/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/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.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-wip.dk.mcr-reduction-c7b2d19 [2022-03-15 21:15:11,620 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-15 21:15:11,622 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-15 21:15:11,684 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-15 21:15:11,684 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-15 21:15:11,686 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-15 21:15:11,688 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-15 21:15:11,690 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-15 21:15:11,692 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-15 21:15:11,695 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-15 21:15:11,696 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-15 21:15:11,697 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2022-03-15 21:15:11,722 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-15 21:15:11,723 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-15 21:15:11,723 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-15 21:15:11,724 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2022-03-15 21:15:11,746 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-15 21:15:11,746 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-15 21:15:11,747 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-15 21:15:11,747 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-15 21:15:11,748 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-15 21:15:11,748 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-15 21:15:11,748 INFO L138 SettingsManager]: * Use SBE=true [2022-03-15 21:15:11,748 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-15 21:15:11,748 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-15 21:15:11,748 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-15 21:15:11,749 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-15 21:15:11,749 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-15 21:15:11,749 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-15 21:15:11,749 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-15 21:15:11,750 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-15 21:15:11,750 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-15 21:15:11,750 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-15 21:15:11,750 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-15 21:15:11,750 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-15 21:15:11,750 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-15 21:15:11,750 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-15 21:15:11,750 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-15 21:15:11,750 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-15 21:15:11,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 21:15:11,751 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-15 21:15:11,751 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-15 21:15:11,751 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-15 21:15:11,751 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-15 21:15:11,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-15 21:15:11,751 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2022-03-15 21:15:11,751 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2022-03-15 21:15:11,752 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-15 21:15:11,752 INFO L138 SettingsManager]: * Interpolant automaton=MCR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-15 21:15:11,941 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-15 21:15:11,957 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-15 21:15:11,958 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-15 21:15:11,959 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-15 21:15:11,960 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-15 21:15:11,961 INFO L432 ainManager$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 [2022-03-15 21:15:11,961 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/barrier-loop.wvr.bpl' [2022-03-15 21:15:11,988 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-15 21:15:11,989 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-15 21:15:11,990 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-15 21:15:11,990 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-15 21:15:11,990 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-15 21:15:11,998 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 15.03 09:15:11" (1/1) ... [2022-03-15 21:15:12,003 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 15.03 09:15:11" (1/1) ... [2022-03-15 21:15:12,007 INFO L137 Inliner]: procedures = 7, calls = 6, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-15 21:15:12,008 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-15 21:15:12,009 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-15 21:15:12,009 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-15 21:15:12,009 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-15 21:15:12,014 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:15:11" (1/1) ... [2022-03-15 21:15:12,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:15:11" (1/1) ... [2022-03-15 21:15:12,015 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:15:11" (1/1) ... [2022-03-15 21:15:12,015 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:15:11" (1/1) ... [2022-03-15 21:15:12,017 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:15:11" (1/1) ... [2022-03-15 21:15:12,019 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:15:11" (1/1) ... [2022-03-15 21:15:12,019 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:15:11" (1/1) ... [2022-03-15 21:15:12,020 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-15 21:15:12,021 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-15 21:15:12,021 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-15 21:15:12,021 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-15 21:15:12,022 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:15:11" (1/1) ... [2022-03-15 21:15:12,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 21:15:12,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:15:12,055 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-15 21:15:12,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-15 21:15:12,098 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-03-15 21:15:12,098 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-15 21:15:12,098 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-15 21:15:12,099 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-03-15 21:15:12,099 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-15 21:15:12,099 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-15 21:15:12,099 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-03-15 21:15:12,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-15 21:15:12,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-15 21:15:12,099 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2022-03-15 21:15:12,100 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-03-15 21:15:12,100 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-03-15 21:15:12,101 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2022-03-15 21:15:12,101 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-03-15 21:15:12,101 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-03-15 21:15:12,101 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2022-03-15 21:15:12,101 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-03-15 21:15:12,101 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-03-15 21:15:12,102 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2022-03-15 21:15:12,102 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-03-15 21:15:12,102 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-03-15 21:15:12,102 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-15 21:15:12,137 INFO L234 CfgBuilder]: Building ICFG [2022-03-15 21:15:12,138 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-15 21:15:12,253 INFO L275 CfgBuilder]: Performing block encoding [2022-03-15 21:15:12,262 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-15 21:15:12,262 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-03-15 21:15:12,264 INFO L202 PluginConnector]: Adding new model barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 09:15:12 BoogieIcfgContainer [2022-03-15 21:15:12,264 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-15 21:15:12,265 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-15 21:15:12,265 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-15 21:15:12,267 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-15 21:15:12,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:15:11" (1/2) ... [2022-03-15 21:15:12,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25e9f88c and model type barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 09:15:12, skipping insertion in model container [2022-03-15 21:15:12,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 09:15:12" (2/2) ... [2022-03-15 21:15:12,281 INFO L111 eAbstractionObserver]: Analyzing ICFG barrier-loop.wvr.bpl [2022-03-15 21:15:12,284 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-15 21:15:12,284 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-15 21:15:12,284 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-15 21:15:12,284 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-15 21:15:12,369 INFO L148 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2022-03-15 21:15:12,407 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 21:15:12,412 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=MCR, 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=true, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-15 21:15:12,412 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-03-15 21:15:12,420 INFO L126 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-03-15 21:15:12,440 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 73 transitions, 218 flow [2022-03-15 21:15:12,442 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 73 transitions, 218 flow [2022-03-15 21:15:12,443 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 84 places, 73 transitions, 218 flow [2022-03-15 21:15:12,470 INFO L129 PetriNetUnfolder]: 8/61 cut-off events. [2022-03-15 21:15:12,470 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-03-15 21:15:12,474 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 61 events. 8/61 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 188 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 71. Up to 3 conditions per place. [2022-03-15 21:15:12,477 INFO L116 LiptonReduction]: Number of co-enabled transitions 1888 [2022-03-15 21:15:12,539 INFO L131 LiptonReduction]: Checked pairs total: 8304 [2022-03-15 21:15:12,539 INFO L133 LiptonReduction]: Total number of compositions: 3 [2022-03-15 21:15:12,558 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 82 places, 71 transitions, 214 flow [2022-03-15 21:15:13,115 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 10819 states, 10818 states have (on average 4.095581438343501) internal successors, (44306), 10818 states have internal predecessors, (44306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:15:13,147 INFO L276 IsEmpty]: Start isEmpty. Operand has 10819 states, 10818 states have (on average 4.095581438343501) internal successors, (44306), 10818 states have internal predecessors, (44306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:15:13,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-03-15 21:15:13,191 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:15:13,192 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:15:13,192 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8INUSE_VIOLATION (and 7 more)] === [2022-03-15 21:15:13,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:15:13,196 INFO L85 PathProgramCache]: Analyzing trace with hash -2061645579, now seen corresponding path program 1 times [2022-03-15 21:15:13,259 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:15:13,261 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388767660] [2022-03-15 21:15:13,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:15:13,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:15:13,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:15:13,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:15:13,456 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:15:13,456 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388767660] [2022-03-15 21:15:13,457 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388767660] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 21:15:13,457 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 21:15:13,457 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-03-15 21:15:13,458 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1777937185] [2022-03-15 21:15:13,458 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:15:13,462 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:15:13,518 INFO L252 McrAutomatonBuilder]: Finished intersection with 172 states and 392 transitions. [2022-03-15 21:15:13,518 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:15:15,098 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 21:15:15,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-15 21:15:15,099 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:15:15,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-15 21:15:15,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 21:15:15,133 INFO L87 Difference]: Start difference. First operand has 10819 states, 10818 states have (on average 4.095581438343501) internal successors, (44306), 10818 states have internal predecessors, (44306), 0 states have call successors, (0), 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, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:15:15,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:15:15,283 INFO L93 Difference]: Finished difference Result 11213 states and 45853 transitions. [2022-03-15 21:15:15,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 21:15:15,285 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-03-15 21:15:15,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:15:15,361 INFO L225 Difference]: With dead ends: 11213 [2022-03-15 21:15:15,361 INFO L226 Difference]: Without dead ends: 11192 [2022-03-15 21:15:15,362 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 21:15:15,364 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 8 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 21:15:15,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 57 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 21:15:15,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11192 states. [2022-03-15 21:15:15,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11192 to 10961. [2022-03-15 21:15:15,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10961 states, 10960 states have (on average 4.091240875912408) internal successors, (44840), 10960 states have internal predecessors, (44840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:15:15,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10961 states to 10961 states and 44840 transitions. [2022-03-15 21:15:15,804 INFO L78 Accepts]: Start accepts. Automaton has 10961 states and 44840 transitions. Word has length 22 [2022-03-15 21:15:15,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:15:15,805 INFO L470 AbstractCegarLoop]: Abstraction has 10961 states and 44840 transitions. [2022-03-15 21:15:15,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:15:15,806 INFO L276 IsEmpty]: Start isEmpty. Operand 10961 states and 44840 transitions. [2022-03-15 21:15:15,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-03-15 21:15:15,835 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:15:15,835 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:15:15,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-15 21:15:15,836 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8INUSE_VIOLATION (and 7 more)] === [2022-03-15 21:15:15,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:15:15,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1730277006, now seen corresponding path program 1 times [2022-03-15 21:15:15,837 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:15:15,837 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964256868] [2022-03-15 21:15:15,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:15:15,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:15:15,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:15:15,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:15:15,856 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:15:15,856 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964256868] [2022-03-15 21:15:15,856 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964256868] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 21:15:15,856 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 21:15:15,856 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 21:15:15,857 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2146038115] [2022-03-15 21:15:15,857 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:15:15,860 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:15:15,976 INFO L252 McrAutomatonBuilder]: Finished intersection with 484 states and 1272 transitions. [2022-03-15 21:15:15,977 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:15:17,426 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [54866#f2_11] [2022-03-15 21:15:17,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-15 21:15:17,427 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:15:17,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-15 21:15:17,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-15 21:15:17,427 INFO L87 Difference]: Start difference. First operand 10961 states and 44840 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:15:17,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:15:17,599 INFO L93 Difference]: Finished difference Result 10541 states and 42104 transitions. [2022-03-15 21:15:17,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-15 21:15:17,600 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-03-15 21:15:17,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:15:17,643 INFO L225 Difference]: With dead ends: 10541 [2022-03-15 21:15:17,643 INFO L226 Difference]: Without dead ends: 10224 [2022-03-15 21:15:17,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 454 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-15 21:15:17,644 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 69 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 21:15:17,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 182 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 21:15:17,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10224 states. [2022-03-15 21:15:17,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10224 to 10224. [2022-03-15 21:15:17,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10224 states, 10223 states have (on average 3.99237014574978) internal successors, (40814), 10223 states have internal predecessors, (40814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:15:17,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10224 states to 10224 states and 40814 transitions. [2022-03-15 21:15:17,982 INFO L78 Accepts]: Start accepts. Automaton has 10224 states and 40814 transitions. Word has length 30 [2022-03-15 21:15:17,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:15:17,982 INFO L470 AbstractCegarLoop]: Abstraction has 10224 states and 40814 transitions. [2022-03-15 21:15:17,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:15:17,983 INFO L276 IsEmpty]: Start isEmpty. Operand 10224 states and 40814 transitions. [2022-03-15 21:15:18,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-03-15 21:15:18,005 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:15:18,005 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:15:18,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-15 21:15:18,006 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8INUSE_VIOLATION (and 7 more)] === [2022-03-15 21:15:18,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:15:18,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1042163984, now seen corresponding path program 1 times [2022-03-15 21:15:18,007 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:15:18,007 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24300549] [2022-03-15 21:15:18,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:15:18,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:15:18,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:15:18,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:15:18,040 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:15:18,040 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24300549] [2022-03-15 21:15:18,040 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24300549] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 21:15:18,040 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 21:15:18,040 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 21:15:18,041 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [393406386] [2022-03-15 21:15:18,041 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:15:18,043 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:15:18,178 INFO L252 McrAutomatonBuilder]: Finished intersection with 484 states and 1272 transitions. [2022-03-15 21:15:18,178 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:15:19,314 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [85859#f1_10] [2022-03-15 21:15:19,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-15 21:15:19,316 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:15:19,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-15 21:15:19,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-15 21:15:19,316 INFO L87 Difference]: Start difference. First operand 10224 states and 40814 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:15:19,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:15:19,399 INFO L93 Difference]: Finished difference Result 7416 states and 28095 transitions. [2022-03-15 21:15:19,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-15 21:15:19,400 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-03-15 21:15:19,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:15:19,422 INFO L225 Difference]: With dead ends: 7416 [2022-03-15 21:15:19,422 INFO L226 Difference]: Without dead ends: 6569 [2022-03-15 21:15:19,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 454 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-15 21:15:19,425 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 67 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 21:15:19,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 180 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 21:15:19,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6569 states. [2022-03-15 21:15:19,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6569 to 6569. [2022-03-15 21:15:19,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6569 states, 6568 states have (on average 3.7053897685749084) internal successors, (24337), 6568 states have internal predecessors, (24337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:15:19,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6569 states to 6569 states and 24337 transitions. [2022-03-15 21:15:19,576 INFO L78 Accepts]: Start accepts. Automaton has 6569 states and 24337 transitions. Word has length 30 [2022-03-15 21:15:19,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:15:19,577 INFO L470 AbstractCegarLoop]: Abstraction has 6569 states and 24337 transitions. [2022-03-15 21:15:19,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:15:19,577 INFO L276 IsEmpty]: Start isEmpty. Operand 6569 states and 24337 transitions. [2022-03-15 21:15:19,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-03-15 21:15:19,589 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:15:19,589 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:15:19,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-15 21:15:19,590 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8INUSE_VIOLATION (and 7 more)] === [2022-03-15 21:15:19,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:15:19,591 INFO L85 PathProgramCache]: Analyzing trace with hash 594966682, now seen corresponding path program 1 times [2022-03-15 21:15:19,592 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:15:19,592 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144154228] [2022-03-15 21:15:19,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:15:19,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:15:19,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:15:19,624 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:15:19,625 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:15:19,625 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144154228] [2022-03-15 21:15:19,627 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144154228] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 21:15:19,627 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 21:15:19,627 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 21:15:19,627 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1065211661] [2022-03-15 21:15:19,627 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:15:19,629 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:15:19,747 INFO L252 McrAutomatonBuilder]: Finished intersection with 484 states and 1272 transitions. [2022-03-15 21:15:19,747 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:15:21,335 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 21:15:21,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-15 21:15:21,336 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:15:21,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-15 21:15:21,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 21:15:21,337 INFO L87 Difference]: Start difference. First operand 6569 states and 24337 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:15:21,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:15:21,401 INFO L93 Difference]: Finished difference Result 7809 states and 28257 transitions. [2022-03-15 21:15:21,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 21:15:21,402 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 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 30 [2022-03-15 21:15:21,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:15:21,425 INFO L225 Difference]: With dead ends: 7809 [2022-03-15 21:15:21,425 INFO L226 Difference]: Without dead ends: 7413 [2022-03-15 21:15:21,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 21:15:21,428 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 35 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 95 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 [2022-03-15 21:15:21,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 95 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 21:15:21,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7413 states. [2022-03-15 21:15:21,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7413 to 7165. [2022-03-15 21:15:21,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7165 states, 7164 states have (on average 3.6210217755443885) internal successors, (25941), 7164 states have internal predecessors, (25941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:15:21,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7165 states to 7165 states and 25941 transitions. [2022-03-15 21:15:21,584 INFO L78 Accepts]: Start accepts. Automaton has 7165 states and 25941 transitions. Word has length 30 [2022-03-15 21:15:21,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:15:21,584 INFO L470 AbstractCegarLoop]: Abstraction has 7165 states and 25941 transitions. [2022-03-15 21:15:21,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:15:21,584 INFO L276 IsEmpty]: Start isEmpty. Operand 7165 states and 25941 transitions. [2022-03-15 21:15:21,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-03-15 21:15:21,596 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:15:21,597 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:15:21,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-15 21:15:21,597 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8INUSE_VIOLATION (and 7 more)] === [2022-03-15 21:15:21,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:15:21,600 INFO L85 PathProgramCache]: Analyzing trace with hash -120787792, now seen corresponding path program 1 times [2022-03-15 21:15:21,601 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:15:21,601 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320759121] [2022-03-15 21:15:21,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:15:21,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:15:21,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:15:21,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:15:21,641 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:15:21,641 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320759121] [2022-03-15 21:15:21,641 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320759121] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 21:15:21,641 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 21:15:21,641 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 21:15:21,641 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [7232299] [2022-03-15 21:15:21,641 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:15:21,644 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:15:21,679 INFO L252 McrAutomatonBuilder]: Finished intersection with 484 states and 1272 transitions. [2022-03-15 21:15:21,680 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:15:23,336 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 21:15:23,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-15 21:15:23,336 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:15:23,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-15 21:15:23,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 21:15:23,337 INFO L87 Difference]: Start difference. First operand 7165 states and 25941 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:15:23,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:15:23,410 INFO L93 Difference]: Finished difference Result 6783 states and 23367 transitions. [2022-03-15 21:15:23,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 21:15:23,411 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 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 30 [2022-03-15 21:15:23,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:15:23,425 INFO L225 Difference]: With dead ends: 6783 [2022-03-15 21:15:23,426 INFO L226 Difference]: Without dead ends: 5597 [2022-03-15 21:15:23,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 21:15:23,426 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 36 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 94 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 [2022-03-15 21:15:23,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 94 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 21:15:23,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5597 states. [2022-03-15 21:15:23,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5597 to 5597. [2022-03-15 21:15:23,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5597 states, 5596 states have (on average 3.454074338813438) internal successors, (19329), 5596 states have internal predecessors, (19329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:15:23,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5597 states to 5597 states and 19329 transitions. [2022-03-15 21:15:23,524 INFO L78 Accepts]: Start accepts. Automaton has 5597 states and 19329 transitions. Word has length 30 [2022-03-15 21:15:23,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:15:23,525 INFO L470 AbstractCegarLoop]: Abstraction has 5597 states and 19329 transitions. [2022-03-15 21:15:23,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:15:23,525 INFO L276 IsEmpty]: Start isEmpty. Operand 5597 states and 19329 transitions. [2022-03-15 21:15:23,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-03-15 21:15:23,537 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:15:23,537 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] [2022-03-15 21:15:23,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-15 21:15:23,537 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8INUSE_VIOLATION (and 7 more)] === [2022-03-15 21:15:23,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:15:23,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1831375109, now seen corresponding path program 1 times [2022-03-15 21:15:23,539 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:15:23,539 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755304093] [2022-03-15 21:15:23,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:15:23,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:15:23,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-15 21:15:23,568 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-15 21:15:23,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-15 21:15:23,599 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-15 21:15:23,599 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-03-15 21:15:23,600 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (10 of 11 remaining) [2022-03-15 21:15:23,604 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0INUSE_VIOLATION (9 of 11 remaining) [2022-03-15 21:15:23,615 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err7INUSE_VIOLATION (8 of 11 remaining) [2022-03-15 21:15:23,616 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8INUSE_VIOLATION (7 of 11 remaining) [2022-03-15 21:15:23,616 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9INUSE_VIOLATION (6 of 11 remaining) [2022-03-15 21:15:23,616 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread4Err3INUSE_VIOLATION (5 of 11 remaining) [2022-03-15 21:15:23,616 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread4Err5INUSE_VIOLATION (4 of 11 remaining) [2022-03-15 21:15:23,616 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Thread1of1ForFork2Err1INUSE_VIOLATION (3 of 11 remaining) [2022-03-15 21:15:23,616 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Thread1of1ForFork2Err2INUSE_VIOLATION (2 of 11 remaining) [2022-03-15 21:15:23,616 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread4Thread1of1ForFork3Err4INUSE_VIOLATION (1 of 11 remaining) [2022-03-15 21:15:23,617 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread4Thread1of1ForFork3Err6INUSE_VIOLATION (0 of 11 remaining) [2022-03-15 21:15:23,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-15 21:15:23,619 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-03-15 21:15:23,622 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-15 21:15:23,622 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-15 21:15:23,639 INFO L202 PluginConnector]: Adding new model barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.03 09:15:23 BasicIcfg [2022-03-15 21:15:23,639 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-15 21:15:23,640 INFO L158 Benchmark]: Toolchain (without parser) took 11650.35ms. Allocated memory was 187.7MB in the beginning and 1.6GB in the end (delta: 1.5GB). Free memory was 155.9MB in the beginning and 1.0GB in the end (delta: -882.5MB). Peak memory consumption was 574.1MB. Max. memory is 8.0GB. [2022-03-15 21:15:23,640 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.10ms. Allocated memory is still 187.7MB. Free memory is still 157.1MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-15 21:15:23,640 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.62ms. Allocated memory is still 187.7MB. Free memory was 155.7MB in the beginning and 154.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-15 21:15:23,640 INFO L158 Benchmark]: Boogie Preprocessor took 10.95ms. Allocated memory is still 187.7MB. Free memory was 154.2MB in the beginning and 153.2MB in the end (delta: 993.7kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-15 21:15:23,640 INFO L158 Benchmark]: RCFGBuilder took 243.19ms. Allocated memory is still 187.7MB. Free memory was 153.2MB in the beginning and 142.9MB in the end (delta: 10.4MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-03-15 21:15:23,641 INFO L158 Benchmark]: TraceAbstraction took 11374.33ms. Allocated memory was 187.7MB in the beginning and 1.6GB in the end (delta: 1.5GB). Free memory was 142.4MB in the beginning and 1.0GB in the end (delta: -896.0MB). Peak memory consumption was 561.5MB. Max. memory is 8.0GB. [2022-03-15 21:15:23,641 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.10ms. Allocated memory is still 187.7MB. Free memory is still 157.1MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 18.62ms. Allocated memory is still 187.7MB. Free memory was 155.7MB in the beginning and 154.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 10.95ms. Allocated memory is still 187.7MB. Free memory was 154.2MB in the beginning and 153.2MB in the end (delta: 993.7kB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 243.19ms. Allocated memory is still 187.7MB. Free memory was 153.2MB in the beginning and 142.9MB in the end (delta: 10.4MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 11374.33ms. Allocated memory was 187.7MB in the beginning and 1.6GB in the end (delta: 1.5GB). Free memory was 142.4MB in the beginning and 1.0GB in the end (delta: -896.0MB). Peak memory consumption was 561.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.1s, 84 PlacesBefore, 82 PlacesAfterwards, 73 TransitionsBefore, 71 TransitionsAfterwards, 1888 CoEnabledTransitionPairs, 2 FixpointIterations, 3 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 8304 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5295, positive: 5127, positive conditional: 0, positive unconditional: 5127, negative: 168, negative conditional: 0, negative unconditional: 168, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 765, positive: 745, positive conditional: 0, positive unconditional: 745, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5295, positive: 4382, positive conditional: 0, positive unconditional: 4382, negative: 148, negative conditional: 0, negative unconditional: 148, unknown: 765, unknown conditional: 0, unknown unconditional: 765] , Statistics on independence cache: Total cache size (in pairs): 765, Positive cache size: 745, Positive conditional cache size: 0, Positive unconditional cache size: 745, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20 - 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); [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: 11.2s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.2s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.7s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 215 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 215 mSDsluCounter, 608 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 407 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 314 IncrementalHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 328 mSDtfsCounter, 314 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1974 GetRequests, 1967 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10961occurred in iteration=1, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 479 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 180 NumberOfCodeBlocks, 180 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 137 ConstructedInterpolants, 0 QuantifiedInterpolants, 307 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 4/4 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! [2022-03-15 21:15:23,667 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...