfiable core [2022-02-10 03:31:26,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:31:26,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:26,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:26,964 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:31:26,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:26,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:26,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:26,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:26,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:26,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:26,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:26,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:26,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:26,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:26,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:26,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:26,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:26,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:26,971 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:31:26,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:26,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:26,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:26,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:26,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:26,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:26,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:26,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:26,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:26,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:26,977 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:31:26,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:26,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:26,978 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:31:26,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:26,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:26,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:26,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:26,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:26,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:26,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:26,983 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:31:26,983 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:31:26,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:26,984 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 [2022-02-10 03:31:27,002 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 2 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:31:27,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:31:28,273 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-02-10 03:31:28,273 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 [2022-02-10 03:31:29,174 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 6 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:31:29,174 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808111664] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:31:29,174 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:31:29,175 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 17] total 43 [2022-02-10 03:31:29,175 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467906132] [2022-02-10 03:31:29,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:31:29,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-02-10 03:31:29,175 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:31:29,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-02-10 03:31:29,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=279, Invalid=1613, Unknown=0, NotChecked=0, Total=1892 [2022-02-10 03:31:29,175 INFO L87 Difference]: Start difference. First operand 3560 states and 5210 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) [2022-02-10 03:31:33,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:31:33,443 INFO L93 Difference]: Finished difference Result 7839 states and 11196 transitions. [2022-02-10 03:31:33,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2022-02-10 03:31:33,443 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 [2022-02-10 03:31:33,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:31:33,451 INFO L225 Difference]: With dead ends: 7839 [2022-02-10 03:31:33,451 INFO L226 Difference]: Without dead ends: 7693 [2022-02-10 03:31:33,452 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6005 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=2316, Invalid=14714, Unknown=0, NotChecked=0, Total=17030 [2022-02-10 03:31:33,452 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 327 mSDsluCounter, 2156 mSDsCounter, 0 mSdLazyCounter, 1503 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 1778 SdHoareTripleChecker+Invalid, 1995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 353 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-10 03:31:33,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [327 Valid, 1778 Invalid, 1995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1503 Invalid, 0 Unknown, 353 Unchecked, 0.9s Time] [2022-02-10 03:31:33,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7693 states. [2022-02-10 03:31:33,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7693 to 4313. [2022-02-10 03:31:33,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4313 states, 4312 states have (on average 1.4570964749536177) internal successors, (6283), 4312 states have internal predecessors, (6283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:31:33,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4313 states to 4313 states and 6283 transitions. [2022-02-10 03:31:33,506 INFO L78 Accepts]: Start accepts. Automaton has 4313 states and 6283 transitions. Word has length 39 [2022-02-10 03:31:33,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:31:33,506 INFO L470 AbstractCegarLoop]: Abstraction has 4313 states and 6283 transitions. [2022-02-10 03:31:33,506 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) [2022-02-10 03:31:33,506 INFO L276 IsEmpty]: Start isEmpty. Operand 4313 states and 6283 transitions. [2022-02-10 03:31:33,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 03:31:33,509 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:31:33,509 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:31:33,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2022-02-10 03:31:33,714 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 [2022-02-10 03:31:33,714 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:31:33,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:31:33,714 INFO L85 PathProgramCache]: Analyzing trace with hash -54729048, now seen corresponding path program 73 times [2022-02-10 03:31:33,715 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:31:33,715 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918495981] [2022-02-10 03:31:33,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:31:33,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:31:33,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:31:33,981 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:31:33,981 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:31:33,981 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918495981] [2022-02-10 03:31:33,981 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918495981] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:31:33,981 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066956799] [2022-02-10 03:31:33,981 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 03:31:33,981 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:31:33,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:31:33,982 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:31:33,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-02-10 03:31:34,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:31:34,005 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 57 conjunts are in the unsatisfiable core [2022-02-10 03:31:34,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:31:34,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:34,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:34,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:34,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:34,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:34,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:34,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:34,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:34,790 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:31:34,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:34,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:34,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:34,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:34,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:34,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:34,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:34,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:34,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:34,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:34,796 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:31:34,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:34,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:34,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:34,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:34,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:34,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:34,800 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:31:34,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:34,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:34,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:34,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:34,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:34,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:34,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:34,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:34,805 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:31:34,805 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:31:34,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:34,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:34,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:34,807 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:31:34,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:34,808 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 [2022-02-10 03:31:34,827 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 2 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:31:34,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:31:36,144 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-02-10 03:31:36,144 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 [2022-02-10 03:31:37,549 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 12 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:31:37,549 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066956799] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:31:37,549 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:31:37,549 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 17] total 43 [2022-02-10 03:31:37,549 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826693688] [2022-02-10 03:31:37,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:31:37,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-02-10 03:31:37,549 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:31:37,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-02-10 03:31:37,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=279, Invalid=1613, Unknown=0, NotChecked=0, Total=1892 [2022-02-10 03:31:37,550 INFO L87 Difference]: Start difference. First operand 4313 states and 6283 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) [2022-02-10 03:31:43,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:31:43,480 INFO L93 Difference]: Finished difference Result 8315 states and 11865 transitions. [2022-02-10 03:31:43,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2022-02-10 03:31:43,480 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 [2022-02-10 03:31:43,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:31:43,489 INFO L225 Difference]: With dead ends: 8315 [2022-02-10 03:31:43,489 INFO L226 Difference]: Without dead ends: 8278 [2022-02-10 03:31:43,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10335 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=3871, Invalid=24521, Unknown=0, NotChecked=0, Total=28392 [2022-02-10 03:31:43,491 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 311 mSDsluCounter, 2012 mSDsCounter, 0 mSdLazyCounter, 1487 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 1995 SdHoareTripleChecker+Invalid, 2172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 556 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-10 03:31:43,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 1995 Invalid, 2172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1487 Invalid, 0 Unknown, 556 Unchecked, 1.0s Time] [2022-02-10 03:31:43,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8278 states. [2022-02-10 03:31:43,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8278 to 4372. [2022-02-10 03:31:43,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4372 states, 4371 states have (on average 1.4561885152139098) internal successors, (6365), 4371 states have internal predecessors, (6365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:31:43,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4372 states to 4372 states and 6365 transitions. [2022-02-10 03:31:43,549 INFO L78 Accepts]: Start accepts. Automaton has 4372 states and 6365 transitions. Word has length 39 [2022-02-10 03:31:43,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:31:43,549 INFO L470 AbstractCegarLoop]: Abstraction has 4372 states and 6365 transitions. [2022-02-10 03:31:43,549 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) [2022-02-10 03:31:43,549 INFO L276 IsEmpty]: Start isEmpty. Operand 4372 states and 6365 transitions. [2022-02-10 03:31:43,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 03:31:43,553 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:31:43,553 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:31:43,571 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2022-02-10 03:31:43,770 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 [2022-02-10 03:31:43,771 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:31:43,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:31:43,771 INFO L85 PathProgramCache]: Analyzing trace with hash -849025512, now seen corresponding path program 74 times [2022-02-10 03:31:43,771 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:31:43,771 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673705731] [2022-02-10 03:31:43,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:31:43,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:31:43,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:31:44,029 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:31:44,029 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:31:44,029 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673705731] [2022-02-10 03:31:44,029 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673705731] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:31:44,030 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133214676] [2022-02-10 03:31:44,030 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:31:44,030 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:31:44,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:31:44,031 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:31:44,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-02-10 03:31:44,052 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:31:44,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:31:44,053 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 57 conjunts are in the unsatisfiable core [2022-02-10 03:31:44,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:31:44,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:44,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:44,841 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:31:44,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:44,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:44,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:44,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:44,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:44,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:44,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:44,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:44,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:44,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:44,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:44,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:44,847 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:31:44,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:44,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:44,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:44,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:44,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:44,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:44,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:44,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:44,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:44,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:44,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:44,854 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:31:44,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:44,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:44,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:44,856 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:31:44,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:44,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:44,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:44,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:44,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:44,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:44,860 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:31:44,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:44,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:44,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:44,862 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:31:44,862 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 [2022-02-10 03:31:44,881 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 2 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:31:44,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:31:46,142 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-02-10 03:31:46,143 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 [2022-02-10 03:31:47,441 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 3 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:31:47,442 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133214676] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:31:47,442 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:31:47,442 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 17] total 41 [2022-02-10 03:31:47,442 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798816389] [2022-02-10 03:31:47,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:31:47,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-02-10 03:31:47,442 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:31:47,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-02-10 03:31:47,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=1424, Unknown=0, NotChecked=0, Total=1722 [2022-02-10 03:31:47,443 INFO L87 Difference]: Start difference. First operand 4372 states and 6365 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) [2022-02-10 03:31:49,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:31:49,650 INFO L93 Difference]: Finished difference Result 6951 states and 9768 transitions. [2022-02-10 03:31:49,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-02-10 03:31:49,651 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 [2022-02-10 03:31:49,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:31:49,659 INFO L225 Difference]: With dead ends: 6951 [2022-02-10 03:31:49,659 INFO L226 Difference]: Without dead ends: 6651 [2022-02-10 03:31:49,660 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 [2022-02-10 03:31:49,660 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 488 mSDsluCounter, 2259 mSDsCounter, 0 mSdLazyCounter, 1668 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 1601 SdHoareTripleChecker+Invalid, 1904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 107 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-10 03:31:49,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [488 Valid, 1601 Invalid, 1904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1668 Invalid, 0 Unknown, 107 Unchecked, 0.9s Time] [2022-02-10 03:31:49,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6651 states. [2022-02-10 03:31:49,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6651 to 4638. [2022-02-10 03:31:49,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4638 states, 4637 states have (on average 1.456113866724175) internal successors, (6752), 4637 states have internal predecessors, (6752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:31:49,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4638 states to 4638 states and 6752 transitions. [2022-02-10 03:31:49,731 INFO L78 Accepts]: Start accepts. Automaton has 4638 states and 6752 transitions. Word has length 39 [2022-02-10 03:31:49,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:31:49,731 INFO L470 AbstractCegarLoop]: Abstraction has 4638 states and 6752 transitions. [2022-02-10 03:31:49,731 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) [2022-02-10 03:31:49,731 INFO L276 IsEmpty]: Start isEmpty. Operand 4638 states and 6752 transitions. [2022-02-10 03:31:49,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 03:31:49,735 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:31:49,735 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:31:49,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2022-02-10 03:31:49,936 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 [2022-02-10 03:31:49,936 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:31:49,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:31:49,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1566798728, now seen corresponding path program 75 times [2022-02-10 03:31:49,937 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:31:49,937 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237207820] [2022-02-10 03:31:49,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:31:49,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:31:49,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:31:50,210 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:31:50,210 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:31:50,211 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237207820] [2022-02-10 03:31:50,211 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237207820] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:31:50,211 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394965760] [2022-02-10 03:31:50,211 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:31:50,211 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:31:50,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:31:50,212 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:31:50,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-02-10 03:31:50,235 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-02-10 03:31:50,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:31:50,236 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 57 conjunts are in the unsatisfiable core [2022-02-10 03:31:50,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:31:51,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:51,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:51,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:51,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:51,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:51,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:51,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:51,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:51,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:51,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:51,090 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:31:51,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:51,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:51,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:51,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:51,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:51,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:51,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:51,095 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:31:51,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:51,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:51,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:51,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:51,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:51,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:51,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:51,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:51,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:51,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:51,102 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:31:51,102 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:31:51,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:51,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:51,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:51,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:51,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:51,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:51,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:51,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:51,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:51,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:51,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:31:51,110 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:31:51,110 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:31:51,111 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 [2022-02-10 03:31:51,131 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:31:51,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:31:52,495 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-02-10 03:31:52,496 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 [2022-02-10 03:31:54,522 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 3 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:31:54,522 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394965760] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:31:54,522 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:31:54,522 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 17] total 43 [2022-02-10 03:31:54,522 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767064045] [2022-02-10 03:31:54,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:31:54,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-02-10 03:31:54,523 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:31:54,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-02-10 03:31:54,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=1607, Unknown=0, NotChecked=0, Total=1892 [2022-02-10 03:31:54,523 INFO L87 Difference]: Start difference. First operand 4638 states and 6752 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) [2022-02-10 03:31:59,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:31:59,171 INFO L93 Difference]: Finished difference Result 9099 states and 12885 transitions. [2022-02-10 03:31:59,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-02-10 03:31:59,172 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 [2022-02-10 03:31:59,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:31:59,180 INFO L225 Difference]: With dead ends: 9099 [2022-02-10 03:31:59,180 INFO L226 Difference]: Without dead ends: 8877 [2022-02-10 03:31:59,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5149 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1857, Invalid=13893, Unknown=0, NotChecked=0, Total=15750 [2022-02-10 03:31:59,181 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 392 mSDsluCounter, 3361 mSDsCounter, 0 mSdLazyCounter, 2239 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 2541 SdHoareTripleChecker+Invalid, 2836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 2239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 492 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:31:59,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [392 Valid, 2541 Invalid, 2836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 2239 Invalid, 0 Unknown, 492 Unchecked, 1.3s Time] [2022-02-10 03:31:59,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8877 states. [2022-02-10 03:31:59,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8877 to 5587. [2022-02-10 03:31:59,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5587 states, 5586 states have (on average 1.4602577873254565) internal successors, (8157), 5586 states have internal predecessors, (8157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:31:59,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5587 states to 5587 states and 8157 transitions. [2022-02-10 03:31:59,250 INFO L78 Accepts]: Start accepts. Automaton has 5587 states and 8157 transitions. Word has length 39 [2022-02-10 03:31:59,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:31:59,250 INFO L470 AbstractCegarLoop]: Abstraction has 5587 states and 8157 transitions. [2022-02-10 03:31:59,250 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) [2022-02-10 03:31:59,250 INFO L276 IsEmpty]: Start isEmpty. Operand 5587 states and 8157 transitions. [2022-02-10 03:31:59,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 03:31:59,254 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:31:59,254 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:31:59,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2022-02-10 03:31:59,454 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 [2022-02-10 03:31:59,454 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:31:59,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:31:59,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1353694696, now seen corresponding path program 76 times [2022-02-10 03:31:59,455 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:31:59,455 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990732553] [2022-02-10 03:31:59,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:31:59,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:31:59,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:31:59,734 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:31:59,734 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:31:59,734 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990732553] [2022-02-10 03:31:59,734 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990732553] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:31:59,734 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016453850] [2022-02-10 03:31:59,734 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:31:59,734 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:31:59,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:31:59,735 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:31:59,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-02-10 03:31:59,757 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:31:59,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:31:59,758 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 57 conjunts are in the unsatisfiable core [2022-02-10 03:31:59,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:32:00,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:00,590 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:00,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:00,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:00,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:00,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:00,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:00,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:00,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:00,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:00,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:00,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:00,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:00,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:00,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:00,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:00,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:00,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:00,624 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:00,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:00,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:00,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:00,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:00,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:00,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:00,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:00,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:00,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:00,630 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:00,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:00,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:00,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:00,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:00,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:00,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:00,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:00,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:00,635 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:00,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:00,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:00,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:00,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:00,637 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:00,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:00,638 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:00,639 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 [2022-02-10 03:32:00,658 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:32:00,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:32:01,985 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-02-10 03:32:01,985 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 [2022-02-10 03:32:03,632 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 6 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:32:03,632 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016453850] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:32:03,632 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:32:03,632 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 17] total 43 [2022-02-10 03:32:03,632 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988627022] [2022-02-10 03:32:03,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:32:03,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-02-10 03:32:03,632 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:32:03,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-02-10 03:32:03,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=1608, Unknown=0, NotChecked=0, Total=1892 [2022-02-10 03:32:03,633 INFO L87 Difference]: Start difference. First operand 5587 states and 8157 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) [2022-02-10 03:32:06,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:32:06,583 INFO L93 Difference]: Finished difference Result 11802 states and 16972 transitions. [2022-02-10 03:32:06,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-02-10 03:32:06,583 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 [2022-02-10 03:32:06,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:32:06,596 INFO L225 Difference]: With dead ends: 11802 [2022-02-10 03:32:06,596 INFO L226 Difference]: Without dead ends: 11728 [2022-02-10 03:32:06,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3517 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1783, Invalid=9137, Unknown=0, NotChecked=0, Total=10920 [2022-02-10 03:32:06,597 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 267 mSDsluCounter, 1918 mSDsCounter, 0 mSdLazyCounter, 1392 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 1695 SdHoareTripleChecker+Invalid, 1768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 273 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-10 03:32:06,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [267 Valid, 1695 Invalid, 1768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1392 Invalid, 0 Unknown, 273 Unchecked, 0.8s Time] [2022-02-10 03:32:06,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11728 states. [2022-02-10 03:32:06,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11728 to 5773. [2022-02-10 03:32:06,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5773 states, 5772 states have (on average 1.4572072072072073) internal successors, (8411), 5772 states have internal predecessors, (8411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:32:06,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5773 states to 5773 states and 8411 transitions. [2022-02-10 03:32:06,676 INFO L78 Accepts]: Start accepts. Automaton has 5773 states and 8411 transitions. Word has length 39 [2022-02-10 03:32:06,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:32:06,676 INFO L470 AbstractCegarLoop]: Abstraction has 5773 states and 8411 transitions. [2022-02-10 03:32:06,676 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) [2022-02-10 03:32:06,676 INFO L276 IsEmpty]: Start isEmpty. Operand 5773 states and 8411 transitions. [2022-02-10 03:32:06,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 03:32:06,679 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:32:06,679 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:32:06,695 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2022-02-10 03:32:06,880 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 [2022-02-10 03:32:06,880 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:32:06,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:32:06,880 INFO L85 PathProgramCache]: Analyzing trace with hash -936120088, now seen corresponding path program 77 times [2022-02-10 03:32:06,880 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:32:06,880 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915405818] [2022-02-10 03:32:06,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:32:06,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:32:06,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:32:07,199 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:32:07,199 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:32:07,200 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915405818] [2022-02-10 03:32:07,200 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915405818] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:32:07,200 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11842100] [2022-02-10 03:32:07,200 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 03:32:07,200 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:32:07,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:32:07,201 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:32:07,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-02-10 03:32:07,226 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-10 03:32:07,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:32:07,227 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 58 conjunts are in the unsatisfiable core [2022-02-10 03:32:07,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:32:08,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:08,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:08,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:08,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:08,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:08,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:08,051 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:08,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:08,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:08,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:08,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:08,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:08,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:08,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:08,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:08,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:08,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:08,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:08,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:08,058 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:08,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:08,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:08,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:08,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:08,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:08,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:08,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:08,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:08,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:08,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:08,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:08,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:08,065 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:08,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:08,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:08,066 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:08,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:08,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:08,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:08,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:08,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:08,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:08,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:08,070 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:08,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:08,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:08,071 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:08,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:08,072 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:08,073 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 [2022-02-10 03:32:08,101 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:32:08,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:32:09,307 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:09,308 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:09,309 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:09,309 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:09,309 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:09,310 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:09,310 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:09,310 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:09,311 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:09,312 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:09,312 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:09,314 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:09,314 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:09,315 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:09,315 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:09,315 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:09,317 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:09,317 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:09,317 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:09,318 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:09,318 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:09,320 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:09,321 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:09,321 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:09,322 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:09,322 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:09,324 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:09,325 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:09,325 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:09,325 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:09,326 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:09,326 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:09,327 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:09,328 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:09,328 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:09,329 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:09,330 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:09,331 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:09,331 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:09,331 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:09,332 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:09,332 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:09,332 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:09,332 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:09,333 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:09,333 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:09,335 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:09,335 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:09,336 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:09,337 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:09,337 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:09,337 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:09,337 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:09,338 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:09,338 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:09,339 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:09,339 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:09,341 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:09,341 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:09,341 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:09,342 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:09,342 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:09,343 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:09,445 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:32:09,445 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 [2022-02-10 03:32:10,304 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:32:10,305 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11842100] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:32:10,305 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:32:10,305 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-10 03:32:10,305 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126681311] [2022-02-10 03:32:10,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:32:10,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-10 03:32:10,305 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:32:10,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-10 03:32:10,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=438, Invalid=1818, Unknown=0, NotChecked=0, Total=2256 [2022-02-10 03:32:10,306 INFO L87 Difference]: Start difference. First operand 5773 states and 8411 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) [2022-02-10 03:32:20,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:32:20,391 INFO L93 Difference]: Finished difference Result 13221 states and 18915 transitions. [2022-02-10 03:32:20,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2022-02-10 03:32:20,391 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 [2022-02-10 03:32:20,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:32:20,410 INFO L225 Difference]: With dead ends: 13221 [2022-02-10 03:32:20,410 INFO L226 Difference]: Without dead ends: 12906 [2022-02-10 03:32:20,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 55 SyntacticMatches, 8 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8480 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=3601, Invalid=23459, Unknown=0, NotChecked=0, Total=27060 [2022-02-10 03:32:20,412 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 782 mSDsluCounter, 2896 mSDsCounter, 0 mSdLazyCounter, 1690 mSolverCounterSat, 289 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 2123 SdHoareTripleChecker+Invalid, 2875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 289 IncrementalHoareTripleChecker+Valid, 1690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 896 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:32:20,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [782 Valid, 2123 Invalid, 2875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [289 Valid, 1690 Invalid, 0 Unknown, 896 Unchecked, 1.3s Time] [2022-02-10 03:32:20,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12906 states. [2022-02-10 03:32:20,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12906 to 6581. [2022-02-10 03:32:20,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6581 states, 6580 states have (on average 1.446808510638298) internal successors, (9520), 6580 states have internal predecessors, (9520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:32:20,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6581 states to 6581 states and 9520 transitions. [2022-02-10 03:32:20,562 INFO L78 Accepts]: Start accepts. Automaton has 6581 states and 9520 transitions. Word has length 39 [2022-02-10 03:32:20,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:32:20,562 INFO L470 AbstractCegarLoop]: Abstraction has 6581 states and 9520 transitions. [2022-02-10 03:32:20,562 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) [2022-02-10 03:32:20,562 INFO L276 IsEmpty]: Start isEmpty. Operand 6581 states and 9520 transitions. [2022-02-10 03:32:20,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 03:32:20,568 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:32:20,568 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:32:20,589 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2022-02-10 03:32:20,768 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 [2022-02-10 03:32:20,769 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:32:20,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:32:20,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1939948632, now seen corresponding path program 78 times [2022-02-10 03:32:20,769 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:32:20,769 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780004746] [2022-02-10 03:32:20,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:32:20,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:32:20,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:32:21,073 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:32:21,074 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:32:21,074 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780004746] [2022-02-10 03:32:21,074 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780004746] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:32:21,074 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011315707] [2022-02-10 03:32:21,074 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 03:32:21,074 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:32:21,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:32:21,075 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:32:21,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-02-10 03:32:21,099 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2022-02-10 03:32:21,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:32:21,100 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 59 conjunts are in the unsatisfiable core [2022-02-10 03:32:21,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:32:21,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:21,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:21,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:21,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:21,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:21,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:21,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:21,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:21,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:21,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:21,920 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:21,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:21,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:21,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:21,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:21,922 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:21,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:21,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:21,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:21,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:21,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:21,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:21,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:21,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:21,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:21,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:21,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:21,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:21,930 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:21,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:21,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:21,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:21,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:21,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:21,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:21,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:21,935 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:21,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:21,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:21,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:21,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:21,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:21,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:21,938 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:21,939 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:21,939 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 [2022-02-10 03:32:21,957 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 2 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:32:21,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:32:23,220 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-02-10 03:32:23,220 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 [2022-02-10 03:32:25,021 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 6 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:32:25,021 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011315707] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:32:25,021 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:32:25,021 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 17] total 42 [2022-02-10 03:32:25,021 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961017085] [2022-02-10 03:32:25,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:32:25,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-02-10 03:32:25,022 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:32:25,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-02-10 03:32:25,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=1497, Unknown=0, NotChecked=0, Total=1806 [2022-02-10 03:32:25,022 INFO L87 Difference]: Start difference. First operand 6581 states and 9520 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) [2022-02-10 03:32:27,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:32:27,227 INFO L93 Difference]: Finished difference Result 10069 states and 14245 transitions. [2022-02-10 03:32:27,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-02-10 03:32:27,228 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 [2022-02-10 03:32:27,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:32:27,241 INFO L225 Difference]: With dead ends: 10069 [2022-02-10 03:32:27,241 INFO L226 Difference]: Without dead ends: 9778 [2022-02-10 03:32:27,242 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 [2022-02-10 03:32:27,242 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 580 mSDsluCounter, 2284 mSDsCounter, 0 mSdLazyCounter, 1584 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 1575 SdHoareTripleChecker+Invalid, 1867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 1584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 131 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-10 03:32:27,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [580 Valid, 1575 Invalid, 1867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 1584 Invalid, 0 Unknown, 131 Unchecked, 0.8s Time] [2022-02-10 03:32:27,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9778 states. [2022-02-10 03:32:27,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9778 to 6843. [2022-02-10 03:32:27,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6843 states, 6842 states have (on average 1.45016077170418) internal successors, (9922), 6842 states have internal predecessors, (9922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:32:27,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6843 states to 6843 states and 9922 transitions. [2022-02-10 03:32:27,350 INFO L78 Accepts]: Start accepts. Automaton has 6843 states and 9922 transitions. Word has length 39 [2022-02-10 03:32:27,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:32:27,350 INFO L470 AbstractCegarLoop]: Abstraction has 6843 states and 9922 transitions. [2022-02-10 03:32:27,350 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) [2022-02-10 03:32:27,350 INFO L276 IsEmpty]: Start isEmpty. Operand 6843 states and 9922 transitions. [2022-02-10 03:32:27,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 03:32:27,355 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:32:27,355 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:32:27,372 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2022-02-10 03:32:27,556 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 [2022-02-10 03:32:27,556 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:32:27,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:32:27,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1435279448, now seen corresponding path program 79 times [2022-02-10 03:32:27,556 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:32:27,556 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715420097] [2022-02-10 03:32:27,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:32:27,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:32:27,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:32:27,860 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:32:27,861 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:32:27,861 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715420097] [2022-02-10 03:32:27,861 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715420097] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:32:27,861 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121247791] [2022-02-10 03:32:27,861 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 03:32:27,861 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:32:27,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:32:27,862 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:32:27,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-02-10 03:32:27,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:32:27,885 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 57 conjunts are in the unsatisfiable core [2022-02-10 03:32:27,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:32:28,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:28,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:28,709 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:28,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:28,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:28,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:28,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:28,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:28,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:28,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:28,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:28,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:28,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:28,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:28,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:28,716 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:28,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:28,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:28,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:28,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:28,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:28,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:28,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:28,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:28,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:28,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:28,722 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:28,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:28,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:28,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:28,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:28,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:28,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:28,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:28,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:28,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:28,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:28,728 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:28,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:28,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:28,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:28,730 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:28,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:28,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:28,731 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:28,731 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 [2022-02-10 03:32:28,750 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:32:28,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:32:30,096 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-02-10 03:32:30,097 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 [2022-02-10 03:32:31,471 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 6 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:32:31,471 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121247791] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:32:31,471 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:32:31,471 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 44 [2022-02-10 03:32:31,471 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849796484] [2022-02-10 03:32:31,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:32:31,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-02-10 03:32:31,471 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:32:31,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-02-10 03:32:31,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=1678, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 03:32:31,472 INFO L87 Difference]: Start difference. First operand 6843 states and 9922 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) [2022-02-10 03:32:33,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:32:33,380 INFO L93 Difference]: Finished difference Result 9270 states and 13356 transitions. [2022-02-10 03:32:33,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-02-10 03:32:33,380 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 [2022-02-10 03:32:33,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:32:33,391 INFO L225 Difference]: With dead ends: 9270 [2022-02-10 03:32:33,391 INFO L226 Difference]: Without dead ends: 9245 [2022-02-10 03:32:33,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1862 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1038, Invalid=5442, Unknown=0, NotChecked=0, Total=6480 [2022-02-10 03:32:33,392 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 263 mSDsluCounter, 1160 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 1182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 262 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 03:32:33,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 1087 Invalid, 1182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 817 Invalid, 0 Unknown, 262 Unchecked, 0.5s Time] [2022-02-10 03:32:33,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9245 states. [2022-02-10 03:32:33,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9245 to 6921. [2022-02-10 03:32:33,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6921 states, 6920 states have (on average 1.448843930635838) internal successors, (10026), 6920 states have internal predecessors, (10026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:32:33,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6921 states to 6921 states and 10026 transitions. [2022-02-10 03:32:33,482 INFO L78 Accepts]: Start accepts. Automaton has 6921 states and 10026 transitions. Word has length 39 [2022-02-10 03:32:33,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:32:33,482 INFO L470 AbstractCegarLoop]: Abstraction has 6921 states and 10026 transitions. [2022-02-10 03:32:33,482 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) [2022-02-10 03:32:33,482 INFO L276 IsEmpty]: Start isEmpty. Operand 6921 states and 10026 transitions. [2022-02-10 03:32:33,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 03:32:33,486 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:32:33,486 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:32:33,502 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2022-02-10 03:32:33,701 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 [2022-02-10 03:32:33,701 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:32:33,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:32:33,702 INFO L85 PathProgramCache]: Analyzing trace with hash 828657448, now seen corresponding path program 80 times [2022-02-10 03:32:33,702 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:32:33,702 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217033992] [2022-02-10 03:32:33,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:32:33,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:32:33,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:32:33,994 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:32:33,994 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:32:33,994 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217033992] [2022-02-10 03:32:33,994 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217033992] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:32:33,994 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021512111] [2022-02-10 03:32:33,994 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:32:33,994 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:32:33,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:32:33,995 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:32:33,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-02-10 03:32:34,017 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:32:34,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:32:34,018 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 57 conjunts are in the unsatisfiable core [2022-02-10 03:32:34,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:32:34,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:34,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:34,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:34,836 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:34,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:34,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:34,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:34,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:34,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:34,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:34,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:34,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:34,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:34,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:34,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:34,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:34,843 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:34,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:34,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:34,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:34,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:34,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:34,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:34,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:34,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:34,848 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:34,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:34,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:34,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:34,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:34,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:34,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:34,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:34,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:34,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:34,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:34,853 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:34,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:34,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:34,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:34,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:34,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:34,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:34,857 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:34,857 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:34,858 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 [2022-02-10 03:32:34,877 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 2 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:32:34,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:32:36,159 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-02-10 03:32:36,159 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 [2022-02-10 03:32:37,515 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 12 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:32:37,515 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021512111] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:32:37,515 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:32:37,515 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 17] total 42 [2022-02-10 03:32:37,515 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999017328] [2022-02-10 03:32:37,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:32:37,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-02-10 03:32:37,516 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:32:37,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-02-10 03:32:37,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=1498, Unknown=0, NotChecked=0, Total=1806 [2022-02-10 03:32:37,516 INFO L87 Difference]: Start difference. First operand 6921 states and 10026 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) [2022-02-10 03:32:39,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:32:39,630 INFO L93 Difference]: Finished difference Result 9311 states and 13215 transitions. [2022-02-10 03:32:39,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-02-10 03:32:39,630 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 [2022-02-10 03:32:39,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:32:39,639 INFO L225 Difference]: With dead ends: 9311 [2022-02-10 03:32:39,639 INFO L226 Difference]: Without dead ends: 9041 [2022-02-10 03:32:39,640 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 51 SyntacticMatches, 3 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1569 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=789, Invalid=4467, Unknown=0, NotChecked=0, Total=5256 [2022-02-10 03:32:39,640 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 477 mSDsluCounter, 2593 mSDsCounter, 0 mSdLazyCounter, 1839 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 1789 SdHoareTripleChecker+Invalid, 2107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 147 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-10 03:32:39,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [477 Valid, 1789 Invalid, 2107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1839 Invalid, 0 Unknown, 147 Unchecked, 1.0s Time] [2022-02-10 03:32:39,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9041 states. [2022-02-10 03:32:39,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9041 to 7573. [2022-02-10 03:32:39,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7573 states, 7572 states have (on average 1.446513470681458) internal successors, (10953), 7572 states have internal predecessors, (10953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:32:39,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7573 states to 7573 states and 10953 transitions. [2022-02-10 03:32:39,737 INFO L78 Accepts]: Start accepts. Automaton has 7573 states and 10953 transitions. Word has length 39 [2022-02-10 03:32:39,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:32:39,737 INFO L470 AbstractCegarLoop]: Abstraction has 7573 states and 10953 transitions. [2022-02-10 03:32:39,737 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) [2022-02-10 03:32:39,737 INFO L276 IsEmpty]: Start isEmpty. Operand 7573 states and 10953 transitions. [2022-02-10 03:32:39,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 03:32:39,742 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:32:39,742 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:32:39,758 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2022-02-10 03:32:39,942 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 [2022-02-10 03:32:39,943 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:32:39,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:32:39,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1953217832, now seen corresponding path program 81 times [2022-02-10 03:32:39,943 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:32:39,943 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375315098] [2022-02-10 03:32:39,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:32:39,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:32:39,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:32:40,263 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:32:40,264 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:32:40,264 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375315098] [2022-02-10 03:32:40,264 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375315098] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:32:40,264 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487062626] [2022-02-10 03:32:40,264 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:32:40,264 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:32:40,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:32:40,265 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:32:40,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-02-10 03:32:40,290 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-02-10 03:32:40,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:32:40,291 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 57 conjunts are in the unsatisfiable core [2022-02-10 03:32:40,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:32:41,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:41,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:41,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:41,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:41,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:41,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:41,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:41,167 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:41,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:41,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:41,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:41,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:41,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:41,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:41,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:41,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:41,173 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:41,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:41,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:41,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:41,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:41,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:41,176 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:41,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:41,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:41,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:41,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:41,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:41,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:41,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:41,188 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:41,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:41,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:41,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:41,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:41,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:41,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:41,192 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:41,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:41,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:41,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:41,194 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:41,195 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 [2022-02-10 03:32:41,214 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:32:41,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:32:42,560 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-02-10 03:32:42,561 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 [2022-02-10 03:32:43,718 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 12 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:32:43,718 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487062626] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:32:43,718 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:32:43,719 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 17] total 43 [2022-02-10 03:32:43,719 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102228264] [2022-02-10 03:32:43,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:32:43,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-02-10 03:32:43,719 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:32:43,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-02-10 03:32:43,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=1587, Unknown=0, NotChecked=0, Total=1892 [2022-02-10 03:32:43,719 INFO L87 Difference]: Start difference. First operand 7573 states and 10953 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) [2022-02-10 03:32:46,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:32:46,155 INFO L93 Difference]: Finished difference Result 11933 states and 16986 transitions. [2022-02-10 03:32:46,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-02-10 03:32:46,155 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 [2022-02-10 03:32:46,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:32:46,170 INFO L225 Difference]: With dead ends: 11933 [2022-02-10 03:32:46,170 INFO L226 Difference]: Without dead ends: 11798 [2022-02-10 03:32:46,171 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 52 SyntacticMatches, 3 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2420 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1251, Invalid=6939, Unknown=0, NotChecked=0, Total=8190 [2022-02-10 03:32:46,171 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 253 mSDsluCounter, 1749 mSDsCounter, 0 mSdLazyCounter, 1101 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 1440 SdHoareTripleChecker+Invalid, 1577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 378 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 03:32:46,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [253 Valid, 1440 Invalid, 1577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1101 Invalid, 0 Unknown, 378 Unchecked, 0.6s Time] [2022-02-10 03:32:46,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11798 states. [2022-02-10 03:32:46,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11798 to 7458. [2022-02-10 03:32:46,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7458 states, 7457 states have (on average 1.447901300791203) internal successors, (10797), 7457 states have internal predecessors, (10797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:32:46,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7458 states to 7458 states and 10797 transitions. [2022-02-10 03:32:46,300 INFO L78 Accepts]: Start accepts. Automaton has 7458 states and 10797 transitions. Word has length 39 [2022-02-10 03:32:46,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:32:46,300 INFO L470 AbstractCegarLoop]: Abstraction has 7458 states and 10797 transitions. [2022-02-10 03:32:46,300 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) [2022-02-10 03:32:46,300 INFO L276 IsEmpty]: Start isEmpty. Operand 7458 states and 10797 transitions. [2022-02-10 03:32:46,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 03:32:46,305 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:32:46,305 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:32:46,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2022-02-10 03:32:46,520 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 [2022-02-10 03:32:46,521 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:32:46,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:32:46,521 INFO L85 PathProgramCache]: Analyzing trace with hash 323988264, now seen corresponding path program 82 times [2022-02-10 03:32:46,521 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:32:46,521 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159590102] [2022-02-10 03:32:46,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:32:46,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:32:46,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:32:46,861 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:32:46,861 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:32:46,861 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159590102] [2022-02-10 03:32:46,861 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159590102] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:32:46,861 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985188937] [2022-02-10 03:32:46,861 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:32:46,861 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:32:46,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:32:46,862 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:32:46,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-02-10 03:32:46,884 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:32:46,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:32:46,885 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 57 conjunts are in the unsatisfiable core [2022-02-10 03:32:46,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:32:47,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:47,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:47,725 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:47,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:47,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:47,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:47,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:47,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:47,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:47,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:47,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:47,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:47,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:47,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:47,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:47,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:47,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:47,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:47,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:47,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:47,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:47,736 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:47,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:47,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:47,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:47,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:47,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:47,739 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:47,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:47,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:47,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:47,742 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:47,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:47,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:47,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:47,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:47,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:47,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:47,746 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:47,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:47,747 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:47,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:47,748 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 [2022-02-10 03:32:47,767 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:32:47,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:32:49,092 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-02-10 03:32:49,092 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 [2022-02-10 03:32:50,574 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 12 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:32:50,575 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985188937] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:32:50,575 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:32:50,575 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 44 [2022-02-10 03:32:50,575 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989933494] [2022-02-10 03:32:50,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:32:50,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-02-10 03:32:50,575 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:32:50,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-02-10 03:32:50,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=1675, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 03:32:50,576 INFO L87 Difference]: Start difference. First operand 7458 states and 10797 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) [2022-02-10 03:32:53,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:32:53,758 INFO L93 Difference]: Finished difference Result 10285 states and 14750 transitions. [2022-02-10 03:32:53,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-02-10 03:32:53,758 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 [2022-02-10 03:32:53,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:32:53,771 INFO L225 Difference]: With dead ends: 10285 [2022-02-10 03:32:53,771 INFO L226 Difference]: Without dead ends: 10182 [2022-02-10 03:32:53,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3887 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1760, Invalid=10672, Unknown=0, NotChecked=0, Total=12432 [2022-02-10 03:32:53,772 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 277 mSDsluCounter, 1910 mSDsCounter, 0 mSdLazyCounter, 1425 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 1686 SdHoareTripleChecker+Invalid, 1899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 372 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-10 03:32:53,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 1686 Invalid, 1899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1425 Invalid, 0 Unknown, 372 Unchecked, 0.8s Time] [2022-02-10 03:32:53,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10182 states. [2022-02-10 03:32:53,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10182 to 7743. [2022-02-10 03:32:53,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7743 states, 7742 states have (on average 1.4479462671144407) internal successors, (11210), 7742 states have internal predecessors, (11210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:32:53,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7743 states to 7743 states and 11210 transitions. [2022-02-10 03:32:53,900 INFO L78 Accepts]: Start accepts. Automaton has 7743 states and 11210 transitions. Word has length 39 [2022-02-10 03:32:53,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:32:53,900 INFO L470 AbstractCegarLoop]: Abstraction has 7743 states and 11210 transitions. [2022-02-10 03:32:53,900 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) [2022-02-10 03:32:53,900 INFO L276 IsEmpty]: Start isEmpty. Operand 7743 states and 11210 transitions. [2022-02-10 03:32:53,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 03:32:53,906 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:32:53,906 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:32:53,923 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Ended with exit code 0 [2022-02-10 03:32:54,106 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 [2022-02-10 03:32:54,106 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:32:54,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:32:54,107 INFO L85 PathProgramCache]: Analyzing trace with hash -16994664, now seen corresponding path program 83 times [2022-02-10 03:32:54,107 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:32:54,107 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890952260] [2022-02-10 03:32:54,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:32:54,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:32:54,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:32:54,444 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:32:54,444 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:32:54,444 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890952260] [2022-02-10 03:32:54,444 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890952260] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:32:54,444 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736402616] [2022-02-10 03:32:54,444 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 03:32:54,444 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:32:54,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:32:54,456 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:32:54,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-02-10 03:32:54,481 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-02-10 03:32:54,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:32:54,482 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 57 conjunts are in the unsatisfiable core [2022-02-10 03:32:54,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:32:55,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:55,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:55,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:55,318 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:55,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:55,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:55,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:55,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:55,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:55,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:55,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:55,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:55,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:55,324 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:55,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:55,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:55,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:55,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:55,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:55,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:55,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:55,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:55,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:55,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:55,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:55,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:55,331 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:55,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:55,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:55,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:55,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:55,334 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:55,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:55,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:55,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:55,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:55,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:55,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:55,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:55,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:55,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:55,339 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:55,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:32:55,340 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:32:55,341 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 [2022-02-10 03:32:55,360 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:32:55,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:32:56,750 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-02-10 03:32:56,751 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 [2022-02-10 03:32:57,801 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 18 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:32:57,801 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736402616] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:32:57,801 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:32:57,801 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 44 [2022-02-10 03:32:57,801 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157936136] [2022-02-10 03:32:57,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:32:57,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-02-10 03:32:57,802 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:32:57,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-02-10 03:32:57,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=312, Invalid=1668, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 03:32:57,802 INFO L87 Difference]: Start difference. First operand 7743 states and 11210 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) [2022-02-10 03:33:00,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:33:00,034 INFO L93 Difference]: Finished difference Result 9304 states and 13357 transitions. [2022-02-10 03:33:00,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-02-10 03:33:00,034 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 [2022-02-10 03:33:00,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:33:00,073 INFO L225 Difference]: With dead ends: 9304 [2022-02-10 03:33:00,073 INFO L226 Difference]: Without dead ends: 9286 [2022-02-10 03:33:00,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2714 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1254, Invalid=8058, Unknown=0, NotChecked=0, Total=9312 [2022-02-10 03:33:00,074 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 217 mSDsluCounter, 1327 mSDsCounter, 0 mSdLazyCounter, 866 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 1342 SdHoareTripleChecker+Invalid, 1323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 382 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 03:33:00,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [217 Valid, 1342 Invalid, 1323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 866 Invalid, 0 Unknown, 382 Unchecked, 0.5s Time] [2022-02-10 03:33:00,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9286 states. [2022-02-10 03:33:00,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9286 to 7905. [2022-02-10 03:33:00,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7905 states, 7904 states have (on average 1.4476214574898785) internal successors, (11442), 7904 states have internal predecessors, (11442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:33:00,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7905 states to 7905 states and 11442 transitions. [2022-02-10 03:33:00,177 INFO L78 Accepts]: Start accepts. Automaton has 7905 states and 11442 transitions. Word has length 39 [2022-02-10 03:33:00,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:33:00,178 INFO L470 AbstractCegarLoop]: Abstraction has 7905 states and 11442 transitions. [2022-02-10 03:33:00,178 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) [2022-02-10 03:33:00,178 INFO L276 IsEmpty]: Start isEmpty. Operand 7905 states and 11442 transitions. [2022-02-10 03:33:00,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 03:33:00,184 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:33:00,184 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:33:00,201 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2022-02-10 03:33:00,384 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 [2022-02-10 03:33:00,385 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:33:00,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:33:00,386 INFO L85 PathProgramCache]: Analyzing trace with hash 2059249544, now seen corresponding path program 84 times [2022-02-10 03:33:00,386 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:33:00,386 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127234484] [2022-02-10 03:33:00,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:33:00,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:33:00,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:33:00,716 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:33:00,716 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:33:00,716 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127234484] [2022-02-10 03:33:00,716 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127234484] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:33:00,716 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921185355] [2022-02-10 03:33:00,716 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 03:33:00,716 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:33:00,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:33:00,717 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:33:00,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2022-02-10 03:33:00,741 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-02-10 03:33:00,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:33:00,742 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 59 conjunts are in the unsatisfiable core [2022-02-10 03:33:00,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:33:01,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:01,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:01,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:01,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:01,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:01,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:01,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:01,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:01,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:01,533 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:01,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:01,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:01,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:01,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:01,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:01,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:01,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:01,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:01,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:01,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:01,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:01,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:01,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:01,540 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:01,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:01,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:01,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:01,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:01,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:01,543 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:01,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:01,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:01,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:01,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:01,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:01,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:01,547 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:01,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:01,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:01,549 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:01,550 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 124 treesize of output 44 [2022-02-10 03:33:01,569 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:33:01,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:33:02,941 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-02-10 03:33:02,942 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 [2022-02-10 03:33:04,180 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 3 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:33:04,180 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921185355] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:33:04,180 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:33:04,180 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 43 [2022-02-10 03:33:04,180 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182333686] [2022-02-10 03:33:04,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:33:04,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-02-10 03:33:04,181 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:33:04,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-02-10 03:33:04,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=294, Invalid=1598, Unknown=0, NotChecked=0, Total=1892 [2022-02-10 03:33:04,181 INFO L87 Difference]: Start difference. First operand 7905 states and 11442 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) [2022-02-10 03:33:06,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:33:06,267 INFO L93 Difference]: Finished difference Result 12670 states and 18350 transitions. [2022-02-10 03:33:06,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-02-10 03:33:06,267 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 [2022-02-10 03:33:06,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:33:06,285 INFO L225 Difference]: With dead ends: 12670 [2022-02-10 03:33:06,285 INFO L226 Difference]: Without dead ends: 12465 [2022-02-10 03:33:06,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 49 SyntacticMatches, 3 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1812 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=993, Invalid=5649, Unknown=0, NotChecked=0, Total=6642 [2022-02-10 03:33:06,286 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 444 mSDsluCounter, 2025 mSDsCounter, 0 mSdLazyCounter, 1178 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 1528 SdHoareTripleChecker+Invalid, 1820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 1178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 501 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 03:33:06,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [444 Valid, 1528 Invalid, 1820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 1178 Invalid, 0 Unknown, 501 Unchecked, 0.7s Time] [2022-02-10 03:33:06,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12465 states. [2022-02-10 03:33:06,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12465 to 6379. [2022-02-10 03:33:06,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6379 states, 6378 states have (on average 1.4217623079335215) internal successors, (9068), 6378 states have internal predecessors, (9068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:33:06,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6379 states to 6379 states and 9068 transitions. [2022-02-10 03:33:06,402 INFO L78 Accepts]: Start accepts. Automaton has 6379 states and 9068 transitions. Word has length 39 [2022-02-10 03:33:06,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:33:06,402 INFO L470 AbstractCegarLoop]: Abstraction has 6379 states and 9068 transitions. [2022-02-10 03:33:06,402 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) [2022-02-10 03:33:06,402 INFO L276 IsEmpty]: Start isEmpty. Operand 6379 states and 9068 transitions. [2022-02-10 03:33:06,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 03:33:06,406 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:33:06,406 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:33:06,422 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Ended with exit code 0 [2022-02-10 03:33:06,607 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 [2022-02-10 03:33:06,607 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:33:06,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:33:06,607 INFO L85 PathProgramCache]: Analyzing trace with hash 947958360, now seen corresponding path program 85 times [2022-02-10 03:33:06,607 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:33:06,607 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646466728] [2022-02-10 03:33:06,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:33:06,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:33:06,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:33:06,935 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:33:06,936 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:33:06,936 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646466728] [2022-02-10 03:33:06,936 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646466728] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:33:06,936 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403433812] [2022-02-10 03:33:06,936 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 03:33:06,936 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:33:06,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:33:06,937 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:33:06,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2022-02-10 03:33:06,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:33:06,961 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 57 conjunts are in the unsatisfiable core [2022-02-10 03:33:06,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:33:07,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:07,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:07,731 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:07,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:07,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:07,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:07,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:07,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:07,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:07,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:07,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:07,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:07,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:07,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:07,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:07,749 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:07,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:07,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:07,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:07,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:07,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:07,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:07,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:07,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:07,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:07,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:07,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:07,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:07,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:07,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:07,758 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:07,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:07,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:07,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:07,760 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:07,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:07,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:07,761 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:07,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:07,763 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 [2022-02-10 03:33:07,785 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:33:07,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:33:09,058 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-02-10 03:33:09,059 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 [2022-02-10 03:33:10,407 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 6 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:33:10,407 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403433812] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:33:10,407 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:33:10,407 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 43 [2022-02-10 03:33:10,408 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252002519] [2022-02-10 03:33:10,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:33:10,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-02-10 03:33:10,408 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:33:10,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-02-10 03:33:10,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=1593, Unknown=0, NotChecked=0, Total=1892 [2022-02-10 03:33:10,408 INFO L87 Difference]: Start difference. First operand 6379 states and 9068 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) [2022-02-10 03:33:14,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:33:14,145 INFO L93 Difference]: Finished difference Result 10760 states and 15230 transitions. [2022-02-10 03:33:14,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-02-10 03:33:14,145 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 [2022-02-10 03:33:14,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:33:14,159 INFO L225 Difference]: With dead ends: 10760 [2022-02-10 03:33:14,159 INFO L226 Difference]: Without dead ends: 10650 [2022-02-10 03:33:14,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 49 SyntacticMatches, 3 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4264 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=2094, Invalid=11712, Unknown=0, NotChecked=0, Total=13806 [2022-02-10 03:33:14,161 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 357 mSDsluCounter, 2018 mSDsCounter, 0 mSdLazyCounter, 1389 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 1793 SdHoareTripleChecker+Invalid, 2058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 1389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 541 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-10 03:33:14,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [357 Valid, 1793 Invalid, 2058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 1389 Invalid, 0 Unknown, 541 Unchecked, 0.8s Time] [2022-02-10 03:33:14,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10650 states. [2022-02-10 03:33:14,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10650 to 5952. [2022-02-10 03:33:14,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5952 states, 5951 states have (on average 1.4246345152075282) internal successors, (8478), 5951 states have internal predecessors, (8478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:33:14,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5952 states to 5952 states and 8478 transitions. [2022-02-10 03:33:14,257 INFO L78 Accepts]: Start accepts. Automaton has 5952 states and 8478 transitions. Word has length 39 [2022-02-10 03:33:14,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:33:14,257 INFO L470 AbstractCegarLoop]: Abstraction has 5952 states and 8478 transitions. [2022-02-10 03:33:14,258 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) [2022-02-10 03:33:14,258 INFO L276 IsEmpty]: Start isEmpty. Operand 5952 states and 8478 transitions. [2022-02-10 03:33:14,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 03:33:14,261 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:33:14,261 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:33:14,278 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Ended with exit code 0 [2022-02-10 03:33:14,462 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 [2022-02-10 03:33:14,462 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:33:14,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:33:14,462 INFO L85 PathProgramCache]: Analyzing trace with hash 606975432, now seen corresponding path program 86 times [2022-02-10 03:33:14,462 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:33:14,463 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755066756] [2022-02-10 03:33:14,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:33:14,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:33:14,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:33:14,798 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:33:14,798 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:33:14,798 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755066756] [2022-02-10 03:33:14,798 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755066756] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:33:14,798 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852585978] [2022-02-10 03:33:14,798 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:33:14,798 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:33:14,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:33:14,799 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:33:14,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2022-02-10 03:33:14,822 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:33:14,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:33:14,823 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 57 conjunts are in the unsatisfiable core [2022-02-10 03:33:14,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:33:15,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:15,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:15,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:15,594 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:15,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:15,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:15,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:15,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:15,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:15,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:15,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:15,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:15,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:15,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:15,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:15,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:15,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:15,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:15,602 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:15,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:15,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:15,603 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:15,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:15,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:15,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:15,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:15,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:15,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:15,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:15,607 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:15,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:15,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:15,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:15,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:15,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:15,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:15,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:15,611 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:15,612 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 [2022-02-10 03:33:15,630 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:33:15,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:33:16,901 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-02-10 03:33:16,902 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 [2022-02-10 03:33:18,188 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 12 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:33:18,188 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852585978] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:33:18,188 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:33:18,188 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 43 [2022-02-10 03:33:18,188 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744381434] [2022-02-10 03:33:18,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:33:18,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-02-10 03:33:18,188 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:33:18,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-02-10 03:33:18,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=1589, Unknown=0, NotChecked=0, Total=1892 [2022-02-10 03:33:18,189 INFO L87 Difference]: Start difference. First operand 5952 states and 8478 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) [2022-02-10 03:33:21,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:33:21,545 INFO L93 Difference]: Finished difference Result 10072 states and 14227 transitions. [2022-02-10 03:33:21,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-02-10 03:33:21,546 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 [2022-02-10 03:33:21,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:33:21,560 INFO L225 Difference]: With dead ends: 10072 [2022-02-10 03:33:21,560 INFO L226 Difference]: Without dead ends: 10054 [2022-02-10 03:33:21,562 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 48 SyntacticMatches, 3 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4035 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=2036, Invalid=10846, Unknown=0, NotChecked=0, Total=12882 [2022-02-10 03:33:21,562 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 286 mSDsluCounter, 1646 mSDsCounter, 0 mSdLazyCounter, 1261 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 1659 SdHoareTripleChecker+Invalid, 1833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 476 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-10 03:33:21,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 1659 Invalid, 1833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1261 Invalid, 0 Unknown, 476 Unchecked, 0.8s Time] [2022-02-10 03:33:21,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10054 states. [2022-02-10 03:33:21,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10054 to 5905. [2022-02-10 03:33:21,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5905 states, 5904 states have (on average 1.4247967479674797) internal successors, (8412), 5904 states have internal predecessors, (8412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:33:21,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5905 states to 5905 states and 8412 transitions. [2022-02-10 03:33:21,666 INFO L78 Accepts]: Start accepts. Automaton has 5905 states and 8412 transitions. Word has length 39 [2022-02-10 03:33:21,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:33:21,666 INFO L470 AbstractCegarLoop]: Abstraction has 5905 states and 8412 transitions. [2022-02-10 03:33:21,666 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) [2022-02-10 03:33:21,666 INFO L276 IsEmpty]: Start isEmpty. Operand 5905 states and 8412 transitions. [2022-02-10 03:33:21,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 03:33:21,671 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:33:21,671 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:33:21,687 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Ended with exit code 0 [2022-02-10 03:33:21,871 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 [2022-02-10 03:33:21,871 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:33:21,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:33:21,872 INFO L85 PathProgramCache]: Analyzing trace with hash -160601880, now seen corresponding path program 87 times [2022-02-10 03:33:21,872 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:33:21,872 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051654149] [2022-02-10 03:33:21,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:33:21,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:33:21,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:33:22,179 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:33:22,179 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:33:22,179 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051654149] [2022-02-10 03:33:22,179 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051654149] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:33:22,179 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548326564] [2022-02-10 03:33:22,179 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:33:22,179 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:33:22,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:33:22,180 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:33:22,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2022-02-10 03:33:22,205 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-02-10 03:33:22,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:33:22,206 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 57 conjunts are in the unsatisfiable core [2022-02-10 03:33:22,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:33:22,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:22,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:22,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:22,964 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:22,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:22,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:22,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:22,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:22,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:22,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:22,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:22,969 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:22,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:22,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:22,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:22,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:22,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:22,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:22,973 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:22,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:22,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:22,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:22,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:22,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:22,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:22,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:22,977 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:22,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:22,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:22,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:22,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:22,979 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 [2022-02-10 03:33:22,999 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 2 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:33:22,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:33:24,279 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-02-10 03:33:24,280 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 [2022-02-10 03:33:26,094 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 3 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:33:26,094 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548326564] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:33:26,094 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:33:26,094 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 17] total 40 [2022-02-10 03:33:26,094 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286422289] [2022-02-10 03:33:26,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:33:26,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-10 03:33:26,094 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:33:26,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-10 03:33:26,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=1354, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 03:33:26,095 INFO L87 Difference]: Start difference. First operand 5905 states and 8412 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) [2022-02-10 03:33:27,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:33:27,979 INFO L93 Difference]: Finished difference Result 8526 states and 11805 transitions. [2022-02-10 03:33:27,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-02-10 03:33:27,979 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 [2022-02-10 03:33:27,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:33:27,991 INFO L225 Difference]: With dead ends: 8526 [2022-02-10 03:33:27,991 INFO L226 Difference]: Without dead ends: 8258 [2022-02-10 03:33:27,991 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 48 SyntacticMatches, 6 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1167 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=628, Invalid=3662, Unknown=0, NotChecked=0, Total=4290 [2022-02-10 03:33:27,991 INFO L933 BasicCegarLoop]: 104 mSDtfsCounter, 492 mSDsluCounter, 2660 mSDsCounter, 0 mSdLazyCounter, 1890 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 1854 SdHoareTripleChecker+Invalid, 2126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 1890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 104 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-10 03:33:27,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [492 Valid, 1854 Invalid, 2126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 1890 Invalid, 0 Unknown, 104 Unchecked, 0.9s Time] [2022-02-10 03:33:27,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8258 states. [2022-02-10 03:33:28,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8258 to 6317. [2022-02-10 03:33:28,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6317 states, 6316 states have (on average 1.4260607979734008) internal successors, (9007), 6316 states have internal predecessors, (9007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:33:28,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6317 states to 6317 states and 9007 transitions. [2022-02-10 03:33:28,073 INFO L78 Accepts]: Start accepts. Automaton has 6317 states and 9007 transitions. Word has length 39 [2022-02-10 03:33:28,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:33:28,073 INFO L470 AbstractCegarLoop]: Abstraction has 6317 states and 9007 transitions. [2022-02-10 03:33:28,073 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) [2022-02-10 03:33:28,074 INFO L276 IsEmpty]: Start isEmpty. Operand 6317 states and 9007 transitions. [2022-02-10 03:33:28,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 03:33:28,078 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:33:28,078 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:33:28,094 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Forceful destruction successful, exit code 0 [2022-02-10 03:33:28,278 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 [2022-02-10 03:33:28,279 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:33:28,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:33:28,279 INFO L85 PathProgramCache]: Analyzing trace with hash -665271064, now seen corresponding path program 88 times [2022-02-10 03:33:28,279 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:33:28,279 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099744854] [2022-02-10 03:33:28,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:33:28,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:33:28,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:33:28,599 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:33:28,599 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:33:28,600 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099744854] [2022-02-10 03:33:28,600 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099744854] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:33:28,600 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816945388] [2022-02-10 03:33:28,600 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:33:28,600 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:33:28,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:33:28,601 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:33:28,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2022-02-10 03:33:28,621 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:33:28,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:33:28,622 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 57 conjunts are in the unsatisfiable core [2022-02-10 03:33:28,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:33:29,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:29,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:29,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:29,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:29,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:29,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:29,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:29,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:29,366 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:29,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:29,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:29,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:29,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:29,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:29,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:29,369 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:29,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:29,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:29,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:29,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:29,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:29,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:29,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:29,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:29,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:29,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:29,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:29,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:29,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:29,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:29,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:29,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:29,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:29,378 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:29,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:29,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:29,380 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:29,380 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 [2022-02-10 03:33:29,397 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:33:29,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:33:30,644 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-02-10 03:33:30,645 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 [2022-02-10 03:33:32,008 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 3 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:33:32,008 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816945388] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:33:32,008 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:33:32,008 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 42 [2022-02-10 03:33:32,008 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705510627] [2022-02-10 03:33:32,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:33:32,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-02-10 03:33:32,009 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:33:32,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-02-10 03:33:32,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=1516, Unknown=0, NotChecked=0, Total=1806 [2022-02-10 03:33:32,009 INFO L87 Difference]: Start difference. First operand 6317 states and 9007 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) [2022-02-10 03:33:34,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:33:34,121 INFO L93 Difference]: Finished difference Result 10762 states and 15264 transitions. [2022-02-10 03:33:34,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-02-10 03:33:34,121 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 [2022-02-10 03:33:34,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:33:34,133 INFO L225 Difference]: With dead ends: 10762 [2022-02-10 03:33:34,134 INFO L226 Difference]: Without dead ends: 10530 [2022-02-10 03:33:34,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 48 SyntacticMatches, 4 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2048 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1213, Invalid=5927, Unknown=0, NotChecked=0, Total=7140 [2022-02-10 03:33:34,134 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 391 mSDsluCounter, 1848 mSDsCounter, 0 mSdLazyCounter, 1059 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 1419 SdHoareTripleChecker+Invalid, 1624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 469 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 03:33:34,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [391 Valid, 1419 Invalid, 1624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1059 Invalid, 0 Unknown, 469 Unchecked, 0.6s Time] [2022-02-10 03:33:34,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10530 states. [2022-02-10 03:33:34,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10530 to 6113. [2022-02-10 03:33:34,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6113 states, 6112 states have (on average 1.4227748691099475) internal successors, (8696), 6112 states have internal predecessors, (8696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:33:34,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6113 states to 6113 states and 8696 transitions. [2022-02-10 03:33:34,215 INFO L78 Accepts]: Start accepts. Automaton has 6113 states and 8696 transitions. Word has length 39 [2022-02-10 03:33:34,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:33:34,215 INFO L470 AbstractCegarLoop]: Abstraction has 6113 states and 8696 transitions. [2022-02-10 03:33:34,215 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) [2022-02-10 03:33:34,215 INFO L276 IsEmpty]: Start isEmpty. Operand 6113 states and 8696 transitions. [2022-02-10 03:33:34,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 03:33:34,218 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:33:34,218 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:33:34,234 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Ended with exit code 0 [2022-02-10 03:33:34,418 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 [2022-02-10 03:33:34,419 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:33:34,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:33:34,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1006253992, now seen corresponding path program 89 times [2022-02-10 03:33:34,419 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:33:34,419 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110487580] [2022-02-10 03:33:34,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:33:34,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:33:34,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:33:34,758 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:33:34,759 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:33:34,759 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110487580] [2022-02-10 03:33:34,759 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110487580] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:33:34,759 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718420037] [2022-02-10 03:33:34,759 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 03:33:34,759 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:33:34,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:33:34,760 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:33:34,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2022-02-10 03:33:34,785 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-02-10 03:33:34,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:33:34,787 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 59 conjunts are in the unsatisfiable core [2022-02-10 03:33:34,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:33:35,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:35,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:35,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:35,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:35,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:35,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:35,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:35,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:35,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:35,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:35,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:35,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:35,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:35,553 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:35,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:35,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:35,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:35,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:35,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:35,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:35,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:35,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:35,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:35,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:35,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:35,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:35,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:35,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:35,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:35,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:35,562 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:35,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:35,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:35,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:35,564 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:35,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:35,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:35,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:35,566 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:35,566 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 [2022-02-10 03:33:35,585 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:33:35,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:33:36,476 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:36,477 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:36,478 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:36,478 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:36,478 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:36,479 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:36,479 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:36,479 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:36,480 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:36,480 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:36,481 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:36,483 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:36,483 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:36,483 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:36,484 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:36,484 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:36,485 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:36,485 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:36,486 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:36,486 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:36,486 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:36,489 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:36,489 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:36,489 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:36,490 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:36,490 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:36,492 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:36,492 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:36,493 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:36,493 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:36,493 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:36,494 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:36,495 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:36,496 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:36,496 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:36,496 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:36,498 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:36,498 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:36,498 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:36,499 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:36,499 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:36,499 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:36,499 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:36,500 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:36,500 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:36,500 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:36,502 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:36,502 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:36,503 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:36,503 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:36,504 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:36,504 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:36,504 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:36,505 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:36,505 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:36,505 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:36,506 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:36,507 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:36,508 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:36,508 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:36,509 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:36,509 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:36,509 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:36,606 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:33:36,606 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 [2022-02-10 03:33:37,278 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:33:37,278 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718420037] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:33:37,278 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:33:37,278 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 43 [2022-02-10 03:33:37,279 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131555110] [2022-02-10 03:33:37,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:33:37,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-02-10 03:33:37,279 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:33:37,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-02-10 03:33:37,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=447, Invalid=1445, Unknown=0, NotChecked=0, Total=1892 [2022-02-10 03:33:37,279 INFO L87 Difference]: Start difference. First operand 6113 states and 8696 transitions. Second operand has 44 states, 44 states have (on average 2.1818181818181817) internal successors, (96), 43 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:33:40,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:33:40,743 INFO L93 Difference]: Finished difference Result 8350 states and 11715 transitions. [2022-02-10 03:33:40,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-02-10 03:33:40,744 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.1818181818181817) internal successors, (96), 43 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have 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 [2022-02-10 03:33:40,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:33:40,753 INFO L225 Difference]: With dead ends: 8350 [2022-02-10 03:33:40,753 INFO L226 Difference]: Without dead ends: 8242 [2022-02-10 03:33:40,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 48 SyntacticMatches, 4 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2332 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1410, Invalid=6600, Unknown=0, NotChecked=0, Total=8010 [2022-02-10 03:33:40,754 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 386 mSDsluCounter, 1296 mSDsCounter, 0 mSdLazyCounter, 877 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 1086 SdHoareTripleChecker+Invalid, 1284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 248 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 03:33:40,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [386 Valid, 1086 Invalid, 1284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 877 Invalid, 0 Unknown, 248 Unchecked, 0.7s Time] [2022-02-10 03:33:40,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8242 states. [2022-02-10 03:33:40,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8242 to 6373. [2022-02-10 03:33:40,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6373 states, 6372 states have (on average 1.4223163841807909) internal successors, (9063), 6372 states have internal predecessors, (9063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:33:40,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6373 states to 6373 states and 9063 transitions. [2022-02-10 03:33:40,833 INFO L78 Accepts]: Start accepts. Automaton has 6373 states and 9063 transitions. Word has length 39 [2022-02-10 03:33:40,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:33:40,833 INFO L470 AbstractCegarLoop]: Abstraction has 6373 states and 9063 transitions. [2022-02-10 03:33:40,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.1818181818181817) internal successors, (96), 43 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:33:40,833 INFO L276 IsEmpty]: Start isEmpty. Operand 6373 states and 9063 transitions. [2022-02-10 03:33:40,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 03:33:40,837 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:33:40,837 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:33:40,853 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Ended with exit code 0 [2022-02-10 03:33:41,037 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 [2022-02-10 03:33:41,038 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:33:41,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:33:41,038 INFO L85 PathProgramCache]: Analyzing trace with hash -946343032, now seen corresponding path program 90 times [2022-02-10 03:33:41,038 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:33:41,038 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395571934] [2022-02-10 03:33:41,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:33:41,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:33:41,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:33:41,410 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:33:41,410 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:33:41,410 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395571934] [2022-02-10 03:33:41,410 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395571934] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:33:41,410 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004559855] [2022-02-10 03:33:41,410 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 03:33:41,410 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:33:41,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:33:41,411 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:33:41,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2022-02-10 03:33:41,435 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-02-10 03:33:41,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:33:41,436 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 59 conjunts are in the unsatisfiable core [2022-02-10 03:33:41,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:33:42,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:42,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:42,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:42,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:42,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:42,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:42,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:42,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:42,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:42,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:42,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:42,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:42,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:42,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:42,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:42,201 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:42,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:42,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:42,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:42,203 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:42,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:42,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:42,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:42,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:42,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:42,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:42,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:42,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:42,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:42,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:42,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:42,209 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:42,210 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 124 treesize of output 44 [2022-02-10 03:33:42,228 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:33:42,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:33:43,474 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-02-10 03:33:43,474 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 [2022-02-10 03:33:44,892 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 6 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:33:44,892 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004559855] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:33:44,892 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:33:44,892 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 41 [2022-02-10 03:33:44,892 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621687831] [2022-02-10 03:33:44,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:33:44,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-02-10 03:33:44,893 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:33:44,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-02-10 03:33:44,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=1440, Unknown=0, NotChecked=0, Total=1722 [2022-02-10 03:33:44,893 INFO L87 Difference]: Start difference. First operand 6373 states and 9063 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) [2022-02-10 03:33:46,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:33:46,835 INFO L93 Difference]: Finished difference Result 9217 states and 13038 transitions. [2022-02-10 03:33:46,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-02-10 03:33:46,835 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 [2022-02-10 03:33:46,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:33:46,847 INFO L225 Difference]: With dead ends: 9217 [2022-02-10 03:33:46,847 INFO L226 Difference]: Without dead ends: 9199 [2022-02-10 03:33:46,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 49 SyntacticMatches, 5 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1727 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=990, Invalid=5652, Unknown=0, NotChecked=0, Total=6642 [2022-02-10 03:33:46,848 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 240 mSDsluCounter, 1279 mSDsCounter, 0 mSdLazyCounter, 952 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 1258 SdHoareTripleChecker+Invalid, 1506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 476 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 03:33:46,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [240 Valid, 1258 Invalid, 1506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 952 Invalid, 0 Unknown, 476 Unchecked, 0.5s Time] [2022-02-10 03:33:46,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9199 states. [2022-02-10 03:33:46,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9199 to 6614. [2022-02-10 03:33:46,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6614 states, 6613 states have (on average 1.4218962649327083) internal successors, (9403), 6613 states have internal predecessors, (9403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:33:46,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6614 states to 6614 states and 9403 transitions. [2022-02-10 03:33:46,936 INFO L78 Accepts]: Start accepts. Automaton has 6614 states and 9403 transitions. Word has length 39 [2022-02-10 03:33:46,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:33:46,936 INFO L470 AbstractCegarLoop]: Abstraction has 6614 states and 9403 transitions. [2022-02-10 03:33:46,936 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) [2022-02-10 03:33:46,936 INFO L276 IsEmpty]: Start isEmpty. Operand 6614 states and 9403 transitions. [2022-02-10 03:33:46,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 03:33:46,940 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:33:46,940 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:33:46,956 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Ended with exit code 0 [2022-02-10 03:33:47,140 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 [2022-02-10 03:33:47,140 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:33:47,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:33:47,141 INFO L85 PathProgramCache]: Analyzing trace with hash -838564184, now seen corresponding path program 91 times [2022-02-10 03:33:47,141 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:33:47,141 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19193628] [2022-02-10 03:33:47,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:33:47,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:33:47,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:33:47,426 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:33:47,426 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:33:47,426 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19193628] [2022-02-10 03:33:47,426 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19193628] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:33:47,426 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325247985] [2022-02-10 03:33:47,426 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 03:33:47,426 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:33:47,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:33:47,427 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:33:47,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2022-02-10 03:33:47,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:33:47,451 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 57 conjunts are in the unsatisfiable core [2022-02-10 03:33:47,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:33:48,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:48,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:48,137 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:48,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:48,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:48,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:48,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:48,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:48,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:48,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:48,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:48,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:48,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:48,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:48,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:48,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:48,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:48,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:48,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:48,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:48,146 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:48,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:48,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:48,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:48,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:48,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:48,149 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 [2022-02-10 03:33:48,167 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 2 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:33:48,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:33:49,441 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-02-10 03:33:49,441 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 [2022-02-10 03:33:50,640 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 6 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:33:50,640 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325247985] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:33:50,640 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:33:50,640 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 17] total 38 [2022-02-10 03:33:50,640 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662660344] [2022-02-10 03:33:50,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:33:50,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-10 03:33:50,640 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:33:50,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-10 03:33:50,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=1229, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 03:33:50,641 INFO L87 Difference]: Start difference. First operand 6614 states and 9403 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) [2022-02-10 03:33:52,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:33:52,444 INFO L93 Difference]: Finished difference Result 9398 states and 13163 transitions. [2022-02-10 03:33:52,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-02-10 03:33:52,445 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 [2022-02-10 03:33:52,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:33:52,457 INFO L225 Difference]: With dead ends: 9398 [2022-02-10 03:33:52,457 INFO L226 Difference]: Without dead ends: 9167 [2022-02-10 03:33:52,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 49 SyntacticMatches, 7 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1054 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=642, Invalid=3264, Unknown=0, NotChecked=0, Total=3906 [2022-02-10 03:33:52,458 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 507 mSDsluCounter, 1965 mSDsCounter, 0 mSdLazyCounter, 1511 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 1471 SdHoareTripleChecker+Invalid, 1678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 1511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-10 03:33:52,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [507 Valid, 1471 Invalid, 1678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 1511 Invalid, 0 Unknown, 35 Unchecked, 0.8s Time] [2022-02-10 03:33:52,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9167 states. [2022-02-10 03:33:52,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9167 to 6816. [2022-02-10 03:33:52,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6816 states, 6815 states have (on average 1.4240645634629494) internal successors, (9705), 6815 states have internal predecessors, (9705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:33:52,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6816 states to 6816 states and 9705 transitions. [2022-02-10 03:33:52,533 INFO L78 Accepts]: Start accepts. Automaton has 6816 states and 9705 transitions. Word has length 39 [2022-02-10 03:33:52,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:33:52,533 INFO L470 AbstractCegarLoop]: Abstraction has 6816 states and 9705 transitions. [2022-02-10 03:33:52,533 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) [2022-02-10 03:33:52,533 INFO L276 IsEmpty]: Start isEmpty. Operand 6816 states and 9705 transitions. [2022-02-10 03:33:52,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 03:33:52,536 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:33:52,536 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:33:52,553 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Ended with exit code 0 [2022-02-10 03:33:52,737 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 [2022-02-10 03:33:52,737 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:33:52,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:33:52,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1364104024, now seen corresponding path program 92 times [2022-02-10 03:33:52,737 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:33:52,737 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465660028] [2022-02-10 03:33:52,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:33:52,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:33:52,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:33:53,059 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:33:53,059 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:33:53,059 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465660028] [2022-02-10 03:33:53,059 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465660028] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:33:53,059 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254566858] [2022-02-10 03:33:53,059 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:33:53,059 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:33:53,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:33:53,060 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:33:53,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2022-02-10 03:33:53,082 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:33:53,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:33:53,083 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 57 conjunts are in the unsatisfiable core [2022-02-10 03:33:53,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:33:53,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:53,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:53,775 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:53,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:53,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:53,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:53,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:53,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:53,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:53,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:53,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:53,779 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:53,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:53,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:53,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:53,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:53,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:53,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:53,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:53,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:53,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:53,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:53,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:53,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:53,797 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 [2022-02-10 03:33:53,815 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 2 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:33:53,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:33:55,033 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-02-10 03:33:55,033 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 [2022-02-10 03:33:56,275 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 6 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:33:56,275 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254566858] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:33:56,275 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:33:56,275 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 17] total 38 [2022-02-10 03:33:56,276 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104118149] [2022-02-10 03:33:56,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:33:56,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-10 03:33:56,276 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:33:56,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-10 03:33:56,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=1232, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 03:33:56,276 INFO L87 Difference]: Start difference. First operand 6816 states and 9705 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) [2022-02-10 03:33:58,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:33:58,352 INFO L93 Difference]: Finished difference Result 10049 states and 13957 transitions. [2022-02-10 03:33:58,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-02-10 03:33:58,352 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 [2022-02-10 03:33:58,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:33:58,373 INFO L225 Difference]: With dead ends: 10049 [2022-02-10 03:33:58,373 INFO L226 Difference]: Without dead ends: 9773 [2022-02-10 03:33:58,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 48 SyntacticMatches, 8 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1261 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=757, Invalid=3935, Unknown=0, NotChecked=0, Total=4692 [2022-02-10 03:33:58,374 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 552 mSDsluCounter, 2549 mSDsCounter, 0 mSdLazyCounter, 1774 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 1764 SdHoareTripleChecker+Invalid, 2119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 1774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 185 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-10 03:33:58,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [552 Valid, 1764 Invalid, 2119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 1774 Invalid, 0 Unknown, 185 Unchecked, 0.9s Time] [2022-02-10 03:33:58,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9773 states. [2022-02-10 03:33:58,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9773 to 6946. [2022-02-10 03:33:58,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6946 states, 6945 states have (on average 1.4247660187185025) internal successors, (9895), 6945 states have internal predecessors, (9895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:33:58,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6946 states to 6946 states and 9895 transitions. [2022-02-10 03:33:58,462 INFO L78 Accepts]: Start accepts. Automaton has 6946 states and 9895 transitions. Word has length 39 [2022-02-10 03:33:58,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:33:58,462 INFO L470 AbstractCegarLoop]: Abstraction has 6946 states and 9895 transitions. [2022-02-10 03:33:58,462 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) [2022-02-10 03:33:58,462 INFO L276 IsEmpty]: Start isEmpty. Operand 6946 states and 9895 transitions. [2022-02-10 03:33:58,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 03:33:58,466 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:33:58,466 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:33:58,481 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Ended with exit code 0 [2022-02-10 03:33:58,666 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 [2022-02-10 03:33:58,666 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:33:58,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:33:58,667 INFO L85 PathProgramCache]: Analyzing trace with hash 398250664, now seen corresponding path program 93 times [2022-02-10 03:33:58,667 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:33:58,667 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509642105] [2022-02-10 03:33:58,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:33:58,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:33:58,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:33:58,964 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:33:58,965 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:33:58,965 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509642105] [2022-02-10 03:33:58,965 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509642105] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:33:58,965 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042190840] [2022-02-10 03:33:58,965 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:33:58,965 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:33:58,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:33:58,966 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:33:58,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2022-02-10 03:33:58,988 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-02-10 03:33:58,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:33:58,989 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 57 conjunts are in the unsatisfiable core [2022-02-10 03:33:58,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:33:59,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:59,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:59,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:59,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:59,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:59,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:59,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:59,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:59,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:59,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:59,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:59,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:59,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:59,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:59,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:59,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:59,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:59,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:59,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:59,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:59,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:59,678 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:59,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:59,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:59,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:59,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:59,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:59,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:59,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:59,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:59,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:33:59,683 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:33:59,684 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 [2022-02-10 03:33:59,702 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 2 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:33:59,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:34:00,962 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-02-10 03:34:00,962 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 [2022-02-10 03:34:02,413 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 6 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:34:02,413 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042190840] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:34:02,413 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:34:02,413 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 17] total 38 [2022-02-10 03:34:02,413 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098387659] [2022-02-10 03:34:02,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:34:02,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-10 03:34:02,414 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:34:02,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-10 03:34:02,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=1221, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 03:34:02,414 INFO L87 Difference]: Start difference. First operand 6946 states and 9895 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) [2022-02-10 03:34:04,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:34:04,770 INFO L93 Difference]: Finished difference Result 11090 states and 15616 transitions. [2022-02-10 03:34:04,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-02-10 03:34:04,770 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 [2022-02-10 03:34:04,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:34:04,786 INFO L225 Difference]: With dead ends: 11090 [2022-02-10 03:34:04,786 INFO L226 Difference]: Without dead ends: 10769 [2022-02-10 03:34:04,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 49 SyntacticMatches, 7 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1608 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=914, Invalid=4938, Unknown=0, NotChecked=0, Total=5852 [2022-02-10 03:34:04,787 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 543 mSDsluCounter, 2421 mSDsCounter, 0 mSdLazyCounter, 1804 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 1713 SdHoareTripleChecker+Invalid, 1991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 1804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-10 03:34:04,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [543 Valid, 1713 Invalid, 1991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 1804 Invalid, 0 Unknown, 41 Unchecked, 0.9s Time] [2022-02-10 03:34:04,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10769 states. [2022-02-10 03:34:04,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10769 to 7834. [2022-02-10 03:34:04,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7834 states, 7833 states have (on average 1.4237201583046086) internal successors, (11152), 7833 states have internal predecessors, (11152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:34:04,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7834 states to 7834 states and 11152 transitions. [2022-02-10 03:34:04,915 INFO L78 Accepts]: Start accepts. Automaton has 7834 states and 11152 transitions. Word has length 39 [2022-02-10 03:34:04,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:34:04,915 INFO L470 AbstractCegarLoop]: Abstraction has 7834 states and 11152 transitions. [2022-02-10 03:34:04,915 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) [2022-02-10 03:34:04,916 INFO L276 IsEmpty]: Start isEmpty. Operand 7834 states and 11152 transitions. [2022-02-10 03:34:04,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 03:34:04,920 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:34:04,920 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:34:04,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Forceful destruction successful, exit code 0 [2022-02-10 03:34:05,122 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 [2022-02-10 03:34:05,122 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:34:05,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:34:05,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1982525928, now seen corresponding path program 94 times [2022-02-10 03:34:05,123 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:34:05,123 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687534055] [2022-02-10 03:34:05,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:34:05,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:34:05,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:34:05,413 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:34:05,413 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:34:05,413 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687534055] [2022-02-10 03:34:05,413 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687534055] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:34:05,413 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233820869] [2022-02-10 03:34:05,413 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:34:05,413 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:34:05,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:34:05,414 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:34:05,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2022-02-10 03:34:05,436 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:34:05,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:34:05,437 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 57 conjunts are in the unsatisfiable core [2022-02-10 03:34:05,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:34:06,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:06,124 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:06,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:06,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:06,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:06,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:06,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:06,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:06,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:06,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:06,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:06,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:06,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:06,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:06,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:06,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:06,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:06,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:06,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:06,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:06,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:06,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:06,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:06,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:06,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:06,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:06,137 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:06,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:06,138 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 [2022-02-10 03:34:06,156 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:34:06,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:34:07,406 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-02-10 03:34:07,407 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 [2022-02-10 03:34:08,641 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 6 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:34:08,641 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233820869] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:34:08,641 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:34:08,641 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 17] total 38 [2022-02-10 03:34:08,641 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904779054] [2022-02-10 03:34:08,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:34:08,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-10 03:34:08,641 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:34:08,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-10 03:34:08,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=1228, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 03:34:08,642 INFO L87 Difference]: Start difference. First operand 7834 states and 11152 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) [2022-02-10 03:34:11,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:34:11,190 INFO L93 Difference]: Finished difference Result 12416 states and 17507 transitions. [2022-02-10 03:34:11,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-02-10 03:34:11,195 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 [2022-02-10 03:34:11,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:34:11,233 INFO L225 Difference]: With dead ends: 12416 [2022-02-10 03:34:11,233 INFO L226 Difference]: Without dead ends: 12320 [2022-02-10 03:34:11,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 49 SyntacticMatches, 7 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1984 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1098, Invalid=5874, Unknown=0, NotChecked=0, Total=6972 [2022-02-10 03:34:11,234 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 310 mSDsluCounter, 2043 mSDsCounter, 0 mSdLazyCounter, 1517 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 1683 SdHoareTripleChecker+Invalid, 1848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 204 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-10 03:34:11,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [310 Valid, 1683 Invalid, 1848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1517 Invalid, 0 Unknown, 204 Unchecked, 0.8s Time] [2022-02-10 03:34:11,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12320 states. [2022-02-10 03:34:11,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12320 to 7932. [2022-02-10 03:34:11,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7932 states, 7931 states have (on average 1.4268062035052327) internal successors, (11316), 7931 states have internal predecessors, (11316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:34:11,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7932 states to 7932 states and 11316 transitions. [2022-02-10 03:34:11,382 INFO L78 Accepts]: Start accepts. Automaton has 7932 states and 11316 transitions. Word has length 39 [2022-02-10 03:34:11,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:34:11,382 INFO L470 AbstractCegarLoop]: Abstraction has 7932 states and 11316 transitions. [2022-02-10 03:34:11,382 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) [2022-02-10 03:34:11,382 INFO L276 IsEmpty]: Start isEmpty. Operand 7932 states and 11316 transitions. [2022-02-10 03:34:11,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 03:34:11,389 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:34:11,389 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:34:11,405 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Ended with exit code 0 [2022-02-10 03:34:11,589 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 [2022-02-10 03:34:11,589 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:34:11,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:34:11,590 INFO L85 PathProgramCache]: Analyzing trace with hash -447401448, now seen corresponding path program 95 times [2022-02-10 03:34:11,590 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:34:11,590 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856774526] [2022-02-10 03:34:11,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:34:11,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:34:11,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:34:11,957 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:34:11,957 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:34:11,957 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856774526] [2022-02-10 03:34:11,958 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856774526] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:34:11,958 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72366609] [2022-02-10 03:34:11,958 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 03:34:11,958 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:34:11,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:34:11,959 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:34:11,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2022-02-10 03:34:11,985 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-02-10 03:34:11,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:34:11,986 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 59 conjunts are in the unsatisfiable core [2022-02-10 03:34:11,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:34:12,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:12,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:12,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:12,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:12,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:12,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:12,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:12,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:12,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:12,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:12,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:12,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:12,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:12,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:12,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:12,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:12,745 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:12,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:12,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:12,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:12,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:12,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:12,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:12,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:12,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:12,749 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:12,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:12,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:12,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:12,752 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 [2022-02-10 03:34:12,771 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:34:12,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:34:13,589 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:13,590 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:13,591 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:13,591 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:13,591 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:13,592 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:13,592 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:13,592 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:13,593 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:13,593 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:13,594 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:13,596 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:13,596 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:13,596 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:13,596 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:13,597 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:13,598 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:13,598 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:13,599 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:13,599 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:13,599 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:13,602 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:13,602 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:13,603 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:13,603 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:13,604 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:13,605 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:13,606 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:13,606 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:13,606 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:13,607 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:13,607 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:13,608 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:13,609 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:13,609 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:13,610 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:13,611 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:13,611 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:13,612 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:13,612 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:13,612 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:13,612 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:13,613 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:13,613 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:13,613 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:13,614 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:13,615 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:13,616 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:13,616 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:13,617 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:13,617 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:13,617 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:13,618 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:13,618 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:13,618 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:13,618 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:13,619 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:13,621 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:13,621 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:13,621 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:13,622 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:13,622 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:13,623 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:13,718 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:34:13,718 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 [2022-02-10 03:34:14,516 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:34:14,517 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72366609] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:34:14,517 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:34:14,517 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 41 [2022-02-10 03:34:14,517 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88181319] [2022-02-10 03:34:14,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:34:14,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-02-10 03:34:14,517 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:34:14,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-02-10 03:34:14,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=410, Invalid=1312, Unknown=0, NotChecked=0, Total=1722 [2022-02-10 03:34:14,517 INFO L87 Difference]: Start difference. First operand 7932 states and 11316 transitions. Second operand has 42 states, 42 states have (on average 2.142857142857143) internal successors, (90), 41 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) [2022-02-10 03:34:19,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:34:19,830 INFO L93 Difference]: Finished difference Result 10929 states and 15392 transitions. [2022-02-10 03:34:19,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-02-10 03:34:19,830 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.142857142857143) internal successors, (90), 41 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 [2022-02-10 03:34:19,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:34:19,844 INFO L225 Difference]: With dead ends: 10929 [2022-02-10 03:34:19,845 INFO L226 Difference]: Without dead ends: 10553 [2022-02-10 03:34:19,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 47 SyntacticMatches, 6 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3851 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=2096, Invalid=10560, Unknown=0, NotChecked=0, Total=12656 [2022-02-10 03:34:19,846 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 620 mSDsluCounter, 2242 mSDsCounter, 0 mSdLazyCounter, 1460 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 620 SdHoareTripleChecker+Valid, 1542 SdHoareTripleChecker+Invalid, 1976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 1460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 348 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-10 03:34:19,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [620 Valid, 1542 Invalid, 1976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 1460 Invalid, 0 Unknown, 348 Unchecked, 1.0s Time] [2022-02-10 03:34:19,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10553 states. [2022-02-10 03:34:19,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10553 to 8035. [2022-02-10 03:34:19,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8035 states, 8034 states have (on average 1.4268110530246452) internal successors, (11463), 8034 states have internal predecessors, (11463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:34:20,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8035 states to 8035 states and 11463 transitions. [2022-02-10 03:34:20,002 INFO L78 Accepts]: Start accepts. Automaton has 8035 states and 11463 transitions. Word has length 39 [2022-02-10 03:34:20,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:34:20,002 INFO L470 AbstractCegarLoop]: Abstraction has 8035 states and 11463 transitions. [2022-02-10 03:34:20,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.142857142857143) internal successors, (90), 41 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) [2022-02-10 03:34:20,002 INFO L276 IsEmpty]: Start isEmpty. Operand 8035 states and 11463 transitions. [2022-02-10 03:34:20,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 03:34:20,007 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:34:20,007 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:34:20,024 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Ended with exit code 0 [2022-02-10 03:34:20,211 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 [2022-02-10 03:34:20,211 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:34:20,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:34:20,211 INFO L85 PathProgramCache]: Analyzing trace with hash -196706856, now seen corresponding path program 96 times [2022-02-10 03:34:20,212 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:34:20,212 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921029611] [2022-02-10 03:34:20,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:34:20,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:34:20,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:34:20,542 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 03:34:20,542 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:34:20,542 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921029611] [2022-02-10 03:34:20,542 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921029611] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:34:20,542 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020124145] [2022-02-10 03:34:20,542 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 03:34:20,542 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:34:20,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:34:20,543 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:34:20,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2022-02-10 03:34:20,581 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-02-10 03:34:20,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:34:20,582 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 59 conjunts are in the unsatisfiable core [2022-02-10 03:34:20,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:34:21,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:21,289 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:21,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:21,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:21,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:21,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:21,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:21,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:21,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:21,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:21,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:21,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:21,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:21,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:21,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:21,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:21,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:21,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:21,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:21,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:21,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:21,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:21,301 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 21 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 44 [2022-02-10 03:34:21,320 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 3 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:34:21,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:34:22,598 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-02-10 03:34:22,599 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 [2022-02-10 03:34:24,586 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 12 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:34:24,586 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020124145] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:34:24,586 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:34:24,586 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 17] total 38 [2022-02-10 03:34:24,586 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911913312] [2022-02-10 03:34:24,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:34:24,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-10 03:34:24,586 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:34:24,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-10 03:34:24,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=1235, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 03:34:24,587 INFO L87 Difference]: Start difference. First operand 8035 states and 11463 transitions. Second operand has 39 states, 39 states have (on average 2.1538461538461537) internal successors, (84), 38 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) [2022-02-10 03:34:27,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:34:27,459 INFO L93 Difference]: Finished difference Result 11563 states and 16308 transitions. [2022-02-10 03:34:27,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-02-10 03:34:27,459 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.1538461538461537) internal successors, (84), 38 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 39 [2022-02-10 03:34:27,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:34:27,474 INFO L225 Difference]: With dead ends: 11563 [2022-02-10 03:34:27,474 INFO L226 Difference]: Without dead ends: 11119 [2022-02-10 03:34:27,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 49 SyntacticMatches, 7 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2569 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1423, Invalid=7889, Unknown=0, NotChecked=0, Total=9312 [2022-02-10 03:34:27,475 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 498 mSDsluCounter, 2659 mSDsCounter, 0 mSdLazyCounter, 1688 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 1892 SdHoareTripleChecker+Invalid, 2407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 629 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-10 03:34:27,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [498 Valid, 1892 Invalid, 2407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1688 Invalid, 0 Unknown, 629 Unchecked, 0.9s Time] [2022-02-10 03:34:27,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11119 states. [2022-02-10 03:34:27,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11119 to 8099. [2022-02-10 03:34:27,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8099 states, 8098 states have (on average 1.4268955297604347) internal successors, (11555), 8098 states have internal predecessors, (11555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:34:27,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8099 states to 8099 states and 11555 transitions. [2022-02-10 03:34:27,603 INFO L78 Accepts]: Start accepts. Automaton has 8099 states and 11555 transitions. Word has length 39 [2022-02-10 03:34:27,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:34:27,603 INFO L470 AbstractCegarLoop]: Abstraction has 8099 states and 11555 transitions. [2022-02-10 03:34:27,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.1538461538461537) internal successors, (84), 38 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) [2022-02-10 03:34:27,604 INFO L276 IsEmpty]: Start isEmpty. Operand 8099 states and 11555 transitions. [2022-02-10 03:34:27,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 03:34:27,609 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:34:27,609 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:34:27,625 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Ended with exit code 0 [2022-02-10 03:34:27,809 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 [2022-02-10 03:34:27,809 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:34:27,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:34:27,809 INFO L85 PathProgramCache]: Analyzing trace with hash -537689784, now seen corresponding path program 97 times [2022-02-10 03:34:27,810 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:34:27,810 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552345897] [2022-02-10 03:34:27,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:34:27,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:34:27,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:34:28,149 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:34:28,150 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:34:28,150 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552345897] [2022-02-10 03:34:28,150 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552345897] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:34:28,150 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836665765] [2022-02-10 03:34:28,150 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 03:34:28,150 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:34:28,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:34:28,151 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:34:28,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2022-02-10 03:34:28,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:34:28,174 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 57 conjunts are in the unsatisfiable core [2022-02-10 03:34:28,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:34:28,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:28,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:28,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:28,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:28,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:28,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:28,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:28,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:28,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:28,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:28,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:28,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:28,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:28,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:28,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:28,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:28,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:28,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:28,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:28,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:28,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:28,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:28,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:28,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:28,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:28,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:28,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:28,880 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:28,880 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 [2022-02-10 03:34:28,898 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:34:28,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:34:30,172 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-02-10 03:34:30,172 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 [2022-02-10 03:34:32,138 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 12 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:34:32,139 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836665765] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:34:32,139 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:34:32,139 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 39 [2022-02-10 03:34:32,139 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828350839] [2022-02-10 03:34:32,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:34:32,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-10 03:34:32,139 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:34:32,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-10 03:34:32,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=1305, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 03:34:32,140 INFO L87 Difference]: Start difference. First operand 8099 states and 11555 transitions. Second operand has 40 states, 40 states have (on average 2.15) internal successors, (86), 39 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) [2022-02-10 03:34:34,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:34:34,327 INFO L93 Difference]: Finished difference Result 10914 states and 15477 transitions. [2022-02-10 03:34:34,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-02-10 03:34:34,327 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.15) internal successors, (86), 39 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 [2022-02-10 03:34:34,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:34:34,340 INFO L225 Difference]: With dead ends: 10914 [2022-02-10 03:34:34,341 INFO L226 Difference]: Without dead ends: 10887 [2022-02-10 03:34:34,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 48 SyntacticMatches, 7 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1872 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1139, Invalid=6171, Unknown=0, NotChecked=0, Total=7310 [2022-02-10 03:34:34,342 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 276 mSDsluCounter, 1779 mSDsCounter, 0 mSdLazyCounter, 1265 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 1677 SdHoareTripleChecker+Invalid, 1866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 529 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 03:34:34,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [276 Valid, 1677 Invalid, 1866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1265 Invalid, 0 Unknown, 529 Unchecked, 0.7s Time] [2022-02-10 03:34:34,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10887 states. [2022-02-10 03:34:34,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10887 to 8115. [2022-02-10 03:34:34,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8115 states, 8114 states have (on average 1.4265467093911757) internal successors, (11575), 8114 states have internal predecessors, (11575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:34:34,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8115 states to 8115 states and 11575 transitions. [2022-02-10 03:34:34,455 INFO L78 Accepts]: Start accepts. Automaton has 8115 states and 11575 transitions. Word has length 39 [2022-02-10 03:34:34,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:34:34,455 INFO L470 AbstractCegarLoop]: Abstraction has 8115 states and 11575 transitions. [2022-02-10 03:34:34,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.15) internal successors, (86), 39 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) [2022-02-10 03:34:34,455 INFO L276 IsEmpty]: Start isEmpty. Operand 8115 states and 11575 transitions. [2022-02-10 03:34:34,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 03:34:34,460 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:34:34,460 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:34:34,476 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Ended with exit code 0 [2022-02-10 03:34:34,660 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 [2022-02-10 03:34:34,661 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:34:34,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:34:34,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1776741336, now seen corresponding path program 98 times [2022-02-10 03:34:34,661 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:34:34,661 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695913702] [2022-02-10 03:34:34,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:34:34,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:34:34,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:34:35,046 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:34:35,046 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:34:35,046 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695913702] [2022-02-10 03:34:35,046 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695913702] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:34:35,046 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593249385] [2022-02-10 03:34:35,047 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:34:35,047 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:34:35,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:34:35,048 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:34:35,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2022-02-10 03:34:35,070 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:34:35,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:34:35,071 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 57 conjunts are in the unsatisfiable core [2022-02-10 03:34:35,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:34:35,685 INFO L353 Elim1Store]: treesize reduction 240, result has 0.4 percent of original size [2022-02-10 03:34:35,685 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 [2022-02-10 03:34:35,703 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:34:35,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:34:37,016 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-02-10 03:34:37,017 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 [2022-02-10 03:34:39,030 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 18 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:34:39,030 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593249385] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:34:39,030 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:34:39,030 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-02-10 03:34:39,030 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590117140] [2022-02-10 03:34:39,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:34:39,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-10 03:34:39,031 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:34:39,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-10 03:34:39,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=1241, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 03:34:39,031 INFO L87 Difference]: Start difference. First operand 8115 states and 11575 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) [2022-02-10 03:34:41,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:34:41,278 INFO L93 Difference]: Finished difference Result 10999 states and 15625 transitions. [2022-02-10 03:34:41,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-02-10 03:34:41,278 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 [2022-02-10 03:34:41,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:34:41,294 INFO L225 Difference]: With dead ends: 10999 [2022-02-10 03:34:41,295 INFO L226 Difference]: Without dead ends: 10981 [2022-02-10 03:34:41,295 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 [2022-02-10 03:34:41,295 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 215 mSDsluCounter, 1727 mSDsCounter, 0 mSdLazyCounter, 1747 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 1706 SdHoareTripleChecker+Invalid, 1800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-10 03:34:41,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 1706 Invalid, 1800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1747 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-10 03:34:41,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10981 states. [2022-02-10 03:34:41,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10981 to 8061. [2022-02-10 03:34:41,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8061 states, 8060 states have (on average 1.426923076923077) internal successors, (11501), 8060 states have internal predecessors, (11501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:34:41,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8061 states to 8061 states and 11501 transitions. [2022-02-10 03:34:41,407 INFO L78 Accepts]: Start accepts. Automaton has 8061 states and 11501 transitions. Word has length 39 [2022-02-10 03:34:41,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:34:41,407 INFO L470 AbstractCegarLoop]: Abstraction has 8061 states and 11501 transitions. [2022-02-10 03:34:41,407 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) [2022-02-10 03:34:41,407 INFO L276 IsEmpty]: Start isEmpty. Operand 8061 states and 11501 transitions. [2022-02-10 03:34:41,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-02-10 03:34:41,412 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:34:41,412 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:34:41,430 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Ended with exit code 0 [2022-02-10 03:34:41,612 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 [2022-02-10 03:34:41,614 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:34:41,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:34:41,614 INFO L85 PathProgramCache]: Analyzing trace with hash -567679907, now seen corresponding path program 99 times [2022-02-10 03:34:41,614 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:34:41,614 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407385489] [2022-02-10 03:34:41,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:34:41,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:34:41,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:34:41,659 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 43 proven. 50 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:34:41,659 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:34:41,659 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407385489] [2022-02-10 03:34:41,659 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407385489] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:34:41,659 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449104461] [2022-02-10 03:34:41,659 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:34:41,659 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:34:41,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:34:41,660 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:34:41,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2022-02-10 03:34:41,684 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-02-10 03:34:41,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:34:41,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 03:34:41,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:34:41,740 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 43 proven. 49 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 03:34:41,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:34:41,797 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 43 proven. 49 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 03:34:41,797 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449104461] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:34:41,797 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:34:41,797 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 9 [2022-02-10 03:34:41,797 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379841233] [2022-02-10 03:34:41,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:34:41,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-10 03:34:41,798 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:34:41,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-10 03:34:41,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2022-02-10 03:34:41,798 INFO L87 Difference]: Start difference. First operand 8061 states and 11501 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:34:41,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:34:41,855 INFO L93 Difference]: Finished difference Result 10248 states and 14454 transitions. [2022-02-10 03:34:41,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-10 03:34:41,855 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2022-02-10 03:34:41,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:34:41,867 INFO L225 Difference]: With dead ends: 10248 [2022-02-10 03:34:41,868 INFO L226 Difference]: Without dead ends: 10248 [2022-02-10 03:34:41,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2022-02-10 03:34:41,868 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 94 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 03:34:41,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 90 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 03:34:41,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10248 states. [2022-02-10 03:34:41,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10248 to 9306. [2022-02-10 03:34:41,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9306 states, 9305 states have (on average 1.4377216550241805) internal successors, (13378), 9305 states have internal predecessors, (13378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:34:41,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9306 states to 9306 states and 13378 transitions. [2022-02-10 03:34:41,989 INFO L78 Accepts]: Start accepts. Automaton has 9306 states and 13378 transitions. Word has length 40 [2022-02-10 03:34:41,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:34:41,989 INFO L470 AbstractCegarLoop]: Abstraction has 9306 states and 13378 transitions. [2022-02-10 03:34:41,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:34:41,989 INFO L276 IsEmpty]: Start isEmpty. Operand 9306 states and 13378 transitions. [2022-02-10 03:34:41,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-02-10 03:34:41,995 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:34:41,995 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:34:42,010 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Ended with exit code 0 [2022-02-10 03:34:42,195 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 [2022-02-10 03:34:42,195 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:34:42,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:34:42,196 INFO L85 PathProgramCache]: Analyzing trace with hash -796438755, now seen corresponding path program 100 times [2022-02-10 03:34:42,196 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:34:42,196 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73865794] [2022-02-10 03:34:42,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:34:42,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:34:42,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:34:42,247 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 49 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:34:42,247 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:34:42,247 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73865794] [2022-02-10 03:34:42,247 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73865794] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:34:42,247 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397649136] [2022-02-10 03:34:42,247 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:34:42,247 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:34:42,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:34:42,248 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:34:42,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2022-02-10 03:34:42,270 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:34:42,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:34:42,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 03:34:42,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:34:42,334 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 49 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:34:42,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:34:42,388 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 49 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:34:42,389 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397649136] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:34:42,389 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:34:42,389 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 10 [2022-02-10 03:34:42,389 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926548547] [2022-02-10 03:34:42,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:34:42,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-10 03:34:42,389 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:34:42,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-10 03:34:42,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2022-02-10 03:34:42,389 INFO L87 Difference]: Start difference. First operand 9306 states and 13378 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) [2022-02-10 03:34:42,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:34:42,468 INFO L93 Difference]: Finished difference Result 12396 states and 17550 transitions. [2022-02-10 03:34:42,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-10 03:34:42,468 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 [2022-02-10 03:34:42,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:34:42,485 INFO L225 Difference]: With dead ends: 12396 [2022-02-10 03:34:42,485 INFO L226 Difference]: Without dead ends: 12396 [2022-02-10 03:34:42,485 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 [2022-02-10 03:34:42,485 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 120 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 03:34:42,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 85 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 03:34:42,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12396 states. [2022-02-10 03:34:42,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12396 to 11191. [2022-02-10 03:34:42,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11191 states, 11190 states have (on average 1.4474530831099195) internal successors, (16197), 11190 states have internal predecessors, (16197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:34:42,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11191 states to 11191 states and 16197 transitions. [2022-02-10 03:34:42,630 INFO L78 Accepts]: Start accepts. Automaton has 11191 states and 16197 transitions. Word has length 40 [2022-02-10 03:34:42,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:34:42,630 INFO L470 AbstractCegarLoop]: Abstraction has 11191 states and 16197 transitions. [2022-02-10 03:34:42,630 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) [2022-02-10 03:34:42,630 INFO L276 IsEmpty]: Start isEmpty. Operand 11191 states and 16197 transitions. [2022-02-10 03:34:42,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-10 03:34:42,637 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:34:42,637 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:34:42,654 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Ended with exit code 0 [2022-02-10 03:34:42,837 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 [2022-02-10 03:34:42,838 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:34:42,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:34:42,838 INFO L85 PathProgramCache]: Analyzing trace with hash -867349419, now seen corresponding path program 101 times [2022-02-10 03:34:42,838 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:34:42,838 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518382553] [2022-02-10 03:34:42,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:34:42,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:34:42,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:34:43,209 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:34:43,209 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:34:43,209 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518382553] [2022-02-10 03:34:43,209 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518382553] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:34:43,209 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489962025] [2022-02-10 03:34:43,209 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 03:34:43,209 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:34:43,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:34:43,220 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:34:43,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2022-02-10 03:34:43,250 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-02-10 03:34:43,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:34:43,252 WARN L261 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 57 conjunts are in the unsatisfiable core [2022-02-10 03:34:43,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:34:44,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:44,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:44,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:44,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:44,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:44,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:44,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:44,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:44,032 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:44,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:44,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:44,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:44,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:44,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:44,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:44,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:44,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:44,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:44,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:44,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:44,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:44,038 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:44,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:44,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:44,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:44,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:44,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:44,041 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 [2022-02-10 03:34:44,059 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:34:44,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:34:45,340 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-02-10 03:34:45,340 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 [2022-02-10 03:34:46,739 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 11 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:34:46,740 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489962025] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:34:46,740 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:34:46,740 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 17] total 39 [2022-02-10 03:34:46,740 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929952973] [2022-02-10 03:34:46,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:34:46,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-10 03:34:46,740 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:34:46,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-10 03:34:46,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=1300, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 03:34:46,741 INFO L87 Difference]: Start difference. First operand 11191 states and 16197 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) [2022-02-10 03:34:48,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:34:48,722 INFO L93 Difference]: Finished difference Result 17117 states and 24737 transitions. [2022-02-10 03:34:48,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-02-10 03:34:48,723 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 [2022-02-10 03:34:48,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:34:48,745 INFO L225 Difference]: With dead ends: 17117 [2022-02-10 03:34:48,745 INFO L226 Difference]: Without dead ends: 16975 [2022-02-10 03:34:48,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 55 SyntacticMatches, 6 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1346 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=808, Invalid=4594, Unknown=0, NotChecked=0, Total=5402 [2022-02-10 03:34:48,746 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 285 mSDsluCounter, 2324 mSDsCounter, 0 mSdLazyCounter, 1475 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 1849 SdHoareTripleChecker+Invalid, 2045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 483 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 03:34:48,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [285 Valid, 1849 Invalid, 2045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1475 Invalid, 0 Unknown, 483 Unchecked, 0.7s Time] [2022-02-10 03:34:48,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16975 states. [2022-02-10 03:34:48,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16975 to 11545. [2022-02-10 03:34:48,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11545 states, 11544 states have (on average 1.4468121968121967) internal successors, (16702), 11544 states have internal predecessors, (16702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:34:48,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11545 states to 11545 states and 16702 transitions. [2022-02-10 03:34:48,914 INFO L78 Accepts]: Start accepts. Automaton has 11545 states and 16702 transitions. Word has length 42 [2022-02-10 03:34:48,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:34:48,914 INFO L470 AbstractCegarLoop]: Abstraction has 11545 states and 16702 transitions. [2022-02-10 03:34:48,914 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) [2022-02-10 03:34:48,914 INFO L276 IsEmpty]: Start isEmpty. Operand 11545 states and 16702 transitions. [2022-02-10 03:34:48,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-10 03:34:48,922 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:34:48,922 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:34:48,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Forceful destruction successful, exit code 0 [2022-02-10 03:34:49,122 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 [2022-02-10 03:34:49,122 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:34:49,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:34:49,123 INFO L85 PathProgramCache]: Analyzing trace with hash -382815387, now seen corresponding path program 102 times [2022-02-10 03:34:49,123 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:34:49,123 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532431602] [2022-02-10 03:34:49,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:34:49,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:34:49,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:34:49,463 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 2 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:34:49,463 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:34:49,463 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532431602] [2022-02-10 03:34:49,463 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532431602] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:34:49,463 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648667758] [2022-02-10 03:34:49,463 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 03:34:49,464 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:34:49,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:34:49,465 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:34:49,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2022-02-10 03:34:49,489 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-02-10 03:34:49,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:34:49,491 WARN L261 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 57 conjunts are in the unsatisfiable core [2022-02-10 03:34:49,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:34:50,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:50,252 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:50,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:50,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:50,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:50,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:50,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:50,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:50,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:50,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:50,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:50,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:50,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:50,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:50,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:50,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:50,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:50,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:50,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:50,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:50,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:50,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:50,264 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 [2022-02-10 03:34:50,282 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 2 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:34:50,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:34:51,575 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-02-10 03:34:51,576 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 [2022-02-10 03:34:53,335 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 14 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:34:53,335 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648667758] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:34:53,335 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:34:53,335 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 17] total 37 [2022-02-10 03:34:53,335 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89917740] [2022-02-10 03:34:53,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:34:53,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-10 03:34:53,336 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:34:53,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-10 03:34:53,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=1156, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 03:34:53,336 INFO L87 Difference]: Start difference. First operand 11545 states and 16702 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) [2022-02-10 03:34:55,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:34:55,071 INFO L93 Difference]: Finished difference Result 13733 states and 19682 transitions. [2022-02-10 03:34:55,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-02-10 03:34:55,072 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 42 [2022-02-10 03:34:55,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:34:55,089 INFO L225 Difference]: With dead ends: 13733 [2022-02-10 03:34:55,089 INFO L226 Difference]: Without dead ends: 13495 [2022-02-10 03:34:55,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 55 SyntacticMatches, 9 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 988 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=650, Invalid=3256, Unknown=0, NotChecked=0, Total=3906 [2022-02-10 03:34:55,090 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 531 mSDsluCounter, 1873 mSDsCounter, 0 mSdLazyCounter, 1285 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 1323 SdHoareTripleChecker+Invalid, 1620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 213 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 03:34:55,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [531 Valid, 1323 Invalid, 1620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1285 Invalid, 0 Unknown, 213 Unchecked, 0.7s Time] [2022-02-10 03:34:55,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13495 states. [2022-02-10 03:34:55,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13495 to 11764. [2022-02-10 03:34:55,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11764 states, 11763 states have (on average 1.4475899005355777) internal successors, (17028), 11763 states have internal predecessors, (17028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:34:55,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11764 states to 11764 states and 17028 transitions. [2022-02-10 03:34:55,237 INFO L78 Accepts]: Start accepts. Automaton has 11764 states and 17028 transitions. Word has length 42 [2022-02-10 03:34:55,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:34:55,237 INFO L470 AbstractCegarLoop]: Abstraction has 11764 states and 17028 transitions. [2022-02-10 03:34:55,237 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) [2022-02-10 03:34:55,238 INFO L276 IsEmpty]: Start isEmpty. Operand 11764 states and 17028 transitions. [2022-02-10 03:34:55,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-10 03:34:55,245 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:34:55,245 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:34:55,262 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Ended with exit code 0 [2022-02-10 03:34:55,446 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 [2022-02-10 03:34:55,446 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:34:55,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:34:55,446 INFO L85 PathProgramCache]: Analyzing trace with hash 991658485, now seen corresponding path program 103 times [2022-02-10 03:34:55,446 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:34:55,446 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792355042] [2022-02-10 03:34:55,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:34:55,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:34:55,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:34:55,757 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:34:55,757 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:34:55,757 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792355042] [2022-02-10 03:34:55,757 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792355042] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:34:55,757 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119101872] [2022-02-10 03:34:55,757 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 03:34:55,757 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:34:55,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:34:55,758 INFO L229 MonitoredProcess]: Starting monitored process 106 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:34:55,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2022-02-10 03:34:55,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:34:55,781 WARN L261 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 57 conjunts are in the unsatisfiable core [2022-02-10 03:34:55,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:34:56,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:56,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:56,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:56,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:56,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:56,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:56,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:56,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:56,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:56,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:56,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:56,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:56,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:56,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:56,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:56,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:56,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:56,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:56,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:56,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:56,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:56,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:56,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:56,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:56,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:56,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:56,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:34:56,535 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:34:56,535 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 [2022-02-10 03:34:56,553 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:34:56,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:34:57,792 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-02-10 03:34:57,793 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 [2022-02-10 03:34:58,959 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 12 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:34:58,959 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119101872] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:34:58,959 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:34:58,959 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 17] total 37 [2022-02-10 03:34:58,959 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225048048] [2022-02-10 03:34:58,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:34:58,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-10 03:34:58,960 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:34:58,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-10 03:34:58,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=1166, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 03:34:58,960 INFO L87 Difference]: Start difference. First operand 11764 states and 17028 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) [2022-02-10 03:35:00,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:35:00,549 INFO L93 Difference]: Finished difference Result 15933 states and 22809 transitions. [2022-02-10 03:35:00,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-02-10 03:35:00,550 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 42 [2022-02-10 03:35:00,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:35:00,569 INFO L225 Difference]: With dead ends: 15933 [2022-02-10 03:35:00,570 INFO L226 Difference]: Without dead ends: 15879 [2022-02-10 03:35:00,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 55 SyntacticMatches, 8 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 973 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=652, Invalid=3508, Unknown=0, NotChecked=0, Total=4160 [2022-02-10 03:35:00,570 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 250 mSDsluCounter, 1610 mSDsCounter, 0 mSdLazyCounter, 1217 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 1410 SdHoareTripleChecker+Invalid, 1503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 188 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 03:35:00,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 1410 Invalid, 1503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1217 Invalid, 0 Unknown, 188 Unchecked, 0.6s Time] [2022-02-10 03:35:00,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15879 states. [2022-02-10 03:35:00,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15879 to 11710. [2022-02-10 03:35:00,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11710 states, 11709 states have (on average 1.4468357673584422) internal successors, (16941), 11709 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) [2022-02-10 03:35:00,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11710 states to 11710 states and 16941 transitions. [2022-02-10 03:35:00,746 INFO L78 Accepts]: Start accepts. Automaton has 11710 states and 16941 transitions. Word has length 42 [2022-02-10 03:35:00,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:35:00,746 INFO L470 AbstractCegarLoop]: Abstraction has 11710 states and 16941 transitions. [2022-02-10 03:35:00,746 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) [2022-02-10 03:35:00,746 INFO L276 IsEmpty]: Start isEmpty. Operand 11710 states and 16941 transitions. [2022-02-10 03:35:00,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-10 03:35:00,753 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:35:00,753 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:35:00,769 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Ended with exit code 0 [2022-02-10 03:35:00,954 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 [2022-02-10 03:35:00,954 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:35:00,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:35:00,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1329860619, now seen corresponding path program 104 times [2022-02-10 03:35:00,955 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:35:00,955 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185922193] [2022-02-10 03:35:00,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:35:00,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:35:00,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:35:01,267 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:35:01,268 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:35:01,268 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185922193] [2022-02-10 03:35:01,268 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185922193] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:35:01,268 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864345010] [2022-02-10 03:35:01,268 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:35:01,268 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:35:01,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:35:01,269 INFO L229 MonitoredProcess]: Starting monitored process 107 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:35:01,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2022-02-10 03:35:01,292 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:35:01,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:35:01,293 WARN L261 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 57 conjunts are in the unsatisfiable core [2022-02-10 03:35:01,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:35:02,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:02,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:02,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:02,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:02,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:02,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:02,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:02,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:02,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:02,044 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:35:02,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:02,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:02,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:02,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:02,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:02,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:02,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:02,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:02,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:02,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:02,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:02,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:02,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:02,053 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 [2022-02-10 03:35:02,075 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:35:02,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:35:03,343 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-02-10 03:35:03,343 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 [2022-02-10 03:35:04,374 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 12 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:35:04,374 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864345010] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:35:04,374 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:35:04,374 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 17] total 38 [2022-02-10 03:35:04,374 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179976546] [2022-02-10 03:35:04,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:35:04,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-10 03:35:04,374 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:35:04,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-10 03:35:04,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=1231, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 03:35:04,375 INFO L87 Difference]: Start difference. First operand 11710 states and 16941 transitions. Second operand has 39 states, 39 states have (on average 2.4358974358974357) internal successors, (95), 38 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) [2022-02-10 03:35:06,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:35:06,373 INFO L93 Difference]: Finished difference Result 17023 states and 24433 transitions. [2022-02-10 03:35:06,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-02-10 03:35:06,373 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.4358974358974357) internal successors, (95), 38 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 [2022-02-10 03:35:06,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:35:06,398 INFO L225 Difference]: With dead ends: 17023 [2022-02-10 03:35:06,398 INFO L226 Difference]: Without dead ends: 16924 [2022-02-10 03:35:06,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 55 SyntacticMatches, 7 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1518 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=955, Invalid=5051, Unknown=0, NotChecked=0, Total=6006 [2022-02-10 03:35:06,399 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 302 mSDsluCounter, 1645 mSDsCounter, 0 mSdLazyCounter, 1262 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 1441 SdHoareTripleChecker+Invalid, 1614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 256 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 03:35:06,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 1441 Invalid, 1614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1262 Invalid, 0 Unknown, 256 Unchecked, 0.7s Time] [2022-02-10 03:35:06,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16924 states. [2022-02-10 03:35:06,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16924 to 11786. [2022-02-10 03:35:06,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11786 states, 11785 states have (on average 1.448366567670768) internal successors, (17069), 11785 states have internal predecessors, (17069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:35:06,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11786 states to 11786 states and 17069 transitions. [2022-02-10 03:35:06,576 INFO L78 Accepts]: Start accepts. Automaton has 11786 states and 17069 transitions. Word has length 42 [2022-02-10 03:35:06,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:35:06,576 INFO L470 AbstractCegarLoop]: Abstraction has 11786 states and 17069 transitions. [2022-02-10 03:35:06,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.4358974358974357) internal successors, (95), 38 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) [2022-02-10 03:35:06,576 INFO L276 IsEmpty]: Start isEmpty. Operand 11786 states and 17069 transitions. [2022-02-10 03:35:06,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-02-10 03:35:06,584 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:35:06,584 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:35:06,600 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Ended with exit code 0 [2022-02-10 03:35:06,785 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 [2022-02-10 03:35:06,785 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:35:06,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:35:06,785 INFO L85 PathProgramCache]: Analyzing trace with hash -769046976, now seen corresponding path program 105 times [2022-02-10 03:35:06,785 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:35:06,785 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537569521] [2022-02-10 03:35:06,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:35:06,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:35:06,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:35:07,146 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:35:07,146 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:35:07,146 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537569521] [2022-02-10 03:35:07,146 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537569521] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:35:07,146 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913228074] [2022-02-10 03:35:07,146 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:35:07,146 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:35:07,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:35:07,147 INFO L229 MonitoredProcess]: Starting monitored process 108 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:35:07,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2022-02-10 03:35:07,172 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-02-10 03:35:07,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:35:07,174 WARN L261 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 65 conjunts are in the unsatisfiable core [2022-02-10 03:35:07,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:35:08,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:08,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:08,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:08,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:08,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:08,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:08,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:08,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:08,200 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:35:08,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:08,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:08,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:08,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:08,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:08,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:08,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:08,204 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:35:08,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:08,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:08,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:08,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:08,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:08,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:08,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:08,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:08,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:08,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:08,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:08,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:08,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:08,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:08,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:08,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:08,213 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:35:08,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:08,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:08,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:08,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:08,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:08,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:08,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:08,217 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:35:08,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:08,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:08,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:08,219 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:35:08,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:08,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:08,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:08,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:08,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:08,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:08,222 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:35:08,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:08,223 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:35:08,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:08,224 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 [2022-02-10 03:35:08,242 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:35:08,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:35:10,101 INFO L353 Elim1Store]: treesize reduction 756, result has 45.3 percent of original size [2022-02-10 03:35:10,101 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 [2022-02-10 03:35:12,364 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 6 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:35:12,364 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913228074] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:35:12,364 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:35:12,364 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 19] total 49 [2022-02-10 03:35:12,364 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375055321] [2022-02-10 03:35:12,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:35:12,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-02-10 03:35:12,365 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:35:12,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-02-10 03:35:12,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=2090, Unknown=0, NotChecked=0, Total=2450 [2022-02-10 03:35:12,365 INFO L87 Difference]: Start difference. First operand 11786 states and 17069 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) [2022-02-10 03:35:16,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:35:16,340 INFO L93 Difference]: Finished difference Result 24706 states and 35633 transitions. [2022-02-10 03:35:16,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-02-10 03:35:16,340 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 [2022-02-10 03:35:16,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:35:16,372 INFO L225 Difference]: With dead ends: 24706 [2022-02-10 03:35:16,372 INFO L226 Difference]: Without dead ends: 24459 [2022-02-10 03:35:16,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4377 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=2304, Invalid=11738, Unknown=0, NotChecked=0, Total=14042 [2022-02-10 03:35:16,374 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 389 mSDsluCounter, 2318 mSDsCounter, 0 mSdLazyCounter, 1499 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 1828 SdHoareTripleChecker+Invalid, 2008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 1499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 377 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-10 03:35:16,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [389 Valid, 1828 Invalid, 2008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 1499 Invalid, 0 Unknown, 377 Unchecked, 0.9s Time] [2022-02-10 03:35:16,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24459 states. [2022-02-10 03:35:16,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24459 to 12031. [2022-02-10 03:35:16,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12031 states, 12030 states have (on average 1.4440565253532835) internal successors, (17372), 12030 states have internal predecessors, (17372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:35:16,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12031 states to 12031 states and 17372 transitions. [2022-02-10 03:35:16,593 INFO L78 Accepts]: Start accepts. Automaton has 12031 states and 17372 transitions. Word has length 43 [2022-02-10 03:35:16,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:35:16,593 INFO L470 AbstractCegarLoop]: Abstraction has 12031 states and 17372 transitions. [2022-02-10 03:35:16,593 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) [2022-02-10 03:35:16,593 INFO L276 IsEmpty]: Start isEmpty. Operand 12031 states and 17372 transitions. [2022-02-10 03:35:16,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-02-10 03:35:16,602 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:35:16,602 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:35:16,618 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Ended with exit code 0 [2022-02-10 03:35:16,802 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 [2022-02-10 03:35:16,802 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:35:16,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:35:16,803 INFO L85 PathProgramCache]: Analyzing trace with hash 690924912, now seen corresponding path program 106 times [2022-02-10 03:35:16,803 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:35:16,803 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301841150] [2022-02-10 03:35:16,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:35:16,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:35:16,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:35:17,150 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:35:17,150 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:35:17,150 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301841150] [2022-02-10 03:35:17,150 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301841150] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:35:17,150 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152485807] [2022-02-10 03:35:17,150 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:35:17,150 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:35:17,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:35:17,151 INFO L229 MonitoredProcess]: Starting monitored process 109 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:35:17,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2022-02-10 03:35:17,175 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:35:17,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:35:17,176 WARN L261 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 65 conjunts are in the unsatisfiable core [2022-02-10 03:35:17,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:35:18,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:18,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:18,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:18,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:18,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:18,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:18,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:18,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:18,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:18,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:18,214 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:35:18,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:18,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:18,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:18,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:18,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:18,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:18,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:18,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:18,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:18,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:18,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:18,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:18,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:18,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:18,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:18,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:18,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:18,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:18,224 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:35:18,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:18,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:18,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:18,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:18,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:18,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:18,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:18,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:18,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:18,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:18,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:18,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:18,231 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:35:18,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:18,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:18,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:18,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:18,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:18,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:18,234 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:35:18,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:18,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:18,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:18,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:18,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:18,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:18,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:18,238 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:35:18,238 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:35:18,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:18,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:18,240 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:35:18,240 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 [2022-02-10 03:35:18,258 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:35:18,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:35:20,032 INFO L353 Elim1Store]: treesize reduction 756, result has 45.3 percent of original size [2022-02-10 03:35:20,032 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 [2022-02-10 03:35:22,138 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 12 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:35:22,138 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152485807] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:35:22,138 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:35:22,138 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 19] total 49 [2022-02-10 03:35:22,138 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549510542] [2022-02-10 03:35:22,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:35:22,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-02-10 03:35:22,138 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:35:22,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-02-10 03:35:22,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=2090, Unknown=0, NotChecked=0, Total=2450 [2022-02-10 03:35:22,139 INFO L87 Difference]: Start difference. First operand 12031 states and 17372 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) [2022-02-10 03:35:26,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:35:26,928 INFO L93 Difference]: Finished difference Result 18804 states and 26801 transitions. [2022-02-10 03:35:26,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2022-02-10 03:35:26,929 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 [2022-02-10 03:35:26,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:35:26,951 INFO L225 Difference]: With dead ends: 18804 [2022-02-10 03:35:26,951 INFO L226 Difference]: Without dead ends: 18786 [2022-02-10 03:35:26,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6715 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=2497, Invalid=18095, Unknown=0, NotChecked=0, Total=20592 [2022-02-10 03:35:26,953 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 306 mSDsluCounter, 1920 mSDsCounter, 0 mSdLazyCounter, 1292 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 1922 SdHoareTripleChecker+Invalid, 1844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 422 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-10 03:35:26,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 1922 Invalid, 1844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1292 Invalid, 0 Unknown, 422 Unchecked, 0.8s Time] [2022-02-10 03:35:26,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18786 states. [2022-02-10 03:35:27,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18786 to 13153. [2022-02-10 03:35:27,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13153 states, 13152 states have (on average 1.4436587591240877) internal successors, (18987), 13152 states have internal predecessors, (18987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:35:27,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13153 states to 13153 states and 18987 transitions. [2022-02-10 03:35:27,181 INFO L78 Accepts]: Start accepts. Automaton has 13153 states and 18987 transitions. Word has length 43 [2022-02-10 03:35:27,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:35:27,181 INFO L470 AbstractCegarLoop]: Abstraction has 13153 states and 18987 transitions. [2022-02-10 03:35:27,181 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) [2022-02-10 03:35:27,181 INFO L276 IsEmpty]: Start isEmpty. Operand 13153 states and 18987 transitions. [2022-02-10 03:35:27,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-02-10 03:35:27,189 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:35:27,189 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:35:27,206 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Forceful destruction successful, exit code 0 [2022-02-10 03:35:27,389 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 [2022-02-10 03:35:27,390 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:35:27,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:35:27,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1208060864, now seen corresponding path program 107 times [2022-02-10 03:35:27,390 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:35:27,390 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075260676] [2022-02-10 03:35:27,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:35:27,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:35:27,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:35:27,746 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:35:27,746 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:35:27,746 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075260676] [2022-02-10 03:35:27,746 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075260676] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:35:27,746 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455058901] [2022-02-10 03:35:27,746 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 03:35:27,746 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:35:27,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:35:27,747 INFO L229 MonitoredProcess]: Starting monitored process 110 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:35:27,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2022-02-10 03:35:27,772 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-10 03:35:27,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:35:27,773 WARN L261 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 65 conjunts are in the unsatisfiable core [2022-02-10 03:35:27,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:35:28,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:28,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:28,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:28,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:28,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:28,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:28,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:28,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:28,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:28,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:28,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:28,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:28,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:28,803 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:35:28,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:28,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:28,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:28,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:28,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:28,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:28,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:28,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:28,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:28,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:28,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:28,809 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:35:28,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:28,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:28,810 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:35:28,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:28,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:28,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:28,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:28,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:28,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:28,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:28,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:28,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:28,816 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:35:28,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:28,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:28,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:28,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:28,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:28,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:28,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:28,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:28,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:28,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:28,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:28,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:28,822 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:35:28,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:28,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:28,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:28,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:28,825 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:35:28,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:28,826 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:35:28,826 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 [2022-02-10 03:35:28,844 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:35:28,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:35:30,683 INFO L353 Elim1Store]: treesize reduction 756, result has 45.3 percent of original size [2022-02-10 03:35:30,683 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 [2022-02-10 03:35:32,819 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 9 proven. 103 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:35:32,819 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455058901] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:35:32,819 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:35:32,819 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 50 [2022-02-10 03:35:32,819 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703106000] [2022-02-10 03:35:32,819 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:35:32,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-02-10 03:35:32,820 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:35:32,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-02-10 03:35:32,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=368, Invalid=2182, Unknown=0, NotChecked=0, Total=2550 [2022-02-10 03:35:32,820 INFO L87 Difference]: Start difference. First operand 13153 states and 18987 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) [2022-02-10 03:35:36,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:35:36,981 INFO L93 Difference]: Finished difference Result 25556 states and 36635 transitions. [2022-02-10 03:35:36,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2022-02-10 03:35:36,982 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 [2022-02-10 03:35:36,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:35:37,021 INFO L225 Difference]: With dead ends: 25556 [2022-02-10 03:35:37,021 INFO L226 Difference]: Without dead ends: 25520 [2022-02-10 03:35:37,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5652 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=2677, Invalid=14615, Unknown=0, NotChecked=0, Total=17292 [2022-02-10 03:35:37,022 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 439 mSDsluCounter, 1876 mSDsCounter, 0 mSdLazyCounter, 1377 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 1711 SdHoareTripleChecker+Invalid, 1884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 1377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 352 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-10 03:35:37,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [439 Valid, 1711 Invalid, 1884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 1377 Invalid, 0 Unknown, 352 Unchecked, 0.8s Time] [2022-02-10 03:35:37,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25520 states. [2022-02-10 03:35:37,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25520 to 13270. [2022-02-10 03:35:37,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13270 states, 13269 states have (on average 1.4395206873163011) internal successors, (19101), 13269 states have internal predecessors, (19101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:35:37,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13270 states to 13270 states and 19101 transitions. [2022-02-10 03:35:37,265 INFO L78 Accepts]: Start accepts. Automaton has 13270 states and 19101 transitions. Word has length 43 [2022-02-10 03:35:37,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:35:37,265 INFO L470 AbstractCegarLoop]: Abstraction has 13270 states and 19101 transitions. [2022-02-10 03:35:37,265 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) [2022-02-10 03:35:37,265 INFO L276 IsEmpty]: Start isEmpty. Operand 13270 states and 19101 transitions. [2022-02-10 03:35:37,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-02-10 03:35:37,273 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:35:37,273 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:35:37,290 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Forceful destruction successful, exit code 0 [2022-02-10 03:35:37,474 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 [2022-02-10 03:35:37,474 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:35:37,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:35:37,474 INFO L85 PathProgramCache]: Analyzing trace with hash 713852032, now seen corresponding path program 108 times [2022-02-10 03:35:37,474 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:35:37,474 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599456462] [2022-02-10 03:35:37,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:35:37,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:35:37,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:35:37,815 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:35:37,815 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:35:37,815 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599456462] [2022-02-10 03:35:37,816 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599456462] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:35:37,816 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441875234] [2022-02-10 03:35:37,816 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 03:35:37,816 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:35:37,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:35:37,817 INFO L229 MonitoredProcess]: Starting monitored process 111 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:35:37,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2022-02-10 03:35:37,841 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-02-10 03:35:37,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:35:37,842 WARN L261 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 65 conjunts are in the unsatisfiable core [2022-02-10 03:35:37,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:35:38,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:38,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:38,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:38,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:38,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:38,884 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:35:38,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:38,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:38,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:38,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:38,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:38,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:38,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:38,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:38,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:38,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:38,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:38,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:38,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:38,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:38,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:38,892 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:35:38,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:38,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:38,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:38,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:38,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:38,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:38,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:38,896 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:35:38,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:38,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:38,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:38,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:38,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:38,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:38,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:38,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:38,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:38,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:38,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:38,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:38,903 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:35:38,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:38,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:38,905 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:35:38,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:38,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:38,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:38,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:38,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:38,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:38,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:38,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:38,909 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:35:38,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:38,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:38,911 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:35:38,912 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 [2022-02-10 03:35:38,930 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:35:38,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:35:40,775 INFO L353 Elim1Store]: treesize reduction 756, result has 45.3 percent of original size [2022-02-10 03:35:40,775 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 [2022-02-10 03:35:43,138 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 6 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:35:43,138 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441875234] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:35:43,138 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:35:43,138 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 19] total 49 [2022-02-10 03:35:43,138 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718775555] [2022-02-10 03:35:43,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:35:43,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-02-10 03:35:43,139 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:35:43,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-02-10 03:35:43,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=363, Invalid=2087, Unknown=0, NotChecked=0, Total=2450 [2022-02-10 03:35:43,139 INFO L87 Difference]: Start difference. First operand 13270 states and 19101 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) [2022-02-10 03:35:46,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:35:46,034 INFO L93 Difference]: Finished difference Result 18640 states and 26756 transitions. [2022-02-10 03:35:46,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-02-10 03:35:46,035 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 [2022-02-10 03:35:46,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:35:46,060 INFO L225 Difference]: With dead ends: 18640 [2022-02-10 03:35:46,060 INFO L226 Difference]: Without dead ends: 18422 [2022-02-10 03:35:46,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2733 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1467, Invalid=7845, Unknown=0, NotChecked=0, Total=9312 [2022-02-10 03:35:46,061 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 336 mSDsluCounter, 2564 mSDsCounter, 0 mSdLazyCounter, 1593 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 1991 SdHoareTripleChecker+Invalid, 2189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 498 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-10 03:35:46,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [336 Valid, 1991 Invalid, 2189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1593 Invalid, 0 Unknown, 498 Unchecked, 0.9s Time] [2022-02-10 03:35:46,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18422 states. [2022-02-10 03:35:46,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18422 to 13675. [2022-02-10 03:35:46,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13675 states, 13674 states have (on average 1.4383501535761298) internal successors, (19668), 13674 states have internal predecessors, (19668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:35:46,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13675 states to 13675 states and 19668 transitions. [2022-02-10 03:35:46,255 INFO L78 Accepts]: Start accepts. Automaton has 13675 states and 19668 transitions. Word has length 43 [2022-02-10 03:35:46,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:35:46,255 INFO L470 AbstractCegarLoop]: Abstraction has 13675 states and 19668 transitions. [2022-02-10 03:35:46,255 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) [2022-02-10 03:35:46,255 INFO L276 IsEmpty]: Start isEmpty. Operand 13675 states and 19668 transitions. [2022-02-10 03:35:46,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-02-10 03:35:46,263 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:35:46,263 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:35:46,279 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Ended with exit code 0 [2022-02-10 03:35:46,464 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 [2022-02-10 03:35:46,464 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:35:46,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:35:46,464 INFO L85 PathProgramCache]: Analyzing trace with hash -2121143376, now seen corresponding path program 109 times [2022-02-10 03:35:46,464 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:35:46,464 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287986611] [2022-02-10 03:35:46,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:35:46,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:35:46,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:35:46,831 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:35:46,832 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:35:46,832 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287986611] [2022-02-10 03:35:46,832 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287986611] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:35:46,832 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938170075] [2022-02-10 03:35:46,832 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 03:35:46,832 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:35:46,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:35:46,833 INFO L229 MonitoredProcess]: Starting monitored process 112 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:35:46,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2022-02-10 03:35:46,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:35:46,856 WARN L261 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 65 conjunts are in the unsatisfiable core [2022-02-10 03:35:46,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:35:47,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:47,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:47,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:47,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:47,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:47,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:47,898 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:35:47,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:47,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:47,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:47,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:47,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:47,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:47,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:47,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:47,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:47,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:47,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:47,904 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:35:47,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:47,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:47,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:47,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:47,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:47,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:47,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:47,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:47,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:47,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:47,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:47,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:47,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:47,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:47,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:47,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:47,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:47,913 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:35:47,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:47,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:47,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:47,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:47,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:47,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:47,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:47,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:47,918 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:35:47,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:47,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:47,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:47,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:47,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:47,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:47,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:47,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:47,922 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:35:47,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:47,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:47,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:47,924 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:35:47,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:47,925 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:35:47,926 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 [2022-02-10 03:35:47,947 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:35:47,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:35:49,747 INFO L353 Elim1Store]: treesize reduction 756, result has 45.3 percent of original size [2022-02-10 03:35:49,748 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 [2022-02-10 03:35:51,994 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 9 proven. 103 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:35:51,994 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938170075] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:35:51,994 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:35:51,994 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 50 [2022-02-10 03:35:51,994 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253136770] [2022-02-10 03:35:51,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:35:51,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-02-10 03:35:51,995 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:35:51,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-02-10 03:35:51,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=372, Invalid=2178, Unknown=0, NotChecked=0, Total=2550 [2022-02-10 03:35:51,995 INFO L87 Difference]: Start difference. First operand 13675 states and 19668 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) [2022-02-10 03:35:54,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:35:54,652 INFO L93 Difference]: Finished difference Result 18404 states and 26344 transitions. [2022-02-10 03:35:54,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-02-10 03:35:54,652 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 [2022-02-10 03:35:54,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:35:54,677 INFO L225 Difference]: With dead ends: 18404 [2022-02-10 03:35:54,677 INFO L226 Difference]: Without dead ends: 18368 [2022-02-10 03:35:54,678 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2991 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1435, Invalid=8665, Unknown=0, NotChecked=0, Total=10100 [2022-02-10 03:35:54,678 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 320 mSDsluCounter, 2063 mSDsCounter, 0 mSdLazyCounter, 1393 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 1848 SdHoareTripleChecker+Invalid, 2122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 620 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-10 03:35:54,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [320 Valid, 1848 Invalid, 2122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1393 Invalid, 0 Unknown, 620 Unchecked, 0.8s Time] [2022-02-10 03:35:54,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18368 states. [2022-02-10 03:35:54,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18368 to 13541. [2022-02-10 03:35:54,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13541 states, 13540 states have (on average 1.4396602658788773) internal successors, (19493), 13540 states have internal predecessors, (19493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:35:54,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13541 states to 13541 states and 19493 transitions. [2022-02-10 03:35:54,887 INFO L78 Accepts]: Start accepts. Automaton has 13541 states and 19493 transitions. Word has length 43 [2022-02-10 03:35:54,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:35:54,887 INFO L470 AbstractCegarLoop]: Abstraction has 13541 states and 19493 transitions. [2022-02-10 03:35:54,887 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) [2022-02-10 03:35:54,887 INFO L276 IsEmpty]: Start isEmpty. Operand 13541 states and 19493 transitions. [2022-02-10 03:35:54,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-02-10 03:35:54,896 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:35:54,896 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:35:54,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Forceful destruction successful, exit code 0 [2022-02-10 03:35:55,096 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 [2022-02-10 03:35:55,096 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:35:55,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:35:55,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1116775600, now seen corresponding path program 110 times [2022-02-10 03:35:55,097 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:35:55,097 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861553294] [2022-02-10 03:35:55,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:35:55,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:35:55,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:35:55,442 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-10 03:35:55,442 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:35:55,442 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861553294] [2022-02-10 03:35:55,442 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861553294] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:35:55,442 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480657311] [2022-02-10 03:35:55,442 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:35:55,442 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:35:55,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:35:55,443 INFO L229 MonitoredProcess]: Starting monitored process 113 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:35:55,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2022-02-10 03:35:55,465 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:35:55,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:35:55,467 WARN L261 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 65 conjunts are in the unsatisfiable core [2022-02-10 03:35:55,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:35:56,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:56,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:56,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:56,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:56,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:56,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:56,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:56,469 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:35:56,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:56,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:56,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:56,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:56,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:56,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:56,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:56,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:56,474 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:35:56,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:56,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:56,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:56,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:56,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:56,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:56,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:56,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:56,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:56,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:56,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:56,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:56,481 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:35:56,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:56,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:56,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:56,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:56,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:56,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:56,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:56,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:56,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:56,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:56,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:56,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:56,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:56,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:56,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:56,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:56,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:56,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:56,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:56,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:56,492 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:35:56,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:56,493 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:35:56,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:56,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:56,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:56,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:56,496 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:35:56,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:35:56,496 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:35:56,497 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 [2022-02-10 03:35:56,517 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 4 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:35:56,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:35:58,304 INFO L353 Elim1Store]: treesize reduction 756, result has 45.3 percent of original size [2022-02-10 03:35:58,304 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 [2022-02-10 03:36:00,586 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 12 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:36:00,586 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480657311] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:36:00,586 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:36:00,586 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 19, 19] total 46 [2022-02-10 03:36:00,587 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927773702] [2022-02-10 03:36:00,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:36:00,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-10 03:36:00,587 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:36:00,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-10 03:36:00,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=363, Invalid=1799, Unknown=0, NotChecked=0, Total=2162 [2022-02-10 03:36:00,587 INFO L87 Difference]: Start difference. First operand 13541 states and 19493 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) [2022-02-10 03:36:03,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:36:03,528 INFO L93 Difference]: Finished difference Result 17337 states and 24738 transitions. [2022-02-10 03:36:03,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-02-10 03:36:03,528 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 [2022-02-10 03:36:03,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:36:03,551 INFO L225 Difference]: With dead ends: 17337 [2022-02-10 03:36:03,551 INFO L226 Difference]: Without dead ends: 17019 [2022-02-10 03:36:03,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 54 SyntacticMatches, 4 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2090 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1066, Invalid=5906, Unknown=0, NotChecked=0, Total=6972 [2022-02-10 03:36:03,552 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 584 mSDsluCounter, 3049 mSDsCounter, 0 mSdLazyCounter, 2137 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 2148 SdHoareTripleChecker+Invalid, 2467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 2137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 181 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:36:03,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [584 Valid, 2148 Invalid, 2467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 2137 Invalid, 0 Unknown, 181 Unchecked, 1.1s Time] [2022-02-10 03:36:03,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17019 states. [2022-02-10 03:36:03,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17019 to 14503. [2022-02-10 03:36:03,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14503 states, 14502 states have (on average 1.4426975589573852) internal successors, (20922), 14502 states have internal predecessors, (20922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:36:03,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14503 states to 14503 states and 20922 transitions. [2022-02-10 03:36:03,769 INFO L78 Accepts]: Start accepts. Automaton has 14503 states and 20922 transitions. Word has length 43 [2022-02-10 03:36:03,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:36:03,769 INFO L470 AbstractCegarLoop]: Abstraction has 14503 states and 20922 transitions. [2022-02-10 03:36:03,769 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) [2022-02-10 03:36:03,769 INFO L276 IsEmpty]: Start isEmpty. Operand 14503 states and 20922 transitions. [2022-02-10 03:36:03,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-02-10 03:36:03,778 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:36:03,778 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:36:03,794 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Ended with exit code 0 [2022-02-10 03:36:03,979 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 [2022-02-10 03:36:03,979 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:36:03,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:36:03,979 INFO L85 PathProgramCache]: Analyzing trace with hash 807918208, now seen corresponding path program 111 times [2022-02-10 03:36:03,979 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:36:03,979 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715091869] [2022-02-10 03:36:03,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:36:03,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:36:03,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:36:04,330 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:36:04,330 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:36:04,330 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715091869] [2022-02-10 03:36:04,330 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715091869] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:36:04,330 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051502312] [2022-02-10 03:36:04,330 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:36:04,330 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:36:04,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:36:04,331 INFO L229 MonitoredProcess]: Starting monitored process 114 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:36:04,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2022-02-10 03:36:04,357 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-02-10 03:36:04,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:36:04,358 WARN L261 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 65 conjunts are in the unsatisfiable core [2022-02-10 03:36:04,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:36:05,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:05,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:05,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:05,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:05,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:05,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:05,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:05,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:05,359 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:05,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:05,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:05,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:05,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:05,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:05,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:05,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:05,363 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:05,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:05,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:05,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:05,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:05,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:05,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:05,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:05,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:05,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:05,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:05,369 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:05,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:05,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:05,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:05,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:05,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:05,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:05,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:05,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:05,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:05,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:05,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:05,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:05,376 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:05,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:05,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:05,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:05,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:05,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:05,379 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:05,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:05,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:05,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:05,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:05,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:05,382 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:05,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:05,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:05,383 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:05,384 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 [2022-02-10 03:36:05,403 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:36:05,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:36:07,219 INFO L353 Elim1Store]: treesize reduction 756, result has 45.3 percent of original size [2022-02-10 03:36:07,219 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 [2022-02-10 03:36:09,205 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 12 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:36:09,205 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051502312] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:36:09,205 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:36:09,205 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 19, 19] total 47 [2022-02-10 03:36:09,206 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29703532] [2022-02-10 03:36:09,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:36:09,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-10 03:36:09,206 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:36:09,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-10 03:36:09,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=1889, Unknown=0, NotChecked=0, Total=2256 [2022-02-10 03:36:09,206 INFO L87 Difference]: Start difference. First operand 14503 states and 20922 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) [2022-02-10 03:36:12,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:36:12,093 INFO L93 Difference]: Finished difference Result 18280 states and 26135 transitions. [2022-02-10 03:36:12,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-02-10 03:36:12,094 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 [2022-02-10 03:36:12,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:36:12,115 INFO L225 Difference]: With dead ends: 18280 [2022-02-10 03:36:12,115 INFO L226 Difference]: Without dead ends: 18193 [2022-02-10 03:36:12,116 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 58 SyntacticMatches, 3 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2705 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1347, Invalid=7395, Unknown=0, NotChecked=0, Total=8742 [2022-02-10 03:36:12,116 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 297 mSDsluCounter, 1927 mSDsCounter, 0 mSdLazyCounter, 1463 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 1628 SdHoareTripleChecker+Invalid, 1730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 1463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 131 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-10 03:36:12,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 1628 Invalid, 1730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 1463 Invalid, 0 Unknown, 131 Unchecked, 0.8s Time] [2022-02-10 03:36:12,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18193 states. [2022-02-10 03:36:12,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18193 to 14527. [2022-02-10 03:36:12,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14527 states, 14526 states have (on average 1.4421038138510258) internal successors, (20948), 14526 states have internal predecessors, (20948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:36:12,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14527 states to 14527 states and 20948 transitions. [2022-02-10 03:36:12,311 INFO L78 Accepts]: Start accepts. Automaton has 14527 states and 20948 transitions. Word has length 43 [2022-02-10 03:36:12,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:36:12,311 INFO L470 AbstractCegarLoop]: Abstraction has 14527 states and 20948 transitions. [2022-02-10 03:36:12,311 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) [2022-02-10 03:36:12,311 INFO L276 IsEmpty]: Start isEmpty. Operand 14527 states and 20948 transitions. [2022-02-10 03:36:12,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-02-10 03:36:12,320 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:36:12,320 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:36:12,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Forceful destruction successful, exit code 0 [2022-02-10 03:36:12,521 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 [2022-02-10 03:36:12,521 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:36:12,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:36:12,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1043533440, now seen corresponding path program 112 times [2022-02-10 03:36:12,521 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:36:12,521 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66465738] [2022-02-10 03:36:12,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:36:12,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:36:12,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:36:12,897 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:36:12,898 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:36:12,898 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66465738] [2022-02-10 03:36:12,898 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66465738] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:36:12,898 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668608458] [2022-02-10 03:36:12,898 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:36:12,898 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:36:12,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:36:12,899 INFO L229 MonitoredProcess]: Starting monitored process 115 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:36:12,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2022-02-10 03:36:12,922 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:36:12,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:36:12,923 WARN L261 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 65 conjunts are in the unsatisfiable core [2022-02-10 03:36:12,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:36:13,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:13,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:13,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:13,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:13,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:13,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:13,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:13,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:13,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:13,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:13,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:13,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:13,990 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:13,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:13,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:13,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:13,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:13,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:13,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:13,993 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:13,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:13,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:13,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:13,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:13,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:13,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:13,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:13,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:13,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:13,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:13,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:14,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:14,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:14,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:14,001 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:14,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:14,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:14,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:14,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:14,003 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:14,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:14,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:14,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:14,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:14,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:14,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:14,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:14,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:14,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:14,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:14,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:14,009 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:14,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:14,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:14,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:14,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:14,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:14,012 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:14,013 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:14,013 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 [2022-02-10 03:36:14,031 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:36:14,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:36:15,827 INFO L353 Elim1Store]: treesize reduction 756, result has 45.3 percent of original size [2022-02-10 03:36:15,827 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 [2022-02-10 03:36:18,784 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 12 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:36:18,784 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668608458] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:36:18,784 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:36:18,784 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 50 [2022-02-10 03:36:18,784 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464413145] [2022-02-10 03:36:18,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:36:18,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-02-10 03:36:18,784 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:36:18,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-02-10 03:36:18,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=374, Invalid=2176, Unknown=0, NotChecked=0, Total=2550 [2022-02-10 03:36:18,785 INFO L87 Difference]: Start difference. First operand 14527 states and 20948 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) [2022-02-10 03:36:22,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:36:22,191 INFO L93 Difference]: Finished difference Result 20205 states and 29071 transitions. [2022-02-10 03:36:22,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-02-10 03:36:22,191 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 [2022-02-10 03:36:22,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:36:22,218 INFO L225 Difference]: With dead ends: 20205 [2022-02-10 03:36:22,218 INFO L226 Difference]: Without dead ends: 20021 [2022-02-10 03:36:22,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4190 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1754, Invalid=11818, Unknown=0, NotChecked=0, Total=13572 [2022-02-10 03:36:22,220 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 411 mSDsluCounter, 2373 mSDsCounter, 0 mSdLazyCounter, 1454 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 1962 SdHoareTripleChecker+Invalid, 2209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 634 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-10 03:36:22,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [411 Valid, 1962 Invalid, 2209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1454 Invalid, 0 Unknown, 634 Unchecked, 0.9s Time] [2022-02-10 03:36:22,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20021 states. [2022-02-10 03:36:22,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20021 to 14816. [2022-02-10 03:36:22,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14816 states, 14815 states have (on average 1.4428619642254472) internal successors, (21376), 14815 states have internal predecessors, (21376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:36:22,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14816 states to 14816 states and 21376 transitions. [2022-02-10 03:36:22,440 INFO L78 Accepts]: Start accepts. Automaton has 14816 states and 21376 transitions. Word has length 43 [2022-02-10 03:36:22,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:36:22,440 INFO L470 AbstractCegarLoop]: Abstraction has 14816 states and 21376 transitions. [2022-02-10 03:36:22,441 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) [2022-02-10 03:36:22,441 INFO L276 IsEmpty]: Start isEmpty. Operand 14816 states and 21376 transitions. [2022-02-10 03:36:22,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-02-10 03:36:22,450 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:36:22,450 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:36:22,466 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Ended with exit code 0 [2022-02-10 03:36:22,650 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 [2022-02-10 03:36:22,650 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:36:22,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:36:22,651 INFO L85 PathProgramCache]: Analyzing trace with hash 990717632, now seen corresponding path program 113 times [2022-02-10 03:36:22,651 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:36:22,651 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684347088] [2022-02-10 03:36:22,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:36:22,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:36:22,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:36:22,973 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-10 03:36:22,973 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:36:22,973 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684347088] [2022-02-10 03:36:22,973 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684347088] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:36:22,973 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441079307] [2022-02-10 03:36:22,973 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 03:36:22,973 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:36:22,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:36:22,974 INFO L229 MonitoredProcess]: Starting monitored process 116 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:36:22,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2022-02-10 03:36:23,002 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-02-10 03:36:23,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:36:23,003 WARN L261 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 63 conjunts are in the unsatisfiable core [2022-02-10 03:36:23,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:36:24,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:24,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:24,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:24,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:24,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:24,936 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:24,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:24,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:24,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:24,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:24,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:24,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:24,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:24,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:24,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:24,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:24,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:24,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:24,943 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:24,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:24,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:24,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:24,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:24,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:24,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:24,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:24,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:24,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:24,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:24,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:24,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:24,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:24,951 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:24,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:24,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:24,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:24,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:24,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:24,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:24,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:24,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:24,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:24,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:24,956 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:24,957 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:24,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:24,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:24,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:24,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:24,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:24,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:24,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:24,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:24,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:24,962 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:24,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:24,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:24,963 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:24,964 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 129 treesize of output 47 [2022-02-10 03:36:24,982 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 9 proven. 103 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:36:24,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:36:26,652 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,654 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,655 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,656 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,656 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,657 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,657 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,658 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,659 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,659 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,660 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,660 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,660 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,661 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,661 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,662 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,662 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,662 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,663 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,665 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,665 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,666 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,667 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,668 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,668 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,669 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,669 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,670 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,670 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,671 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,672 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,672 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,672 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,673 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,680 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,680 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,680 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,681 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,681 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,682 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,683 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,684 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,684 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,685 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,685 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,686 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,687 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,687 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,688 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,689 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,689 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,689 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,689 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,690 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,691 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,691 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,691 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,692 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,693 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,694 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,694 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,694 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,695 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,695 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,695 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,696 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,697 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,697 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,698 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,698 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:26,699 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:27,086 INFO L353 Elim1Store]: treesize reduction 143, result has 72.4 percent of original size [2022-02-10 03:36:27,086 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 16 select indices, 16 select index equivalence classes, 71 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 49 case distinctions, treesize of input 140 treesize of output 433 [2022-02-10 03:36:28,023 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:36:28,024 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441079307] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:36:28,024 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:36:28,024 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 19, 19] total 48 [2022-02-10 03:36:28,024 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817756239] [2022-02-10 03:36:28,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:36:28,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-02-10 03:36:28,024 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:36:28,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-02-10 03:36:28,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=471, Invalid=1881, Unknown=0, NotChecked=0, Total=2352 [2022-02-10 03:36:28,025 INFO L87 Difference]: Start difference. First operand 14816 states and 21376 transitions. Second operand has 49 states, 49 states have (on average 2.2857142857142856) internal successors, (112), 48 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:36:37,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:36:37,552 INFO L93 Difference]: Finished difference Result 16861 states and 24120 transitions. [2022-02-10 03:36:37,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-02-10 03:36:37,552 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.2857142857142856) internal successors, (112), 48 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have 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 [2022-02-10 03:36:37,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:36:37,570 INFO L225 Difference]: With dead ends: 16861 [2022-02-10 03:36:37,570 INFO L226 Difference]: Without dead ends: 16753 [2022-02-10 03:36:37,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 75 SyntacticMatches, 15 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3517 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=2701, Invalid=10639, Unknown=0, NotChecked=0, Total=13340 [2022-02-10 03:36:37,571 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 705 mSDsluCounter, 3243 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 2225 SdHoareTripleChecker+Invalid, 2677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2097 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:36:37,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [705 Valid, 2225 Invalid, 2677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 512 Invalid, 0 Unknown, 2097 Unchecked, 0.3s Time] [2022-02-10 03:36:37,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16753 states. [2022-02-10 03:36:37,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16753 to 15684. [2022-02-10 03:36:37,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15684 states, 15683 states have (on average 1.4446215647516418) internal successors, (22656), 15683 states have internal predecessors, (22656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:36:37,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15684 states to 15684 states and 22656 transitions. [2022-02-10 03:36:37,747 INFO L78 Accepts]: Start accepts. Automaton has 15684 states and 22656 transitions. Word has length 43 [2022-02-10 03:36:37,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:36:37,747 INFO L470 AbstractCegarLoop]: Abstraction has 15684 states and 22656 transitions. [2022-02-10 03:36:37,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.2857142857142856) internal successors, (112), 48 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:36:37,747 INFO L276 IsEmpty]: Start isEmpty. Operand 15684 states and 22656 transitions. [2022-02-10 03:36:37,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-02-10 03:36:37,756 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:36:37,756 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:36:37,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Forceful destruction successful, exit code 0 [2022-02-10 03:36:37,956 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 [2022-02-10 03:36:37,956 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:36:37,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:36:37,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1379555856, now seen corresponding path program 114 times [2022-02-10 03:36:37,957 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:36:37,957 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550917855] [2022-02-10 03:36:37,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:36:37,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:36:37,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:36:38,315 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:36:38,315 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:36:38,315 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550917855] [2022-02-10 03:36:38,315 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550917855] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:36:38,315 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002023453] [2022-02-10 03:36:38,315 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 03:36:38,315 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:36:38,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:36:38,316 INFO L229 MonitoredProcess]: Starting monitored process 117 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:36:38,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2022-02-10 03:36:38,343 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-02-10 03:36:38,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:36:38,344 WARN L261 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 65 conjunts are in the unsatisfiable core [2022-02-10 03:36:38,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:36:39,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:39,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:39,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:39,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:39,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:39,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:39,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:39,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:39,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:39,353 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:39,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:39,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:39,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:39,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:39,356 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:39,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:39,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:39,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:39,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:39,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:39,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:39,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:39,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:39,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:39,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:39,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:39,362 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:39,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:39,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:39,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:39,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:39,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:39,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:39,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:39,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:39,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:39,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:39,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:39,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:39,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:39,372 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:39,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:39,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:39,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:39,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:39,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:39,376 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:39,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:39,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:39,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:39,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:39,379 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:39,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:39,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:39,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:39,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:39,381 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:39,382 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 [2022-02-10 03:36:39,403 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:36:39,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:36:41,207 INFO L353 Elim1Store]: treesize reduction 756, result has 45.3 percent of original size [2022-02-10 03:36:41,207 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 [2022-02-10 03:36:43,649 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 18 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:36:43,649 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002023453] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:36:43,649 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:36:43,649 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 19, 19] total 47 [2022-02-10 03:36:43,649 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917713310] [2022-02-10 03:36:43,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:36:43,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-10 03:36:43,650 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:36:43,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-10 03:36:43,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=369, Invalid=1887, Unknown=0, NotChecked=0, Total=2256 [2022-02-10 03:36:43,650 INFO L87 Difference]: Start difference. First operand 15684 states and 22656 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) [2022-02-10 03:36:45,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:36:45,923 INFO L93 Difference]: Finished difference Result 19968 states and 28560 transitions. [2022-02-10 03:36:45,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-02-10 03:36:45,923 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 [2022-02-10 03:36:45,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:36:45,948 INFO L225 Difference]: With dead ends: 19968 [2022-02-10 03:36:45,948 INFO L226 Difference]: Without dead ends: 19568 [2022-02-10 03:36:45,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 54 SyntacticMatches, 3 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1630 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=843, Invalid=4857, Unknown=0, NotChecked=0, Total=5700 [2022-02-10 03:36:45,949 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 512 mSDsluCounter, 2765 mSDsCounter, 0 mSdLazyCounter, 1867 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 1849 SdHoareTripleChecker+Invalid, 2254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 261 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-10 03:36:45,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [512 Valid, 1849 Invalid, 2254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1867 Invalid, 0 Unknown, 261 Unchecked, 1.0s Time] [2022-02-10 03:36:45,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19568 states. [2022-02-10 03:36:46,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19568 to 15661. [2022-02-10 03:36:46,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15661 states, 15660 states have (on average 1.4448914431673052) internal successors, (22627), 15660 states have internal predecessors, (22627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:36:46,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15661 states to 15661 states and 22627 transitions. [2022-02-10 03:36:46,167 INFO L78 Accepts]: Start accepts. Automaton has 15661 states and 22627 transitions. Word has length 43 [2022-02-10 03:36:46,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:36:46,167 INFO L470 AbstractCegarLoop]: Abstraction has 15661 states and 22627 transitions. [2022-02-10 03:36:46,167 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) [2022-02-10 03:36:46,167 INFO L276 IsEmpty]: Start isEmpty. Operand 15661 states and 22627 transitions. [2022-02-10 03:36:46,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-02-10 03:36:46,177 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:36:46,177 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:36:46,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Forceful destruction successful, exit code 0 [2022-02-10 03:36:46,378 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 [2022-02-10 03:36:46,378 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:36:46,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:36:46,378 INFO L85 PathProgramCache]: Analyzing trace with hash 951222256, now seen corresponding path program 115 times [2022-02-10 03:36:46,379 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:36:46,379 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447038581] [2022-02-10 03:36:46,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:36:46,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:36:46,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:36:46,810 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:36:46,810 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:36:46,810 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447038581] [2022-02-10 03:36:46,811 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447038581] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:36:46,811 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913424845] [2022-02-10 03:36:46,811 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 03:36:46,811 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:36:46,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:36:46,812 INFO L229 MonitoredProcess]: Starting monitored process 118 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:36:46,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2022-02-10 03:36:46,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:36:46,835 WARN L261 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 65 conjunts are in the unsatisfiable core [2022-02-10 03:36:46,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:36:47,859 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:47,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:47,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:47,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:47,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:47,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:47,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:47,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:47,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:47,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:47,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:47,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:47,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:47,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:47,866 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:47,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:47,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:47,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:47,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:47,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:47,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:47,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:47,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:47,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:47,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:47,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:47,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:47,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:47,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:47,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:47,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:47,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:47,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:47,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:47,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:47,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:47,878 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:47,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:47,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:47,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:47,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:47,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:47,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:47,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:47,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:47,882 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:47,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:47,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:47,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:47,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:47,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:47,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:47,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:47,886 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:47,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:47,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:47,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:47,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:47,889 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:47,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:47,889 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:47,890 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 [2022-02-10 03:36:47,908 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:36:47,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:36:49,714 INFO L353 Elim1Store]: treesize reduction 756, result has 45.3 percent of original size [2022-02-10 03:36:49,714 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 [2022-02-10 03:36:51,923 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 18 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:36:51,923 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913424845] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:36:51,923 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:36:51,923 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 19] total 49 [2022-02-10 03:36:51,923 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371196024] [2022-02-10 03:36:51,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:36:51,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-02-10 03:36:51,923 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:36:51,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-02-10 03:36:51,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=2068, Unknown=0, NotChecked=0, Total=2450 [2022-02-10 03:36:51,924 INFO L87 Difference]: Start difference. First operand 15661 states and 22627 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) [2022-02-10 03:36:54,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:36:54,382 INFO L93 Difference]: Finished difference Result 21692 states and 31106 transitions. [2022-02-10 03:36:54,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-02-10 03:36:54,383 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 [2022-02-10 03:36:54,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:36:54,410 INFO L225 Difference]: With dead ends: 21692 [2022-02-10 03:36:54,410 INFO L226 Difference]: Without dead ends: 21593 [2022-02-10 03:36:54,410 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 52 SyntacticMatches, 3 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2244 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1102, Invalid=6730, Unknown=0, NotChecked=0, Total=7832 [2022-02-10 03:36:54,411 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 269 mSDsluCounter, 2365 mSDsCounter, 0 mSdLazyCounter, 1635 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 1981 SdHoareTripleChecker+Invalid, 2270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 527 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-10 03:36:54,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [269 Valid, 1981 Invalid, 2270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1635 Invalid, 0 Unknown, 527 Unchecked, 0.9s Time] [2022-02-10 03:36:54,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21593 states. [2022-02-10 03:36:54,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21593 to 15473. [2022-02-10 03:36:54,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15473 states, 15472 states have (on average 1.4447388831437435) internal successors, (22353), 15472 states have internal predecessors, (22353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:36:54,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15473 states to 15473 states and 22353 transitions. [2022-02-10 03:36:54,665 INFO L78 Accepts]: Start accepts. Automaton has 15473 states and 22353 transitions. Word has length 43 [2022-02-10 03:36:54,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:36:54,665 INFO L470 AbstractCegarLoop]: Abstraction has 15473 states and 22353 transitions. [2022-02-10 03:36:54,665 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) [2022-02-10 03:36:54,665 INFO L276 IsEmpty]: Start isEmpty. Operand 15473 states and 22353 transitions. [2022-02-10 03:36:54,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-02-10 03:36:54,674 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:36:54,674 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:36:54,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Forceful destruction successful, exit code 0 [2022-02-10 03:36:54,874 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 [2022-02-10 03:36:54,874 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:36:54,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:36:54,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1143940624, now seen corresponding path program 116 times [2022-02-10 03:36:54,874 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:36:54,875 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680106831] [2022-02-10 03:36:54,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:36:54,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:36:54,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:36:55,260 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:36:55,260 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:36:55,260 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680106831] [2022-02-10 03:36:55,260 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680106831] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:36:55,260 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923853011] [2022-02-10 03:36:55,260 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:36:55,260 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:36:55,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:36:55,261 INFO L229 MonitoredProcess]: Starting monitored process 119 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:36:55,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Waiting until timeout for monitored process [2022-02-10 03:36:55,284 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:36:55,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:36:55,285 WARN L261 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 65 conjunts are in the unsatisfiable core [2022-02-10 03:36:55,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:36:56,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:56,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:56,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:56,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:56,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:56,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:56,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:56,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:56,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:56,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:56,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:56,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:56,300 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:56,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:56,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:56,301 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:56,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:56,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:56,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:56,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:56,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:56,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:56,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:56,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:56,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:56,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:56,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:56,307 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:56,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:56,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:56,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:56,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:56,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:56,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:56,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:56,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:56,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:56,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:56,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:56,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:56,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:56,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:56,315 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:56,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:56,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:56,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:56,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:56,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:56,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:56,318 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:56,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:56,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:56,320 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:56,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:56,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:36:56,321 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:36:56,322 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 [2022-02-10 03:36:56,339 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:36:56,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:36:58,204 INFO L353 Elim1Store]: treesize reduction 756, result has 45.3 percent of original size [2022-02-10 03:36:58,204 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 [2022-02-10 03:37:00,470 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 18 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:37:00,470 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923853011] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:37:00,470 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:37:00,470 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 50 [2022-02-10 03:37:00,470 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584981255] [2022-02-10 03:37:00,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:37:00,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-02-10 03:37:00,471 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:37:00,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-02-10 03:37:00,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=2172, Unknown=0, NotChecked=0, Total=2550 [2022-02-10 03:37:00,471 INFO L87 Difference]: Start difference. First operand 15473 states and 22353 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) [2022-02-10 03:37:04,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:37:04,758 INFO L93 Difference]: Finished difference Result 20465 states and 29440 transitions. [2022-02-10 03:37:04,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2022-02-10 03:37:04,759 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 [2022-02-10 03:37:04,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:37:04,786 INFO L225 Difference]: With dead ends: 20465 [2022-02-10 03:37:04,786 INFO L226 Difference]: Without dead ends: 20404 [2022-02-10 03:37:04,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6147 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=2741, Invalid=15349, Unknown=0, NotChecked=0, Total=18090 [2022-02-10 03:37:04,787 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 296 mSDsluCounter, 2128 mSDsCounter, 0 mSdLazyCounter, 1512 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 2078 SdHoareTripleChecker+Invalid, 2255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 644 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-10 03:37:04,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 2078 Invalid, 2255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1512 Invalid, 0 Unknown, 644 Unchecked, 0.9s Time] [2022-02-10 03:37:04,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20404 states. [2022-02-10 03:37:05,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20404 to 15645. [2022-02-10 03:37:05,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15645 states, 15644 states have (on average 1.4449629250830989) internal successors, (22605), 15644 states have internal predecessors, (22605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:37:05,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15645 states to 15645 states and 22605 transitions. [2022-02-10 03:37:05,062 INFO L78 Accepts]: Start accepts. Automaton has 15645 states and 22605 transitions. Word has length 43 [2022-02-10 03:37:05,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:37:05,062 INFO L470 AbstractCegarLoop]: Abstraction has 15645 states and 22605 transitions. [2022-02-10 03:37:05,062 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) [2022-02-10 03:37:05,062 INFO L276 IsEmpty]: Start isEmpty. Operand 15645 states and 22605 transitions. [2022-02-10 03:37:05,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-02-10 03:37:05,071 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:37:05,071 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:37:05,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Forceful destruction successful, exit code 0 [2022-02-10 03:37:05,271 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 [2022-02-10 03:37:05,272 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:37:05,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:37:05,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1165514944, now seen corresponding path program 117 times [2022-02-10 03:37:05,272 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:37:05,272 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8825499] [2022-02-10 03:37:05,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:37:05,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:37:05,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:37:05,656 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:37:05,656 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:37:05,656 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8825499] [2022-02-10 03:37:05,656 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8825499] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:37:05,657 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303777479] [2022-02-10 03:37:05,657 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:37:05,657 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:37:05,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:37:05,658 INFO L229 MonitoredProcess]: Starting monitored process 120 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:37:05,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process [2022-02-10 03:37:05,683 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-02-10 03:37:05,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:37:05,684 WARN L261 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 65 conjunts are in the unsatisfiable core [2022-02-10 03:37:05,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:37:06,745 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:06,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:06,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:06,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:06,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:06,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:06,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:06,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:06,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:06,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:06,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:06,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:06,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:06,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:06,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:06,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:06,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:06,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:06,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:06,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:06,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:06,756 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:06,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:06,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:06,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:06,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:06,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:06,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:06,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:06,760 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:06,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:06,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:06,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:06,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:06,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:06,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:06,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:06,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:06,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:06,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:06,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:06,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:06,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:06,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:06,768 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:06,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:06,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:06,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:06,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:06,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:06,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:06,771 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:06,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:06,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:06,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:06,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:06,774 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:06,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:06,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:06,775 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:06,776 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 [2022-02-10 03:37:06,794 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:37:06,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:37:08,655 INFO L353 Elim1Store]: treesize reduction 756, result has 45.3 percent of original size [2022-02-10 03:37:08,655 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 [2022-02-10 03:37:11,183 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 27 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:37:11,183 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303777479] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:37:11,183 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:37:11,183 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 50 [2022-02-10 03:37:11,183 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859740072] [2022-02-10 03:37:11,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:37:11,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-02-10 03:37:11,184 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:37:11,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-02-10 03:37:11,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=2168, Unknown=0, NotChecked=0, Total=2550 [2022-02-10 03:37:11,184 INFO L87 Difference]: Start difference. First operand 15645 states and 22605 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) [2022-02-10 03:37:14,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:37:14,635 INFO L93 Difference]: Finished difference Result 21200 states and 30399 transitions. [2022-02-10 03:37:14,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-02-10 03:37:14,635 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 [2022-02-10 03:37:14,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:37:14,666 INFO L225 Difference]: With dead ends: 21200 [2022-02-10 03:37:14,666 INFO L226 Difference]: Without dead ends: 21172 [2022-02-10 03:37:14,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3890 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1759, Invalid=11351, Unknown=0, NotChecked=0, Total=13110 [2022-02-10 03:37:14,667 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 293 mSDsluCounter, 1979 mSDsCounter, 0 mSdLazyCounter, 1512 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 1978 SdHoareTripleChecker+Invalid, 2221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 604 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-10 03:37:14,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [293 Valid, 1978 Invalid, 2221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1512 Invalid, 0 Unknown, 604 Unchecked, 0.9s Time] [2022-02-10 03:37:14,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21172 states. [2022-02-10 03:37:14,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21172 to 15474. [2022-02-10 03:37:14,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15474 states, 15473 states have (on average 1.4458088282815227) internal successors, (22371), 15473 states have internal predecessors, (22371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:37:14,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15474 states to 15474 states and 22371 transitions. [2022-02-10 03:37:14,920 INFO L78 Accepts]: Start accepts. Automaton has 15474 states and 22371 transitions. Word has length 43 [2022-02-10 03:37:14,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:37:14,920 INFO L470 AbstractCegarLoop]: Abstraction has 15474 states and 22371 transitions. [2022-02-10 03:37:14,920 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) [2022-02-10 03:37:14,920 INFO L276 IsEmpty]: Start isEmpty. Operand 15474 states and 22371 transitions. [2022-02-10 03:37:14,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-02-10 03:37:14,929 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:37:14,930 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:37:14,946 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Ended with exit code 0 [2022-02-10 03:37:15,130 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 [2022-02-10 03:37:15,130 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:37:15,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:37:15,130 INFO L85 PathProgramCache]: Analyzing trace with hash -353174464, now seen corresponding path program 118 times [2022-02-10 03:37:15,131 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:37:15,131 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392491011] [2022-02-10 03:37:15,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:37:15,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:37:15,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:37:15,477 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:37:15,477 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:37:15,477 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392491011] [2022-02-10 03:37:15,477 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392491011] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:37:15,477 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523416098] [2022-02-10 03:37:15,477 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:37:15,477 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:37:15,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:37:15,478 INFO L229 MonitoredProcess]: Starting monitored process 121 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:37:15,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Waiting until timeout for monitored process [2022-02-10 03:37:15,501 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:37:15,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:37:15,502 WARN L261 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 65 conjunts are in the unsatisfiable core [2022-02-10 03:37:15,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:37:16,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:16,532 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:16,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:16,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:16,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:16,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:16,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:16,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:16,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:16,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:16,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:16,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:16,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:16,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:16,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:16,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:16,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:16,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:16,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:16,542 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:16,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:16,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:16,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:16,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:16,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:16,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:16,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:16,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:16,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:16,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:16,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:16,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:16,549 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:16,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:16,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:16,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:16,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:16,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:16,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:16,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:16,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:16,554 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:16,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:16,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:16,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:16,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:16,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:16,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:16,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:16,558 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:16,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:16,559 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:16,560 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 28 disjoint index pairs (out of 91 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 49 [2022-02-10 03:37:16,579 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:37:16,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:37:18,423 INFO L353 Elim1Store]: treesize reduction 756, result has 45.3 percent of original size [2022-02-10 03:37:18,424 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 [2022-02-10 03:37:22,404 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 3 proven. 109 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:37:22,404 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523416098] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:37:22,404 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:37:22,405 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 19] total 48 [2022-02-10 03:37:22,405 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829515004] [2022-02-10 03:37:22,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:37:22,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-02-10 03:37:22,405 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:37:22,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-02-10 03:37:22,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=354, Invalid=1998, Unknown=0, NotChecked=0, Total=2352 [2022-02-10 03:37:22,405 INFO L87 Difference]: Start difference. First operand 15474 states and 22371 transitions. Second operand has 49 states, 49 states have (on average 2.2448979591836733) internal successors, (110), 48 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) [2022-02-10 03:37:27,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:37:27,444 INFO L93 Difference]: Finished difference Result 31161 states and 44834 transitions. [2022-02-10 03:37:27,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2022-02-10 03:37:27,444 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.2448979591836733) internal successors, (110), 48 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 [2022-02-10 03:37:27,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:37:27,495 INFO L225 Difference]: With dead ends: 31161 [2022-02-10 03:37:27,495 INFO L226 Difference]: Without dead ends: 30666 [2022-02-10 03:37:27,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 53 SyntacticMatches, 3 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6058 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=2782, Invalid=15308, Unknown=0, NotChecked=0, Total=18090 [2022-02-10 03:37:27,497 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 675 mSDsluCounter, 2947 mSDsCounter, 0 mSdLazyCounter, 1644 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 675 SdHoareTripleChecker+Valid, 1995 SdHoareTripleChecker+Invalid, 2656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 1644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 829 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-10 03:37:27,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [675 Valid, 1995 Invalid, 2656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 1644 Invalid, 0 Unknown, 829 Unchecked, 1.0s Time] [2022-02-10 03:37:27,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30666 states. [2022-02-10 03:37:27,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30666 to 16368. [2022-02-10 03:37:27,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16368 states, 16367 states have (on average 1.4405816582147004) internal successors, (23578), 16367 states have internal predecessors, (23578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:37:27,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16368 states to 16368 states and 23578 transitions. [2022-02-10 03:37:27,824 INFO L78 Accepts]: Start accepts. Automaton has 16368 states and 23578 transitions. Word has length 43 [2022-02-10 03:37:27,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:37:27,824 INFO L470 AbstractCegarLoop]: Abstraction has 16368 states and 23578 transitions. [2022-02-10 03:37:27,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.2448979591836733) internal successors, (110), 48 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) [2022-02-10 03:37:27,824 INFO L276 IsEmpty]: Start isEmpty. Operand 16368 states and 23578 transitions. [2022-02-10 03:37:27,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-02-10 03:37:27,834 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:37:27,834 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:37:27,850 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Ended with exit code 0 [2022-02-10 03:37:28,034 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 [2022-02-10 03:37:28,035 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:37:28,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:37:28,035 INFO L85 PathProgramCache]: Analyzing trace with hash 193714912, now seen corresponding path program 119 times [2022-02-10 03:37:28,035 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:37:28,035 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158167961] [2022-02-10 03:37:28,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:37:28,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:37:28,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:37:28,420 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:37:28,420 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:37:28,420 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158167961] [2022-02-10 03:37:28,420 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158167961] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:37:28,420 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686233775] [2022-02-10 03:37:28,420 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 03:37:28,420 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:37:28,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:37:28,421 INFO L229 MonitoredProcess]: Starting monitored process 122 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:37:28,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Waiting until timeout for monitored process [2022-02-10 03:37:28,451 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-02-10 03:37:28,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:37:28,452 WARN L261 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 66 conjunts are in the unsatisfiable core [2022-02-10 03:37:28,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:37:29,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:29,516 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:29,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:29,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:29,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:29,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:29,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:29,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:29,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:29,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:29,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:29,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:29,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:29,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:29,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:29,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:29,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:29,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:29,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:29,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:29,526 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:29,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:29,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:29,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:29,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:29,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:29,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:29,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:29,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:29,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:29,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:29,532 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:29,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:29,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:29,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:29,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:29,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:29,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:29,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:29,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:29,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:29,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:29,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:29,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:29,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:29,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:29,540 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:29,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:29,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:29,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:29,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:29,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:29,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:29,543 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:29,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:29,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:29,544 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:29,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:29,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:29,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:29,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:29,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:29,547 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:29,548 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:29,548 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 [2022-02-10 03:37:29,578 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:37:29,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:37:31,119 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,120 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,120 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,120 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,121 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,121 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,121 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,122 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,122 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,122 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,123 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,124 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,124 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,126 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,126 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,126 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,127 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,127 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,127 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,127 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,129 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,129 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,129 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,130 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,130 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,130 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,133 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,133 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,134 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,134 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,135 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,135 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,137 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,138 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,138 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,138 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,138 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,139 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,139 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,141 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,142 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,142 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,142 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,143 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,144 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,145 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,145 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,145 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,146 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,146 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,146 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,147 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,147 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,148 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,148 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,148 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,149 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,149 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,149 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,149 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,150 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,150 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,150 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,152 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,152 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,153 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,153 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,155 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,155 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,155 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,156 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,157 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,157 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,157 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,157 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,158 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,158 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,158 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,160 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,160 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,161 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,162 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,162 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,162 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:31,299 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:37:31,300 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 [2022-02-10 03:37:32,324 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:37:32,324 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686233775] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:37:32,324 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:37:32,324 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 53 [2022-02-10 03:37:32,324 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78547513] [2022-02-10 03:37:32,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:37:32,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-10 03:37:32,324 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:37:32,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-10 03:37:32,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=541, Invalid=2321, Unknown=0, NotChecked=0, Total=2862 [2022-02-10 03:37:32,325 INFO L87 Difference]: Start difference. First operand 16368 states and 23578 transitions. Second operand has 54 states, 54 states have (on average 2.2222222222222223) internal successors, (120), 53 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) [2022-02-10 03:37:43,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:37:43,490 INFO L93 Difference]: Finished difference Result 26722 states and 38206 transitions. [2022-02-10 03:37:43,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2022-02-10 03:37:43,490 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.2222222222222223) internal successors, (120), 53 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 [2022-02-10 03:37:43,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:37:43,526 INFO L225 Difference]: With dead ends: 26722 [2022-02-10 03:37:43,527 INFO L226 Difference]: Without dead ends: 26329 [2022-02-10 03:37:43,528 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 50 SyntacticMatches, 12 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8551 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=3610, Invalid=24446, Unknown=0, NotChecked=0, Total=28056 [2022-02-10 03:37:43,528 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 673 mSDsluCounter, 3781 mSDsCounter, 0 mSdLazyCounter, 2090 mSolverCounterSat, 286 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 673 SdHoareTripleChecker+Valid, 2739 SdHoareTripleChecker+Invalid, 3427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 286 IncrementalHoareTripleChecker+Valid, 2090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1051 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-10 03:37:43,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [673 Valid, 2739 Invalid, 3427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [286 Valid, 2090 Invalid, 0 Unknown, 1051 Unchecked, 1.5s Time] [2022-02-10 03:37:43,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26329 states. [2022-02-10 03:37:43,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26329 to 16911. [2022-02-10 03:37:43,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16911 states, 16910 states have (on average 1.4422826729745712) internal successors, (24389), 16910 states have internal predecessors, (24389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:37:43,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16911 states to 16911 states and 24389 transitions. [2022-02-10 03:37:43,780 INFO L78 Accepts]: Start accepts. Automaton has 16911 states and 24389 transitions. Word has length 43 [2022-02-10 03:37:43,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:37:43,780 INFO L470 AbstractCegarLoop]: Abstraction has 16911 states and 24389 transitions. [2022-02-10 03:37:43,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.2222222222222223) internal successors, (120), 53 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) [2022-02-10 03:37:43,780 INFO L276 IsEmpty]: Start isEmpty. Operand 16911 states and 24389 transitions. [2022-02-10 03:37:43,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-02-10 03:37:43,789 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:37:43,789 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:37:43,805 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Ended with exit code 0 [2022-02-10 03:37:43,990 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 [2022-02-10 03:37:43,990 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:37:43,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:37:43,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1198082688, now seen corresponding path program 120 times [2022-02-10 03:37:43,990 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:37:43,990 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180652987] [2022-02-10 03:37:43,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:37:43,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:37:43,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:37:44,322 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:37:44,322 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:37:44,322 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180652987] [2022-02-10 03:37:44,322 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180652987] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:37:44,323 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122829353] [2022-02-10 03:37:44,323 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 03:37:44,323 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:37:44,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:37:44,324 INFO L229 MonitoredProcess]: Starting monitored process 123 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:37:44,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Waiting until timeout for monitored process [2022-02-10 03:37:44,350 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-02-10 03:37:44,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:37:44,351 WARN L261 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 66 conjunts are in the unsatisfiable core [2022-02-10 03:37:44,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:37:45,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:45,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:45,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:45,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:45,423 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:45,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:45,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:45,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:45,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:45,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:45,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:45,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:45,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:45,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:45,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:45,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:45,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:45,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:45,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:45,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:45,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:45,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:45,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:45,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:45,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:45,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:45,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:45,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:45,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:45,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:45,436 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:45,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:45,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:45,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:45,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:45,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:45,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:45,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:45,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:45,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:45,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:45,442 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:45,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:45,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:45,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:45,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:45,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:45,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:45,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:45,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:45,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:45,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:45,448 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:45,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:45,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:45,449 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:45,449 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:45,450 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 28 disjoint index pairs (out of 91 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 135 treesize of output 49 [2022-02-10 03:37:45,468 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:37:45,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:37:46,897 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,898 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,899 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,899 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,899 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,900 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,900 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,900 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,901 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,901 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,902 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,902 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,903 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,905 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,905 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,905 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,905 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,906 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,906 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,906 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,908 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,908 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,908 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,908 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,909 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,910 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,912 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,912 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,912 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,913 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,913 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,914 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,916 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,916 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,917 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,917 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,917 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,917 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,918 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,920 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,920 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,921 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,921 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,922 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,923 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,924 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,924 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,924 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,924 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,925 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,925 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,925 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,926 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,926 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,926 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,926 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,928 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,929 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,929 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,930 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,930 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,930 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,931 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,931 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,931 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,932 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,932 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,934 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,934 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,934 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,935 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,936 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,936 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,936 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,936 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,937 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,937 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,937 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,939 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,939 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,940 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,941 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,941 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:46,941 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:47,085 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:37:47,085 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 144 treesize of output 456 [2022-02-10 03:37:49,118 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:37:49,119 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122829353] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:37:49,119 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:37:49,119 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 19, 19] total 47 [2022-02-10 03:37:49,119 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58136357] [2022-02-10 03:37:49,119 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:37:49,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-10 03:37:49,119 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:37:49,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-10 03:37:49,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=454, Invalid=1802, Unknown=0, NotChecked=0, Total=2256 [2022-02-10 03:37:49,120 INFO L87 Difference]: Start difference. First operand 16911 states and 24389 transitions. Second operand has 48 states, 48 states have (on average 2.3125) internal successors, (111), 47 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) [2022-02-10 03:37:50,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:37:50,661 INFO L93 Difference]: Finished difference Result 22518 states and 31944 transitions. [2022-02-10 03:37:50,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-02-10 03:37:50,661 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.3125) internal successors, (111), 47 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 [2022-02-10 03:37:50,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:37:50,693 INFO L225 Difference]: With dead ends: 22518 [2022-02-10 03:37:50,693 INFO L226 Difference]: Without dead ends: 22364 [2022-02-10 03:37:50,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 61 SyntacticMatches, 5 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1217 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=797, Invalid=3625, Unknown=0, NotChecked=0, Total=4422 [2022-02-10 03:37:50,694 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 468 mSDsluCounter, 1510 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 1548 SdHoareTripleChecker+Invalid, 971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 624 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:37:50,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [468 Valid, 1548 Invalid, 971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 285 Invalid, 0 Unknown, 624 Unchecked, 0.2s Time] [2022-02-10 03:37:50,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22364 states. [2022-02-10 03:37:50,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22364 to 17941. [2022-02-10 03:37:50,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17941 states, 17940 states have (on average 1.442251950947603) internal successors, (25874), 17940 states have internal predecessors, (25874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:37:50,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17941 states to 17941 states and 25874 transitions. [2022-02-10 03:37:50,973 INFO L78 Accepts]: Start accepts. Automaton has 17941 states and 25874 transitions. Word has length 43 [2022-02-10 03:37:50,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:37:50,973 INFO L470 AbstractCegarLoop]: Abstraction has 17941 states and 25874 transitions. [2022-02-10 03:37:50,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.3125) internal successors, (111), 47 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) [2022-02-10 03:37:50,973 INFO L276 IsEmpty]: Start isEmpty. Operand 17941 states and 25874 transitions. [2022-02-10 03:37:50,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-02-10 03:37:50,986 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:37:50,986 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:37:51,001 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Ended with exit code 0 [2022-02-10 03:37:51,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125,123 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:37:51,186 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:37:51,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:37:51,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1636224896, now seen corresponding path program 121 times [2022-02-10 03:37:51,187 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:37:51,187 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295112585] [2022-02-10 03:37:51,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:37:51,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:37:51,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:37:51,571 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 109 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 03:37:51,571 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:37:51,571 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295112585] [2022-02-10 03:37:51,571 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295112585] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:37:51,571 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181814311] [2022-02-10 03:37:51,571 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 03:37:51,571 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:37:51,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:37:51,572 INFO L229 MonitoredProcess]: Starting monitored process 124 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:37:51,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Waiting until timeout for monitored process [2022-02-10 03:37:51,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:37:51,598 WARN L261 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 65 conjunts are in the unsatisfiable core [2022-02-10 03:37:51,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:37:52,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:52,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:52,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:52,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:52,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:52,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:52,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:52,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:52,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:52,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:52,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:52,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:52,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:52,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:52,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:52,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:52,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:52,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:52,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:52,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:52,609 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:52,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:52,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:52,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:52,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:52,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:52,612 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:52,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:52,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:52,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:52,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:52,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:52,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:52,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:52,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:52,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:52,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:52,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:52,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:52,619 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:52,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:52,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:52,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:52,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:52,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:52,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:52,622 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:52,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:52,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:52,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:52,624 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:52,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:52,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:52,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:52,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:37:52,627 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:37:52,627 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 28 disjoint index pairs (out of 91 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 49 [2022-02-10 03:37:52,646 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 3 proven. 109 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:37:52,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:37:54,480 INFO L353 Elim1Store]: treesize reduction 756, result has 45.3 percent of original size [2022-02-10 03:37:54,481 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 [2022-02-10 03:37:57,142 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 6 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:37:57,142 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181814311] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:37:57,142 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:37:57,142 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19, 19] total 47 [2022-02-10 03:37:57,142 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26411730] [2022-02-10 03:37:57,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:37:57,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-10 03:37:57,142 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:37:57,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-10 03:37:57,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=1889, Unknown=0, NotChecked=0, Total=2256 [2022-02-10 03:37:57,143 INFO L87 Difference]: Start difference. First operand 17941 states and 25874 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) [2022-02-10 03:38:00,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:38:00,817 INFO L93 Difference]: Finished difference Result 25403 states and 36303 transitions. [2022-02-10 03:38:00,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-02-10 03:38:00,817 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 43 [2022-02-10 03:38:00,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:38:00,855 INFO L225 Difference]: With dead ends: 25403 [2022-02-10 03:38:00,856 INFO L226 Difference]: Without dead ends: 24864 [2022-02-10 03:38:00,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 53 SyntacticMatches, 4 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3061 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1323, Invalid=9183, Unknown=0, NotChecked=0, Total=10506 [2022-02-10 03:38:00,857 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 767 mSDsluCounter, 3456 mSDsCounter, 0 mSdLazyCounter, 2028 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 767 SdHoareTripleChecker+Valid, 2230 SdHoareTripleChecker+Invalid, 2758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 2028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 536 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:38:00,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [767 Valid, 2230 Invalid, 2758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 2028 Invalid, 0 Unknown, 536 Unchecked, 1.1s Time] [2022-02-10 03:38:00,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24864 states. [2022-02-10 03:38:01,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24864 to 18551. [2022-02-10 03:38:01,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18551 states, 18550 states have (on average 1.4444743935309974) internal successors, (26795), 18550 states have internal predecessors, (26795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:38:01,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18551 states to 18551 states and 26795 transitions. [2022-02-10 03:38:01,165 INFO L78 Accepts]: Start accepts. Automaton has 18551 states and 26795 transitions. Word has length 43 [2022-02-10 03:38:01,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:38:01,165 INFO L470 AbstractCegarLoop]: Abstraction has 18551 states and 26795 transitions. [2022-02-10 03:38:01,165 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) [2022-02-10 03:38:01,165 INFO L276 IsEmpty]: Start isEmpty. Operand 18551 states and 26795 transitions. [2022-02-10 03:38:01,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-02-10 03:38:01,176 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:38:01,176 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:38:01,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Forceful destruction successful, exit code 0 [2022-02-10 03:38:01,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126,124 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:38:01,380 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:38:01,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:38:01,380 INFO L85 PathProgramCache]: Analyzing trace with hash -936575568, now seen corresponding path program 122 times [2022-02-10 03:38:01,380 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:38:01,380 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225062333] [2022-02-10 03:38:01,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:38:01,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:38:01,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:38:01,791 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:38:01,792 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:38:01,792 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225062333] [2022-02-10 03:38:01,792 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225062333] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:38:01,792 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71501268] [2022-02-10 03:38:01,792 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:38:01,792 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:38:01,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:38:01,793 INFO L229 MonitoredProcess]: Starting monitored process 125 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:38:01,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Waiting until timeout for monitored process [2022-02-10 03:38:01,817 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:38:01,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:38:01,818 WARN L261 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 65 conjunts are in the unsatisfiable core [2022-02-10 03:38:01,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:38:02,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:02,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:02,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:02,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:02,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:02,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:02,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:02,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:02,863 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:02,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:02,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:02,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:02,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:02,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:02,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:02,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:02,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:02,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:02,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:02,868 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:02,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:02,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:02,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:02,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:02,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:02,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:02,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:02,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:02,873 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:02,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:02,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:02,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:02,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:02,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:02,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:02,876 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:02,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:02,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:02,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:02,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:02,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:02,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:02,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:02,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:02,881 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:02,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:02,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:02,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:02,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:02,883 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:02,884 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 28 disjoint index pairs (out of 91 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 49 [2022-02-10 03:38:02,902 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:38:02,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:38:04,672 INFO L353 Elim1Store]: treesize reduction 756, result has 45.3 percent of original size [2022-02-10 03:38:04,673 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 [2022-02-10 03:38:07,199 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 6 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:38:07,200 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71501268] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:38:07,200 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:38:07,200 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 49 [2022-02-10 03:38:07,200 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682416712] [2022-02-10 03:38:07,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:38:07,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-02-10 03:38:07,200 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:38:07,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-02-10 03:38:07,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=368, Invalid=2082, Unknown=0, NotChecked=0, Total=2450 [2022-02-10 03:38:07,201 INFO L87 Difference]: Start difference. First operand 18551 states and 26795 transitions. Second operand has 50 states, 50 states have (on average 2.2) internal successors, (110), 49 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) [2022-02-10 03:38:12,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:38:12,289 INFO L93 Difference]: Finished difference Result 25203 states and 36346 transitions. [2022-02-10 03:38:12,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2022-02-10 03:38:12,289 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.2) internal successors, (110), 49 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 [2022-02-10 03:38:12,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:38:12,336 INFO L225 Difference]: With dead ends: 25203 [2022-02-10 03:38:12,336 INFO L226 Difference]: Without dead ends: 25107 [2022-02-10 03:38:12,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 53 SyntacticMatches, 3 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5808 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=2471, Invalid=16435, Unknown=0, NotChecked=0, Total=18906 [2022-02-10 03:38:12,339 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 348 mSDsluCounter, 2461 mSDsCounter, 0 mSdLazyCounter, 1677 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 2318 SdHoareTripleChecker+Invalid, 2310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 527 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:38:12,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [348 Valid, 2318 Invalid, 2310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1677 Invalid, 0 Unknown, 527 Unchecked, 1.1s Time] [2022-02-10 03:38:12,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25107 states. [2022-02-10 03:38:12,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25107 to 19266. [2022-02-10 03:38:12,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19266 states, 19265 states have (on average 1.4435504801453414) internal successors, (27810), 19265 states have internal predecessors, (27810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:38:12,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19266 states to 19266 states and 27810 transitions. [2022-02-10 03:38:12,709 INFO L78 Accepts]: Start accepts. Automaton has 19266 states and 27810 transitions. Word has length 43 [2022-02-10 03:38:12,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:38:12,710 INFO L470 AbstractCegarLoop]: Abstraction has 19266 states and 27810 transitions. [2022-02-10 03:38:12,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.2) internal successors, (110), 49 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) [2022-02-10 03:38:12,710 INFO L276 IsEmpty]: Start isEmpty. Operand 19266 states and 27810 transitions. [2022-02-10 03:38:12,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-02-10 03:38:12,722 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:38:12,723 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:38:12,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Forceful destruction successful, exit code 0 [2022-02-10 03:38:12,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 125 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable127 [2022-02-10 03:38:12,935 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:38:12,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:38:12,936 INFO L85 PathProgramCache]: Analyzing trace with hash -989391376, now seen corresponding path program 123 times [2022-02-10 03:38:12,936 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:38:12,936 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454989923] [2022-02-10 03:38:12,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:38:12,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:38:12,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:38:13,297 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:38:13,298 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:38:13,298 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454989923] [2022-02-10 03:38:13,298 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454989923] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:38:13,298 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410864736] [2022-02-10 03:38:13,298 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:38:13,298 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:38:13,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:38:13,299 INFO L229 MonitoredProcess]: Starting monitored process 126 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:38:13,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Waiting until timeout for monitored process [2022-02-10 03:38:13,323 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-02-10 03:38:13,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:38:13,324 WARN L261 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 65 conjunts are in the unsatisfiable core [2022-02-10 03:38:13,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:38:14,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:14,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:14,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:14,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:14,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:14,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:14,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:14,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:14,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:14,403 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:14,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:14,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:14,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:14,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:14,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:14,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:14,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:14,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:14,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:14,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:14,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:14,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:14,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:14,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:14,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:14,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:14,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:14,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:14,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:14,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:14,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:14,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:14,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:14,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:14,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:14,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:14,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:14,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:14,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:14,418 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:14,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:14,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:14,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:14,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:14,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:14,421 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:14,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:14,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:14,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:14,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:14,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:14,424 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:14,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:14,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:14,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:14,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:14,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:14,427 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:14,427 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:14,428 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 28 disjoint index pairs (out of 91 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 49 [2022-02-10 03:38:14,446 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:38:14,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:38:16,305 INFO L353 Elim1Store]: treesize reduction 756, result has 45.3 percent of original size [2022-02-10 03:38:16,305 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 [2022-02-10 03:38:18,391 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 12 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:38:18,392 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410864736] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:38:18,392 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:38:18,392 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 19, 19] total 46 [2022-02-10 03:38:18,392 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72715763] [2022-02-10 03:38:18,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:38:18,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-10 03:38:18,392 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:38:18,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-10 03:38:18,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=355, Invalid=1807, Unknown=0, NotChecked=0, Total=2162 [2022-02-10 03:38:18,393 INFO L87 Difference]: Start difference. First operand 19266 states and 27810 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) [2022-02-10 03:38:21,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:38:21,665 INFO L93 Difference]: Finished difference Result 24881 states and 35492 transitions. [2022-02-10 03:38:21,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-02-10 03:38:21,665 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 [2022-02-10 03:38:21,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:38:21,707 INFO L225 Difference]: With dead ends: 24881 [2022-02-10 03:38:21,707 INFO L226 Difference]: Without dead ends: 24528 [2022-02-10 03:38:21,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 54 SyntacticMatches, 4 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1842 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=935, Invalid=5707, Unknown=0, NotChecked=0, Total=6642 [2022-02-10 03:38:21,708 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 583 mSDsluCounter, 3374 mSDsCounter, 0 mSdLazyCounter, 2454 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 2423 SdHoareTripleChecker+Invalid, 2731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 2454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 139 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-10 03:38:21,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [583 Valid, 2423 Invalid, 2731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 2454 Invalid, 0 Unknown, 139 Unchecked, 1.4s Time] [2022-02-10 03:38:21,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24528 states. [2022-02-10 03:38:22,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24528 to 20476. [2022-02-10 03:38:22,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20476 states, 20475 states have (on average 1.4453724053724053) internal successors, (29594), 20475 states have internal predecessors, (29594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:38:22,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20476 states to 20476 states and 29594 transitions. [2022-02-10 03:38:22,152 INFO L78 Accepts]: Start accepts. Automaton has 20476 states and 29594 transitions. Word has length 43 [2022-02-10 03:38:22,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:38:22,152 INFO L470 AbstractCegarLoop]: Abstraction has 20476 states and 29594 transitions. [2022-02-10 03:38:22,152 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) [2022-02-10 03:38:22,152 INFO L276 IsEmpty]: Start isEmpty. Operand 20476 states and 29594 transitions. [2022-02-10 03:38:22,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-02-10 03:38:22,166 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:38:22,166 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:38:22,189 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Ended with exit code 0 [2022-02-10 03:38:22,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2022-02-10 03:38:22,367 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:38:22,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:38:22,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1028886752, now seen corresponding path program 124 times [2022-02-10 03:38:22,367 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:38:22,367 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430798635] [2022-02-10 03:38:22,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:38:22,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:38:22,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:38:22,775 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:38:22,775 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:38:22,775 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430798635] [2022-02-10 03:38:22,775 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430798635] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:38:22,775 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080822786] [2022-02-10 03:38:22,775 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:38:22,776 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:38:22,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:38:22,777 INFO L229 MonitoredProcess]: Starting monitored process 127 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:38:22,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Waiting until timeout for monitored process [2022-02-10 03:38:22,808 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:38:22,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:38:22,809 WARN L261 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 65 conjunts are in the unsatisfiable core [2022-02-10 03:38:22,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:38:23,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:23,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:23,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:23,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:23,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:23,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:23,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:23,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:23,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:23,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:23,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:23,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:23,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:23,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:23,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:23,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:23,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:23,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:23,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:23,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:23,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:23,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:23,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:23,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:23,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:23,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:23,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:23,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:23,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:23,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:23,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:23,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:23,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:23,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:23,877 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:23,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:23,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:23,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:23,879 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:23,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:23,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:23,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:23,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:23,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:23,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:23,883 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:23,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:23,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:23,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:23,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:23,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:23,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:23,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:23,887 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:23,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:23,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:23,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:23,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:23,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:23,890 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:23,890 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:23,891 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 28 disjoint index pairs (out of 91 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 49 [2022-02-10 03:38:23,910 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:38:23,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:38:25,885 INFO L353 Elim1Store]: treesize reduction 756, result has 45.3 percent of original size [2022-02-10 03:38:25,886 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 [2022-02-10 03:38:27,702 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 12 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:38:27,702 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080822786] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:38:27,702 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:38:27,702 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 19] total 48 [2022-02-10 03:38:27,702 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098554956] [2022-02-10 03:38:27,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:38:27,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-02-10 03:38:27,703 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:38:27,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-02-10 03:38:27,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=371, Invalid=1981, Unknown=0, NotChecked=0, Total=2352 [2022-02-10 03:38:27,703 INFO L87 Difference]: Start difference. First operand 20476 states and 29594 transitions. Second operand has 49 states, 49 states have (on average 2.2448979591836733) internal successors, (110), 48 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) [2022-02-10 03:38:32,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:38:32,017 INFO L93 Difference]: Finished difference Result 32019 states and 45891 transitions. [2022-02-10 03:38:32,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-02-10 03:38:32,017 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.2448979591836733) internal successors, (110), 48 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 [2022-02-10 03:38:32,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:38:32,076 INFO L225 Difference]: With dead ends: 32019 [2022-02-10 03:38:32,076 INFO L226 Difference]: Without dead ends: 31728 [2022-02-10 03:38:32,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 53 SyntacticMatches, 4 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4241 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1891, Invalid=11915, Unknown=0, NotChecked=0, Total=13806 [2022-02-10 03:38:32,077 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 419 mSDsluCounter, 2712 mSDsCounter, 0 mSdLazyCounter, 1788 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 2090 SdHoareTripleChecker+Invalid, 2448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 1788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 512 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:38:32,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [419 Valid, 2090 Invalid, 2448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 1788 Invalid, 0 Unknown, 512 Unchecked, 1.1s Time] [2022-02-10 03:38:32,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31728 states. [2022-02-10 03:38:32,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31728 to 20560. [2022-02-10 03:38:32,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20560 states, 20559 states have (on average 1.4451578384162653) internal successors, (29711), 20559 states have internal predecessors, (29711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:38:32,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20560 states to 20560 states and 29711 transitions. [2022-02-10 03:38:32,482 INFO L78 Accepts]: Start accepts. Automaton has 20560 states and 29711 transitions. Word has length 43 [2022-02-10 03:38:32,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:38:32,482 INFO L470 AbstractCegarLoop]: Abstraction has 20560 states and 29711 transitions. [2022-02-10 03:38:32,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.2448979591836733) internal successors, (110), 48 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) [2022-02-10 03:38:32,482 INFO L276 IsEmpty]: Start isEmpty. Operand 20560 states and 29711 transitions. [2022-02-10 03:38:32,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-02-10 03:38:32,495 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:38:32,495 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:38:32,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Forceful destruction successful, exit code 0 [2022-02-10 03:38:32,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 127 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2022-02-10 03:38:32,696 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:38:32,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:38:32,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1170917664, now seen corresponding path program 125 times [2022-02-10 03:38:32,697 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:38:32,697 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990465067] [2022-02-10 03:38:32,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:38:32,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:38:32,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:38:33,107 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:38:33,107 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:38:33,107 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990465067] [2022-02-10 03:38:33,107 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990465067] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:38:33,107 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831346824] [2022-02-10 03:38:33,107 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 03:38:33,107 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:38:33,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:38:33,108 INFO L229 MonitoredProcess]: Starting monitored process 128 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:38:33,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Waiting until timeout for monitored process [2022-02-10 03:38:33,136 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-02-10 03:38:33,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:38:33,137 WARN L261 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 66 conjunts are in the unsatisfiable core [2022-02-10 03:38:33,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:38:34,211 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:34,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:34,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:34,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:34,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:34,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:34,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:34,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:34,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:34,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:34,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:34,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:34,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:34,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:34,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:34,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:34,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:34,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:34,223 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:34,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:34,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:34,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:34,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:34,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:34,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:34,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:34,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:34,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:34,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:34,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:34,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:34,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:34,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:34,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:34,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:34,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:34,233 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:34,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:34,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:34,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:34,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:34,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:34,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:34,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:34,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:34,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:34,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:34,240 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:34,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:34,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:34,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:34,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:34,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:34,243 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:34,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:34,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:34,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:34,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:34,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:34,247 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:34,247 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:34,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:34,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:34,249 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:34,249 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 [2022-02-10 03:38:34,285 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:38:34,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:38:35,993 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:35,994 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:35,995 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:35,995 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:35,996 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:35,996 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:35,996 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:35,996 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:35,997 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:35,997 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:35,998 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:35,998 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:35,999 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,001 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,001 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,002 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,002 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,002 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,003 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,003 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,005 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,005 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,005 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,006 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,006 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,006 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,009 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,010 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,010 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,011 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,011 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,012 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,014 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,015 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,015 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,015 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,016 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,016 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,016 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,018 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,019 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,019 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,020 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,021 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,022 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,023 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,023 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,023 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,023 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,024 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,024 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,025 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,025 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,026 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,026 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,027 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,027 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,027 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,028 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,028 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,028 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,028 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,029 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,031 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,031 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,031 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,032 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,034 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,034 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,034 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,035 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,035 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,036 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,036 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,037 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,037 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,037 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,038 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,040 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,040 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,040 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,041 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,041 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,042 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:36,192 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:38:36,193 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 [2022-02-10 03:38:37,787 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:38:37,788 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831346824] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:38:37,788 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:38:37,788 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 53 [2022-02-10 03:38:37,788 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494546471] [2022-02-10 03:38:37,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:38:37,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-10 03:38:37,789 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:38:37,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-10 03:38:37,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=543, Invalid=2319, Unknown=0, NotChecked=0, Total=2862 [2022-02-10 03:38:37,789 INFO L87 Difference]: Start difference. First operand 20560 states and 29711 transitions. Second operand has 54 states, 54 states have (on average 2.2222222222222223) internal successors, (120), 53 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) [2022-02-10 03:38:54,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:38:54,263 INFO L93 Difference]: Finished difference Result 27266 states and 38991 transitions. [2022-02-10 03:38:54,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2022-02-10 03:38:54,263 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.2222222222222223) internal successors, (120), 53 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 [2022-02-10 03:38:54,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:38:54,311 INFO L225 Difference]: With dead ends: 27266 [2022-02-10 03:38:54,311 INFO L226 Difference]: Without dead ends: 27068 [2022-02-10 03:38:54,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 50 SyntacticMatches, 12 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11733 ImplicationChecksByTransitivity, 16.5s TimeCoverageRelationStatistics Valid=4892, Invalid=31398, Unknown=0, NotChecked=0, Total=36290 [2022-02-10 03:38:54,313 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 646 mSDsluCounter, 3069 mSDsCounter, 0 mSdLazyCounter, 2018 mSolverCounterSat, 366 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 646 SdHoareTripleChecker+Valid, 2354 SdHoareTripleChecker+Invalid, 3117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 366 IncrementalHoareTripleChecker+Valid, 2018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 733 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-10 03:38:54,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [646 Valid, 2354 Invalid, 3117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [366 Valid, 2018 Invalid, 0 Unknown, 733 Unchecked, 1.7s Time] [2022-02-10 03:38:54,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27068 states. [2022-02-10 03:38:54,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27068 to 21206. [2022-02-10 03:38:54,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21206 states, 21205 states have (on average 1.4444234850271163) internal successors, (30629), 21205 states have internal predecessors, (30629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:38:54,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21206 states to 21206 states and 30629 transitions. [2022-02-10 03:38:54,717 INFO L78 Accepts]: Start accepts. Automaton has 21206 states and 30629 transitions. Word has length 43 [2022-02-10 03:38:54,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:38:54,718 INFO L470 AbstractCegarLoop]: Abstraction has 21206 states and 30629 transitions. [2022-02-10 03:38:54,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.2222222222222223) internal successors, (120), 53 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) [2022-02-10 03:38:54,718 INFO L276 IsEmpty]: Start isEmpty. Operand 21206 states and 30629 transitions. [2022-02-10 03:38:54,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-02-10 03:38:54,731 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:38:54,731 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:38:54,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Forceful destruction successful, exit code 0 [2022-02-10 03:38:54,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,128 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:38:54,932 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:38:54,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:38:54,932 INFO L85 PathProgramCache]: Analyzing trace with hash -814594064, now seen corresponding path program 126 times [2022-02-10 03:38:54,932 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:38:54,932 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034577884] [2022-02-10 03:38:54,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:38:54,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:38:54,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:38:55,350 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:38:55,351 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:38:55,351 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034577884] [2022-02-10 03:38:55,351 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034577884] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:38:55,351 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304173894] [2022-02-10 03:38:55,351 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 03:38:55,351 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:38:55,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:38:55,352 INFO L229 MonitoredProcess]: Starting monitored process 129 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:38:55,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Waiting until timeout for monitored process [2022-02-10 03:38:55,381 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-02-10 03:38:55,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:38:55,382 WARN L261 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 65 conjunts are in the unsatisfiable core [2022-02-10 03:38:55,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:38:56,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:56,437 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:56,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:56,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:56,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:56,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:56,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:56,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:56,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:56,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:56,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:56,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:56,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:56,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:56,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:56,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:56,445 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:56,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:56,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:56,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:56,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:56,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:56,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:56,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:56,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:56,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:56,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:56,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:56,451 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:56,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:56,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:56,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:56,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:56,454 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:56,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:56,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:56,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:56,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:56,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:56,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:56,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:56,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:56,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:56,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:56,460 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:56,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:56,461 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:56,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:56,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:56,462 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 28 disjoint index pairs (out of 91 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 49 [2022-02-10 03:38:56,481 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:38:56,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:38:58,484 INFO L353 Elim1Store]: treesize reduction 756, result has 45.3 percent of original size [2022-02-10 03:38:58,484 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 [2022-02-10 03:39:00,818 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 18 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:39:00,818 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304173894] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:39:00,818 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:39:00,818 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 49 [2022-02-10 03:39:00,818 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652365334] [2022-02-10 03:39:00,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:39:00,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-02-10 03:39:00,818 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:39:00,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-02-10 03:39:00,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=372, Invalid=2078, Unknown=0, NotChecked=0, Total=2450 [2022-02-10 03:39:00,819 INFO L87 Difference]: Start difference. First operand 21206 states and 30629 transitions. Second operand has 50 states, 50 states have (on average 2.2) internal successors, (110), 49 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) [2022-02-10 03:39:05,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:39:05,272 INFO L93 Difference]: Finished difference Result 27070 states and 38891 transitions. [2022-02-10 03:39:05,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-02-10 03:39:05,273 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.2) internal successors, (110), 49 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 [2022-02-10 03:39:05,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:39:05,377 INFO L225 Difference]: With dead ends: 27070 [2022-02-10 03:39:05,377 INFO L226 Difference]: Without dead ends: 27043 [2022-02-10 03:39:05,378 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 52 SyntacticMatches, 3 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4879 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=2118, Invalid=13632, Unknown=0, NotChecked=0, Total=15750 [2022-02-10 03:39:05,378 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 343 mSDsluCounter, 2324 mSDsCounter, 0 mSdLazyCounter, 1802 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 2223 SdHoareTripleChecker+Invalid, 2763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 851 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:39:05,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 2223 Invalid, 2763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1802 Invalid, 0 Unknown, 851 Unchecked, 1.1s Time] [2022-02-10 03:39:05,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27043 states. [2022-02-10 03:39:05,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27043 to 21511. [2022-02-10 03:39:05,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21511 states, 21510 states have (on average 1.4444909344490935) internal successors, (31071), 21510 states have internal predecessors, (31071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:39:05,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21511 states to 21511 states and 31071 transitions. [2022-02-10 03:39:05,700 INFO L78 Accepts]: Start accepts. Automaton has 21511 states and 31071 transitions. Word has length 43 [2022-02-10 03:39:05,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:39:05,700 INFO L470 AbstractCegarLoop]: Abstraction has 21511 states and 31071 transitions. [2022-02-10 03:39:05,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.2) internal successors, (110), 49 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) [2022-02-10 03:39:05,701 INFO L276 IsEmpty]: Start isEmpty. Operand 21511 states and 31071 transitions. [2022-02-10 03:39:05,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-02-10 03:39:05,713 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:39:05,713 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:39:05,732 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Ended with exit code 0 [2022-02-10 03:39:05,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,129 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:39:05,920 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:39:05,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:39:05,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1046919104, now seen corresponding path program 127 times [2022-02-10 03:39:05,920 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:39:05,920 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407734260] [2022-02-10 03:39:05,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:39:05,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:39:05,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:39:06,324 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:39:06,324 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:39:06,324 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407734260] [2022-02-10 03:39:06,324 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407734260] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:39:06,324 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678610226] [2022-02-10 03:39:06,324 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 03:39:06,324 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:39:06,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:39:06,325 INFO L229 MonitoredProcess]: Starting monitored process 130 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:39:06,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Waiting until timeout for monitored process [2022-02-10 03:39:06,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:39:06,350 WARN L261 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 65 conjunts are in the unsatisfiable core [2022-02-10 03:39:06,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:39:07,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:07,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:07,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:07,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:07,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:07,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:07,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:07,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:07,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:07,358 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:39:07,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:07,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:07,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:07,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:07,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:07,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:07,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:07,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:07,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:07,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:07,364 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:39:07,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:07,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:07,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:07,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:07,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:07,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:07,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:07,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:07,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:07,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:07,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:07,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:07,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:07,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:07,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:07,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:07,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:07,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:07,374 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:39:07,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:07,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:07,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:07,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:07,377 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:39:07,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:07,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:07,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:07,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:07,379 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:39:07,380 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 28 disjoint index pairs (out of 78 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 49 [2022-02-10 03:39:07,398 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:39:07,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:39:09,297 INFO L353 Elim1Store]: treesize reduction 756, result has 45.3 percent of original size [2022-02-10 03:39:09,298 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 [2022-02-10 03:39:11,308 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 3 proven. 109 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:39:11,308 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678610226] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:39:11,308 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:39:11,308 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 48 [2022-02-10 03:39:11,308 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048235585] [2022-02-10 03:39:11,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:39:11,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-02-10 03:39:11,309 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:39:11,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-02-10 03:39:11,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=362, Invalid=1990, Unknown=0, NotChecked=0, Total=2352 [2022-02-10 03:39:11,309 INFO L87 Difference]: Start difference. First operand 21511 states and 31071 transitions. Second operand has 49 states, 49 states have (on average 2.183673469387755) internal successors, (107), 48 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:39:14,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:39:14,029 INFO L93 Difference]: Finished difference Result 29326 states and 42405 transitions. [2022-02-10 03:39:14,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-02-10 03:39:14,030 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.183673469387755) internal successors, (107), 48 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have 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 [2022-02-10 03:39:14,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:39:14,074 INFO L225 Difference]: With dead ends: 29326 [2022-02-10 03:39:14,074 INFO L226 Difference]: Without dead ends: 29170 [2022-02-10 03:39:14,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 52 SyntacticMatches, 4 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2696 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1558, Invalid=7562, Unknown=0, NotChecked=0, Total=9120 [2022-02-10 03:39:14,075 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 409 mSDsluCounter, 1926 mSDsCounter, 0 mSdLazyCounter, 1128 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 1585 SdHoareTripleChecker+Invalid, 1702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 450 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 03:39:14,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [409 Valid, 1585 Invalid, 1702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1128 Invalid, 0 Unknown, 450 Unchecked, 0.7s Time] [2022-02-10 03:39:14,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29170 states. [2022-02-10 03:39:14,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29170 to 20973. [2022-02-10 03:39:14,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20973 states, 20972 states have (on average 1.4442590120160215) internal successors, (30289), 20972 states have internal predecessors, (30289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:39:14,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20973 states to 20973 states and 30289 transitions. [2022-02-10 03:39:14,455 INFO L78 Accepts]: Start accepts. Automaton has 20973 states and 30289 transitions. Word has length 43 [2022-02-10 03:39:14,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:39:14,455 INFO L470 AbstractCegarLoop]: Abstraction has 20973 states and 30289 transitions. [2022-02-10 03:39:14,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.183673469387755) internal successors, (107), 48 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:39:14,456 INFO L276 IsEmpty]: Start isEmpty. Operand 20973 states and 30289 transitions. [2022-02-10 03:39:14,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-02-10 03:39:14,467 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:39:14,467 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:39:14,484 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Ended with exit code 0 [2022-02-10 03:39:14,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable132 [2022-02-10 03:39:14,668 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:39:14,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:39:14,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1060574128, now seen corresponding path program 128 times [2022-02-10 03:39:14,669 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:39:14,669 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589635876] [2022-02-10 03:39:14,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:39:14,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:39:14,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:39:15,078 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:39:15,079 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:39:15,079 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589635876] [2022-02-10 03:39:15,079 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589635876] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:39:15,079 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78776115] [2022-02-10 03:39:15,079 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:39:15,079 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:39:15,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:39:15,080 INFO L229 MonitoredProcess]: Starting monitored process 131 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:39:15,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Waiting until timeout for monitored process [2022-02-10 03:39:15,105 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:39:15,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:39:15,106 WARN L261 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 65 conjunts are in the unsatisfiable core [2022-02-10 03:39:15,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:39:16,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:16,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:16,080 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:39:16,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:16,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:16,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:16,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:16,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:16,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:16,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:16,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:16,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:16,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:16,085 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:39:16,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:16,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:16,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:16,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:16,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:16,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:16,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:16,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:16,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:16,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:16,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:16,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:16,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:16,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:16,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:16,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:16,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:16,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:16,095 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:39:16,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:16,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:16,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:16,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:16,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:16,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:16,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:16,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:16,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:16,100 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:39:16,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:16,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:16,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:16,102 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:39:16,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:16,103 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 28 disjoint index pairs (out of 78 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 49 [2022-02-10 03:39:16,121 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:39:16,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:39:18,026 INFO L353 Elim1Store]: treesize reduction 756, result has 45.3 percent of original size [2022-02-10 03:39:18,026 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 [2022-02-10 03:39:20,856 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 6 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:39:20,856 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78776115] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:39:20,857 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:39:20,857 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 48 [2022-02-10 03:39:20,857 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357314857] [2022-02-10 03:39:20,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:39:20,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-02-10 03:39:20,857 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:39:20,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-02-10 03:39:20,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=365, Invalid=1987, Unknown=0, NotChecked=0, Total=2352 [2022-02-10 03:39:20,857 INFO L87 Difference]: Start difference. First operand 20973 states and 30289 transitions. Second operand has 49 states, 49 states have (on average 2.183673469387755) internal successors, (107), 48 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:39:24,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:39:24,352 INFO L93 Difference]: Finished difference Result 28134 states and 40338 transitions. [2022-02-10 03:39:24,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-02-10 03:39:24,352 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.183673469387755) internal successors, (107), 48 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have 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 [2022-02-10 03:39:24,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:39:24,391 INFO L225 Difference]: With dead ends: 28134 [2022-02-10 03:39:24,391 INFO L226 Difference]: Without dead ends: 28053 [2022-02-10 03:39:24,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 53 SyntacticMatches, 4 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3466 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1935, Invalid=9621, Unknown=0, NotChecked=0, Total=11556 [2022-02-10 03:39:24,392 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 333 mSDsluCounter, 2209 mSDsCounter, 0 mSdLazyCounter, 1463 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 1916 SdHoareTripleChecker+Invalid, 2294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 730 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-10 03:39:24,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [333 Valid, 1916 Invalid, 2294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1463 Invalid, 0 Unknown, 730 Unchecked, 0.9s Time] [2022-02-10 03:39:24,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28053 states. [2022-02-10 03:39:24,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28053 to 21203. [2022-02-10 03:39:24,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21203 states, 21202 states have (on average 1.4441562116781437) internal successors, (30619), 21202 states have internal predecessors, (30619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:39:24,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21203 states to 21203 states and 30619 transitions. [2022-02-10 03:39:24,727 INFO L78 Accepts]: Start accepts. Automaton has 21203 states and 30619 transitions. Word has length 43 [2022-02-10 03:39:24,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:39:24,728 INFO L470 AbstractCegarLoop]: Abstraction has 21203 states and 30619 transitions. [2022-02-10 03:39:24,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.183673469387755) internal successors, (107), 48 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:39:24,728 INFO L276 IsEmpty]: Start isEmpty. Operand 21203 states and 30619 transitions. [2022-02-10 03:39:24,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-02-10 03:39:24,741 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:39:24,741 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:39:24,760 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Ended with exit code 0 [2022-02-10 03:39:24,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 131 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2022-02-10 03:39:24,942 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:39:24,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:39:24,942 INFO L85 PathProgramCache]: Analyzing trace with hash -924937600, now seen corresponding path program 129 times [2022-02-10 03:39:24,942 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:39:24,942 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869895338] [2022-02-10 03:39:24,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:39:24,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:39:24,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:39:25,349 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:39:25,349 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:39:25,349 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869895338] [2022-02-10 03:39:25,349 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869895338] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:39:25,349 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878657599] [2022-02-10 03:39:25,349 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:39:25,349 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:39:25,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:39:25,350 INFO L229 MonitoredProcess]: Starting monitored process 132 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:39:25,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Waiting until timeout for monitored process [2022-02-10 03:39:25,374 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-02-10 03:39:25,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:39:25,375 WARN L261 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 65 conjunts are in the unsatisfiable core [2022-02-10 03:39:25,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:39:26,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:26,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:26,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:26,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:26,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:26,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:26,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:26,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:26,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:26,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:26,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:26,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:26,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:26,432 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:39:26,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:26,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:26,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:26,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:26,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:26,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:26,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:26,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:26,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:26,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:26,438 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:39:26,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:26,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:26,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:26,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:26,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:26,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:26,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:26,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:26,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:26,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:26,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:26,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:26,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:26,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:26,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:26,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:26,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:26,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:26,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:26,449 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:39:26,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:26,450 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:39:26,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:26,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:26,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:26,452 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:39:26,453 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 28 disjoint index pairs (out of 78 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 49 [2022-02-10 03:39:26,470 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:39:26,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:39:28,330 INFO L353 Elim1Store]: treesize reduction 756, result has 45.3 percent of original size [2022-02-10 03:39:28,330 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 [2022-02-10 03:39:31,638 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 12 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:39:31,638 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878657599] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:39:31,638 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:39:31,638 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 48 [2022-02-10 03:39:31,638 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889854672] [2022-02-10 03:39:31,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:39:31,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-02-10 03:39:31,638 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:39:31,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-02-10 03:39:31,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=365, Invalid=1987, Unknown=0, NotChecked=0, Total=2352 [2022-02-10 03:39:31,639 INFO L87 Difference]: Start difference. First operand 21203 states and 30619 transitions. Second operand has 49 states, 49 states have (on average 2.183673469387755) internal successors, (107), 48 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:39:34,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:39:34,607 INFO L93 Difference]: Finished difference Result 27062 states and 38824 transitions. [2022-02-10 03:39:34,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-02-10 03:39:34,608 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.183673469387755) internal successors, (107), 48 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have 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 [2022-02-10 03:39:34,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:39:34,646 INFO L225 Difference]: With dead ends: 27062 [2022-02-10 03:39:34,646 INFO L226 Difference]: Without dead ends: 27044 [2022-02-10 03:39:34,647 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 54 SyntacticMatches, 4 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2625 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1354, Invalid=8152, Unknown=0, NotChecked=0, Total=9506 [2022-02-10 03:39:34,647 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 268 mSDsluCounter, 1823 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 1732 SdHoareTripleChecker+Invalid, 2061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 700 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-10 03:39:34,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 1732 Invalid, 2061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1278 Invalid, 0 Unknown, 700 Unchecked, 0.8s Time] [2022-02-10 03:39:34,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27044 states. [2022-02-10 03:39:34,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27044 to 21367. [2022-02-10 03:39:34,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21367 states, 21366 states have (on average 1.4442104277824581) internal successors, (30857), 21366 states have internal predecessors, (30857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:39:34,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21367 states to 21367 states and 30857 transitions. [2022-02-10 03:39:34,966 INFO L78 Accepts]: Start accepts. Automaton has 21367 states and 30857 transitions. Word has length 43 [2022-02-10 03:39:34,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:39:34,966 INFO L470 AbstractCegarLoop]: Abstraction has 21367 states and 30857 transitions. [2022-02-10 03:39:34,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.183673469387755) internal successors, (107), 48 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:39:34,967 INFO L276 IsEmpty]: Start isEmpty. Operand 21367 states and 30857 transitions. [2022-02-10 03:39:34,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-02-10 03:39:34,979 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:39:34,979 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:39:34,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Forceful destruction successful, exit code 0 [2022-02-10 03:39:35,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 132 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2022-02-10 03:39:35,179 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:39:35,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:39:35,179 INFO L85 PathProgramCache]: Analyzing trace with hash 161248176, now seen corresponding path program 130 times [2022-02-10 03:39:35,180 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:39:35,180 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328418794] [2022-02-10 03:39:35,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:39:35,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:39:35,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:39:35,593 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:39:35,593 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:39:35,593 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328418794] [2022-02-10 03:39:35,593 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328418794] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:39:35,593 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668376984] [2022-02-10 03:39:35,593 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:39:35,593 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:39:35,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:39:35,594 INFO L229 MonitoredProcess]: Starting monitored process 133 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:39:35,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Waiting until timeout for monitored process [2022-02-10 03:39:35,618 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:39:35,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:39:35,619 WARN L261 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 65 conjunts are in the unsatisfiable core [2022-02-10 03:39:35,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:39:36,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:36,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:36,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:36,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:36,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:36,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:36,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:36,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:36,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:36,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:36,611 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:39:36,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:36,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:36,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:36,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:36,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:36,614 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:39:36,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:36,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:36,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:36,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:36,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:36,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:36,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:36,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:36,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:36,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:36,620 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:39:36,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:36,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:36,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:36,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:36,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:36,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:36,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:36,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:36,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:36,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:36,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:36,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:36,627 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:39:36,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:36,633 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 28 disjoint index pairs (out of 66 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 49 [2022-02-10 03:39:36,653 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:39:36,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:39:38,506 INFO L353 Elim1Store]: treesize reduction 756, result has 45.3 percent of original size [2022-02-10 03:39:38,506 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 [2022-02-10 03:39:40,527 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 6 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:39:40,527 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668376984] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:39:40,527 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:39:40,527 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 19, 19] total 44 [2022-02-10 03:39:40,527 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037686286] [2022-02-10 03:39:40,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:39:40,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-02-10 03:39:40,528 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:39:40,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-02-10 03:39:40,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=1651, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 03:39:40,528 INFO L87 Difference]: Start difference. First operand 21367 states and 30857 transitions. Second operand has 45 states, 45 states have (on average 2.311111111111111) internal successors, (104), 44 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:39:43,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:39:43,292 INFO L93 Difference]: Finished difference Result 27331 states and 38987 transitions. [2022-02-10 03:39:43,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-02-10 03:39:43,293 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.311111111111111) internal successors, (104), 44 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have 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 [2022-02-10 03:39:43,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:39:43,336 INFO L225 Difference]: With dead ends: 27331 [2022-02-10 03:39:43,336 INFO L226 Difference]: Without dead ends: 27041 [2022-02-10 03:39:43,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 53 SyntacticMatches, 7 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1261 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=698, Invalid=4132, Unknown=0, NotChecked=0, Total=4830 [2022-02-10 03:39:43,337 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 563 mSDsluCounter, 4086 mSDsCounter, 0 mSdLazyCounter, 2837 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 2844 SdHoareTripleChecker+Invalid, 3191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 234 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-10 03:39:43,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [563 Valid, 2844 Invalid, 3191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 2837 Invalid, 0 Unknown, 234 Unchecked, 1.5s Time] [2022-02-10 03:39:43,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27041 states. [2022-02-10 03:39:43,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27041 to 21657. [2022-02-10 03:39:43,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21657 states, 21656 states have (on average 1.4430642777983007) internal successors, (31251), 21656 states have internal predecessors, (31251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:39:43,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21657 states to 21657 states and 31251 transitions. [2022-02-10 03:39:43,704 INFO L78 Accepts]: Start accepts. Automaton has 21657 states and 31251 transitions. Word has length 43 [2022-02-10 03:39:43,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:39:43,704 INFO L470 AbstractCegarLoop]: Abstraction has 21657 states and 31251 transitions. [2022-02-10 03:39:43,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.311111111111111) internal successors, (104), 44 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:39:43,705 INFO L276 IsEmpty]: Start isEmpty. Operand 21657 states and 31251 transitions. [2022-02-10 03:39:43,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-02-10 03:39:43,717 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:39:43,717 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:39:43,734 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Ended with exit code 0 [2022-02-10 03:39:43,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2022-02-10 03:39:43,919 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:39:43,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:39:43,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1973410080, now seen corresponding path program 131 times [2022-02-10 03:39:43,919 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:39:43,919 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721968235] [2022-02-10 03:39:43,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:39:43,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:39:43,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:39:44,324 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:39:44,324 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:39:44,324 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721968235] [2022-02-10 03:39:44,324 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721968235] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:39:44,324 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712638319] [2022-02-10 03:39:44,324 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 03:39:44,324 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:39:44,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:39:44,325 INFO L229 MonitoredProcess]: Starting monitored process 134 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:39:44,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Waiting until timeout for monitored process [2022-02-10 03:39:44,349 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-02-10 03:39:44,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:39:44,351 WARN L261 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 65 conjunts are in the unsatisfiable core [2022-02-10 03:39:44,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:39:45,368 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:39:45,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:45,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:45,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:45,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:45,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:45,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:45,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:45,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:45,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:45,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:45,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:45,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:45,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:45,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:45,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:45,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:45,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:45,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:45,379 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:39:45,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:45,380 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:39:45,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:45,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:45,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:45,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:45,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:45,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:45,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:45,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:45,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:45,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:45,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:45,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:45,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:45,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:45,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:45,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:45,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:45,389 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:39:45,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:45,391 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 28 disjoint index pairs (out of 66 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 49 [2022-02-10 03:39:45,409 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:39:45,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:39:47,235 INFO L353 Elim1Store]: treesize reduction 756, result has 45.3 percent of original size [2022-02-10 03:39:47,235 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 [2022-02-10 03:39:49,423 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 6 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:39:49,424 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712638319] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:39:49,424 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:39:49,424 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 47 [2022-02-10 03:39:49,424 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132527142] [2022-02-10 03:39:49,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:39:49,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-10 03:39:49,424 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:39:49,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-10 03:39:49,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=355, Invalid=1901, Unknown=0, NotChecked=0, Total=2256 [2022-02-10 03:39:49,424 INFO L87 Difference]: Start difference. First operand 21657 states and 31251 transitions. Second operand has 48 states, 48 states have (on average 2.1666666666666665) internal successors, (104), 47 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:39:52,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:39:52,763 INFO L93 Difference]: Finished difference Result 29047 states and 41770 transitions. [2022-02-10 03:39:52,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-02-10 03:39:52,763 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.1666666666666665) internal successors, (104), 47 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have 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 [2022-02-10 03:39:52,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:39:52,812 INFO L225 Difference]: With dead ends: 29047 [2022-02-10 03:39:52,812 INFO L226 Difference]: Without dead ends: 28745 [2022-02-10 03:39:52,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 52 SyntacticMatches, 5 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3088 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1665, Invalid=8841, Unknown=0, NotChecked=0, Total=10506 [2022-02-10 03:39:52,814 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 488 mSDsluCounter, 2758 mSDsCounter, 0 mSdLazyCounter, 1589 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 2155 SdHoareTripleChecker+Invalid, 2403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 700 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-10 03:39:52,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [488 Valid, 2155 Invalid, 2403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1589 Invalid, 0 Unknown, 700 Unchecked, 0.9s Time] [2022-02-10 03:39:52,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28745 states. [2022-02-10 03:39:53,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28745 to 21581. [2022-02-10 03:39:53,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21581 states, 21580 states have (on average 1.4435588507877664) internal successors, (31152), 21580 states have internal predecessors, (31152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:39:53,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21581 states to 21581 states and 31152 transitions. [2022-02-10 03:39:53,194 INFO L78 Accepts]: Start accepts. Automaton has 21581 states and 31152 transitions. Word has length 43 [2022-02-10 03:39:53,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:39:53,194 INFO L470 AbstractCegarLoop]: Abstraction has 21581 states and 31152 transitions. [2022-02-10 03:39:53,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.1666666666666665) internal successors, (104), 47 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:39:53,194 INFO L276 IsEmpty]: Start isEmpty. Operand 21581 states and 31152 transitions. [2022-02-10 03:39:53,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-02-10 03:39:53,207 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:39:53,207 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:39:53,226 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Ended with exit code 0 [2022-02-10 03:39:53,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 134 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2022-02-10 03:39:53,408 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:39:53,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:39:53,408 INFO L85 PathProgramCache]: Analyzing trace with hash 336045488, now seen corresponding path program 132 times [2022-02-10 03:39:53,408 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:39:53,408 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69975252] [2022-02-10 03:39:53,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:39:53,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:39:53,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:39:53,861 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:39:53,861 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:39:53,861 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69975252] [2022-02-10 03:39:53,861 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69975252] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:39:53,861 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326253338] [2022-02-10 03:39:53,861 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 03:39:53,861 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:39:53,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:39:53,862 INFO L229 MonitoredProcess]: Starting monitored process 135 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:39:53,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Waiting until timeout for monitored process [2022-02-10 03:39:53,888 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-02-10 03:39:53,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:39:53,889 WARN L261 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 65 conjunts are in the unsatisfiable core [2022-02-10 03:39:53,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:39:54,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:54,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:54,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:54,876 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:39:54,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:54,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:54,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:54,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:54,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:54,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:54,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:54,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:54,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:54,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:54,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:54,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:54,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:54,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:54,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:54,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:54,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:54,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:54,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:54,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:54,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:54,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:54,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:54,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:54,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:54,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:54,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:54,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:54,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:54,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:54,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:54,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:54,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:54,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:54,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:54,896 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:39:54,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:54,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:54,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:54,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:54,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:54,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:54,899 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:39:54,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:39:54,900 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:39:54,900 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 28 disjoint index pairs (out of 66 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 49 [2022-02-10 03:39:54,919 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:39:54,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:39:56,804 INFO L353 Elim1Store]: treesize reduction 756, result has 45.3 percent of original size [2022-02-10 03:39:56,804 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 [2022-02-10 03:39:58,745 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 9 proven. 103 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:39:58,745 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326253338] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:39:58,745 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:39:58,745 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 47 [2022-02-10 03:39:58,745 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690895755] [2022-02-10 03:39:58,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:39:58,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-10 03:39:58,745 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:39:58,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-10 03:39:58,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=354, Invalid=1902, Unknown=0, NotChecked=0, Total=2256 [2022-02-10 03:39:58,746 INFO L87 Difference]: Start difference. First operand 21581 states and 31152 transitions. Second operand has 48 states, 48 states have (on average 2.1666666666666665) internal successors, (104), 47 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:40:01,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:40:01,806 INFO L93 Difference]: Finished difference Result 27921 states and 39996 transitions. [2022-02-10 03:40:01,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-02-10 03:40:01,806 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.1666666666666665) internal successors, (104), 47 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have 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 [2022-02-10 03:40:01,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:40:01,846 INFO L225 Difference]: With dead ends: 27921 [2022-02-10 03:40:01,846 INFO L226 Difference]: Without dead ends: 27903 [2022-02-10 03:40:01,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 55 SyntacticMatches, 5 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3006 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1674, Invalid=8832, Unknown=0, NotChecked=0, Total=10506 [2022-02-10 03:40:01,847 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 313 mSDsluCounter, 1807 mSDsCounter, 0 mSdLazyCounter, 1157 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 1738 SdHoareTripleChecker+Invalid, 1865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 618 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 03:40:01,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [313 Valid, 1738 Invalid, 1865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1157 Invalid, 0 Unknown, 618 Unchecked, 0.7s Time] [2022-02-10 03:40:01,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27903 states. [2022-02-10 03:40:02,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27903 to 21902. [2022-02-10 03:40:02,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21902 states, 21901 states have (on average 1.4434044107574997) internal successors, (31612), 21901 states have internal predecessors, (31612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:40:02,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21902 states to 21902 states and 31612 transitions. [2022-02-10 03:40:02,232 INFO L78 Accepts]: Start accepts. Automaton has 21902 states and 31612 transitions. Word has length 43 [2022-02-10 03:40:02,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:40:02,232 INFO L470 AbstractCegarLoop]: Abstraction has 21902 states and 31612 transitions. [2022-02-10 03:40:02,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.1666666666666665) internal successors, (104), 47 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:40:02,232 INFO L276 IsEmpty]: Start isEmpty. Operand 21902 states and 31612 transitions. [2022-02-10 03:40:02,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-02-10 03:40:02,245 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:40:02,245 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:40:02,261 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Ended with exit code 0 [2022-02-10 03:40:02,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 135 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable137 [2022-02-10 03:40:02,446 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:40:02,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:40:02,446 INFO L85 PathProgramCache]: Analyzing trace with hash -609630656, now seen corresponding path program 133 times [2022-02-10 03:40:02,446 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:40:02,446 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775507890] [2022-02-10 03:40:02,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:40:02,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:40:02,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:40:02,804 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:40:02,804 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:40:02,804 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775507890] [2022-02-10 03:40:02,804 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775507890] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:40:02,805 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841770363] [2022-02-10 03:40:02,805 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 03:40:02,805 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:40:02,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:40:02,806 INFO L229 MonitoredProcess]: Starting monitored process 136 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:40:02,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Waiting until timeout for monitored process [2022-02-10 03:40:02,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:40:02,832 WARN L261 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 65 conjunts are in the unsatisfiable core [2022-02-10 03:40:02,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:40:03,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:03,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:03,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:03,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:03,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:03,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:03,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:03,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:03,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:03,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:03,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:03,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:03,856 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:40:03,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:03,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:03,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:03,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:03,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:03,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:03,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:03,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:03,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:03,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:03,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:03,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:03,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:03,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:03,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:03,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:03,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:03,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:03,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:03,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:03,867 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:40:03,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:03,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:03,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:03,869 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:40:03,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:03,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:03,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:03,870 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 28 disjoint index pairs (out of 55 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 49 [2022-02-10 03:40:03,888 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:40:03,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:40:05,721 INFO L353 Elim1Store]: treesize reduction 756, result has 45.3 percent of original size [2022-02-10 03:40:05,721 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 [2022-02-10 03:40:09,378 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 6 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:40:09,378 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841770363] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:40:09,378 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:40:09,379 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 19, 19] total 43 [2022-02-10 03:40:09,379 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304493969] [2022-02-10 03:40:09,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:40:09,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-02-10 03:40:09,379 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:40:09,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-02-10 03:40:09,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=1585, Unknown=0, NotChecked=0, Total=1892 [2022-02-10 03:40:09,379 INFO L87 Difference]: Start difference. First operand 21902 states and 31612 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) [2022-02-10 03:40:12,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:40:12,362 INFO L93 Difference]: Finished difference Result 28440 states and 40653 transitions. [2022-02-10 03:40:12,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-02-10 03:40:12,362 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 43 [2022-02-10 03:40:12,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:40:12,410 INFO L225 Difference]: With dead ends: 28440 [2022-02-10 03:40:12,411 INFO L226 Difference]: Without dead ends: 28126 [2022-02-10 03:40:12,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 54 SyntacticMatches, 7 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1652 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=800, Invalid=5362, Unknown=0, NotChecked=0, Total=6162 [2022-02-10 03:40:12,411 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 613 mSDsluCounter, 3078 mSDsCounter, 0 mSdLazyCounter, 2143 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 2119 SdHoareTripleChecker+Invalid, 2459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 2143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 134 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:40:12,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [613 Valid, 2119 Invalid, 2459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 2143 Invalid, 0 Unknown, 134 Unchecked, 1.2s Time] [2022-02-10 03:40:12,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28126 states. [2022-02-10 03:40:12,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28126 to 21875. [2022-02-10 03:40:12,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21875 states, 21874 states have (on average 1.4528664167504801) internal successors, (31780), 21874 states have internal predecessors, (31780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:40:12,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21875 states to 21875 states and 31780 transitions. [2022-02-10 03:40:12,815 INFO L78 Accepts]: Start accepts. Automaton has 21875 states and 31780 transitions. Word has length 43 [2022-02-10 03:40:12,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:40:12,815 INFO L470 AbstractCegarLoop]: Abstraction has 21875 states and 31780 transitions. [2022-02-10 03:40:12,816 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) [2022-02-10 03:40:12,816 INFO L276 IsEmpty]: Start isEmpty. Operand 21875 states and 31780 transitions. [2022-02-10 03:40:12,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-02-10 03:40:12,827 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:40:12,828 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:40:12,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Forceful destruction successful, exit code 0 [2022-02-10 03:40:13,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138,136 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:40:13,028 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:40:13,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:40:13,029 INFO L85 PathProgramCache]: Analyzing trace with hash 2095258688, now seen corresponding path program 134 times [2022-02-10 03:40:13,029 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:40:13,029 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239213452] [2022-02-10 03:40:13,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:40:13,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:40:13,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:40:13,523 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:40:13,523 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:40:13,523 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239213452] [2022-02-10 03:40:13,524 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239213452] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:40:13,524 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743451010] [2022-02-10 03:40:13,524 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:40:13,524 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:40:13,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:40:13,525 INFO L229 MonitoredProcess]: Starting monitored process 137 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:40:13,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Waiting until timeout for monitored process [2022-02-10 03:40:13,549 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:40:13,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:40:13,550 WARN L261 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 65 conjunts are in the unsatisfiable core [2022-02-10 03:40:13,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:40:14,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:14,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:14,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:14,563 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:40:14,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:14,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:14,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:14,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:14,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:14,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:14,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:14,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:14,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:14,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:14,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:14,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:14,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:14,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:14,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:14,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:14,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:14,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:14,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:14,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:14,574 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:40:14,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:14,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:14,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:14,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:14,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:14,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:14,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:14,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:14,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:14,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:14,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:14,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:14,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:14,581 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:40:14,582 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 28 disjoint index pairs (out of 55 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 49 [2022-02-10 03:40:14,601 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:40:14,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:40:16,470 INFO L353 Elim1Store]: treesize reduction 756, result has 45.3 percent of original size [2022-02-10 03:40:16,470 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 [2022-02-10 03:40:19,757 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 9 proven. 103 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:40:19,758 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743451010] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:40:19,758 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:40:19,758 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2022-02-10 03:40:19,758 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013415196] [2022-02-10 03:40:19,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:40:19,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-10 03:40:19,758 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:40:19,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-10 03:40:19,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=345, Invalid=1817, Unknown=0, NotChecked=0, Total=2162 [2022-02-10 03:40:19,758 INFO L87 Difference]: Start difference. First operand 21875 states and 31780 transitions. Second operand has 47 states, 47 states have (on average 2.148936170212766) internal successors, (101), 46 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) [2022-02-10 03:40:22,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:40:22,683 INFO L93 Difference]: Finished difference Result 26113 states and 37708 transitions. [2022-02-10 03:40:22,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-02-10 03:40:22,683 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.148936170212766) internal successors, (101), 46 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 43 [2022-02-10 03:40:22,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:40:22,722 INFO L225 Difference]: With dead ends: 26113 [2022-02-10 03:40:22,722 INFO L226 Difference]: Without dead ends: 26095 [2022-02-10 03:40:22,723 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 55 SyntacticMatches, 6 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2616 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1388, Invalid=8314, Unknown=0, NotChecked=0, Total=9702 [2022-02-10 03:40:22,724 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 280 mSDsluCounter, 1895 mSDsCounter, 0 mSdLazyCounter, 1294 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 1731 SdHoareTripleChecker+Invalid, 1902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 523 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-10 03:40:22,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 1731 Invalid, 1902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1294 Invalid, 0 Unknown, 523 Unchecked, 0.8s Time] [2022-02-10 03:40:22,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26095 states. [2022-02-10 03:40:23,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26095 to 22327. [2022-02-10 03:40:23,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22327 states, 22326 states have (on average 1.4528352593388874) internal successors, (32436), 22326 states have internal predecessors, (32436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:40:23,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22327 states to 22327 states and 32436 transitions. [2022-02-10 03:40:23,103 INFO L78 Accepts]: Start accepts. Automaton has 22327 states and 32436 transitions. Word has length 43 [2022-02-10 03:40:23,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:40:23,103 INFO L470 AbstractCegarLoop]: Abstraction has 22327 states and 32436 transitions. [2022-02-10 03:40:23,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.148936170212766) internal successors, (101), 46 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) [2022-02-10 03:40:23,103 INFO L276 IsEmpty]: Start isEmpty. Operand 22327 states and 32436 transitions. [2022-02-10 03:40:23,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-02-10 03:40:23,115 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:40:23,115 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:40:23,134 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Ended with exit code 0 [2022-02-10 03:40:23,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 137 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable139 [2022-02-10 03:40:23,315 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:40:23,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:40:23,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1288897168, now seen corresponding path program 135 times [2022-02-10 03:40:23,316 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:40:23,316 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098911708] [2022-02-10 03:40:23,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:40:23,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:40:23,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:40:23,713 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:40:23,713 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:40:23,714 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098911708] [2022-02-10 03:40:23,714 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098911708] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:40:23,714 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534635484] [2022-02-10 03:40:23,714 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:40:23,714 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:40:23,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:40:23,715 INFO L229 MonitoredProcess]: Starting monitored process 138 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:40:23,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Waiting until timeout for monitored process [2022-02-10 03:40:23,740 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-02-10 03:40:23,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:40:23,741 WARN L261 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 65 conjunts are in the unsatisfiable core [2022-02-10 03:40:23,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:40:24,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:24,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:24,661 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:40:24,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:24,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:24,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:24,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:24,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:24,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:24,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:24,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:24,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:24,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:24,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:24,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:24,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:24,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:24,670 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:40:24,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:24,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:24,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:24,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:24,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:24,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:24,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:24,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:24,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:24,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:24,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:24,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:24,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:24,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:24,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:24,679 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:40:24,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:24,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:24,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:40:24,681 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 28 disjoint index pairs (out of 55 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 49 [2022-02-10 03:40:24,700 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:40:24,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:40:26,554 INFO L353 Elim1Store]: treesize reduction 756, result has 45.3 percent of original size [2022-02-10 03:40:26,555 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 [2022-02-10 03:40:28,814 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 12 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:40:28,815 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534635484] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:40:28,815 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:40:28,815 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2022-02-10 03:40:28,815 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507926669] [2022-02-10 03:40:28,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:40:28,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-10 03:40:28,815 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:40:28,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-10 03:40:28,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=1833, Unknown=0, NotChecked=0, Total=2162 [2022-02-10 03:40:28,816 INFO L87 Difference]: Start difference. First operand 22327 states and 32436 transitions. Second operand has 47 states, 47 states have (on average 2.106382978723404) internal successors, (99), 46 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2022-02-10 03:40:31,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-02-10 03:40:31,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 52 SyntacticMatches, 6 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2461 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1297, Invalid=7633, Unknown=0, NotChecked=0, Total=8930 [2022-02-10 03:40:31,962 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 217 mSDsluCounter, 1136 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 1159 SdHoareTripleChecker+Invalid, 1312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 03:40:31,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [217 Valid, 1159 Invalid, 1312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 1132 Invalid, 0 Unknown, 25 Unchecked, 0.7s Time] [2022-02-10 03:40:31,963 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (2 of 3 remaining) [2022-02-10 03:40:31,979 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Ended with exit code 0 [2022-02-10 03:40:32,000 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-02-10 03:40:32,002 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-02-10 03:40:32,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,138 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:40:32,163 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (22327states) and FLOYD_HOARE automaton (currently 68 states, 47 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 95 known predicates. [2022-02-10 03:40:32,165 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-02-10 03:40:32,165 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-02-10 03:40:32,166 INFO L732 BasicCegarLoop]: Path program histogram: [135, 3, 1, 1, 1] [2022-02-10 03:40:32,168 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-10 03:40:32,168 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-10 03:40:32,169 INFO L202 PluginConnector]: Adding new model send-receive-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.02 03:40:32 BasicIcfg [2022-02-10 03:40:32,169 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-10 03:40:32,169 INFO L158 Benchmark]: Toolchain (without parser) took 768375.37ms. Allocated memory was 194.0MB in the beginning and 1.0GB in the end (delta: 806.4MB). Free memory was 154.7MB in the beginning and 381.5MB in the end (delta: -226.7MB). Peak memory consumption was 579.6MB. Max. memory is 8.0GB. [2022-02-10 03:40:32,169 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.13ms. Allocated memory is still 194.0MB. Free memory is still 155.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-10 03:40:32,169 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.05ms. Allocated memory is still 194.0MB. Free memory was 154.7MB in the beginning and 153.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-10 03:40:32,169 INFO L158 Benchmark]: Boogie Preprocessor took 13.85ms. Allocated memory is still 194.0MB. Free memory was 153.2MB in the beginning and 152.2MB in the end (delta: 953.4kB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-10 03:40:32,169 INFO L158 Benchmark]: RCFGBuilder took 172.82ms. Allocated memory is still 194.0MB. Free memory was 152.2MB in the beginning and 143.1MB in the end (delta: 9.1MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-02-10 03:40:32,169 INFO L158 Benchmark]: TraceAbstraction took 768147.59ms. Allocated memory was 194.0MB in the beginning and 1.0GB in the end (delta: 806.4MB). Free memory was 142.6MB in the beginning and 381.5MB in the end (delta: -238.9MB). Peak memory consumption was 567.1MB. Max. memory is 8.0GB. [2022-02-10 03:40:32,170 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 0.13ms. Allocated memory is still 194.0MB. Free memory is still 155.9MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 36.05ms. Allocated memory is still 194.0MB. Free memory was 154.7MB in the beginning and 153.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 13.85ms. Allocated memory is still 194.0MB. Free memory was 153.2MB in the beginning and 152.2MB in the end (delta: 953.4kB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 172.82ms. Allocated memory is still 194.0MB. Free memory was 152.2MB in the beginning and 143.1MB in the end (delta: 9.1MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 768147.59ms. Allocated memory was 194.0MB in the beginning and 1.0GB in the end (delta: 806.4MB). Free memory was 142.6MB in the beginning and 381.5MB in the end (delta: -238.9MB). Peak memory consumption was 567.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Independence queries for same thread: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 60]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while BasicCegarLoop was constructing difference of abstraction (22327states) and FLOYD_HOARE automaton (currently 68 states, 47 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 95 known predicates. - TimeoutResultAtElement [Line: 55]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (22327states) and FLOYD_HOARE automaton (currently 68 states, 47 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 95 known predicates. - TimeoutResultAtElement [Line: 55]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (22327states) and FLOYD_HOARE automaton (currently 68 states, 47 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 95 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 28 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 768.1s, OverallIterations: 141, TraceHistogramMax: 8, PathProgramHistogramMax: 135, EmptinessCheckTime: 0.6s, AutomataDifference: 295.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, PartialOrderReductionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 41879 SdHoareTripleChecker+Valid, 76.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 41879 mSDsluCounter, 164764 SdHoareTripleChecker+Invalid, 66.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 39387 IncrementalHoareTripleChecker+Unchecked, 202694 mSDsCounter, 12272 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 135804 IncrementalHoareTripleChecker+Invalid, 187463 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12272 mSolverCounterUnsat, 9156 mSDtfsCounter, 135804 mSolverCounterSat, 0.6s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 16834 GetRequests, 6555 SyntacticMatches, 565 SemanticMatches, 9713 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263713 ImplicationChecksByTransitivity, 310.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22327occurred in iteration=140, InterpolantAutomatonStates: 7956, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 13.9s AutomataMinimizationTime, 140 MinimizatonAttempts, 350200 StatesRemovedByMinimization, 140 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 425.2s InterpolantComputationTime, 9878 NumberOfCodeBlocks, 9878 NumberOfCodeBlocksAsserted, 665 NumberOfCheckSat, 14375 ConstructedInterpolants, 625 QuantifiedInterpolants, 526914 SizeOfPredicates, 410 NumberOfNonLiveVariables, 12472 ConjunctsInSsa, 6637 ConjunctsInUnsatCore, 415 InterpolantComputations, 4 PerfectInterpolantSequences, 1476/29734 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown