/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/mcr/example_12.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-15 20:35:22,669 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-15 20:35:22,671 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-15 20:35:22,742 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-15 20:35:22,743 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-15 20:35:22,745 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-15 20:35:22,747 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-15 20:35:22,750 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-15 20:35:22,752 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-15 20:35:22,756 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-15 20:35:22,757 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-15 20:35:22,758 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-15 20:35:22,758 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-15 20:35:22,760 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-15 20:35:22,761 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-15 20:35:22,764 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-15 20:35:22,765 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-15 20:35:22,765 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-15 20:35:22,767 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-15 20:35:22,772 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-15 20:35:22,773 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-15 20:35:22,774 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-15 20:35:22,775 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-15 20:35:22,776 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-15 20:35:22,781 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-15 20:35:22,789 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-15 20:35:22,790 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-15 20:35:22,791 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-15 20:35:22,791 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 20:35:22,822 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-15 20:35:22,822 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-15 20:35:22,823 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-15 20:35:22,823 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-15 20:35:22,823 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-15 20:35:22,824 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-15 20:35:22,824 INFO L138 SettingsManager]: * Use SBE=true [2022-03-15 20:35:22,824 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-15 20:35:22,824 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-15 20:35:22,824 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-15 20:35:22,825 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-15 20:35:22,825 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-15 20:35:22,825 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-15 20:35:22,825 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-15 20:35:22,825 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-15 20:35:22,825 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-15 20:35:22,825 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-15 20:35:22,826 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-15 20:35:22,826 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-15 20:35:22,826 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-15 20:35:22,826 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-15 20:35:22,826 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-15 20:35:22,826 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-15 20:35:22,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 20:35:22,826 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-15 20:35:22,827 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-15 20:35:22,827 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-15 20:35:22,828 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-15 20:35:22,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-15 20:35:22,828 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2022-03-15 20:35:22,828 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2022-03-15 20:35:22,828 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-15 20:35:22,828 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-15 20:35:23,070 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-15 20:35:23,095 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-15 20:35:23,097 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-15 20:35:23,098 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-15 20:35:23,099 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-15 20:35:23,100 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_12.bpl [2022-03-15 20:35:23,100 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_12.bpl' [2022-03-15 20:35:23,117 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-15 20:35:23,118 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-15 20:35:23,119 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-15 20:35:23,119 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-15 20:35:23,119 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-15 20:35:23,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:35:23" (1/1) ... [2022-03-15 20:35:23,135 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:35:23" (1/1) ... [2022-03-15 20:35:23,139 INFO L137 Inliner]: procedures = 13, calls = 12, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-15 20:35:23,140 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-15 20:35:23,144 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-15 20:35:23,144 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-15 20:35:23,144 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-15 20:35:23,150 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:35:23" (1/1) ... [2022-03-15 20:35:23,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:35:23" (1/1) ... [2022-03-15 20:35:23,152 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:35:23" (1/1) ... [2022-03-15 20:35:23,152 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:35:23" (1/1) ... [2022-03-15 20:35:23,157 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:35:23" (1/1) ... [2022-03-15 20:35:23,158 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:35:23" (1/1) ... [2022-03-15 20:35:23,159 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:35:23" (1/1) ... [2022-03-15 20:35:23,161 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-15 20:35:23,163 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-15 20:35:23,163 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-15 20:35:23,163 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-15 20:35:23,164 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:35:23" (1/1) ... [2022-03-15 20:35:23,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 20:35:23,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 20:35:23,197 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 20:35:23,211 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 20:35:23,238 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2022-03-15 20:35:23,239 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2022-03-15 20:35:23,239 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2022-03-15 20:35:23,239 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2022-03-15 20:35:23,239 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2022-03-15 20:35:23,239 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2022-03-15 20:35:23,239 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2022-03-15 20:35:23,239 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2022-03-15 20:35:23,239 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2022-03-15 20:35:23,240 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2022-03-15 20:35:23,240 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2022-03-15 20:35:23,240 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2022-03-15 20:35:23,240 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2022-03-15 20:35:23,240 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2022-03-15 20:35:23,240 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2022-03-15 20:35:23,240 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_9 given in one single declaration [2022-03-15 20:35:23,240 INFO L130 BoogieDeclarations]: Found specification of procedure set_9 [2022-03-15 20:35:23,240 INFO L138 BoogieDeclarations]: Found implementation of procedure set_9 [2022-03-15 20:35:23,240 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-03-15 20:35:23,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-15 20:35:23,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-15 20:35:23,241 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2022-03-15 20:35:23,241 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2022-03-15 20:35:23,241 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2022-03-15 20:35:23,241 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2022-03-15 20:35:23,241 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2022-03-15 20:35:23,241 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2022-03-15 20:35:23,241 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_10 given in one single declaration [2022-03-15 20:35:23,241 INFO L130 BoogieDeclarations]: Found specification of procedure set_10 [2022-03-15 20:35:23,242 INFO L138 BoogieDeclarations]: Found implementation of procedure set_10 [2022-03-15 20:35:23,242 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_7 given in one single declaration [2022-03-15 20:35:23,242 INFO L130 BoogieDeclarations]: Found specification of procedure set_7 [2022-03-15 20:35:23,242 INFO L138 BoogieDeclarations]: Found implementation of procedure set_7 [2022-03-15 20:35:23,242 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_11 given in one single declaration [2022-03-15 20:35:23,242 INFO L130 BoogieDeclarations]: Found specification of procedure set_11 [2022-03-15 20:35:23,242 INFO L138 BoogieDeclarations]: Found implementation of procedure set_11 [2022-03-15 20:35:23,242 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_8 given in one single declaration [2022-03-15 20:35:23,242 INFO L130 BoogieDeclarations]: Found specification of procedure set_8 [2022-03-15 20:35:23,243 INFO L138 BoogieDeclarations]: Found implementation of procedure set_8 [2022-03-15 20:35:23,243 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 20:35:23,280 INFO L234 CfgBuilder]: Building ICFG [2022-03-15 20:35:23,282 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-15 20:35:23,375 INFO L275 CfgBuilder]: Performing block encoding [2022-03-15 20:35:23,383 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-15 20:35:23,384 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-15 20:35:23,401 INFO L202 PluginConnector]: Adding new model example_12.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 08:35:23 BoogieIcfgContainer [2022-03-15 20:35:23,401 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-15 20:35:23,402 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-15 20:35:23,402 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-15 20:35:23,417 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-15 20:35:23,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:35:23" (1/2) ... [2022-03-15 20:35:23,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e1df793 and model type example_12.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 08:35:23, skipping insertion in model container [2022-03-15 20:35:23,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_12.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 08:35:23" (2/2) ... [2022-03-15 20:35:23,420 INFO L111 eAbstractionObserver]: Analyzing ICFG example_12.bpl [2022-03-15 20:35:23,423 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-15 20:35:23,423 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-15 20:35:23,423 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-15 20:35:23,424 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-15 20:35:23,522 INFO L148 ThreadInstanceAdder]: Constructed 144 joinOtherThreadTransitions. [2022-03-15 20:35:23,559 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 20:35:23,564 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 20:35:23,565 INFO L340 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-03-15 20:35:23,578 INFO L126 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-03-15 20:35:23,586 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 100 places, 195 transitions, 882 flow [2022-03-15 20:35:23,588 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 100 places, 195 transitions, 882 flow [2022-03-15 20:35:23,589 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 100 places, 195 transitions, 882 flow [2022-03-15 20:35:26,090 INFO L129 PetriNetUnfolder]: 20481/24615 cut-off events. [2022-03-15 20:35:26,090 INFO L130 PetriNetUnfolder]: For 24576/24576 co-relation queries the response was YES. [2022-03-15 20:35:26,207 INFO L84 FinitePrefix]: Finished finitePrefix Result has 49228 conditions, 24615 events. 20481/24615 cut-off events. For 24576/24576 co-relation queries the response was YES. Maximal size of possible extension queue 988. Compared 101380 event pairs, 0 based on Foata normal form. 0/24614 useless extension candidates. Maximal degree in co-relation 22585. Up to 5544 conditions per place. [2022-03-15 20:35:26,507 INFO L116 LiptonReduction]: Number of co-enabled transitions 6600 [2022-03-15 20:35:26,679 INFO L131 LiptonReduction]: Checked pairs total: 30474 [2022-03-15 20:35:26,680 INFO L133 LiptonReduction]: Total number of compositions: 13 [2022-03-15 20:35:26,686 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 87 places, 182 transitions, 856 flow [2022-03-15 20:36:12,136 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 535537 states, 535536 states have (on average 7.984719981476502) internal successors, (4276105), 535536 states have internal predecessors, (4276105), 0 states have call successors, (0), 0 states 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 20:36:13,304 INFO L276 IsEmpty]: Start isEmpty. Operand has 535537 states, 535536 states have (on average 7.984719981476502) internal successors, (4276105), 535536 states have internal predecessors, (4276105), 0 states have call successors, (0), 0 states 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 20:36:21,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-03-15 20:36:21,523 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 20:36:21,524 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] [2022-03-15 20:36:21,526 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 9 more)] === [2022-03-15 20:36:21,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 20:36:21,538 INFO L85 PathProgramCache]: Analyzing trace with hash -787226445, now seen corresponding path program 1 times [2022-03-15 20:36:21,559 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 20:36:21,560 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680060121] [2022-03-15 20:36:21,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 20:36:21,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 20:36:21,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 20:36:21,853 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 20:36:21,853 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 20:36:21,854 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680060121] [2022-03-15 20:36:21,854 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680060121] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 20:36:21,855 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 20:36:21,855 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 20:36:21,856 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1996567903] [2022-03-15 20:36:21,857 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 20:36:21,866 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 20:36:25,982 INFO L252 McrAutomatonBuilder]: Finished intersection with 12287 states and 73729 transitions. [2022-03-15 20:36:25,983 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 20:37:27,713 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [1071180#(not (= 0 set_3Thread1of1ForFork11_thidvar0))] [2022-03-15 20:37:27,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-15 20:37:27,715 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 20:37:27,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-15 20:37:27,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-15 20:37:29,309 INFO L87 Difference]: Start difference. First operand has 535537 states, 535536 states have (on average 7.984719981476502) internal successors, (4276105), 535536 states have internal predecessors, (4276105), 0 states have call successors, (0), 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 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)