/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 --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/pthread/lazy01.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 09:22:56,262 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 09:22:56,347 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 [2023-08-27 09:22:56,352 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 09:22:56,352 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 09:22:56,382 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 09:22:56,383 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 09:22:56,383 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 09:22:56,384 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 09:22:56,387 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 09:22:56,388 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 09:22:56,388 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 09:22:56,388 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 09:22:56,389 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 09:22:56,390 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 09:22:56,390 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 09:22:56,390 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 09:22:56,390 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 09:22:56,390 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 09:22:56,391 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 09:22:56,391 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 09:22:56,392 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 09:22:56,392 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 09:22:56,392 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 09:22:56,393 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 09:22:56,393 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 09:22:56,393 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 09:22:56,393 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 09:22:56,393 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 09:22:56,394 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 09:22:56,395 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 09:22:56,395 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 09:22:56,395 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 09:22:56,395 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 09:22:56,395 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 09:22:56,395 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 09:22:56,731 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 09:22:56,752 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 09:22:56,754 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 09:22:56,755 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 09:22:56,756 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 09:22:56,757 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/lazy01.i [2023-08-27 09:22:57,803 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 09:22:58,099 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 09:22:58,100 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/lazy01.i [2023-08-27 09:22:58,117 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8656e1ebb/36b3ba2dcd444a2a81022f91576940db/FLAGab1f8a5e8 [2023-08-27 09:22:58,133 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8656e1ebb/36b3ba2dcd444a2a81022f91576940db [2023-08-27 09:22:58,138 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 09:22:58,139 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 09:22:58,141 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 09:22:58,141 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 09:22:58,143 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 09:22:58,144 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:22:58" (1/1) ... [2023-08-27 09:22:58,145 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@231e9bd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:22:58, skipping insertion in model container [2023-08-27 09:22:58,145 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:22:58" (1/1) ... [2023-08-27 09:22:58,183 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 09:22:58,438 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 09:22:58,451 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 09:22:58,482 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [257] [2023-08-27 09:22:58,483 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [257] [2023-08-27 09:22:58,513 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 09:22:58,552 INFO L206 MainTranslator]: Completed translation [2023-08-27 09:22:58,552 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:22:58 WrapperNode [2023-08-27 09:22:58,552 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 09:22:58,554 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 09:22:58,554 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 09:22:58,554 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 09:22:58,560 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:22:58" (1/1) ... [2023-08-27 09:22:58,584 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:22:58" (1/1) ... [2023-08-27 09:22:58,611 INFO L138 Inliner]: procedures = 169, calls = 34, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 75 [2023-08-27 09:22:58,611 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 09:22:58,612 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 09:22:58,612 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 09:22:58,612 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 09:22:58,620 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:22:58" (1/1) ... [2023-08-27 09:22:58,620 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:22:58" (1/1) ... [2023-08-27 09:22:58,633 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:22:58" (1/1) ... [2023-08-27 09:22:58,634 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:22:58" (1/1) ... [2023-08-27 09:22:58,642 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:22:58" (1/1) ... [2023-08-27 09:22:58,643 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:22:58" (1/1) ... [2023-08-27 09:22:58,649 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:22:58" (1/1) ... [2023-08-27 09:22:58,650 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:22:58" (1/1) ... [2023-08-27 09:22:58,652 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 09:22:58,653 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 09:22:58,653 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 09:22:58,653 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 09:22:58,654 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:22:58" (1/1) ... [2023-08-27 09:22:58,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 09:22:58,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:22:58,686 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) [2023-08-27 09:22:58,709 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 [2023-08-27 09:22:58,723 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 09:22:58,723 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 09:22:58,724 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 09:22:58,724 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 09:22:58,724 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 09:22:58,724 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-27 09:22:58,725 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-27 09:22:58,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 09:22:58,725 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-27 09:22:58,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 09:22:58,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 09:22:58,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 09:22:58,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 09:22:58,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 09:22:58,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 09:22:58,727 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 09:22:58,851 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 09:22:58,854 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 09:22:59,075 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 09:22:59,084 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 09:22:59,084 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-27 09:22:59,086 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:22:59 BoogieIcfgContainer [2023-08-27 09:22:59,086 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 09:22:59,089 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 09:22:59,089 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 09:22:59,092 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 09:22:59,092 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 09:22:58" (1/3) ... [2023-08-27 09:22:59,093 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eb6e9f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:22:59, skipping insertion in model container [2023-08-27 09:22:59,093 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:22:58" (2/3) ... [2023-08-27 09:22:59,094 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eb6e9f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:22:59, skipping insertion in model container [2023-08-27 09:22:59,094 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:22:59" (3/3) ... [2023-08-27 09:22:59,096 INFO L112 eAbstractionObserver]: Analyzing ICFG lazy01.i [2023-08-27 09:22:59,112 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 09:22:59,113 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2023-08-27 09:22:59,113 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 09:22:59,197 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-27 09:22:59,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 99 transitions, 222 flow [2023-08-27 09:22:59,321 INFO L124 PetriNetUnfolderBase]: 2/96 cut-off events. [2023-08-27 09:22:59,321 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 09:22:59,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 96 events. 2/96 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 110 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2023-08-27 09:22:59,326 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 99 transitions, 222 flow [2023-08-27 09:22:59,332 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 93 places, 85 transitions, 185 flow [2023-08-27 09:22:59,336 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 09:22:59,352 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 93 places, 85 transitions, 185 flow [2023-08-27 09:22:59,354 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 93 places, 85 transitions, 185 flow [2023-08-27 09:22:59,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 85 transitions, 185 flow [2023-08-27 09:22:59,390 INFO L124 PetriNetUnfolderBase]: 2/85 cut-off events. [2023-08-27 09:22:59,390 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 09:22:59,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 85 events. 2/85 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 110 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2023-08-27 09:22:59,392 INFO L119 LiptonReduction]: Number of co-enabled transitions 1930 [2023-08-27 09:23:01,832 INFO L134 LiptonReduction]: Checked pairs total: 5541 [2023-08-27 09:23:01,833 INFO L136 LiptonReduction]: Total number of compositions: 65 [2023-08-27 09:23:01,845 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 09:23:01,851 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;@1bde0c0e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 09:23:01,851 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-08-27 09:23:01,855 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 09:23:01,855 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-08-27 09:23:01,855 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 09:23:01,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:23:01,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 09:23:01,856 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 09:23:01,860 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:23:01,860 INFO L85 PathProgramCache]: Analyzing trace with hash 10552522, now seen corresponding path program 1 times [2023-08-27 09:23:01,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:23:01,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362772521] [2023-08-27 09:23:01,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:23:01,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:23:01,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:23:02,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:23:02,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:23:02,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362772521] [2023-08-27 09:23:02,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362772521] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:23:02,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:23:02,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 09:23:02,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481107011] [2023-08-27 09:23:02,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:23:02,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 09:23:02,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:23:02,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 09:23:02,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 09:23:02,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 164 [2023-08-27 09:23:02,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 30 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:23:02,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:23:02,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 164 [2023-08-27 09:23:02,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:23:02,380 INFO L124 PetriNetUnfolderBase]: 937/1470 cut-off events. [2023-08-27 09:23:02,381 INFO L125 PetriNetUnfolderBase]: For 131/131 co-relation queries the response was YES. [2023-08-27 09:23:02,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3078 conditions, 1470 events. 937/1470 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 6326 event pairs, 367 based on Foata normal form. 0/1284 useless extension candidates. Maximal degree in co-relation 2558. Up to 1145 conditions per place. [2023-08-27 09:23:02,394 INFO L140 encePairwiseOnDemand]: 155/164 looper letters, 40 selfloop transitions, 3 changer transitions 0/43 dead transitions. [2023-08-27 09:23:02,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 43 transitions, 193 flow [2023-08-27 09:23:02,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 09:23:02,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 09:23:02,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 290 transitions. [2023-08-27 09:23:02,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5894308943089431 [2023-08-27 09:23:02,412 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 290 transitions. [2023-08-27 09:23:02,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 290 transitions. [2023-08-27 09:23:02,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:23:02,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 290 transitions. [2023-08-27 09:23:02,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:23:02,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:23:02,427 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:23:02,428 INFO L175 Difference]: Start difference. First operand has 39 places, 30 transitions, 75 flow. Second operand 3 states and 290 transitions. [2023-08-27 09:23:02,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 43 transitions, 193 flow [2023-08-27 09:23:02,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 43 transitions, 181 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-27 09:23:02,437 INFO L231 Difference]: Finished difference. Result has 36 places, 30 transitions, 89 flow [2023-08-27 09:23:02,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=89, PETRI_PLACES=36, PETRI_TRANSITIONS=30} [2023-08-27 09:23:02,442 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -3 predicate places. [2023-08-27 09:23:02,443 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 30 transitions, 89 flow [2023-08-27 09:23:02,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:23:02,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:23:02,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:23:02,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 09:23:02,444 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 09:23:02,445 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:23:02,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1511434688, now seen corresponding path program 1 times [2023-08-27 09:23:02,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:23:02,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431400367] [2023-08-27 09:23:02,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:23:02,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:23:02,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:23:02,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:23:02,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:23:02,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431400367] [2023-08-27 09:23:02,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431400367] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:23:02,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:23:02,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 09:23:02,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358178210] [2023-08-27 09:23:02,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:23:02,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 09:23:02,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:23:02,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 09:23:02,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 09:23:02,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 164 [2023-08-27 09:23:02,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 30 transitions, 89 flow. Second operand has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:23:02,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:23:02,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 164 [2023-08-27 09:23:02,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:23:02,732 INFO L124 PetriNetUnfolderBase]: 126/345 cut-off events. [2023-08-27 09:23:02,732 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-08-27 09:23:02,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 767 conditions, 345 events. 126/345 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1719 event pairs, 31 based on Foata normal form. 78/417 useless extension candidates. Maximal degree in co-relation 359. Up to 211 conditions per place. [2023-08-27 09:23:02,734 INFO L140 encePairwiseOnDemand]: 158/164 looper letters, 28 selfloop transitions, 6 changer transitions 0/39 dead transitions. [2023-08-27 09:23:02,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 39 transitions, 180 flow [2023-08-27 09:23:02,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 09:23:02,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 09:23:02,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 267 transitions. [2023-08-27 09:23:02,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5426829268292683 [2023-08-27 09:23:02,736 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 267 transitions. [2023-08-27 09:23:02,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 267 transitions. [2023-08-27 09:23:02,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:23:02,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 267 transitions. [2023-08-27 09:23:02,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:23:02,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:23:02,739 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:23:02,739 INFO L175 Difference]: Start difference. First operand has 36 places, 30 transitions, 89 flow. Second operand 3 states and 267 transitions. [2023-08-27 09:23:02,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 39 transitions, 180 flow [2023-08-27 09:23:02,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 39 transitions, 177 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 09:23:02,741 INFO L231 Difference]: Finished difference. Result has 37 places, 30 transitions, 98 flow [2023-08-27 09:23:02,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=37, PETRI_TRANSITIONS=30} [2023-08-27 09:23:02,742 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -2 predicate places. [2023-08-27 09:23:02,742 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 30 transitions, 98 flow [2023-08-27 09:23:02,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:23:02,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:23:02,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:23:02,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 09:23:02,743 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 09:23:02,743 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:23:02,743 INFO L85 PathProgramCache]: Analyzing trace with hash -945348607, now seen corresponding path program 1 times [2023-08-27 09:23:02,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:23:02,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826138542] [2023-08-27 09:23:02,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:23:02,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:23:02,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:23:02,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:23:02,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:23:02,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826138542] [2023-08-27 09:23:02,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826138542] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:23:02,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:23:02,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 09:23:02,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036134129] [2023-08-27 09:23:02,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:23:02,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 09:23:02,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:23:02,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 09:23:02,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 09:23:02,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 164 [2023-08-27 09:23:02,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 30 transitions, 98 flow. Second operand has 5 states, 5 states have (on average 77.0) internal successors, (385), 5 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:23:02,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:23:02,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 164 [2023-08-27 09:23:02,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:23:02,972 INFO L124 PetriNetUnfolderBase]: 176/405 cut-off events. [2023-08-27 09:23:02,972 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2023-08-27 09:23:02,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1027 conditions, 405 events. 176/405 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1690 event pairs, 71 based on Foata normal form. 10/415 useless extension candidates. Maximal degree in co-relation 290. Up to 275 conditions per place. [2023-08-27 09:23:02,975 INFO L140 encePairwiseOnDemand]: 157/164 looper letters, 50 selfloop transitions, 6 changer transitions 2/58 dead transitions. [2023-08-27 09:23:02,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 58 transitions, 292 flow [2023-08-27 09:23:02,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 09:23:02,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 09:23:02,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 435 transitions. [2023-08-27 09:23:02,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5304878048780488 [2023-08-27 09:23:02,977 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 435 transitions. [2023-08-27 09:23:02,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 435 transitions. [2023-08-27 09:23:02,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:23:02,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 435 transitions. [2023-08-27 09:23:02,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:23:02,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 164.0) internal successors, (984), 6 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:23:02,981 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 164.0) internal successors, (984), 6 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:23:02,982 INFO L175 Difference]: Start difference. First operand has 37 places, 30 transitions, 98 flow. Second operand 5 states and 435 transitions. [2023-08-27 09:23:02,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 58 transitions, 292 flow [2023-08-27 09:23:02,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 58 transitions, 279 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 09:23:02,985 INFO L231 Difference]: Finished difference. Result has 40 places, 30 transitions, 112 flow [2023-08-27 09:23:02,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=112, PETRI_PLACES=40, PETRI_TRANSITIONS=30} [2023-08-27 09:23:02,987 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 1 predicate places. [2023-08-27 09:23:02,989 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 30 transitions, 112 flow [2023-08-27 09:23:02,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 77.0) internal successors, (385), 5 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:23:02,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:23:02,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:23:02,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 09:23:02,991 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 09:23:02,991 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:23:02,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1641407607, now seen corresponding path program 1 times [2023-08-27 09:23:02,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:23:02,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430209632] [2023-08-27 09:23:02,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:23:02,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:23:03,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:23:03,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:23:03,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:23:03,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430209632] [2023-08-27 09:23:03,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430209632] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:23:03,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:23:03,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 09:23:03,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458452983] [2023-08-27 09:23:03,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:23:03,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 09:23:03,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:23:03,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 09:23:03,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 09:23:03,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 164 [2023-08-27 09:23:03,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 30 transitions, 112 flow. Second operand has 5 states, 5 states have (on average 77.2) internal successors, (386), 5 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:23:03,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:23:03,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 164 [2023-08-27 09:23:03,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:23:03,200 INFO L124 PetriNetUnfolderBase]: 165/380 cut-off events. [2023-08-27 09:23:03,201 INFO L125 PetriNetUnfolderBase]: For 114/114 co-relation queries the response was YES. [2023-08-27 09:23:03,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 983 conditions, 380 events. 165/380 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1551 event pairs, 51 based on Foata normal form. 14/394 useless extension candidates. Maximal degree in co-relation 758. Up to 203 conditions per place. [2023-08-27 09:23:03,203 INFO L140 encePairwiseOnDemand]: 158/164 looper letters, 47 selfloop transitions, 5 changer transitions 3/55 dead transitions. [2023-08-27 09:23:03,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 55 transitions, 286 flow [2023-08-27 09:23:03,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 09:23:03,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 09:23:03,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 431 transitions. [2023-08-27 09:23:03,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.525609756097561 [2023-08-27 09:23:03,205 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 431 transitions. [2023-08-27 09:23:03,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 431 transitions. [2023-08-27 09:23:03,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:23:03,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 431 transitions. [2023-08-27 09:23:03,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 86.2) internal successors, (431), 5 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:23:03,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 164.0) internal successors, (984), 6 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:23:03,208 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 164.0) internal successors, (984), 6 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:23:03,208 INFO L175 Difference]: Start difference. First operand has 40 places, 30 transitions, 112 flow. Second operand 5 states and 431 transitions. [2023-08-27 09:23:03,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 55 transitions, 286 flow [2023-08-27 09:23:03,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 55 transitions, 281 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-27 09:23:03,211 INFO L231 Difference]: Finished difference. Result has 43 places, 29 transitions, 117 flow [2023-08-27 09:23:03,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=117, PETRI_PLACES=43, PETRI_TRANSITIONS=29} [2023-08-27 09:23:03,212 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 4 predicate places. [2023-08-27 09:23:03,212 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 29 transitions, 117 flow [2023-08-27 09:23:03,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 77.2) internal successors, (386), 5 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:23:03,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:23:03,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:23:03,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 09:23:03,213 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 09:23:03,213 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:23:03,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1824938196, now seen corresponding path program 1 times [2023-08-27 09:23:03,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:23:03,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837743076] [2023-08-27 09:23:03,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:23:03,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:23:03,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:23:03,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:23:03,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:23:03,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837743076] [2023-08-27 09:23:03,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837743076] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:23:03,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:23:03,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 09:23:03,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15934581] [2023-08-27 09:23:03,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:23:03,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 09:23:03,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:23:03,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 09:23:03,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 09:23:03,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 164 [2023-08-27 09:23:03,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 29 transitions, 117 flow. Second operand has 4 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:23:03,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:23:03,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 164 [2023-08-27 09:23:03,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:23:03,357 INFO L124 PetriNetUnfolderBase]: 170/405 cut-off events. [2023-08-27 09:23:03,358 INFO L125 PetriNetUnfolderBase]: For 174/174 co-relation queries the response was YES. [2023-08-27 09:23:03,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1077 conditions, 405 events. 170/405 cut-off events. For 174/174 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1731 event pairs, 61 based on Foata normal form. 8/413 useless extension candidates. Maximal degree in co-relation 850. Up to 205 conditions per place. [2023-08-27 09:23:03,360 INFO L140 encePairwiseOnDemand]: 158/164 looper letters, 35 selfloop transitions, 4 changer transitions 15/54 dead transitions. [2023-08-27 09:23:03,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 54 transitions, 292 flow [2023-08-27 09:23:03,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 09:23:03,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 09:23:03,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 375 transitions. [2023-08-27 09:23:03,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5716463414634146 [2023-08-27 09:23:03,367 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 375 transitions. [2023-08-27 09:23:03,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 375 transitions. [2023-08-27 09:23:03,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:23:03,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 375 transitions. [2023-08-27 09:23:03,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:23:03,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 164.0) internal successors, (820), 5 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:23:03,371 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 164.0) internal successors, (820), 5 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:23:03,371 INFO L175 Difference]: Start difference. First operand has 43 places, 29 transitions, 117 flow. Second operand 4 states and 375 transitions. [2023-08-27 09:23:03,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 54 transitions, 292 flow [2023-08-27 09:23:03,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 54 transitions, 279 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-27 09:23:03,375 INFO L231 Difference]: Finished difference. Result has 43 places, 26 transitions, 112 flow [2023-08-27 09:23:03,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=112, PETRI_PLACES=43, PETRI_TRANSITIONS=26} [2023-08-27 09:23:03,377 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 4 predicate places. [2023-08-27 09:23:03,377 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 26 transitions, 112 flow [2023-08-27 09:23:03,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:23:03,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:23:03,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:23:03,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 09:23:03,378 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 09:23:03,379 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:23:03,379 INFO L85 PathProgramCache]: Analyzing trace with hash 643317342, now seen corresponding path program 1 times [2023-08-27 09:23:03,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:23:03,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914747430] [2023-08-27 09:23:03,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:23:03,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:23:03,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 09:23:03,406 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 09:23:03,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 09:23:03,445 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 09:23:03,445 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 09:23:03,446 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thread3Err0ASSERT_VIOLATIONASSERT (12 of 13 remaining) [2023-08-27 09:23:03,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2023-08-27 09:23:03,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2023-08-27 09:23:03,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2023-08-27 09:23:03,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2023-08-27 09:23:03,452 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0ASSERT_VIOLATIONASSERT (7 of 13 remaining) [2023-08-27 09:23:03,452 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 13 remaining) [2023-08-27 09:23:03,452 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 13 remaining) [2023-08-27 09:23:03,452 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 13 remaining) [2023-08-27 09:23:03,453 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2023-08-27 09:23:03,453 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2023-08-27 09:23:03,453 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2023-08-27 09:23:03,453 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2023-08-27 09:23:03,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 09:23:03,454 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-27 09:23:03,459 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 09:23:03,459 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 09:23:03,501 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 09:23:03 BasicIcfg [2023-08-27 09:23:03,501 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 09:23:03,502 INFO L158 Benchmark]: Toolchain (without parser) took 5362.69ms. Allocated memory was 362.8MB in the beginning and 461.4MB in the end (delta: 98.6MB). Free memory was 338.0MB in the beginning and 327.6MB in the end (delta: 10.4MB). Peak memory consumption was 110.5MB. Max. memory is 16.0GB. [2023-08-27 09:23:03,502 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 362.8MB. Free memory is still 339.4MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 09:23:03,502 INFO L158 Benchmark]: CACSL2BoogieTranslator took 411.62ms. Allocated memory is still 362.8MB. Free memory was 337.5MB in the beginning and 318.1MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-27 09:23:03,502 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.71ms. Allocated memory is still 362.8MB. Free memory was 318.1MB in the beginning and 316.0MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 09:23:03,503 INFO L158 Benchmark]: Boogie Preprocessor took 40.51ms. Allocated memory is still 362.8MB. Free memory was 316.0MB in the beginning and 314.9MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 09:23:03,503 INFO L158 Benchmark]: RCFGBuilder took 433.32ms. Allocated memory is still 362.8MB. Free memory was 314.4MB in the beginning and 300.2MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-27 09:23:03,503 INFO L158 Benchmark]: TraceAbstraction took 4412.30ms. Allocated memory was 362.8MB in the beginning and 461.4MB in the end (delta: 98.6MB). Free memory was 299.3MB in the beginning and 327.6MB in the end (delta: -28.3MB). Peak memory consumption was 72.8MB. Max. memory is 16.0GB. [2023-08-27 09:23:03,505 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 362.8MB. Free memory is still 339.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 411.62ms. Allocated memory is still 362.8MB. Free memory was 337.5MB in the beginning and 318.1MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 57.71ms. Allocated memory is still 362.8MB. Free memory was 318.1MB in the beginning and 316.0MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 40.51ms. Allocated memory is still 362.8MB. Free memory was 316.0MB in the beginning and 314.9MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 433.32ms. Allocated memory is still 362.8MB. Free memory was 314.4MB in the beginning and 300.2MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 4412.30ms. Allocated memory was 362.8MB in the beginning and 461.4MB in the end (delta: 98.6MB). Free memory was 299.3MB in the beginning and 327.6MB in the end (delta: -28.3MB). Peak memory consumption was 72.8MB. 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: 2.5s, 93 PlacesBefore, 39 PlacesAfterwards, 85 TransitionsBefore, 30 TransitionsAfterwards, 1930 CoEnabledTransitionPairs, 6 FixpointIterations, 23 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 65 TotalNumberOfCompositions, 5541 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2832, independent: 2638, independent conditional: 0, independent unconditional: 2638, dependent: 194, dependent conditional: 0, dependent unconditional: 194, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1107, independent: 1068, independent conditional: 0, independent unconditional: 1068, dependent: 39, dependent conditional: 0, dependent unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2832, independent: 1570, independent conditional: 0, independent unconditional: 1570, dependent: 155, dependent conditional: 0, dependent unconditional: 155, unknown: 1107, unknown conditional: 0, unknown unconditional: 1107] , Statistics on independence cache: Total cache size (in pairs): 155, Positive cache size: 139, Positive conditional cache size: 0, Positive unconditional cache size: 139, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 20]: assertion can be violated assertion can be violated We found a FailurePath: [L702] 0 pthread_mutex_t mutex; [L703] 0 int data = 0; [L731] 0 pthread_t t1, t2, t3; [L732] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, data=0, mutex={3:0}, pthread_create(&t1, 0, thread1, 0)=0, t1={5:0}, t2={7:0}, t3={6:0}] [L733] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, data=0, mutex={3:0}, pthread_create(&t2, 0, thread2, 0)=1, t1={5:0}, t2={7:0}, t3={6:0}] [L714] 2 data+=2 VAL [arg={0:0}, arg={0:0}, arg={0:0}, data=0, mutex={3:0}] [L734] FCALL, FORK 0 pthread_create(&t3, 0, thread3, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, data=0, mutex={3:0}, pthread_create(&t3, 0, thread3, 0)=2, t1={5:0}, t2={7:0}, t3={6:0}] [L714] 2 data+=2 VAL [arg={0:0}, arg={0:0}, arg={0:0}, data=2, mutex={3:0}] [L716] 2 return 0; [L707] 1 data++ VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L709] 1 return 0; [L721] COND TRUE 3 data >= 3 [L722] CALL 3 reach_error() [L20] COND FALSE 3 !(0) [L20] 3 __assert_fail ("0", "lazy01.c", 3, __extension__ __PRETTY_FUNCTION__) VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] - UnprovableResult [Line: 707]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 707]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 734]: 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: 732]: 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: 733]: 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 7 procedures, 141 locations, 13 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: 4.2s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 107 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 107 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 415 IncrementalHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 1 mSDtfsCounter, 415 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=117occurred in iteration=4, InterpolantAutomatonStates: 20, 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, 0.5s InterpolantComputationTime, 62 NumberOfCodeBlocks, 62 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 128 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 RESULT: Ultimate proved your program to be incorrect! [2023-08-27 09:23:03,521 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...