/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/sync01.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 09:36:34,158 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 09:36:34,201 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 09:36:34,206 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 09:36:34,206 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 09:36:34,226 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 09:36:34,227 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 09:36:34,227 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 09:36:34,227 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 09:36:34,228 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 09:36:34,228 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 09:36:34,229 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 09:36:34,229 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 09:36:34,229 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 09:36:34,230 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 09:36:34,230 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 09:36:34,230 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 09:36:34,231 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 09:36:34,231 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 09:36:34,231 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 09:36:34,232 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 09:36:34,232 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 09:36:34,233 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 09:36:34,233 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 09:36:34,233 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 09:36:34,234 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 09:36:34,234 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 09:36:34,234 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 09:36:34,235 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 09:36:34,235 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 09:36:34,235 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 09:36:34,235 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 09:36:34,236 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 09:36:34,236 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 09:36:34,236 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 09:36:34,237 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 09:36:34,542 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 09:36:34,567 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 09:36:34,570 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 09:36:34,571 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 09:36:34,571 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 09:36:34,572 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/sync01.i [2023-08-27 09:36:35,780 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 09:36:36,039 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 09:36:36,040 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/sync01.i [2023-08-27 09:36:36,068 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9bd677e4/b2b3fb2282824413afc5215f08fd32f9/FLAG2715d3933 [2023-08-27 09:36:36,086 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9bd677e4/b2b3fb2282824413afc5215f08fd32f9 [2023-08-27 09:36:36,091 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 09:36:36,093 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 09:36:36,095 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 09:36:36,096 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 09:36:36,098 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 09:36:36,100 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:36:36" (1/1) ... [2023-08-27 09:36:36,100 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71784a9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:36:36, skipping insertion in model container [2023-08-27 09:36:36,100 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:36:36" (1/1) ... [2023-08-27 09:36:36,151 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 09:36:36,562 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 09:36:36,579 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 09:36:36,593 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [133] [2023-08-27 09:36:36,614 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [495] [2023-08-27 09:36:36,615 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [495] [2023-08-27 09:36:36,632 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 09:36:36,682 INFO L206 MainTranslator]: Completed translation [2023-08-27 09:36:36,683 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:36:36 WrapperNode [2023-08-27 09:36:36,683 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 09:36:36,684 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 09:36:36,684 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 09:36:36,684 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 09:36:36,690 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:36:36" (1/1) ... [2023-08-27 09:36:36,713 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:36:36" (1/1) ... [2023-08-27 09:36:36,733 INFO L138 Inliner]: procedures = 268, calls = 47, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 76 [2023-08-27 09:36:36,733 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 09:36:36,734 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 09:36:36,734 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 09:36:36,734 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 09:36:36,740 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:36:36" (1/1) ... [2023-08-27 09:36:36,741 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:36:36" (1/1) ... [2023-08-27 09:36:36,744 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:36:36" (1/1) ... [2023-08-27 09:36:36,744 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:36:36" (1/1) ... [2023-08-27 09:36:36,749 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:36:36" (1/1) ... [2023-08-27 09:36:36,753 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:36:36" (1/1) ... [2023-08-27 09:36:36,754 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:36:36" (1/1) ... [2023-08-27 09:36:36,755 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:36:36" (1/1) ... [2023-08-27 09:36:36,758 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 09:36:36,759 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 09:36:36,759 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 09:36:36,759 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 09:36:36,760 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:36:36" (1/1) ... [2023-08-27 09:36:36,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 09:36:36,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:36:36,788 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 09:36:36,804 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 09:36:36,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 09:36:36,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 09:36:36,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 09:36:36,834 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 09:36:36,835 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 09:36:36,835 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 09:36:36,835 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 09:36:36,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 09:36:36,835 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-27 09:36:36,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 09:36:36,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 09:36:36,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 09:36:36,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 09:36:36,837 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 09:36:36,991 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 09:36:36,995 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 09:36:37,258 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 09:36:37,267 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 09:36:37,267 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-27 09:36:37,269 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:36:37 BoogieIcfgContainer [2023-08-27 09:36:37,270 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 09:36:37,272 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 09:36:37,272 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 09:36:37,276 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 09:36:37,276 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 09:36:36" (1/3) ... [2023-08-27 09:36:37,277 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60359726 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:36:37, skipping insertion in model container [2023-08-27 09:36:37,277 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:36:36" (2/3) ... [2023-08-27 09:36:37,277 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60359726 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:36:37, skipping insertion in model container [2023-08-27 09:36:37,278 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:36:37" (3/3) ... [2023-08-27 09:36:37,279 INFO L112 eAbstractionObserver]: Analyzing ICFG sync01.i [2023-08-27 09:36:37,294 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 09:36:37,294 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2023-08-27 09:36:37,294 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 09:36:37,382 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-27 09:36:37,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 115 transitions, 246 flow [2023-08-27 09:36:37,468 INFO L124 PetriNetUnfolderBase]: 6/113 cut-off events. [2023-08-27 09:36:37,468 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 09:36:37,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 113 events. 6/113 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 103 event pairs, 0 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 71. Up to 2 conditions per place. [2023-08-27 09:36:37,473 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 115 transitions, 246 flow [2023-08-27 09:36:37,476 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 101 transitions, 214 flow [2023-08-27 09:36:37,479 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 09:36:37,487 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 104 places, 101 transitions, 214 flow [2023-08-27 09:36:37,489 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 104 places, 101 transitions, 214 flow [2023-08-27 09:36:37,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 101 transitions, 214 flow [2023-08-27 09:36:37,510 INFO L124 PetriNetUnfolderBase]: 4/101 cut-off events. [2023-08-27 09:36:37,511 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 09:36:37,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 101 events. 4/101 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 88 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 71. Up to 2 conditions per place. [2023-08-27 09:36:37,513 INFO L119 LiptonReduction]: Number of co-enabled transitions 1292 [2023-08-27 09:36:41,405 INFO L134 LiptonReduction]: Checked pairs total: 3359 [2023-08-27 09:36:41,406 INFO L136 LiptonReduction]: Total number of compositions: 74 [2023-08-27 09:36:41,417 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 09:36:41,424 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;@62748748, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 09:36:41,424 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-08-27 09:36:41,429 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 09:36:41,429 INFO L124 PetriNetUnfolderBase]: 2/13 cut-off events. [2023-08-27 09:36:41,429 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 09:36:41,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:36:41,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 09:36:41,430 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-08-27 09:36:41,434 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:36:41,434 INFO L85 PathProgramCache]: Analyzing trace with hash 381289786, now seen corresponding path program 1 times [2023-08-27 09:36:41,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:36:41,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850094928] [2023-08-27 09:36:41,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:36:41,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:36:41,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:36:41,594 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 09:36:41,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:36:41,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850094928] [2023-08-27 09:36:41,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850094928] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:36:41,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:36:41,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 09:36:41,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579711821] [2023-08-27 09:36:41,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:36:41,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-27 09:36:41,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:36:41,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-27 09:36:41,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-27 09:36:41,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 189 [2023-08-27 09:36:41,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 31 transitions, 74 flow. Second operand has 2 states, 2 states have (on average 108.0) internal successors, (216), 2 states have internal predecessors, (216), 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 09:36:41,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:36:41,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 189 [2023-08-27 09:36:41,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:36:41,698 INFO L124 PetriNetUnfolderBase]: 96/219 cut-off events. [2023-08-27 09:36:41,698 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-08-27 09:36:41,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 410 conditions, 219 events. 96/219 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 959 event pairs, 72 based on Foata normal form. 24/199 useless extension candidates. Maximal degree in co-relation 350. Up to 170 conditions per place. [2023-08-27 09:36:41,701 INFO L140 encePairwiseOnDemand]: 187/189 looper letters, 19 selfloop transitions, 0 changer transitions 0/29 dead transitions. [2023-08-27 09:36:41,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 29 transitions, 108 flow [2023-08-27 09:36:41,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-27 09:36:41,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-27 09:36:41,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 233 transitions. [2023-08-27 09:36:41,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6164021164021164 [2023-08-27 09:36:41,715 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 233 transitions. [2023-08-27 09:36:41,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 233 transitions. [2023-08-27 09:36:41,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:36:41,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 233 transitions. [2023-08-27 09:36:41,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 116.5) internal successors, (233), 2 states have internal predecessors, (233), 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 09:36:41,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 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 09:36:41,726 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 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 09:36:41,727 INFO L175 Difference]: Start difference. First operand has 34 places, 31 transitions, 74 flow. Second operand 2 states and 233 transitions. [2023-08-27 09:36:41,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 29 transitions, 108 flow [2023-08-27 09:36:41,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 29 transitions, 100 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 09:36:41,731 INFO L231 Difference]: Finished difference. Result has 31 places, 29 transitions, 62 flow [2023-08-27 09:36:41,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=62, PETRI_PLACES=31, PETRI_TRANSITIONS=29} [2023-08-27 09:36:41,736 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -3 predicate places. [2023-08-27 09:36:41,736 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 29 transitions, 62 flow [2023-08-27 09:36:41,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 108.0) internal successors, (216), 2 states have internal predecessors, (216), 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 09:36:41,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:36:41,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 09:36:41,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 09:36:41,737 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-08-27 09:36:41,738 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:36:41,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1064975980, now seen corresponding path program 1 times [2023-08-27 09:36:41,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:36:41,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268313751] [2023-08-27 09:36:41,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:36:41,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:36:41,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:36:41,871 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 09:36:41,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:36:41,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268313751] [2023-08-27 09:36:41,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268313751] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:36:41,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:36:41,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 09:36:41,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592721012] [2023-08-27 09:36:41,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:36:41,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 09:36:41,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:36:41,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 09:36:41,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 09:36:41,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 189 [2023-08-27 09:36:41,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 29 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 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 09:36:41,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:36:41,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 189 [2023-08-27 09:36:41,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:36:41,949 INFO L124 PetriNetUnfolderBase]: 86/174 cut-off events. [2023-08-27 09:36:41,949 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 09:36:41,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 342 conditions, 174 events. 86/174 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 461 event pairs, 46 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 339. Up to 83 conditions per place. [2023-08-27 09:36:41,951 INFO L140 encePairwiseOnDemand]: 185/189 looper letters, 25 selfloop transitions, 2 changer transitions 0/30 dead transitions. [2023-08-27 09:36:41,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 30 transitions, 118 flow [2023-08-27 09:36:41,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 09:36:41,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 09:36:41,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 311 transitions. [2023-08-27 09:36:41,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5485008818342152 [2023-08-27 09:36:41,954 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 311 transitions. [2023-08-27 09:36:41,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 311 transitions. [2023-08-27 09:36:41,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:36:41,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 311 transitions. [2023-08-27 09:36:41,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 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 09:36:41,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 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 09:36:41,958 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 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 09:36:41,958 INFO L175 Difference]: Start difference. First operand has 31 places, 29 transitions, 62 flow. Second operand 3 states and 311 transitions. [2023-08-27 09:36:41,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 30 transitions, 118 flow [2023-08-27 09:36:41,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 118 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 09:36:41,960 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 64 flow [2023-08-27 09:36:41,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2023-08-27 09:36:41,961 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -2 predicate places. [2023-08-27 09:36:41,961 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 64 flow [2023-08-27 09:36:41,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 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 09:36:41,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:36:41,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:36:41,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 09:36:41,962 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-08-27 09:36:41,962 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:36:41,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1031438794, now seen corresponding path program 1 times [2023-08-27 09:36:41,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:36:41,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20745748] [2023-08-27 09:36:41,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:36:41,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:36:41,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:36:42,067 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 09:36:42,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:36:42,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20745748] [2023-08-27 09:36:42,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20745748] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:36:42,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:36:42,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 09:36:42,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621885328] [2023-08-27 09:36:42,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:36:42,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 09:36:42,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:36:42,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 09:36:42,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 09:36:42,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 189 [2023-08-27 09:36:42,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 64 flow. Second operand has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 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 09:36:42,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:36:42,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 189 [2023-08-27 09:36:42,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:36:42,165 INFO L124 PetriNetUnfolderBase]: 77/153 cut-off events. [2023-08-27 09:36:42,165 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 09:36:42,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 153 events. 77/153 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 364 event pairs, 32 based on Foata normal form. 6/153 useless extension candidates. Maximal degree in co-relation 320. Up to 79 conditions per place. [2023-08-27 09:36:42,167 INFO L140 encePairwiseOnDemand]: 184/189 looper letters, 27 selfloop transitions, 3 changer transitions 0/32 dead transitions. [2023-08-27 09:36:42,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 32 transitions, 136 flow [2023-08-27 09:36:42,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 09:36:42,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 09:36:42,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 388 transitions. [2023-08-27 09:36:42,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5132275132275133 [2023-08-27 09:36:42,171 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 388 transitions. [2023-08-27 09:36:42,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 388 transitions. [2023-08-27 09:36:42,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:36:42,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 388 transitions. [2023-08-27 09:36:42,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 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 09:36:42,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 189.0) internal successors, (945), 5 states have internal predecessors, (945), 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 09:36:42,175 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 189.0) internal successors, (945), 5 states have internal predecessors, (945), 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 09:36:42,176 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 64 flow. Second operand 4 states and 388 transitions. [2023-08-27 09:36:42,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 32 transitions, 136 flow [2023-08-27 09:36:42,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 32 transitions, 132 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 09:36:42,177 INFO L231 Difference]: Finished difference. Result has 31 places, 24 transitions, 62 flow [2023-08-27 09:36:42,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=62, PETRI_PLACES=31, PETRI_TRANSITIONS=24} [2023-08-27 09:36:42,178 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -3 predicate places. [2023-08-27 09:36:42,178 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 24 transitions, 62 flow [2023-08-27 09:36:42,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 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 09:36:42,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:36:42,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:36:42,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 09:36:42,179 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-08-27 09:36:42,179 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:36:42,179 INFO L85 PathProgramCache]: Analyzing trace with hash -838295480, now seen corresponding path program 1 times [2023-08-27 09:36:42,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:36:42,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126033758] [2023-08-27 09:36:42,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:36:42,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:36:42,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:36:42,305 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 09:36:42,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:36:42,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126033758] [2023-08-27 09:36:42,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126033758] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:36:42,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:36:42,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 09:36:42,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467633087] [2023-08-27 09:36:42,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:36:42,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 09:36:42,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:36:42,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 09:36:42,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 09:36:42,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 189 [2023-08-27 09:36:42,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 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 09:36:42,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:36:42,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 189 [2023-08-27 09:36:42,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:36:42,372 INFO L124 PetriNetUnfolderBase]: 24/81 cut-off events. [2023-08-27 09:36:42,373 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 09:36:42,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 81 events. 24/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 188 event pairs, 8 based on Foata normal form. 10/89 useless extension candidates. Maximal degree in co-relation 161. Up to 34 conditions per place. [2023-08-27 09:36:42,375 INFO L140 encePairwiseOnDemand]: 183/189 looper letters, 15 selfloop transitions, 6 changer transitions 0/27 dead transitions. [2023-08-27 09:36:42,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 27 transitions, 111 flow [2023-08-27 09:36:42,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 09:36:42,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 09:36:42,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 297 transitions. [2023-08-27 09:36:42,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2023-08-27 09:36:42,376 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 297 transitions. [2023-08-27 09:36:42,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 297 transitions. [2023-08-27 09:36:42,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:36:42,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 297 transitions. [2023-08-27 09:36:42,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 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 09:36:42,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 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 09:36:42,382 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 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 09:36:42,382 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 62 flow. Second operand 3 states and 297 transitions. [2023-08-27 09:36:42,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 27 transitions, 111 flow [2023-08-27 09:36:42,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 27 transitions, 103 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 09:36:42,384 INFO L231 Difference]: Finished difference. Result has 29 places, 24 transitions, 66 flow [2023-08-27 09:36:42,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=29, PETRI_TRANSITIONS=24} [2023-08-27 09:36:42,385 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -5 predicate places. [2023-08-27 09:36:42,385 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 24 transitions, 66 flow [2023-08-27 09:36:42,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 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 09:36:42,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:36:42,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:36:42,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 09:36:42,386 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-08-27 09:36:42,387 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:36:42,387 INFO L85 PathProgramCache]: Analyzing trace with hash -475600271, now seen corresponding path program 1 times [2023-08-27 09:36:42,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:36:42,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669482565] [2023-08-27 09:36:42,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:36:42,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:36:42,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:36:42,524 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 09:36:42,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:36:42,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669482565] [2023-08-27 09:36:42,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669482565] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:36:42,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:36:42,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 09:36:42,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651394089] [2023-08-27 09:36:42,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:36:42,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 09:36:42,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:36:42,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 09:36:42,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 09:36:42,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 189 [2023-08-27 09:36:42,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 66 flow. Second operand has 6 states, 6 states have (on average 86.16666666666667) internal successors, (517), 6 states have internal predecessors, (517), 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 09:36:42,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:36:42,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 189 [2023-08-27 09:36:42,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:36:42,613 INFO L124 PetriNetUnfolderBase]: 31/84 cut-off events. [2023-08-27 09:36:42,613 INFO L125 PetriNetUnfolderBase]: For 7/8 co-relation queries the response was YES. [2023-08-27 09:36:42,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 84 events. 31/84 cut-off events. For 7/8 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 174 event pairs, 10 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 196. Up to 35 conditions per place. [2023-08-27 09:36:42,614 INFO L140 encePairwiseOnDemand]: 183/189 looper letters, 23 selfloop transitions, 5 changer transitions 0/29 dead transitions. [2023-08-27 09:36:42,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 29 transitions, 136 flow [2023-08-27 09:36:42,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 09:36:42,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 09:36:42,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 533 transitions. [2023-08-27 09:36:42,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47001763668430335 [2023-08-27 09:36:42,623 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 533 transitions. [2023-08-27 09:36:42,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 533 transitions. [2023-08-27 09:36:42,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:36:42,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 533 transitions. [2023-08-27 09:36:42,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 88.83333333333333) internal successors, (533), 6 states have internal predecessors, (533), 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 09:36:42,628 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 189.0) internal successors, (1323), 7 states have internal predecessors, (1323), 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 09:36:42,628 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 189.0) internal successors, (1323), 7 states have internal predecessors, (1323), 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 09:36:42,628 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 66 flow. Second operand 6 states and 533 transitions. [2023-08-27 09:36:42,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 29 transitions, 136 flow [2023-08-27 09:36:42,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 29 transitions, 128 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 09:36:42,631 INFO L231 Difference]: Finished difference. Result has 32 places, 23 transitions, 68 flow [2023-08-27 09:36:42,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=68, PETRI_PLACES=32, PETRI_TRANSITIONS=23} [2023-08-27 09:36:42,633 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -2 predicate places. [2023-08-27 09:36:42,633 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 23 transitions, 68 flow [2023-08-27 09:36:42,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 86.16666666666667) internal successors, (517), 6 states have internal predecessors, (517), 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 09:36:42,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:36:42,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:36:42,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 09:36:42,634 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-08-27 09:36:42,635 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:36:42,635 INFO L85 PathProgramCache]: Analyzing trace with hash -475600199, now seen corresponding path program 1 times [2023-08-27 09:36:42,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:36:42,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469097050] [2023-08-27 09:36:42,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:36:42,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:36:42,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:36:42,698 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 09:36:42,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:36:42,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469097050] [2023-08-27 09:36:42,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469097050] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:36:42,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:36:42,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 09:36:42,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752120695] [2023-08-27 09:36:42,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:36:42,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 09:36:42,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:36:42,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 09:36:42,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 09:36:42,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 189 [2023-08-27 09:36:42,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 23 transitions, 68 flow. Second operand has 4 states, 4 states have (on average 92.25) internal successors, (369), 4 states have internal predecessors, (369), 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 09:36:42,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:36:42,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 189 [2023-08-27 09:36:42,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:36:42,774 INFO L124 PetriNetUnfolderBase]: 30/81 cut-off events. [2023-08-27 09:36:42,774 INFO L125 PetriNetUnfolderBase]: For 7/8 co-relation queries the response was YES. [2023-08-27 09:36:42,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 81 events. 30/81 cut-off events. For 7/8 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 168 event pairs, 22 based on Foata normal form. 2/82 useless extension candidates. Maximal degree in co-relation 187. Up to 72 conditions per place. [2023-08-27 09:36:42,775 INFO L140 encePairwiseOnDemand]: 185/189 looper letters, 20 selfloop transitions, 3 changer transitions 0/24 dead transitions. [2023-08-27 09:36:42,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 24 transitions, 116 flow [2023-08-27 09:36:42,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 09:36:42,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 09:36:42,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 380 transitions. [2023-08-27 09:36:42,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026455026455027 [2023-08-27 09:36:42,777 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 380 transitions. [2023-08-27 09:36:42,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 380 transitions. [2023-08-27 09:36:42,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:36:42,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 380 transitions. [2023-08-27 09:36:42,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 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 09:36:42,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 189.0) internal successors, (945), 5 states have internal predecessors, (945), 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 09:36:42,780 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 189.0) internal successors, (945), 5 states have internal predecessors, (945), 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 09:36:42,780 INFO L175 Difference]: Start difference. First operand has 32 places, 23 transitions, 68 flow. Second operand 4 states and 380 transitions. [2023-08-27 09:36:42,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 24 transitions, 116 flow [2023-08-27 09:36:42,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 24 transitions, 106 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-27 09:36:42,781 INFO L231 Difference]: Finished difference. Result has 29 places, 22 transitions, 62 flow [2023-08-27 09:36:42,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=62, PETRI_PLACES=29, PETRI_TRANSITIONS=22} [2023-08-27 09:36:42,782 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -5 predicate places. [2023-08-27 09:36:42,782 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 22 transitions, 62 flow [2023-08-27 09:36:42,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.25) internal successors, (369), 4 states have internal predecessors, (369), 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 09:36:42,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:36:42,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:36:42,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 09:36:42,783 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-08-27 09:36:42,783 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:36:42,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1945872118, now seen corresponding path program 1 times [2023-08-27 09:36:42,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:36:42,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646830976] [2023-08-27 09:36:42,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:36:42,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:36:42,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:36:42,938 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 09:36:42,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:36:42,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646830976] [2023-08-27 09:36:42,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646830976] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:36:42,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:36:42,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 09:36:42,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319650742] [2023-08-27 09:36:42,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:36:42,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 09:36:42,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:36:42,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 09:36:42,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 09:36:42,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 189 [2023-08-27 09:36:42,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 62 flow. Second operand has 7 states, 7 states have (on average 86.71428571428571) internal successors, (607), 7 states have internal predecessors, (607), 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 09:36:42,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:36:42,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 189 [2023-08-27 09:36:42,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:36:43,022 INFO L124 PetriNetUnfolderBase]: 27/75 cut-off events. [2023-08-27 09:36:43,022 INFO L125 PetriNetUnfolderBase]: For 9/10 co-relation queries the response was YES. [2023-08-27 09:36:43,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 75 events. 27/75 cut-off events. For 9/10 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 149 event pairs, 12 based on Foata normal form. 3/77 useless extension candidates. Maximal degree in co-relation 168. Up to 44 conditions per place. [2023-08-27 09:36:43,023 INFO L140 encePairwiseOnDemand]: 182/189 looper letters, 0 selfloop transitions, 0 changer transitions 26/26 dead transitions. [2023-08-27 09:36:43,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 26 transitions, 122 flow [2023-08-27 09:36:43,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 09:36:43,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 09:36:43,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 531 transitions. [2023-08-27 09:36:43,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46825396825396826 [2023-08-27 09:36:43,025 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 531 transitions. [2023-08-27 09:36:43,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 531 transitions. [2023-08-27 09:36:43,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:36:43,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 531 transitions. [2023-08-27 09:36:43,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 88.5) internal successors, (531), 6 states have internal predecessors, (531), 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 09:36:43,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 189.0) internal successors, (1323), 7 states have internal predecessors, (1323), 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 09:36:43,028 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 189.0) internal successors, (1323), 7 states have internal predecessors, (1323), 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 09:36:43,028 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 62 flow. Second operand 6 states and 531 transitions. [2023-08-27 09:36:43,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 26 transitions, 122 flow [2023-08-27 09:36:43,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 26 transitions, 116 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 09:36:43,029 INFO L231 Difference]: Finished difference. Result has 30 places, 0 transitions, 0 flow [2023-08-27 09:36:43,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=30, PETRI_TRANSITIONS=0} [2023-08-27 09:36:43,030 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -4 predicate places. [2023-08-27 09:36:43,030 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 0 transitions, 0 flow [2023-08-27 09:36:43,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 86.71428571428571) internal successors, (607), 7 states have internal predecessors, (607), 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 09:36:43,033 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 11 remaining) [2023-08-27 09:36:43,033 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2023-08-27 09:36:43,033 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2023-08-27 09:36:43,033 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2023-08-27 09:36:43,034 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (6 of 11 remaining) [2023-08-27 09:36:43,034 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 11 remaining) [2023-08-27 09:36:43,034 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 11 remaining) [2023-08-27 09:36:43,034 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2023-08-27 09:36:43,034 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2023-08-27 09:36:43,034 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2023-08-27 09:36:43,035 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2023-08-27 09:36:43,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 09:36:43,035 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:36:43,039 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 09:36:43,039 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 09:36:43,042 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 09:36:43 BasicIcfg [2023-08-27 09:36:43,042 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 09:36:43,043 INFO L158 Benchmark]: Toolchain (without parser) took 6950.13ms. Allocated memory was 327.2MB in the beginning and 440.4MB in the end (delta: 113.2MB). Free memory was 283.4MB in the beginning and 369.1MB in the end (delta: -85.7MB). Peak memory consumption was 28.6MB. Max. memory is 16.0GB. [2023-08-27 09:36:43,043 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 327.2MB. Free memory was 305.4MB in the beginning and 305.2MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 09:36:43,043 INFO L158 Benchmark]: CACSL2BoogieTranslator took 587.79ms. Allocated memory is still 327.2MB. Free memory was 283.4MB in the beginning and 255.1MB in the end (delta: 28.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. [2023-08-27 09:36:43,044 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.42ms. Allocated memory is still 327.2MB. Free memory was 255.1MB in the beginning and 252.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-27 09:36:43,044 INFO L158 Benchmark]: Boogie Preprocessor took 24.35ms. Allocated memory is still 327.2MB. Free memory was 252.0MB in the beginning and 250.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 09:36:43,044 INFO L158 Benchmark]: RCFGBuilder took 510.94ms. Allocated memory is still 327.2MB. Free memory was 250.9MB in the beginning and 234.2MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-27 09:36:43,045 INFO L158 Benchmark]: TraceAbstraction took 5770.29ms. Allocated memory was 327.2MB in the beginning and 440.4MB in the end (delta: 113.2MB). Free memory was 234.2MB in the beginning and 369.1MB in the end (delta: -134.9MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 09:36:43,046 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 327.2MB. Free memory was 305.4MB in the beginning and 305.2MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 587.79ms. Allocated memory is still 327.2MB. Free memory was 283.4MB in the beginning and 255.1MB in the end (delta: 28.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 49.42ms. Allocated memory is still 327.2MB. Free memory was 255.1MB in the beginning and 252.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 24.35ms. Allocated memory is still 327.2MB. Free memory was 252.0MB in the beginning and 250.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 510.94ms. Allocated memory is still 327.2MB. Free memory was 250.9MB in the beginning and 234.2MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 5770.29ms. Allocated memory was 327.2MB in the beginning and 440.4MB in the end (delta: 113.2MB). Free memory was 234.2MB in the beginning and 369.1MB in the end (delta: -134.9MB). There was no memory consumed. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 133]: Unsoundness Warning unspecified type, defaulting to int C: unsigned short [133] - GenericResultAtLocation [Line: 495]: Unsoundness Warning unspecified type, defaulting to int C: short [495] - GenericResultAtLocation [Line: 495]: Unsoundness Warning unspecified type, defaulting to int C: short [495] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.9s, 104 PlacesBefore, 34 PlacesAfterwards, 101 TransitionsBefore, 31 TransitionsAfterwards, 1292 CoEnabledTransitionPairs, 7 FixpointIterations, 47 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 0 ChoiceCompositions, 74 TotalNumberOfCompositions, 3359 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1759, independent: 1621, independent conditional: 0, independent unconditional: 1621, dependent: 138, dependent conditional: 0, dependent unconditional: 138, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 682, independent: 646, independent conditional: 0, independent unconditional: 646, dependent: 36, dependent conditional: 0, dependent unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1759, independent: 975, independent conditional: 0, independent unconditional: 975, dependent: 102, dependent conditional: 0, dependent unconditional: 102, unknown: 682, unknown conditional: 0, unknown unconditional: 682] , Statistics on independence cache: Total cache size (in pairs): 114, Positive cache size: 101, Positive conditional cache size: 0, Positive unconditional cache size: 101, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 938]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 938]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 948]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 948]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 148 locations, 11 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: 5.6s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 58 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 58 mSDsluCounter, 14 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 380 IncrementalHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 8 mSDtfsCounter, 380 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=0, InterpolantAutomatonStates: 28, 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, 76 NumberOfCodeBlocks, 76 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 69 ConstructedInterpolants, 0 QuantifiedInterpolants, 173 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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 5 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-27 09:36:43,066 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...