/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/barrier-loop.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-?-bc289cb [2022-01-28 15:03:05,269 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-28 15:03:05,270 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-28 15:03:05,322 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-28 15:03:05,353 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-01-28 15:03:05,370 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-28 15:03:05,371 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-28 15:03:05,371 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-28 15:03:05,371 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-28 15:03:05,371 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-28 15:03:05,371 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-28 15:03:05,372 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-28 15:03:05,372 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-28 15:03:05,372 INFO L138 SettingsManager]: * Use SBE=true [2022-01-28 15:03:05,372 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-28 15:03:05,372 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-28 15:03:05,372 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-28 15:03:05,372 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-28 15:03:05,372 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-28 15:03:05,373 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-28 15:03:05,373 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-28 15:03:05,373 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-28 15:03:05,373 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-28 15:03:05,373 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-28 15:03:05,373 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-28 15:03:05,373 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-28 15:03:05,373 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-28 15:03:05,373 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-28 15:03:05,373 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-28 15:03:05,373 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-28 15:03:05,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-28 15:03:05,374 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-28 15:03:05,374 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-28 15:03:05,374 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-28 15:03:05,374 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-28 15:03:05,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-28 15:03:05,374 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-28 15:03:05,374 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-28 15:03:05,374 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-28 15:03:05,520 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-28 15:03:05,544 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-28 15:03:05,546 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-28 15:03:05,547 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-01-28 15:03:05,548 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-01-28 15:03:05,549 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/barrier-loop.wvr.bpl [2022-01-28 15:03:05,549 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/barrier-loop.wvr.bpl' [2022-01-28 15:03:05,574 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-28 15:03:05,575 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-28 15:03:05,577 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-28 15:03:05,577 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-28 15:03:05,577 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-28 15:03:05,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.01 03:03:05" (1/1) ... [2022-01-28 15:03:05,593 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.01 03:03:05" (1/1) ... [2022-01-28 15:03:05,610 INFO L137 Inliner]: procedures = 7, calls = 6, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-01-28 15:03:05,611 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-28 15:03:05,613 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-28 15:03:05,613 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-28 15:03:05,613 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-28 15:03:05,618 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.01 03:03:05" (1/1) ... [2022-01-28 15:03:05,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.01 03:03:05" (1/1) ... [2022-01-28 15:03:05,620 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.01 03:03:05" (1/1) ... [2022-01-28 15:03:05,620 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.01 03:03:05" (1/1) ... [2022-01-28 15:03:05,626 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.01 03:03:05" (1/1) ... [2022-01-28 15:03:05,629 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.01 03:03:05" (1/1) ... [2022-01-28 15:03:05,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.01 03:03:05" (1/1) ... [2022-01-28 15:03:05,635 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-28 15:03:05,638 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-28 15:03:05,638 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-28 15:03:05,638 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-28 15:03:05,639 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.01 03:03:05" (1/1) ... [2022-01-28 15:03:05,649 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-28 15:03:05,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 15:03:05,672 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-28 15:03:05,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-28 15:03:05,705 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-01-28 15:03:05,705 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-28 15:03:05,705 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-28 15:03:05,705 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-01-28 15:03:05,705 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-28 15:03:05,706 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-28 15:03:05,706 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-01-28 15:03:05,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-28 15:03:05,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-28 15:03:05,706 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2022-01-28 15:03:05,706 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-01-28 15:03:05,706 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-01-28 15:03:05,706 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2022-01-28 15:03:05,706 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-01-28 15:03:05,706 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-01-28 15:03:05,706 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2022-01-28 15:03:05,706 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-01-28 15:03:05,706 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-01-28 15:03:05,707 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2022-01-28 15:03:05,707 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-01-28 15:03:05,707 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-01-28 15:03:05,707 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-28 15:03:05,742 INFO L234 CfgBuilder]: Building ICFG [2022-01-28 15:03:05,743 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-28 15:03:05,857 INFO L275 CfgBuilder]: Performing block encoding [2022-01-28 15:03:05,866 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-28 15:03:05,867 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-01-28 15:03:05,868 INFO L202 PluginConnector]: Adding new model barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 03:03:05 BoogieIcfgContainer [2022-01-28 15:03:05,868 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-28 15:03:05,869 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-28 15:03:05,869 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-28 15:03:05,885 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-28 15:03:05,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.01 03:03:05" (1/2) ... [2022-01-28 15:03:05,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a7d18c1 and model type barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 03:03:05, skipping insertion in model container [2022-01-28 15:03:05,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 03:03:05" (2/2) ... [2022-01-28 15:03:05,887 INFO L111 eAbstractionObserver]: Analyzing ICFG barrier-loop.wvr.bpl [2022-01-28 15:03:05,890 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-28 15:03:05,890 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-28 15:03:05,890 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-28 15:03:05,890 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-28 15:03:05,960 INFO L148 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2022-01-28 15:03:05,987 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-28 15:03:05,992 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-28 15:03:05,992 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-01-28 15:03:06,000 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 84 places, 73 transitions, 218 flow [2022-01-28 15:03:06,454 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 10820 states, 10819 states have (on average 4.095295313799797) internal successors, (44307), 10819 states have internal predecessors, (44307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 15:03:06,522 INFO L276 IsEmpty]: Start isEmpty. Operand has 10820 states, 10819 states have (on average 4.095295313799797) internal successors, (44307), 10819 states have internal predecessors, (44307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 15:03:06,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-28 15:03:06,576 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 15:03:06,577 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 15:03:06,578 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8INUSE_VIOLATION (and 7 more)] === [2022-01-28 15:03:06,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 15:03:06,584 INFO L85 PathProgramCache]: Analyzing trace with hash 513493419, now seen corresponding path program 1 times [2022-01-28 15:03:06,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 15:03:06,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590988005] [2022-01-28 15:03:06,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 15:03:06,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 15:03:06,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 15:03:06,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 15:03:06,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 15:03:06,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590988005] [2022-01-28 15:03:06,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590988005] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 15:03:06,733 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 15:03:06,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-28 15:03:06,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941409481] [2022-01-28 15:03:06,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 15:03:06,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-28 15:03:06,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 15:03:06,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-28 15:03:06,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-28 15:03:06,778 INFO L87 Difference]: Start difference. First operand has 10820 states, 10819 states have (on average 4.095295313799797) internal successors, (44307), 10819 states have internal predecessors, (44307), 0 states have call successors, (0), 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 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 15:03:06,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 15:03:06,965 INFO L93 Difference]: Finished difference Result 11214 states and 45854 transitions. [2022-01-28 15:03:06,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-28 15:03:06,967 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-01-28 15:03:06,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 15:03:07,111 INFO L225 Difference]: With dead ends: 11214 [2022-01-28 15:03:07,111 INFO L226 Difference]: Without dead ends: 11193 [2022-01-28 15:03:07,112 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 [2022-01-28 15:03:07,114 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 8 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 15:03:07,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 60 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 15:03:07,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11193 states. [2022-01-28 15:03:07,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11193 to 10962. [2022-01-28 15:03:07,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10962 states, 10961 states have (on average 4.090958854119149) internal successors, (44841), 10961 states have internal predecessors, (44841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 15:03:07,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10962 states to 10962 states and 44841 transitions. [2022-01-28 15:03:07,851 INFO L78 Accepts]: Start accepts. Automaton has 10962 states and 44841 transitions. Word has length 23 [2022-01-28 15:03:07,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 15:03:07,852 INFO L470 AbstractCegarLoop]: Abstraction has 10962 states and 44841 transitions. [2022-01-28 15:03:07,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 15:03:07,853 INFO L276 IsEmpty]: Start isEmpty. Operand 10962 states and 44841 transitions. [2022-01-28 15:03:07,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-28 15:03:07,888 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 15:03:07,888 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 15:03:07,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-28 15:03:07,889 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8INUSE_VIOLATION (and 7 more)] === [2022-01-28 15:03:07,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 15:03:07,891 INFO L85 PathProgramCache]: Analyzing trace with hash 2098976562, now seen corresponding path program 1 times [2022-01-28 15:03:07,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 15:03:07,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202870476] [2022-01-28 15:03:07,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 15:03:07,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 15:03:07,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 15:03:07,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 15:03:07,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 15:03:07,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202870476] [2022-01-28 15:03:07,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202870476] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 15:03:07,943 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 15:03:07,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-28 15:03:07,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235352628] [2022-01-28 15:03:07,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 15:03:07,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-28 15:03:07,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 15:03:07,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-28 15:03:07,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-28 15:03:07,945 INFO L87 Difference]: Start difference. First operand 10962 states and 44841 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 15:03:08,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 15:03:08,151 INFO L93 Difference]: Finished difference Result 13038 states and 52625 transitions. [2022-01-28 15:03:08,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-28 15:03:08,152 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 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 31 [2022-01-28 15:03:08,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 15:03:08,212 INFO L225 Difference]: With dead ends: 13038 [2022-01-28 15:03:08,213 INFO L226 Difference]: Without dead ends: 12721 [2022-01-28 15:03:08,214 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 [2022-01-28 15:03:08,221 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 47 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 15:03:08,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 97 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 15:03:08,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12721 states. [2022-01-28 15:03:08,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12721 to 11889. [2022-01-28 15:03:08,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11889 states, 11888 states have (on average 4.034909152086137) internal successors, (47967), 11888 states have internal predecessors, (47967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 15:03:08,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11889 states to 11889 states and 47967 transitions. [2022-01-28 15:03:08,710 INFO L78 Accepts]: Start accepts. Automaton has 11889 states and 47967 transitions. Word has length 31 [2022-01-28 15:03:08,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 15:03:08,711 INFO L470 AbstractCegarLoop]: Abstraction has 11889 states and 47967 transitions. [2022-01-28 15:03:08,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 15:03:08,711 INFO L276 IsEmpty]: Start isEmpty. Operand 11889 states and 47967 transitions. [2022-01-28 15:03:08,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-28 15:03:08,747 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 15:03:08,747 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 15:03:08,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-28 15:03:08,748 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8INUSE_VIOLATION (and 7 more)] === [2022-01-28 15:03:08,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 15:03:08,749 INFO L85 PathProgramCache]: Analyzing trace with hash 2052651792, now seen corresponding path program 1 times [2022-01-28 15:03:08,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 15:03:08,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081491309] [2022-01-28 15:03:08,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 15:03:08,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 15:03:08,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 15:03:08,797 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 15:03:08,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 15:03:08,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081491309] [2022-01-28 15:03:08,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081491309] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 15:03:08,799 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 15:03:08,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-28 15:03:08,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748713898] [2022-01-28 15:03:08,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 15:03:08,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-28 15:03:08,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 15:03:08,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-28 15:03:08,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-28 15:03:08,800 INFO L87 Difference]: Start difference. First operand 11889 states and 47967 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 15:03:08,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 15:03:08,907 INFO L93 Difference]: Finished difference Result 11681 states and 45149 transitions. [2022-01-28 15:03:08,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-28 15:03:08,907 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 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 31 [2022-01-28 15:03:08,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 15:03:08,943 INFO L225 Difference]: With dead ends: 11681 [2022-01-28 15:03:08,943 INFO L226 Difference]: Without dead ends: 9378 [2022-01-28 15:03:08,944 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 [2022-01-28 15:03:08,944 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 44 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 15:03:08,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 96 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 15:03:09,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9378 states. [2022-01-28 15:03:09,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9378 to 9378. [2022-01-28 15:03:09,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9378 states, 9377 states have (on average 3.84099392129679) internal successors, (36017), 9377 states have internal predecessors, (36017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 15:03:09,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9378 states to 9378 states and 36017 transitions. [2022-01-28 15:03:09,247 INFO L78 Accepts]: Start accepts. Automaton has 9378 states and 36017 transitions. Word has length 31 [2022-01-28 15:03:09,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 15:03:09,247 INFO L470 AbstractCegarLoop]: Abstraction has 9378 states and 36017 transitions. [2022-01-28 15:03:09,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 15:03:09,248 INFO L276 IsEmpty]: Start isEmpty. Operand 9378 states and 36017 transitions. [2022-01-28 15:03:09,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-28 15:03:09,267 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 15:03:09,267 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 15:03:09,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-28 15:03:09,267 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8INUSE_VIOLATION (and 7 more)] === [2022-01-28 15:03:09,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 15:03:09,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1264094886, now seen corresponding path program 1 times [2022-01-28 15:03:09,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 15:03:09,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170855259] [2022-01-28 15:03:09,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 15:03:09,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 15:03:09,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 15:03:09,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 15:03:09,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 15:03:09,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170855259] [2022-01-28 15:03:09,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170855259] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 15:03:09,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 15:03:09,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-28 15:03:09,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466459533] [2022-01-28 15:03:09,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 15:03:09,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-28 15:03:09,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 15:03:09,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-28 15:03:09,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-28 15:03:09,301 INFO L87 Difference]: Start difference. First operand 9378 states and 36017 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 15:03:09,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 15:03:09,484 INFO L93 Difference]: Finished difference Result 11158 states and 41887 transitions. [2022-01-28 15:03:09,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-28 15:03:09,484 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 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 31 [2022-01-28 15:03:09,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 15:03:09,519 INFO L225 Difference]: With dead ends: 11158 [2022-01-28 15:03:09,519 INFO L226 Difference]: Without dead ends: 10600 [2022-01-28 15:03:09,521 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 [2022-01-28 15:03:09,527 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 38 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 15:03:09,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 97 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 15:03:09,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10600 states. [2022-01-28 15:03:09,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10600 to 10244. [2022-01-28 15:03:09,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10244 states, 10243 states have (on average 3.7574929219955093) internal successors, (38488), 10243 states have internal predecessors, (38488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 15:03:09,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10244 states to 10244 states and 38488 transitions. [2022-01-28 15:03:09,746 INFO L78 Accepts]: Start accepts. Automaton has 10244 states and 38488 transitions. Word has length 31 [2022-01-28 15:03:09,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 15:03:09,746 INFO L470 AbstractCegarLoop]: Abstraction has 10244 states and 38488 transitions. [2022-01-28 15:03:09,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 15:03:09,749 INFO L276 IsEmpty]: Start isEmpty. Operand 10244 states and 38488 transitions. [2022-01-28 15:03:09,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-28 15:03:09,836 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 15:03:09,836 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 15:03:09,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-28 15:03:09,836 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8INUSE_VIOLATION (and 7 more)] === [2022-01-28 15:03:09,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 15:03:09,837 INFO L85 PathProgramCache]: Analyzing trace with hash 550542672, now seen corresponding path program 1 times [2022-01-28 15:03:09,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 15:03:09,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122651564] [2022-01-28 15:03:09,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 15:03:09,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 15:03:09,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 15:03:09,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 15:03:09,855 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 15:03:09,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122651564] [2022-01-28 15:03:09,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122651564] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 15:03:09,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 15:03:09,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-28 15:03:09,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261781950] [2022-01-28 15:03:09,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 15:03:09,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-28 15:03:09,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 15:03:09,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-28 15:03:09,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-28 15:03:09,857 INFO L87 Difference]: Start difference. First operand 10244 states and 38488 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 15:03:09,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 15:03:09,928 INFO L93 Difference]: Finished difference Result 9700 states and 34735 transitions. [2022-01-28 15:03:09,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-28 15:03:09,929 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 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 31 [2022-01-28 15:03:09,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 15:03:09,956 INFO L225 Difference]: With dead ends: 9700 [2022-01-28 15:03:09,956 INFO L226 Difference]: Without dead ends: 8001 [2022-01-28 15:03:09,956 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 [2022-01-28 15:03:09,957 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 37 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 15:03:09,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 96 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 15:03:09,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8001 states. [2022-01-28 15:03:10,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8001 to 8001. [2022-01-28 15:03:10,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8001 states, 8000 states have (on average 3.590375) internal successors, (28723), 8000 states have internal predecessors, (28723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 15:03:10,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8001 states to 8001 states and 28723 transitions. [2022-01-28 15:03:10,157 INFO L78 Accepts]: Start accepts. Automaton has 8001 states and 28723 transitions. Word has length 31 [2022-01-28 15:03:10,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 15:03:10,157 INFO L470 AbstractCegarLoop]: Abstraction has 8001 states and 28723 transitions. [2022-01-28 15:03:10,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 15:03:10,158 INFO L276 IsEmpty]: Start isEmpty. Operand 8001 states and 28723 transitions. [2022-01-28 15:03:10,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-28 15:03:10,175 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 15:03:10,175 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 15:03:10,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-28 15:03:10,175 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8INUSE_VIOLATION (and 7 more)] === [2022-01-28 15:03:10,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 15:03:10,176 INFO L85 PathProgramCache]: Analyzing trace with hash 48999775, now seen corresponding path program 1 times [2022-01-28 15:03:10,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 15:03:10,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660144230] [2022-01-28 15:03:10,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 15:03:10,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 15:03:10,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 15:03:10,201 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 15:03:10,201 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 15:03:10,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660144230] [2022-01-28 15:03:10,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660144230] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 15:03:10,201 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 15:03:10,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-28 15:03:10,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284889163] [2022-01-28 15:03:10,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 15:03:10,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-28 15:03:10,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 15:03:10,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-28 15:03:10,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-28 15:03:10,202 INFO L87 Difference]: Start difference. First operand 8001 states and 28723 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 15:03:10,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 15:03:10,269 INFO L93 Difference]: Finished difference Result 6666 states and 23386 transitions. [2022-01-28 15:03:10,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-28 15:03:10,270 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-01-28 15:03:10,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 15:03:10,289 INFO L225 Difference]: With dead ends: 6666 [2022-01-28 15:03:10,289 INFO L226 Difference]: Without dead ends: 6666 [2022-01-28 15:03:10,289 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 [2022-01-28 15:03:10,290 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 32 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 15:03:10,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 96 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 15:03:10,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6666 states. [2022-01-28 15:03:10,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6666 to 6666. [2022-01-28 15:03:10,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6666 states, 6665 states have (on average 3.508777194298575) internal successors, (23386), 6665 states have internal predecessors, (23386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 15:03:10,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6666 states to 6666 states and 23386 transitions. [2022-01-28 15:03:10,491 INFO L78 Accepts]: Start accepts. Automaton has 6666 states and 23386 transitions. Word has length 39 [2022-01-28 15:03:10,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 15:03:10,491 INFO L470 AbstractCegarLoop]: Abstraction has 6666 states and 23386 transitions. [2022-01-28 15:03:10,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 15:03:10,491 INFO L276 IsEmpty]: Start isEmpty. Operand 6666 states and 23386 transitions. [2022-01-28 15:03:10,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-28 15:03:10,505 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 15:03:10,505 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 15:03:10,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-28 15:03:10,506 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8INUSE_VIOLATION (and 7 more)] === [2022-01-28 15:03:10,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 15:03:10,506 INFO L85 PathProgramCache]: Analyzing trace with hash 938050459, now seen corresponding path program 2 times [2022-01-28 15:03:10,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 15:03:10,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834401] [2022-01-28 15:03:10,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 15:03:10,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 15:03:10,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-28 15:03:10,529 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-28 15:03:10,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-28 15:03:10,560 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-28 15:03:10,560 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-28 15:03:10,561 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (10 of 11 remaining) [2022-01-28 15:03:10,564 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0INUSE_VIOLATION (9 of 11 remaining) [2022-01-28 15:03:10,564 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err7INUSE_VIOLATION (8 of 11 remaining) [2022-01-28 15:03:10,565 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8INUSE_VIOLATION (7 of 11 remaining) [2022-01-28 15:03:10,565 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9INUSE_VIOLATION (6 of 11 remaining) [2022-01-28 15:03:10,565 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread4Err3INUSE_VIOLATION (5 of 11 remaining) [2022-01-28 15:03:10,565 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread4Err5INUSE_VIOLATION (4 of 11 remaining) [2022-01-28 15:03:10,565 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Thread1of1ForFork2Err1INUSE_VIOLATION (3 of 11 remaining) [2022-01-28 15:03:10,565 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Thread1of1ForFork2Err2INUSE_VIOLATION (2 of 11 remaining) [2022-01-28 15:03:10,565 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread4Thread1of1ForFork3Err4INUSE_VIOLATION (1 of 11 remaining) [2022-01-28 15:03:10,565 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread4Thread1of1ForFork3Err6INUSE_VIOLATION (0 of 11 remaining) [2022-01-28 15:03:10,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-28 15:03:10,568 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2022-01-28 15:03:10,570 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-28 15:03:10,571 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-28 15:03:10,601 INFO L202 PluginConnector]: Adding new model barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 03:03:10 BasicIcfg [2022-01-28 15:03:10,601 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-28 15:03:10,601 INFO L158 Benchmark]: Toolchain (without parser) took 5025.84ms. Allocated memory was 194.0MB in the beginning and 2.5GB in the end (delta: 2.3GB). Free memory was 159.3MB in the beginning and 2.1GB in the end (delta: -2.0GB). Peak memory consumption was 377.8MB. Max. memory is 8.0GB. [2022-01-28 15:03:10,601 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.12ms. Allocated memory is still 194.0MB. Free memory is still 160.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-28 15:03:10,602 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.98ms. Allocated memory is still 194.0MB. Free memory was 159.2MB in the beginning and 157.6MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-28 15:03:10,602 INFO L158 Benchmark]: Boogie Preprocessor took 22.50ms. Allocated memory is still 194.0MB. Free memory was 157.6MB in the beginning and 156.6MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-28 15:03:10,602 INFO L158 Benchmark]: RCFGBuilder took 230.36ms. Allocated memory is still 194.0MB. Free memory was 156.6MB in the beginning and 146.4MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-01-28 15:03:10,602 INFO L158 Benchmark]: TraceAbstraction took 4731.80ms. Allocated memory was 194.0MB in the beginning and 2.5GB in the end (delta: 2.3GB). Free memory was 146.0MB in the beginning and 2.1GB in the end (delta: -2.0GB). Peak memory consumption was 365.2MB. Max. memory is 8.0GB. [2022-01-28 15:03:10,603 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 0.12ms. Allocated memory is still 194.0MB. Free memory is still 160.5MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 34.98ms. Allocated memory is still 194.0MB. Free memory was 159.2MB in the beginning and 157.6MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 22.50ms. Allocated memory is still 194.0MB. Free memory was 157.6MB in the beginning and 156.6MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 230.36ms. Allocated memory is still 194.0MB. Free memory was 156.6MB in the beginning and 146.4MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 4731.80ms. Allocated memory was 194.0MB in the beginning and 2.5GB in the end (delta: 2.3GB). Free memory was 146.0MB in the beginning and 2.1GB in the end (delta: -2.0GB). Peak memory consumption was 365.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 121]: assertion can be violated assertion can be violated We found a FailurePath: [L115] 0 assume x_0 == x_8 && y_1 == y_9; VAL [x_0=-1, x_8=-1, y_1=-1, y_9=-1] [L116] FORK 0 fork 1 thread1(); VAL [x_0=-1, x_8=-1, y_1=-1, y_9=-1] [L60] 1 f1_2 := false; [L61] 1 f2_3 := false; VAL [f1_2=false, f2_3=false, x_0=-1, x_8=-1, y_1=-1, y_9=-1] [L117] FORK 0 fork 4, 4, 4, 4 thread4(); VAL [f1_2=false, f2_3=false, x_0=-1, x_8=-1, y_1=-1, y_9=-1] [L103] 2 f1_10 := false; [L104] 2 f2_11 := false; VAL [f1_10=false, f1_2=false, f2_11=false, f2_3=false, x_0=-1, x_8=-1, y_1=-1, y_9=-1] [L106] FORK 2 fork 5, 5, 5, 5, 5 thread5(); VAL [f1_10=false, f1_2=false, f2_11=false, f2_3=false, x_0=-1, x_8=-1, y_1=-1, y_9=-1] [L73] 3 temp_12 := x_8; VAL [f1_10=false, f1_2=false, f2_11=false, f2_3=false, temp_12=-1, x_0=-1, x_8=-1, y_1=-1, y_9=-1] [L74] 3 x_8 := temp_12 + 1; VAL [f1_10=false, f1_2=false, f2_11=false, f2_3=false, temp_12=-1, x_0=-1, x_8=0, y_1=-1, y_9=-1] [L75] 3 f1_10 := true; VAL [f1_10=true, f1_2=false, f2_11=false, f2_3=false, temp_12=-1, x_0=-1, x_8=0, y_1=-1, y_9=-1] [L107] FORK 2 fork 6, 6, 6, 6, 6, 6 thread6(); VAL [f1_10=true, f1_2=false, f2_11=false, f2_3=false, temp_12=-1, x_0=-1, x_8=0, y_1=-1, y_9=-1] [L88] 4 temp_14 := y_9; VAL [f1_10=true, f1_2=false, f2_11=false, f2_3=false, temp_12=-1, temp_14=-1, x_0=-1, x_8=0, y_1=-1, y_9=-1] [L89] 4 y_9 := temp_14 + 1; VAL [f1_10=true, f1_2=false, f2_11=false, f2_3=false, temp_12=-1, temp_14=-1, x_0=-1, x_8=0, y_1=-1, y_9=0] [L90] 4 f2_11 := true; VAL [f1_10=true, f1_2=false, f2_11=true, f2_3=false, temp_12=-1, temp_14=-1, x_0=-1, x_8=0, y_1=-1, y_9=0] [L76] 3 assume f2_11; VAL [f1_10=true, f1_2=false, f2_11=true, f2_3=false, temp_12=-1, temp_14=-1, x_0=-1, x_8=0, y_1=-1, y_9=0] [L77] 3 temp_13 := y_9; VAL [f1_10=true, f1_2=false, f2_11=true, f2_3=false, temp_12=-1, temp_13=0, temp_14=-1, x_0=-1, x_8=0, y_1=-1, y_9=0] [L78] 3 y_9 := temp_13 + 1; VAL [f1_10=true, f1_2=false, f2_11=true, f2_3=false, temp_12=-1, temp_13=0, temp_14=-1, x_0=-1, x_8=0, y_1=-1, y_9=1] [L91] 4 assume f1_10; VAL [f1_10=true, f1_2=false, f2_11=true, f2_3=false, temp_12=-1, temp_13=0, temp_14=-1, x_0=-1, x_8=0, y_1=-1, y_9=1] [L79] 3 f1_10 := false; VAL [f1_10=false, f1_2=false, f2_11=true, f2_3=false, temp_12=-1, temp_13=0, temp_14=-1, x_0=-1, x_8=0, y_1=-1, y_9=1] [L92] 4 temp_15 := x_8; VAL [f1_10=false, f1_2=false, f2_11=true, f2_3=false, temp_12=-1, temp_13=0, temp_14=-1, temp_15=0, x_0=-1, x_8=0, y_1=-1, y_9=1] [L93] 4 x_8 := temp_15 + 1; VAL [f1_10=false, f1_2=false, f2_11=true, f2_3=false, temp_12=-1, temp_13=0, temp_14=-1, temp_15=0, x_0=-1, x_8=1, y_1=-1, y_9=1] [L94] 4 f2_11 := false; VAL [f1_10=false, f1_2=false, f2_11=false, f2_3=false, temp_12=-1, temp_13=0, temp_14=-1, temp_15=0, x_0=-1, x_8=1, y_1=-1, y_9=1] [L95] 4 assume !f1_10; VAL [f1_10=false, f1_2=false, f2_11=false, f2_3=false, temp_12=-1, temp_13=0, temp_14=-1, temp_15=0, x_0=-1, x_8=1, y_1=-1, y_9=1] [L80] 3 assume !f2_11; VAL [f1_10=false, f1_2=false, f2_11=false, f2_3=false, temp_12=-1, temp_13=0, temp_14=-1, temp_15=0, x_0=-1, x_8=1, y_1=-1, y_9=1] [L108] JOIN 3 join 5, 5, 5, 5, 5; VAL [f1_10=false, f1_2=false, f2_11=false, f2_3=false, temp_12=-1, temp_13=0, temp_14=-1, temp_15=0, x_0=-1, x_8=1, y_1=-1, y_9=1] [L109] JOIN 4 join 6, 6, 6, 6, 6, 6; VAL [f1_10=false, f1_2=false, f2_11=false, f2_3=false, temp_12=-1, temp_13=0, temp_14=-1, temp_15=0, x_0=-1, x_8=1, y_1=-1, y_9=1] [L63] FORK 1 fork 2, 2 thread2(); VAL [f1_10=false, f1_2=false, f2_11=false, f2_3=false, temp_12=-1, temp_13=0, temp_14=-1, temp_15=0, x_0=-1, x_8=1, y_1=-1, y_9=1] [L64] FORK 1 fork 3, 3, 3 thread3(); VAL [f1_10=false, f1_2=false, f2_11=false, f2_3=false, temp_12=-1, temp_13=0, temp_14=-1, temp_15=0, x_0=-1, x_8=1, y_1=-1, y_9=1] [L65] JOIN 5 join 2, 2; VAL [f1_10=false, f1_2=false, f2_11=false, f2_3=false, temp_12=-1, temp_13=0, temp_14=-1, temp_15=0, x_0=-1, x_8=1, y_1=-1, y_9=1] [L66] JOIN 6 join 3, 3, 3; VAL [f1_10=false, f1_2=false, f2_11=false, f2_3=false, temp_12=-1, temp_13=0, temp_14=-1, temp_15=0, x_0=-1, x_8=1, y_1=-1, y_9=1] [L118] JOIN 1 join 1; VAL [f1_10=false, f1_2=false, f2_11=false, f2_3=false, temp_12=-1, temp_13=0, temp_14=-1, temp_15=0, x_0=-1, x_8=1, y_1=-1, y_9=1] [L119] JOIN 2 join 4, 4, 4, 4; VAL [f1_10=false, f1_2=false, f2_11=false, f2_3=false, temp_12=-1, temp_13=0, temp_14=-1, temp_15=0, x_0=-1, x_8=1, y_1=-1, y_9=1] [L120] 0 assume !(x_0 == x_8 && y_1 == y_9); VAL [f1_10=false, f1_2=false, f2_11=false, f2_3=false, temp_12=-1, temp_13=0, temp_14=-1, temp_15=0, x_0=-1, x_8=1, y_1=-1, y_9=1] [L121] 0 assert false; VAL [f1_10=false, f1_2=false, f2_11=false, f2_3=false, temp_12=-1, temp_13=0, temp_14=-1, temp_15=0, x_0=-1, x_8=1, y_1=-1, y_9=1] - UnprovableResult [Line: 63]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 59]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 116]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 116]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 106]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 102]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 59]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 63]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 102]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 106]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 13 procedures, 120 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 4.6s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.3s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.5s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 206 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 206 mSDsluCounter, 542 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 251 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 261 IncrementalHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 367 mSDtfsCounter, 261 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11889occurred in iteration=2, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 1419 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 225 NumberOfCodeBlocks, 225 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 180 ConstructedInterpolants, 0 QuantifiedInterpolants, 350 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 6/6 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 proved your program to be incorrect! [2022-01-28 15:03:10,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...