/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/stateful01-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 11:13:09,415 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 11:13:09,501 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-24 11:13:09,506 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 11:13:09,507 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 11:13:09,538 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 11:13:09,539 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 11:13:09,539 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 11:13:09,540 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 11:13:09,543 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 11:13:09,543 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 11:13:09,544 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 11:13:09,544 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 11:13:09,545 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 11:13:09,545 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 11:13:09,545 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 11:13:09,545 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 11:13:09,546 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 11:13:09,546 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 11:13:09,546 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 11:13:09,546 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 11:13:09,547 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 11:13:09,547 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 11:13:09,548 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 11:13:09,548 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 11:13:09,548 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 11:13:09,548 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 11:13:09,548 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 11:13:09,549 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 11:13:09,549 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 11:13:09,550 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 11:13:09,550 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 11:13:09,550 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 11:13:09,550 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 11:13:09,550 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 11:13:09,551 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-24 11:13:09,869 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 11:13:09,891 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 11:13:09,893 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 11:13:09,894 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 11:13:09,896 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 11:13:09,898 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stateful01-2.i [2023-08-24 11:13:11,085 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 11:13:11,385 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 11:13:11,385 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stateful01-2.i [2023-08-24 11:13:11,407 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c6b99fa5/a985f135df554bffa1f09e8f8161f5fd/FLAGfbad6a605 [2023-08-24 11:13:11,417 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c6b99fa5/a985f135df554bffa1f09e8f8161f5fd [2023-08-24 11:13:11,419 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 11:13:11,420 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 11:13:11,421 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 11:13:11,421 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 11:13:11,423 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 11:13:11,424 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 11:13:11" (1/1) ... [2023-08-24 11:13:11,425 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35041d0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:13:11, skipping insertion in model container [2023-08-24 11:13:11,425 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 11:13:11" (1/1) ... [2023-08-24 11:13:11,478 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 11:13:11,726 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stateful01-2.i[30826,30839] [2023-08-24 11:13:11,728 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 11:13:11,742 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 11:13:11,775 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [257] [2023-08-24 11:13:11,783 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [257] [2023-08-24 11:13:11,804 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stateful01-2.i[30826,30839] [2023-08-24 11:13:11,805 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 11:13:11,845 INFO L206 MainTranslator]: Completed translation [2023-08-24 11:13:11,845 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:13:11 WrapperNode [2023-08-24 11:13:11,846 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 11:13:11,847 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 11:13:11,847 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 11:13:11,847 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 11:13:11,853 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:13:11" (1/1) ... [2023-08-24 11:13:11,881 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:13:11" (1/1) ... [2023-08-24 11:13:11,906 INFO L138 Inliner]: procedures = 168, calls = 34, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 63 [2023-08-24 11:13:11,907 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 11:13:11,909 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 11:13:11,909 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 11:13:11,909 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 11:13:11,916 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:13:11" (1/1) ... [2023-08-24 11:13:11,916 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:13:11" (1/1) ... [2023-08-24 11:13:11,929 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:13:11" (1/1) ... [2023-08-24 11:13:11,930 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:13:11" (1/1) ... [2023-08-24 11:13:11,938 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:13:11" (1/1) ... [2023-08-24 11:13:11,940 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:13:11" (1/1) ... [2023-08-24 11:13:11,942 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:13:11" (1/1) ... [2023-08-24 11:13:11,943 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:13:11" (1/1) ... [2023-08-24 11:13:11,945 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 11:13:11,946 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 11:13:11,946 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 11:13:11,946 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 11:13:11,947 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:13:11" (1/1) ... [2023-08-24 11:13:11,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 11:13:11,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 11:13:11,980 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) [2023-08-24 11:13:11,983 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 [2023-08-24 11:13:12,014 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 11:13:12,014 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-24 11:13:12,014 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-24 11:13:12,014 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-24 11:13:12,014 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-24 11:13:12,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 11:13:12,015 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-24 11:13:12,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 11:13:12,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 11:13:12,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 11:13:12,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 11:13:12,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 11:13:12,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 11:13:12,017 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 11:13:12,133 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 11:13:12,134 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 11:13:12,353 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 11:13:12,359 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 11:13:12,359 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-24 11:13:12,361 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 11:13:12 BoogieIcfgContainer [2023-08-24 11:13:12,361 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 11:13:12,363 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 11:13:12,363 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 11:13:12,366 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 11:13:12,367 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 11:13:11" (1/3) ... [2023-08-24 11:13:12,367 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f0f9735 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 11:13:12, skipping insertion in model container [2023-08-24 11:13:12,367 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:13:11" (2/3) ... [2023-08-24 11:13:12,368 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f0f9735 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 11:13:12, skipping insertion in model container [2023-08-24 11:13:12,368 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 11:13:12" (3/3) ... [2023-08-24 11:13:12,369 INFO L112 eAbstractionObserver]: Analyzing ICFG stateful01-2.i [2023-08-24 11:13:12,386 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 11:13:12,386 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 11:13:12,386 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 11:13:12,475 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-24 11:13:12,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 89 transitions, 194 flow [2023-08-24 11:13:12,602 INFO L124 PetriNetUnfolderBase]: 1/87 cut-off events. [2023-08-24 11:13:12,602 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 11:13:12,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 87 events. 1/87 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2023-08-24 11:13:12,608 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 89 transitions, 194 flow [2023-08-24 11:13:12,613 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 77 transitions, 166 flow [2023-08-24 11:13:12,617 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 11:13:12,635 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 77 transitions, 166 flow [2023-08-24 11:13:12,637 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 77 transitions, 166 flow [2023-08-24 11:13:12,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 77 transitions, 166 flow [2023-08-24 11:13:12,672 INFO L124 PetriNetUnfolderBase]: 0/77 cut-off events. [2023-08-24 11:13:12,673 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 11:13:12,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 77 events. 0/77 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-08-24 11:13:12,674 INFO L119 LiptonReduction]: Number of co-enabled transitions 732 [2023-08-24 11:13:15,746 INFO L134 LiptonReduction]: Checked pairs total: 2433 [2023-08-24 11:13:15,746 INFO L136 LiptonReduction]: Total number of compositions: 54 [2023-08-24 11:13:15,759 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 11:13:15,764 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5180db22, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 11:13:15,764 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-24 11:13:15,769 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 11:13:15,769 INFO L124 PetriNetUnfolderBase]: 0/22 cut-off events. [2023-08-24 11:13:15,769 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 11:13:15,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:13:15,770 INFO L208 CegarLoopForPetriNet]: 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] [2023-08-24 11:13:15,771 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 11:13:15,774 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:13:15,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1212926621, now seen corresponding path program 1 times [2023-08-24 11:13:15,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:13:15,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331641624] [2023-08-24 11:13:15,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:13:15,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:13:15,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:13:16,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:13:16,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:13:16,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331641624] [2023-08-24 11:13:16,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331641624] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:13:16,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:13:16,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 11:13:16,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104449054] [2023-08-24 11:13:16,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:13:16,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 11:13:16,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:13:16,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 11:13:16,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-24 11:13:16,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 143 [2023-08-24 11:13:16,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 58 flow. Second operand has 6 states, 6 states have (on average 78.16666666666667) internal successors, (469), 6 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:16,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:13:16,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 143 [2023-08-24 11:13:16,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:13:16,544 INFO L124 PetriNetUnfolderBase]: 135/313 cut-off events. [2023-08-24 11:13:16,544 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-08-24 11:13:16,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 612 conditions, 313 events. 135/313 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1388 event pairs, 37 based on Foata normal form. 1/310 useless extension candidates. Maximal degree in co-relation 530. Up to 129 conditions per place. [2023-08-24 11:13:16,551 INFO L140 encePairwiseOnDemand]: 138/143 looper letters, 24 selfloop transitions, 4 changer transitions 15/47 dead transitions. [2023-08-24 11:13:16,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 47 transitions, 201 flow [2023-08-24 11:13:16,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 11:13:16,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 11:13:16,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 494 transitions. [2023-08-24 11:13:16,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5757575757575758 [2023-08-24 11:13:16,564 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 494 transitions. [2023-08-24 11:13:16,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 494 transitions. [2023-08-24 11:13:16,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:13:16,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 494 transitions. [2023-08-24 11:13:16,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 82.33333333333333) internal successors, (494), 6 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:16,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 143.0) internal successors, (1001), 7 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:16,576 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 143.0) internal successors, (1001), 7 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:16,578 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 58 flow. Second operand 6 states and 494 transitions. [2023-08-24 11:13:16,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 47 transitions, 201 flow [2023-08-24 11:13:16,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 47 transitions, 187 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-24 11:13:16,582 INFO L231 Difference]: Finished difference. Result has 34 places, 25 transitions, 73 flow [2023-08-24 11:13:16,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=73, PETRI_PLACES=34, PETRI_TRANSITIONS=25} [2023-08-24 11:13:16,587 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2023-08-24 11:13:16,587 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 25 transitions, 73 flow [2023-08-24 11:13:16,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 78.16666666666667) internal successors, (469), 6 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:16,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:13:16,588 INFO L208 CegarLoopForPetriNet]: 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] [2023-08-24 11:13:16,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 11:13:16,588 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 11:13:16,589 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:13:16,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1975226585, now seen corresponding path program 2 times [2023-08-24 11:13:16,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:13:16,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160942547] [2023-08-24 11:13:16,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:13:16,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:13:16,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:13:16,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:13:16,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:13:16,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160942547] [2023-08-24 11:13:16,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160942547] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:13:16,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:13:16,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 11:13:16,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207978160] [2023-08-24 11:13:16,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:13:16,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 11:13:16,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:13:16,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 11:13:16,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 11:13:16,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 143 [2023-08-24 11:13:16,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 25 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:16,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:13:16,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 143 [2023-08-24 11:13:16,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:13:16,845 INFO L124 PetriNetUnfolderBase]: 58/163 cut-off events. [2023-08-24 11:13:16,845 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-08-24 11:13:16,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 353 conditions, 163 events. 58/163 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 528 event pairs, 20 based on Foata normal form. 30/193 useless extension candidates. Maximal degree in co-relation 344. Up to 98 conditions per place. [2023-08-24 11:13:16,849 INFO L140 encePairwiseOnDemand]: 135/143 looper letters, 18 selfloop transitions, 8 changer transitions 1/29 dead transitions. [2023-08-24 11:13:16,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 29 transitions, 134 flow [2023-08-24 11:13:16,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 11:13:16,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 11:13:16,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 231 transitions. [2023-08-24 11:13:16,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5384615384615384 [2023-08-24 11:13:16,854 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 231 transitions. [2023-08-24 11:13:16,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 231 transitions. [2023-08-24 11:13:16,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:13:16,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 231 transitions. [2023-08-24 11:13:16,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:16,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:16,859 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:16,859 INFO L175 Difference]: Start difference. First operand has 34 places, 25 transitions, 73 flow. Second operand 3 states and 231 transitions. [2023-08-24 11:13:16,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 29 transitions, 134 flow [2023-08-24 11:13:16,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 29 transitions, 130 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-24 11:13:16,861 INFO L231 Difference]: Finished difference. Result has 32 places, 23 transitions, 74 flow [2023-08-24 11:13:16,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=32, PETRI_TRANSITIONS=23} [2023-08-24 11:13:16,862 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 2 predicate places. [2023-08-24 11:13:16,862 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 23 transitions, 74 flow [2023-08-24 11:13:16,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:16,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:13:16,864 INFO L208 CegarLoopForPetriNet]: 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] [2023-08-24 11:13:16,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 11:13:16,868 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 11:13:16,870 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:13:16,875 INFO L85 PathProgramCache]: Analyzing trace with hash 507313731, now seen corresponding path program 3 times [2023-08-24 11:13:16,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:13:16,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090051020] [2023-08-24 11:13:16,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:13:16,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:13:16,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:13:17,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:13:17,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:13:17,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090051020] [2023-08-24 11:13:17,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090051020] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:13:17,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:13:17,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 11:13:17,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979619530] [2023-08-24 11:13:17,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:13:17,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 11:13:17,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:13:17,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 11:13:17,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-24 11:13:17,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 143 [2023-08-24 11:13:17,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 23 transitions, 74 flow. Second operand has 6 states, 6 states have (on average 78.16666666666667) internal successors, (469), 6 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:17,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:13:17,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 143 [2023-08-24 11:13:17,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:13:17,180 INFO L124 PetriNetUnfolderBase]: 43/133 cut-off events. [2023-08-24 11:13:17,180 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-08-24 11:13:17,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 320 conditions, 133 events. 43/133 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 391 event pairs, 6 based on Foata normal form. 1/134 useless extension candidates. Maximal degree in co-relation 114. Up to 47 conditions per place. [2023-08-24 11:13:17,181 INFO L140 encePairwiseOnDemand]: 138/143 looper letters, 0 selfloop transitions, 0 changer transitions 35/35 dead transitions. [2023-08-24 11:13:17,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 35 transitions, 167 flow [2023-08-24 11:13:17,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 11:13:17,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 11:13:17,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 482 transitions. [2023-08-24 11:13:17,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5617715617715617 [2023-08-24 11:13:17,183 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 482 transitions. [2023-08-24 11:13:17,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 482 transitions. [2023-08-24 11:13:17,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:13:17,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 482 transitions. [2023-08-24 11:13:17,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 80.33333333333333) internal successors, (482), 6 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:17,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 143.0) internal successors, (1001), 7 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:17,188 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 143.0) internal successors, (1001), 7 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:17,188 INFO L175 Difference]: Start difference. First operand has 32 places, 23 transitions, 74 flow. Second operand 6 states and 482 transitions. [2023-08-24 11:13:17,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 35 transitions, 167 flow [2023-08-24 11:13:17,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 35 transitions, 153 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-24 11:13:17,191 INFO L231 Difference]: Finished difference. Result has 32 places, 0 transitions, 0 flow [2023-08-24 11:13:17,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=32, PETRI_TRANSITIONS=0} [2023-08-24 11:13:17,192 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 2 predicate places. [2023-08-24 11:13:17,192 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 0 transitions, 0 flow [2023-08-24 11:13:17,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 78.16666666666667) internal successors, (469), 6 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:17,195 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-24 11:13:17,195 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-24 11:13:17,196 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-24 11:13:17,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 11:13:17,196 INFO L445 BasicCegarLoop]: Path program histogram: [3] [2023-08-24 11:13:17,200 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 11:13:17,200 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 11:13:17,204 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 11:13:17 BasicIcfg [2023-08-24 11:13:17,204 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 11:13:17,207 INFO L158 Benchmark]: Toolchain (without parser) took 5785.05ms. Allocated memory was 350.2MB in the beginning and 446.7MB in the end (delta: 96.5MB). Free memory was 324.5MB in the beginning and 417.2MB in the end (delta: -92.7MB). Peak memory consumption was 262.6MB. Max. memory is 16.0GB. [2023-08-24 11:13:17,207 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 350.2MB. Free memory was 327.0MB in the beginning and 326.9MB in the end (delta: 144.5kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 11:13:17,210 INFO L158 Benchmark]: CACSL2BoogieTranslator took 425.09ms. Allocated memory is still 350.2MB. Free memory was 324.5MB in the beginning and 304.8MB in the end (delta: 19.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-24 11:13:17,210 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.87ms. Allocated memory is still 350.2MB. Free memory was 304.8MB in the beginning and 302.6MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 11:13:17,210 INFO L158 Benchmark]: Boogie Preprocessor took 36.76ms. Allocated memory is still 350.2MB. Free memory was 302.6MB in the beginning and 301.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 11:13:17,211 INFO L158 Benchmark]: RCFGBuilder took 415.51ms. Allocated memory is still 350.2MB. Free memory was 301.4MB in the beginning and 287.2MB in the end (delta: 14.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-24 11:13:17,211 INFO L158 Benchmark]: TraceAbstraction took 4841.31ms. Allocated memory was 350.2MB in the beginning and 446.7MB in the end (delta: 96.5MB). Free memory was 286.3MB in the beginning and 417.2MB in the end (delta: -130.9MB). Peak memory consumption was 224.8MB. Max. memory is 16.0GB. [2023-08-24 11:13:17,216 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 350.2MB. Free memory was 327.0MB in the beginning and 326.9MB in the end (delta: 144.5kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 425.09ms. Allocated memory is still 350.2MB. Free memory was 324.5MB in the beginning and 304.8MB in the end (delta: 19.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 60.87ms. Allocated memory is still 350.2MB. Free memory was 304.8MB in the beginning and 302.6MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 36.76ms. Allocated memory is still 350.2MB. Free memory was 302.6MB in the beginning and 301.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 415.51ms. Allocated memory is still 350.2MB. Free memory was 301.4MB in the beginning and 287.2MB in the end (delta: 14.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 4841.31ms. Allocated memory was 350.2MB in the beginning and 446.7MB in the end (delta: 96.5MB). Free memory was 286.3MB in the beginning and 417.2MB in the end (delta: -130.9MB). Peak memory consumption was 224.8MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 257]: Unsoundness Warning unspecified type, defaulting to int C: short [257] - GenericResultAtLocation [Line: 257]: Unsoundness Warning unspecified type, defaulting to int C: short [257] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.1s, 84 PlacesBefore, 30 PlacesAfterwards, 77 TransitionsBefore, 23 TransitionsAfterwards, 732 CoEnabledTransitionPairs, 6 FixpointIterations, 35 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 54 TotalNumberOfCompositions, 2433 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1335, independent: 1170, independent conditional: 0, independent unconditional: 1170, dependent: 165, dependent conditional: 0, dependent unconditional: 165, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 373, independent: 348, independent conditional: 0, independent unconditional: 348, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1335, independent: 822, independent conditional: 0, independent unconditional: 822, dependent: 140, dependent conditional: 0, dependent unconditional: 140, unknown: 373, unknown conditional: 0, unknown unconditional: 373] , Statistics on independence cache: Total cache size (in pairs): 72, Positive cache size: 61, Positive conditional cache size: 0, Positive unconditional cache size: 61, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 727]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 119 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.7s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 31 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 31 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 311 IncrementalHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 1 mSDtfsCounter, 311 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=2, InterpolantAutomatonStates: 15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 69 NumberOfCodeBlocks, 69 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 66 ConstructedInterpolants, 0 QuantifiedInterpolants, 354 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-24 11:13:17,237 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...